18102818 Yokogawaflip

User’s EJX and EJA-E Series
Manual Differential Pressure and
Pressure Transmitters
Installation Manual

IM 01C25A01-01E

Contents

1. Introduction

1.1 For Safe Use of Product..............................................2
1.2 Warranty......................................................................4
1.3 ATEX Documentation..................................................5

2. Handling Cautions

2.1 Model and Specifications Check.................................7
2.2 Selecting the Installation Location ..............................7
2.3 Pressure Connection ..................................................7
2.4 Installation of an Explosion-Protected Instrument ......7
2.5 EMC Conformity Standards ..................................... 27
2.6 Pressure Equipment Directive (PED) ...................... 28
2.7 Safety Requirement Standards................................ 29

3. Installation

3.1 Mounting................................................................... 30
3.2 Mounting the Diaphragm Seals ......................................30
3.3 Diaphragm Seals Installation Consideration............ 31
3.4 Mounting the Flushing Connection Ring.................. 32
3.5 Affixing the Teflon Film ............................................. 33
3.6 Rotating Transmitter Section.................................... 34
3.7 Changing the Direction of Integral Indicator............. 34

4. Installing Impulse Piping

4.1 Impulse Piping Installation Precautions ................... 35
4.2 Impulse Piping Connection Examples ..................... 37
4.3 Process Piping Installation Precautions (EJ115)38

5. Wiring

5.1 Wiring Precautions................................................... 40
5.2 Connections of External Wiring to Terminal Box...... 40
5.3 Wiring ....................................................................... 43
5.4 RTD Cable Connection (EJX910A/EJX930A)......... 45
5.5 Grounding ................................................................ 47
5.6 Power Supply Voltage and Load Resistance........... 47

6. Operation

6.1 Preparation for Starting Operation........................... 48
6.2 Zero Point Adjustment.............................................. 48
6.3 Local Parameter Setting .......................................... 49

7. Errors and Countermeasures

IM 01C25A01-01E

12th Edition



<1. Introduction> 1

1. Introduction [EJX series Communication Manual]

This installation manual provides the basic guidelines Models Document No. Style
for installation and wiring procedures of the DPharp EJX —
series and EJA-E series transmitters with BRAIN and DPharp HART 5/HART 7 IM 01C25T01-06EN —
HART protocols and is composed of the information Communication Type —
extracted from the product users’ manuals as listed in —
Table 1.1. It does not provide the information including DPharp FOUNDATION Fieldbus IM 01C25T02-01E —
wiring procedures of the transmitters with FOUNDATION Communication Type —
Fieldbus, Profibus and Modbus protocols, product —
specific functional specifications and explanations, DPharp BRAIN Communication IM 01C25T03-01E
operation, maintenance and trouble-shooting. Type

For EJXC40A Digital Remote Sensor, as this Installation DPharp PROFIBUS PA IM 01C25T04-01EN
Manual does not cover the product, please refer to the Communication Type
dedicated manual for EJXC40A.
EJX910A and EJX930A HART IM 01C25R02-01E
WARNING Communication Type

To ensure correct and safe use of the instrument, EJX910A and EJX930A IM 01C25R03-01E
obtain the manuals applicable to designated models Fieldbus Communication Type
and specifications as listed Table 1.1, read them
thoroughly and fully understand how to operate the EJX910A and EJX930A Modbus IM 01C25R05-01E
instrument before operating it. Communication Type

Users’ manual for each product consists of a hardware [EJA-E series Hardware Manual]
manual describing installation, wiring, operation,
maintenance and specification including detailed model Models Document No. Style
and suffix code information, and a communication EJA110E, EJA120E
manual describing information specific to each EJA130E, EJA310E, EJA430E IM 01C25B01-01E S1
communication protocol type, including safety manual for and EJA440E
safety instrumented system. EJA210E IM 01C25C01-01E S1
EJA510E and EJA530E IM 01C25F01-01E S1
These manuals can be downloaded from the website EJA118E and EJA438E IM 01C25H01-01E S1
of Yokogawa or purchased from the Yokogawa EJA115E IM 01C25K01-01E S1
representatives. EJAC80E and EJAC50E IM 01C25W01-01EN —

Website address: http://www.yokogawa.com/fld/ [EJA-E series Communication Manual]

Models Document No. Style
—
DPharp HART 5/HART 7 IM 01C25T01-06EN —
Communication Type —
—
DPharp FOUNDATION Fieldbus IM 01C25T02-01E
Communication Type

DPharp BRAIN Communication IM 01C25T03-01E
Type

DPharp PROFIBUS PA IM 01C25T04-01EN
Communication Type

Table 1.1 PDF Manual List and Applicable Style Code Note: An exclusive User’s Manual might be attached for the
products whose suffix codes or optional codes contain
[EJX series Hardware Manual] code “Z”. Please read it along with the standard manuals.

Models Document No. Style
S3
EJX110A S1

EJX120A IM 01C25B01-01E S2

EJX130A, EJX310A, EJX430A S2
S2
and EJX440A S1
S2
EJX210A IM 01C25C01-01E S1
S2
EJX510A and EJX530A IM 01C25F01-01E S1
EJX610A and EJX630A —
—
EJX118A and EJX438A IM 01C25H01-01E

EJX115A IM 01C25K01-01E

EJX910A IM 01C25R01-01E
EJX930A

EJXC80A and EJXC50A IM 01C25W01-01EN

EJXC40A IM 01C25W05-01EN

12th Edition: Feb. 2017 (YK) IM 01C25A01-01E
All Rights Reserved, Copyright © 2009, Yokogawa Electric Corporation

<1. Introduction> 2

 Regarding This Manual IMPORTANT

• This manual should be passed on to the end user. Indicates that operating the hardware or software in
• The contents of this manual are subject to change this manner may damage it or lead to system failure.

without prior notice. NOTE
• All rights reserved. No part of this manual may be
Draws attention to information essential for
reproduced in any form without Yokogawa’s written understanding the operation and features.
permission.
• Yokogawa makes no warranty of any kind with regard Direct current
to this manual, including, but not limited to, implied
warranty of merchantability and fitness for a particular Functional grounding terminal
purpose.
• If any question arises or errors are found, or if any Caution
information is missing from this manual, please inform This symbol indicates that the operator must
the nearest Yokogawa sales office. refer to an expl ana tion i n the user ’s manu al
• The specifications covered by this manual are limited in order to avoid the risk of injury or death of
to those for the standard type under the specified personnel or damage to the instrument.
model number break-down and do not cover custom-
made instruments. 1.1 For Safe Use of Product
• Please note that changes in the specifications,
construction, or component parts of the instrument For the protection and safety of the operator and the
may not immediately be reflected in this manual at instrument or the system including the instrument, please
the time of change, provided that postponement of be sure to follow the instructions on safety described
revisions will not cause difficulty to the user from a in this manual when handling this instrument. In case
functional or performance standpoint. the instrument is handled in contradiction to these
• Yokogawa assumes no responsibilities for this instructions, Yokogawa does not guarantee safety.
product except as stated in the warranty. Please give your attention to the followings.
• If the customer or any third party is harmed by the use
of this product, Yokogawa assumes no responsibility (a) Installation
for any such harm owing to any defects in the product
which were not predictable, or for any indirect WARNING
damages.
• When describing the model name like EJ110 • The instrument must be installed by an expert
in this manual, it shows the applicability for both engineer or a skilled personnel. The procedures
EJX110A and EJA110E. The same representations described about INSTALLATION are not permitted
are used for the other models, too. for operators.
• The following safety symbol marks are used in this
manual: • In case of high process temperature, care should
be taken not to burn yourself because the surface
WARNING of body and case reaches a high temperature.

Indicates a potentially hazardous situation which, if not • The instrument installed in the process is under
avoided, could result in death or serious injury. pressure. Never loosen the process connector
bolts to avoid the dangerous spouting of process
CAUTION fluid.

Indicates a potentially hazardous situation which, if not • During draining condensate from the pressure
avoided, may result in minor or moderate injury. It may detector section, take appropriate care to avoid
also be used to alert against unsafe practices. contact with the skin, eyes or body, or inhalation
of vapors, if the accumulated process fluid may be
toxic or otherwise harmful.

• When removing the instrument from hazardous
processes, avoid contact with the fluid and the
interior of the meter.

• All installation shall comply with local installation
requirement and local electrical code.

IM 01C25A01-01E

<1. Introduction> 3
(e) Explosion Protected Type Instrument
(b) Wiring
WARNING
WARNING
• Users of explosion proof instruments should refer
• The instrument must be installed by an expert first to section 2.4 (Installation of an Explosion
engineer or a skilled personnel. The procedures Protected Instrument) of this manual.
described about WIRING are not permitted for
operators. • For TIIS flameproof type instruments, be sure
to read “INSTALLATION AND OPERATING
• Please confirm that voltages between the power PRECAUTIONS FOR TIIS FLAMEPROOF
supply and the instrument before connecting the EQUIPMENT” at the end of this manual.
power cables and that the cables are not powered
before connecting. • The use of this instrument is restricted to those
who have received appropriate training in the
(c) Operation device.

WARNING • Take care not to create sparks when accessing the
instrument or peripheral devices in a hazardous
• Wait 5 min. after power is turned off, before location.
opening the covers.
(f) Modification
• Do not open the cover in wet weather or humid
environment. If the cover is opened, stated WARNING
enclosure protection is not applicable.
• Yokogawa will not be liable for malfunctions or
(d) Maintenance damage resulting from any modification made to
this instrument by the customer.
WARNING
(g) Product Disposal
• Please do not carry out except being written
to maintenance descriptions. When these The instrument should be disposed of in accordance with
procedures are needed, please contact nearest local and national legislation/regulations.
YOKOGAWA office.
(h) Authorized Representative in EEA
• Care should be taken to prevent the build up of
drift, dust or other material on the display glass In relation to the CE Marking, The authorized
and name plate. In case of its maintenance, soft representative for this product in the EEA (European
and dry cloth is used. Economic Area) is:
Yokogawa Europe B.V.
Euroweg 2, 3825 HD Amersfoort,The Netherlands

IM 01C25A01-01E

<1. Introduction> 4

(i) Control of Pollution Caused by the Product

This is an explanation for the product based on “Control of Pollution caused by Electronic Information
Products” in the People’s Republic of China. The information is valid only in China.

产品中有害物质或元素的名称及含量

型号 部件名称 铅 汞 有害物质
（Pb） （Hg） 镉 六价铬 多溴联苯 多溴二苯醚
EJX/EJA-E/ 壳体 （Cd） （Cr(VI)） （PBB） （PBDE）
EJA/EJA-A Series 膜盒组件 × ○ ○○ ○ ○
基板组件 × ○ ○○ ○ ○
差压/压力变送器 电源连接线 × ○ ○× ○ ○
× ○ ○○ ○ ○
FVX110 壳体 × ○ ○○ ○ ○
现场总线网段指示器 基板组件 × ○ ○× ○ ○
电源连接线 × ○ ○○ ○ ○

○：表示该部件的所有均质材料中的有害物质的含量均在 GB/T26572 标准中所规定的限量以下。

×：表示至少该部件的某些均质材料中的有害物质的含量均在 GB/T26572 标准中所规定的限量以上。

环保使用期限：
该标识适用于 SJ /T11364 中所述，在中华人民共和国销售的电子电气产品的环保使用期限。
注）该年数为“环保使用期限”，并非产品的质量保证期。

1.2 Warranty - Failure or damage due to improper handling, use
or storage which is out of design conditions.
• The warranty shall cover the period noted on the
quotation presented to the purchaser at the time of - Use of the product in question in a location
purchase. Problems occurred during the warranty not conforming to the standards specified by
period shall basically be repaired free of charge. Yokogawa, or due to improper maintenance of the
installation location.
• In case of problems, the customer should contact the
Yokogawa representative from which the instrument - Failure or damage due to modification or repair
was purchased, or the nearest Yokogawa office. by any party except Yokogawa or an approved
representative of Yokogawa.
• If a problem arises with this instrument, please inform
us of the nature of the problem and the circumstances - Malfunction or damage from improper relocation of
under which it developed, including the model the product in question after delivery.
specification and serial number. Any diagrams,
data and other information you can include in your - Reason of force majeure such as fires,
communication will also be helpful. earthquakes, storms/floods, thunder/lightening,
or other natural disasters, or disturbances, riots,
• Responsible party for repair cost for the problems warfare, or radioactive contamination.
shall be determined by Yokogawa based on our
investigation.  Trademarks:

• The Purchaser shall bear the responsibility for • ‘DPharp’, ‘EJX’, ‘EJA’, ‘FieldMate’ and ‘BRAIN
repair costs, even during the warranty period, if the TERMINAL’ are registered trademarks of Yokogawa
malfunction is due to: Electric Corporation. Company names and product
names used in this material are registered trademarks
- Improper and/or inadequate maintenance by the or trademarks of their respective owners.
purchaser.
• In this manual, trademarks or registered trademarks
are not marked with ™ or ®.

IM 01C25A01-01E

<1. Introduction> 5

1.3 ATEX Documentation SK

This is only applicable to the countries in European Union.
GB

CZ
DK

I LT

E LV

EST
NL

PL
SF

SLO
P

H
F

BG

D
RO

S
M

GR

IM 01C25A01-01E

<2. Handling Cautions> 6

2. Handling Cautions

When the transmitter is delivered, visually check them EJ110 B
to make sure that no damage occurred during shipment.
Also check that all transmitter mounting hardware shown EJ120 1 D
in Figure 2.1 is included. If the transmitter was ordered
without the mounting bracket or without the process EJ130 -  2  -  GJ
connector, the transmitter mounting hardware is not EJ310 3
included.
EJ430 4 K

EJ440 M

B 1
2
Table 2.1 Applicable Model Code for Mounting 1D 3
Hardware 4
EJX910A -  2  -  GJ B
EJX930A 3 C
Applicable D
model Suffix code Part name Qty 4K

M

EJ110 Process connector bolt 4 1
EJ120
EJ130 Process Process connector 2 EJ210  2  
connections 3
Process connector - -
gasket
EJX910A 1,2,3 and 4 2 4

EJX930A EJ510

EJ210 Process Process connector bolt 2 EJ530 -  -  F
EJ310 connections Process connector 1 EJX610A L
EJ430 1,2,3 and 4 Process connector 1
EJ440 gasket 1 EJX630A
Mounting bracket
EJ110 B,D,G,J,K and U-bolt 2 EJ118 -  -  B
EJ120 M* EJ438 J
EJ130 U-bolt nut 1
EJ310 B
EJ430 Mounting bracket 4
EJ440 (L or flat type) EJ115 -  -  D
EJ118 J
EJ438 Transmitter mounting
EJ115 bolt K

EJX910A F0201.ai

EJX930A Cable gland and RTD cable
(EJX910A and EJX930A only)
EJ110 Mounting U-bolt 1
bracket M (For U-bolt nut 2 Bolt
EJ510 measurement Mounting bracket 1
EJ530 span code other Transmitter mounting Process connector
EJX610A than F) bolt 2 Process connector
EJX630A U-bolt (L and S) Gasket
Mounting bracket U-bolt nut (L and S) 1 ea.
F and L 2 ea. U-bolt
Mounting bracket
1

External Mounting bracket
(Flat type)
temperature input RTD cable 1 Mounting bracket
2 (L type)
EJX910A B, C and D Transmitter mounting bolt
EJX930A
External Teflon film

temperature input Cable gland U-bolt nut Fluorinated oil
1, 2, 3 and 4 U-bolt nut (L) Mounting bracket

EJ210 Option code /TF1 Teflon film 1
EJ438 Fluorinated oil 1

EJ118 Option code /TF1 Teflon film 2
Fluorinated oil 2

*: For measurement span code F.

U-bolt nut (S)
U-bolt (S)

U-bolt (L)

F0202.ai

Figure 2.1 Transmitter Mounting Hardware

IM 01C25A01-01E

<2. Handling Cautions> 7

2.1 Model and Specifications 2.3 Pressure Connection
Check
WARNING
The model name and specifications are indicated on the
name plate attached to the case. • Never loosen the process connector bolts when an
instrument is installed in a process. The device is
under pressure, and a loss of seal can result in a
sudden and uncontrolled release of process fluid.

• When draining toxic process fluids that have
condensed inside the pressure detector, take
appropriate steps to prevent the contact of such
fluids with the skin or eyes and the inhalation of
vapors from these fluids.

F0203.ai The following precautions must be observed in order to
safely operate the transmitter under pressure.
Figure 2.2 Name Plate
(a) Make sure that the process connector bolts are
2.2 Selecting the Installation tightened firmly.
Location
(b) Make sure that there are no leaks in the impulse
The transmitter is designed to withstand severe piping.
environmental conditions. However, to ensure that it will
provide years of stable and accurate performance, take (c) Never apply a pressure higher than the specified
the following precautions when selecting the installation maximum working pressure.
location.
2.4 Installation of an Explosion-
(a) Ambient Temperature Protected Instrument
Avoid locations subject to wide temperature variations
or a significant temperature gradient. If the location is If a customer makes a repair or modification to an
exposed to radiant heat from plant equipment, provide intrinsically safe or explosionproof instrument and the
adequate thermal insulation and/or ventilation. instrument is not restored to its original condition, its
intrinsically safe or explosionproof construction may be
(b) Ambient Atmosphere compromised and the instrument may be hazardous to
Do not install the transmitter in a corrosive operate. Please contact Yokogawa before making any
repair or modification to an instrument.
atmosphere. If this cannot be avoided, there must be
adequate ventilation as well as measures to prevent CAUTION
the leaking of rain water and the presence of standing
water in the conduits. This instrument has been tested and certified as
being intrinsically safe or explosionproof. Please
(c) Shock and Vibration note that severe restrictions apply to this instrument’s
Although the transmitter is designed to be relatively construction, installation, external wiring, maintenance
and repair. A failure to abide by these restrictions could
resistant to shock and vibration, an installation site make the instrument a hazard to operate.
should be selected where this is kept to a minimum.
WARNING
(d) Installation of Explosion-protected Transmitters
An explosion-protected transmitters is certified for Maintaining the safety of explosionproof equipment
requires great care during mounting, wiring, and
installation in a hazardous area containing specific piping. Safety requirements also place restrictions on
gas types. See subsection 2.4 “Installation of an maintenance and repair. Please read the following
Explosion-Protected Instrument.” sections very carefully.

IM 01C25A01-01E

<2. Handling Cautions> 8

WARNING

The range setting switch must not be used in a
hazardous area.

IMPORTANT

For combined approval types
Once a device of multiple approval type is installed,
it should not be re-installed using any other approval
types. Apply a permanent mark in the check box of
the selected approval type on the certification label on
the transmitter to distinguish it from unused approval
types.

2.4.1 FM Approval

a. FM Intrinsically Safe/Nonincendive for
HART/BRAIN Protocol Type (Except for
EJX90A)

Note 1. EJX/EJA-E Series pressure transmitters with
optional code /FS1 are applicable for use in
hazardous locations.

• Applicable Standard:
Class 3600:2011, Class 3610:2010,
Class 3611:2004, Class 3810:2005
ANSI/ISA-60079-0:2009, ANSI/ISA-60079-11:2009
NEMA 250:1991

• Rating
Intrinsically Safe for
Class I, II, III Division 1,
Groups A, B, C, D, E, F, G T4
Class I Zone 0 AEx ia IIC T4

Nonincendive for
Class I, II, III Division 2
Groups A, B, C, D, F, G T4

Class I, Zone 2 Group IIC T4
• Ambient temperature: –60 to 60°C
• Enclosure: Type 4X

Note 2. Installation
Installation should be in accordance with Control
Drawing IFM022-A12.

Note 3. Maintenance and Repair
• The instrument modification or parts replacement
by other than authorized representative of
Yokogawa Electric Corporation is prohibited and
will void Factory Mutual Intrinsically safe and
Nonincendive Approval.

IM 01C25A01-01E

<2. Handling Cautions> 9

b. FM Intrinsically Safe/Nonincendive for
Fieldbus Type (Except for EJX90A)

EJX/EJA-E Series pressure transmitters with optional
code /FS15 are applicable for use in hazardous
locations.

Note 1.
• Applicable Standard:
Class 3600:2011, Class 3610:2010,
Class 3611:2004, Class 3810:2005
ANSI/ISA-60079-0:2009, ANSI/ISA-60079-11:2009
NEMA 250:1991
• Rating
Intrinsically Safe with Entity/FISCO for
Class I, II, III Division 1,
Groups A, B, C, D, E, F, G T4
Class I Zone 0 AEx ia IIC T4
Nonincendive field wiring/FNICO for
Class I, II Division 2
Groups A, B, C, D, F, G T4
Class III Division 1 T4
Class I, Zone 2 Group IIC T4
• Ambient temperature: –40 to 60°C
• Enclosure: Type 4X
• Electrical Connection:
1/2 NPT female, M20 female

Note 2. Installation
Installation should be in accordance with Control
Drawing IFM024-A12.

IM 01C25A01-01E

<2. Handling Cautions> 10

c. FM Intrinsically Safe/Nonincendive for
Fieldbus Type for EJX90A

EJX multivariable transmitter with optional code
/FS15 are applicable for use in hazardous locations.

Note 1.
• Applicable Standard:
Class 3600:2011, Class 3610:2010,
Class 3611:2004, Class 3810:2005
ANSI/ISA-60079-0:2009, ANSI/ISA-60079-11:2009,
ANSI/ISA-60079-27:2006
NEMA 250:1991
• Rating
Intrinsically Safe with Entity/FISCO for Class I, II, III
Division 1 Groups A, B, C, D, E, F, G T4
Class I Zone 0 AEx ia IIC T4
Nonincendive field wiring/FNICO for Class I, II
Division 2 Groups A, B, C, D, F, G T4
Class III Division 1 T4
Class I, Zone 2 Group IIC T4
• Ambient temperature: –40 to 60°C
• Enclosure: Type 4X
• Electrical Connection: 1/2 NPT female, M20
female

Note 2. Installation
Installation should be in accordance with Control
Drawing IFM026-A12.

IM 01C25A01-01E

<2. Handling Cautions> 11

IM 01C25A01-01E

<2. Handling Cautions> 12

d. FM Explosionproof

Caution for FM explosionproof type.

Note 1. EJX/EJA-E Series pressure transmitters with
optional code /FF1 or /V1F are applicable for
use in hazardous locations.

• Applicable Standard: FM3600, FM3615, FM3810,
ANSI/NEMA 250

• Explosionproof for Class I, Division 1, Groups B, C
and D.

• Dust-ignitionproof for Class II/III, Division 1,
Groups E, F and G.

• Enclosure: Type 4X
• Temperature Class: T6
• Ambient Temperature: –40 to 60°C
• Supply Voltage: 42 V dc max.

32 V dc max. (FOUNDATION Fieldbus and
PROFIBUS PA type)
9 to 28 V dc, 27 mW (Low Power type)
9 to 30 V dc, 250 mW (RS485 Modbus
Communication Type)
• Output signal: 4 to 20 mA
15 mA (FOUNDATION Fieldbus and PROFIBUS PA
type)
1 to 5 V (Low Power type)
RS485 Modbus (RS485 Modbus Communication
Type)

Note 2. Wiring
• All wiring shall comply with National Electrical
Code ANSI/NFPA70 and Local Electrical Codes.
• When installed in Division 1, “FACTORY SEALED,
CONDUIT SEAL NOT REQUIRED.”
• Wiring connection for output signal code Q (Low
Power type) shall follow the diagram below.

Pressure Transmitters

SUPPLY + Voltmeter Power Supply
A + +

––

SUPPLY –

Three-Wire Connection

Pressure Transmitters

SUPPLY + Voltmeter Power Supply
A + +

– –
SUPPLY –

Four-Wire Connection

F0218.ai

IM 01C25A01-01E

<2. Handling Cautions> 13

Note 3. Operation • Intrinsically Safe for Class I, Division 1, Groups
• Keep the “WARNING” nameplate attached to the A, B, C & D, Class II, Division 1, Groups E, F & G,
transmitter. Class III, Division 1
WARNING: OPEN CIRCUIT BEFORE
REMOVING COVER. FACTORY SEALED, • Nonincendive for Class I, Division 2, Groups A, B,
CONDUIT SEAL NOT REQUIRED. INSTALL IN C & D, Class II, Division 2, Groups F & G, Class III,
ACCORDANCE WITH THE USERS MANUAL IM Division 1
01C25.
• Take care not to generate mechanical sparking • Enclosure: Type 4X
when accessing to the instrument and peripheral • Temp. Code: T4
devices in a hazardous location. • Amb. Temp.: –50* to 60°C
* –15°C when /HE is specified.
Note 4. Maintenance and Repair • Process Temperature: 120°C max.
• The instrument modification or parts replacement [For CSA E60079]
by other than authorized representative of • Applicable Standard: CAN/CSA E60079-11,
Yokogawa Electric Corporation is prohibited and
will void Factory Mutual Explosionproof Approval. CAN/CSA E60079-15, IEC 60529:2001
• Ex ia IIC T4, Ex nL IIC T4
e. FM Intrinsically Safe and Explosion Proof • Ambient Temperature: –50 to 60°C
Combination for HART/BRAIN Protocol • Max. Process Temp.: 120°C
Type • Enclosure: IP66/IP67

EJX/EJA-E Series pressure transmitters with Note 2. Entity Parameters
optional code /FU1 or /V1U1 can be selected the • Intrinsically safe ratings are as follows:
type of protection (FM Intrinsically Safe or FM Maximum Input Voltage (Vmax/Ui) = 30 V
Explosionproof) for use in hazardous locations. Maximum Input Current (Imax/Ii) = 200 mA
Maximum Input Power (Pmax/Pi) = 0.9 W
Note 1. For the installation of this transmitter, once a Maximum Internal Capacitance (Ci) = 10 nF
particular type of protection is selected, any Maximum Internal Inductance (Li) = 0 µH
other type of protection cannot be used. The • Type "n" or Nonincendive ratings are as follows:
installation must be in accordance with the Maximum Input Voltage (Vmax/Ui) = 30 V
description about the type of protection in this Maximum Internal Capacitance (Ci) = 10 nF
instruction manual. Maximum Internal Inductance (Li) = 0 µH
• Installation Requirements
Note 2. In order to avoid confusion, unnecessary Uo ≤ Ui, Io ≤ Ii, Po ≤ Pi,
marking is crossed out on the label other Co ≥ Ci + Ccable, Lo ≥ Li + Lcable
than the selected type of protection when the Voc ≤ Vmax, Isc ≤ Imax,
transmitter is installed. Ca ≥ Ci + Ccable, La ≥ Li + Lcable
Uo, Io, Po, Co, Lo, Voc, Isc, Ca and La are
2.4.2 CSA Certification parameters of barrier.

a. CSA Intrinsically Safe for HART/BRAIN Note 3. Installation
Protocol Type (Except for EJX90A) • In any safety barreir used output current must
be limited by a resistor 'R' such that Io=Uo/R or
Caution for CSA Intrinsically safe and nonincendive Isc=Voc/R.
type. (Following contents refer to “DOC No. ICS013- • The safety barrier must be CSA certified.
A13”) • Input voltage of the safety barrier must be less
than 250 Vrms/Vdc.
Note 1. EJX/EJA-E Series pressure transmitters with • Installation should be in accordance with Canadian
optional code /CS1 are applicable for use in Electrical Code Part I and Local Electrical Code.
hazardous locations. • Dust-tight conduit seal must be used when
installed in Class II and III environments.
Certificate: 1606623 • The instrument modification or parts replacement
[For CSA C22.2] by other than authorized representative of
• Applicable Standard: C22.2 No.0, C22.2 No.0.4, Yokogawa Electric Corporation and Yokogawa
Corporation of America is prohibited and will
C22.2 No.25, C22.2 No.94, C22.2 No.157, void Canadian Standards Intrinsically safe and
C22.2 No.213, C22.2 No.60079-0, nonincendive Certification.
C22.2 No.61010-1 , C22.2 No.61010-2-030

IM 01C25A01-01E

<2. Handling Cautions> 14

[Intrinsically Safe]  Caution for CSA Intrinsically Safe Type.
(Following Contents Refer to “DOC. No.
Hazardous Location Nonhazardous Location ICS018)

Group IIC, Zone 0 Safety Barrier General Installation Diagram for Intrinsically Safe
Class I, II, III, Division 1, ++ Purpose (Division 1 Installation)
Groups A, B, C, D, E, F, G Equipment
Terminator
Pressure Transmitters +
+

Supply – –– –

+ Pressure
– Transmitter

F0206.ai

[Nonincendive] + Field Instruments
–

Hazardous Location Nonhazardous Location

Group IIC, Zone 2

Class I, II, Division 2, CSA Certified + Field Instruments
Groups A, B, C, D, F, G Equipment –
Class III, Division 1. ([nL] or
nonincendive) Hazardous Location
Pressure Transmitters Non-Hazardous Location

++ Terminator

Supply – –

Not Use F0207.ai +–
Safety Barrier Safety Barrier

+– F0229.ai

b. CSA Intrinsically Safe for Fieldbus Type Note 1. The safety barrier must be CSA certified.
(Except for EJX90A)
Note 2. Input voltage of the safety barrier must be less
EJX/EJA-E Series pressure transmitters with optional than 250Vrms/Vdc.
code /CS15 are applicable for use in hazardous
locations. Note 3. Installation should be in accordance with
• Certificate: 1689689 Canadian Electrical Code Part I and local
• Applicable standard: C22.2 No.0, C22.2 No.0.4, Electrical Code.

C22.2 No.25, C22.2 No.94, C22.2 No.157, Note 4. Do not alter drawing without authorization from
C22.2 No.213, C22.2 No.61010-1, CSA.
C22.2 No.61010-2-030, C22.2 No.60079-0,
CAN/CSA E60079-0, CAN/CSA E60079-11, Electrical Data:
CAN/CSA E60079-15, IEC 60529
• CSA Intrinsically Safe Approval • Rating 1 (Entity)
Class I, Division 1, Groups A, B, C, & D; Class II, For Groups A, B, C, D, E, F, and G or Group IIC
Division 1, Groups E, F & G; Class III; Ex ia IIC T4 Ui (vmax) = 24 V dc
Ambient Temperature: –40* to 60°C (–40* to Ii (Imax) = 250 mA
140°F) Encl. Type 4X, IP66/IP67 Pi (Pmax) = 1.2 W
* –15°C when /HE is specified. Ci = 3.52 nF
• CSA Nonincendive Approval Li = 0 μH
Class I, Division 2, Groups A, B, C, & D; Class II, or
Division 2, Groups F & G; Class III; Ex nL IIC T4 • Rating 2 (FISCO)
Ambient Temperature: –40* to 60°C (–40* to For Groups A, B, C, D, E, F, and G or Group IIC
140°F) Encl. Type 4X, IP66/ IP67 Ui (vmax) = 17.5 V dc
* –15°C when /HE is specified. Ii (Imax) = 380 mA
Pi (Pmax) = 5.32 W
Ci = 3.52 nF

Li = 0 μH
or

IM 01C25A01-01E

<2. Handling Cautions> 15

• Rating 3 (FISCO) c. CSA Explosionproof Type
For Groups C, D, E, F, and G or Group IIB
Ui (vmax) = 17.5 V dc Caution for CSA explosionproof type.
Ii (Imax) = 460 mA
Pi (Pmax) = 5.32 W Note 1. EJX/EJA-E Series pressure transmitters with
Ci = 3.52 nF optional code /CF1 or /V1F are applicable for
Li = 0 μH use in hazardous locations.
Installation requirements;
Po ≤ Pi Uo ≤ Ui Io ≤ Ii, • Certificate: 2014354
Co ≥ Ci + Ccable Lo ≥ Li + Lcable • Applicable Standard: C22.2 No.0,
Vmax ≥ Voc Imax ≥ Isc
Ca ≥ Ci + Ccable La ≥ Li + Lcable C22.2 No.0.4, C22.2 No.0.5, C22.2 No.25,
Uo, Io, Po, Co, Lo,Voc, Isc, Ca and La are parameters C22.2 No.30, C22.2 No.94, C22.2 No.61010-1,
C22.2 No.61010-2-030, C22.2 No.60079-0,
of barrier. C22.2 No.60079-1
• Explosion-proof for Class I, Groups B, C and D.
 Caution for CSA Non-incendive Type. • Dustignition-proof for Class II/III, Groups E, F and
(Following contents refer to “DOC. No. G.
ICS018) • Enclosure: Type 4X
• Temperature Code: T6...T4
Installation Diagram for Non-incendive or Type of • Ex d IIC T6...T4
protection “n” (Division 2 Installation) • Enclosure: IP66/IP67
• Maximum Process Temperature: 120°C (T4),
Terminator 100°C (T5), 85°C (T6)
• Ambient Temperature: –50* to 75°C (T4),
+ SUPPLY –50* to 80°C (T5), –50* to 75°C (T6)
– Pressure * –15°C when /HE is specified.
• Supply Voltage: 42 V dc max.
Transmitter 32 V dc max. (FOUNDATION Fieldbus and
PROFIBUS PA type)
+ Transmitter 9 to 28 V dc, 27 mW (Low Power type)
– 9 to 30 V dc, 250 mW (RS485 Modbus
Communication Type)
+ Transmitter • Output Signal: 4 to 20 mA dc
– 15 mA (FOUNDATION Fieldbus and PROFIBUS PA
type)
Hazardous location 1 to 5 V (Low Power type)
Non-Hazardous location RS485 Modbus (RS485 Modbus Communication
Type)
Terminator
Note 2. Wiring
+– • All wiring shall comply with Canadian Electrical
Code Part I and Local Electrical Codes.
CSA Certified • In hazardous location, wiring shall be in conduit as
Equipment [nL] shown in the figure.
• WARNING:
+– A SEAL SHALL BE INSTALLED WITHIN 50cm OF
THE ENCLOSURE.
F0230.ai UN SCELLEMENT DOIT ÊTRE INSTALLÉ À
MOINS DE 50cm DU BOÎTIER.
Note 1. Installation should be in accordance with • WARNING:
Canadian Electrical Code Part I and local WHEN INSTALLED IN CL.I, DIV 2, SEAL NOT
Electrical Code. REQUIRED.
UNE FOIS INSTALLÉ DANS CL I, DIV 2, AUCUN
Note 2. Dust-tight conduit seal must be used when JOINT N'EST REQUIS.
installed in class II and III environments.

Note 3. Do not alter drawing without authorization from
CSA.

Electrical Data:

• Rating (including FNICO)
Ui or Vmax = 32 V
Ci = 3.52 nF
Li = 0 μH

IM 01C25A01-01E

<2. Handling Cautions> 16

Non-Hazardous Hazardous Locations Division 1 Note 3. Operation
Locations 50 cm Max. • WARNING:
AFTER DE-ENERGIZING, DELAY 5 MINUTES
Non-hazardous BEFORE OPENING.
Location Equipment APRÉS POWER-OFF, ATTENDRE 5 MINUTES
AVANT D'OUVRIR.
42 V DC Max. Sealing Fitting Conduit • WARNING:
4 to 20 mA DC WHEN AMBIENT TEMPERATURE ≥ 65°C, USE
Signal Transmitter THE HEAT-RESISTING CABLES ≥ 90°C.
QUAND LA TEMPÉRATURE AMBIANTE ≥ 65°C,
F0208.ai UTILISEZ DES CÂBLES RÉSISTANTES Á LA
CHALEUR ≥ 90°C.
Non-Hazardous Hazardous Locations Division 2 • Take care not to generate mechanical sparking
Locations when accessing to the instrument and peripheral
devices in a hazardous location.
Non-hazardous
Location Equipment Note 4. Maintenance and Repair
• The instrument modification or parts replacement
42 V DC Max. Sealing Fitting by other than authorized representative of
4 to 20 mA DC Yokogawa Electric Corporation and Yokogawa
Signal Transmitter Corporation of America is prohibited and will void
Canadian Standards Explosionproof Certification.
F0209.ai
d. CSA Intrinsically Safe and Explosion-proof
• All wiring shall comply with local installation Combination for HART/BRAIN Protocol
requirements and local electrical code. Type (Except for EJX90A)

• In hazardous locations, the cable entry devices EJX/EJA-E Series pressure transmitters with
shall be of a certified flameproof type, suitable for optional code /CU1 or /V1U1 can be selected the
the conditions of use and correctly installed. type of protection (CSA Intrinsically Safe or CSA
Explosionproof) for use in hazardous locations.
• Unused apertures shall be closed with suitable
flameproof certified blanking elements. (The plug Note 1. For the installation of this transmitter, once a
attached is flameproof certified.) particular type of protection is selected, any
other type of protection cannot be used. The
• Wiring connection for output signal code Q (Low installation must be in accordance with the
Power type) shall follow the diagram below. description about the type of protection in this
instruction manual.
Pressure Transmitters
Note 2. In order to avoid confusion, unnecessary
SUPPLY + Voltmeter marking is crossed out on the label other
A than the selected type of protection when the
Power Supply transmitter is installed.
+ +
2.4.3 ATEX Certification
––

SUPPLY –

Three-Wire Connection

Pressure Transmitters

SUPPLY + Voltmeter Power Supply (1) Technical Data
A + +

– – a. ATEX Intrinsically Safe for HART/BRAIN
SUPPLY – Protocol Type (Except for EJX90A)

Four-Wire Connection Caution for ATEX Intrinsically safe type.

F0219.ai Note 1. EJX/EJA-E Series pressure transmitters with
optional code /KS21 for potentially explosive
atmospheres.

• No. DEKRA 11ATEX0228 X
• Applicable Standard:

EN 60079-0:2012+A11:2013
EN 60079-11:2012

IM 01C25A01-01E

<2. Handling Cautions> 17
Note 5. Special Conditions for Safe Use
• Type of Protection and Marking code:
Ex ia IIC T4 Ga WARNING

Ex ia IIIC T85 ºC T100 ºC T120 ºC Db • When the enclosure of the Pressure Transmitter
• Group: II is made of aluminum, if it is mounted in an area
• Category: 1G, 2D where the use of category 1G equipment is
• Ambient Temperature for EPL Ga: required, it must be installed such, that, even in
the event of rare incidents, ignition sources due to
–50 to 60°C impact and friction sparks are excluded.
• Ambient Temperature for EPL Db:
• Electrostatic charges on the coated parts of
–30* to 60°C Pressure Transmitter shall be avoided.
* –15°C when /HE is specified.
• Process Temperature (Tp.): 120°C max. • Electrostatic charge may cause an exlosion
• Maximum Surface Temperature for EPL Db: hazard. Avoid any actions that cause the
T85°C (Tp.: 80°C) generation of electrostatic charge, such as rubbing
T100°C (Tp.: 100°C) with a dry cloth on coating face of the product.
T120°C (Tp.: 120°C)
• Enclosure: IP66 / IP67 • In case of the enclosure of the Pressure
To satisfy IP66 or IP67, apply waterproof glands to Transmitter with paint layers, if it is mounted in an
the electrical connection port. area where the use of category 2D equipment is
required, it shall be installed in such a way that the
Note 2 Electrical Data risk from electrostatic discharges and propagating
• In type of explosion protection intrinsic safety Ex ia brush discharges caused by rapid flow of dust is
IIC or Ex ia IIIC, only for connection to a certified avoided.
intrinsically safe circuit with following maximum
values: b. ATEX Intrinsically Safe for Fieldbus Type
Ui = 30 V (Except for EJX90A)
Ii = 200 mA
Pi = 0.9 W Caution for ATEX Intrinsically safe type.
(Linear Source)
Maximum internal capacitance; Ci = 27.6 nF Note 1. EJX/EJA-E series pressure transmitters with
Maximum internal inductance; Li = 0 µH optional code /KS26 are applicable for use in
hazardous locations.
When the lightning protector option is specified,
the apparatus is not capable of withstanding the • No. KEMA 04ATEX1116 X
500V insulation test required by EN60079-11. This • Applicable Standard:
must be taken into account when installing the EN 60079-0:2012+A11:2013
apparatus.
EN 60079-11:2012
Note 3. Installation
• Refer to the control drawing. All wiring shall comply Note 2. Ratings
with local installation requirements. Type of Protection and Marking Code:
Ex ia IIC/IIB T4 Ga
[Control Drawing] Ex ia IIIC T85°C T100°C T120°C Db
Group: II
Hazardous Location Nonhazardous Location Category: 1G, 2D
Ambient Temperature for EPL Ga: –40 to 60°C
Pressure Transmitters + Ambient Temperature for EPL Db: –30* to 60°C
Safety Barrier *1
+ * –15°C when /HE is specified.
Supply – Maximum Process Temperature (Tp.): 120°C
Maximum Surface Temperature for EPL Db.
– T85°C (Tp.: 80°C)
T100°C (Tp.: 100°C)
F0210.ai T120°C (Tp.: 120°C)
Ambient Humidity:
*1: Any safety barriers must be a linear power source 0 to 100% (No condensation)
whose output current is resistively limited. Degree of Protection of the Enclosure:
IP66 / IP67
Note 4. Maintenance and Repair
• The instrument modification or parts replacement
by other than authorized representative of
Yokogawa Electric Corporation is prohibited and
will void DEKRA Intrinsically safe Certification.

IM 01C25A01-01E

<2. Handling Cautions> 18

Electrical Data Note 6. Installation Instructions
• When combined with Trapezoidal and Rectangular [Installation Diagram]

output characteristic FISCO model IIC barrier Terminator
Ui = 17.5 V, Ii = 380 mA, Pi = 5.32 W,
Ci = 3.52 nF, Li = 0 μH + Pressure
• When combined with Linear characteristic barrier − SUPPLY Transmitter
Ui = 24 V, Ii = 250 mA, Pi = 1.2 W,
Ci = 3.52 nF, Li = 0 μH + Transmitter
• When combined with Trapezoidal or Rectangular −

output characteristic FISCO model IIB barrier + Transmitter
Ui = 17.5 V, Ii = 460 mA, Pi = 5.32 W, −
Ci = 3.52 nF, Li = 0 μH
Hazardous Location
Note 3. Installation Non-Hazardous Location
• All wiring shall comply with local installation
requirements. (Refer to the installation diagram) Terminator

Note 4. Maintenance and Repair +− F0231.ai
• The instrument modification or parts replacement Safety Barrier
by other than authorized representative of
Yokogawa Electric Corporation is prohibited and +−
will void DEKRA Intrinsically safe Certification.
• In the rating 1(*1), the output current of the barrier
Note 5. Special Conditions for Safe Use
must be limited by a resistor ‘Ra’ such that Io = Uo/
WARNING
Ra.
• In the case where the enclosure of the Pressure
Transmitter is made of aluminium, if it is mounted • In the rating 2(*2), the output of the barrier must be
in an area where the use of category 1 G
apparatus is required, it must be installed such, the characteristics of the trapezoid or the rectangle
that even in the event of rare incidents, ignition
sources due to impact and friction sparks are and this transmitter can be connected to Fieldbus
excluded.
equipment which are in according to the FISCO
• Electrostatic charge may cause an explosion
hazard. Avoid any actions that cause the model.
generation of electrostatic charge, such as rubbing
with a dry cloth on coating face of the product. • The terminators may be built in by a barrier.

• In the case where the enclosure of the Pressure • More than one transmitter may be connected to
Transmitter is made of aluminum, if it is mounted in
an area where the use of category 2D apparatus is the power supply line.
required, it shall be installed in such a way that the
risk from electrostatic discharges and propagating • The terminator and the safety barrier shall be
brush discharges caused by rapid flow of dust is
avoided. certified.

• To satisfy IP66 or IP67, apply waterproof glands to Electrical data:
the electrical connection port.
Maximum Input Voltage Ui: 24 V
• When the lightning protector option is specified,
the apparatus is not capable of withstanding the Maximum Input Current Ii: 250 mA *1:
500V insulation test required by EN60079-11. Maximum Input Power Pi: 1.2 W Rating 1
Maximum Internal Capacitance Ci: 3.52 nF
This must be taken into account when installing
the apparatus. Maximum Internal Inductance Li: 0 μH

or

Maximum Input Voltage Ui: 17.5 V

Maximum Input Current Ii: 380 mA

Maximum Input Power Pi: 5.32 W

Maximum Internal Capacitance Ci: 3.52 nF

Maximum Internal Inductance Li: 0 μH *2:
or Rating 2

Maximum Input Voltage Ui: 17.5 V

Maximum Input Current Ii: 460 mA

Maximum Input Power Pi: 5.32 W

Maximum Internal Capacitance Ci: 3.52 nF

Maximum Internal Inductance Li: 0 μH

IM 01C25A01-01E

<2. Handling Cautions> 19

c. ATEX Intrinsically Safe for Fieldbus Type Note 4. Maintenance and Repair
for EJX90A • The instrument modification or parts replacement
by other than authorized representative of
Caution for ATEX Intrinsically safe type. Yokogawa Electric Corporation is prohibited and
will void DEKRA Intrinsically safe Certification.
Note 1. EJX multivariable transmitter with optional
code /KS26 are applicable for use in hazardous Note 5. Special Conditions for Safe Use
locations:
WARNING
• No. KEMA 06ATEX0278 X
• Applicable Standard: • In the case where the enclosure of the Pressure
Transmitter is made of aluminium, if it is mounted
EN 60079-0:2012+A11:2013 in an area where the use of category 1G apparatus
EN 60079-11:2012 is required, it must be installed such, that even in
the event of rare incidents, ignition sources due to
Note 2. Ratings impact and friction sparks are excluded.
Type of Protection and Marking Code:
Ex ia IIC/IIB T4 Ga • Electrostatic charge may cause an explosion
Ex ia IIIC T85°C T100°C T120°C Db hazard. Avoid any actions that cause the
Group: II generation of electrostatic charge, such as rubbing
Category: 1G, 2D with a dry cloth on coating face of the product.
Ambient Temperature for EPL Ga:
–40 to 60°C • In the case where the enclosure of the Pressure
Ambient Temperature for EPL Db: Transmitter is made of aluminum, if it is mounted in
–30* to 60°C an area where the use of category 2D apparatus is
required, it shall be installed in such a way that the
* –15°C when /HE is specified. risk from electrostatic discharges and propagating
Maximum Process Temperature (Tp.): 120°C brush discharges caused by rapid flow of dust is
Maximum Surface Temperature for EPL Db. avoided.
T85°C (Tp.: 80°C)
T100°C (Tp.: 100°C) • To satisfy IP66 or IP67, apply waterproof glands to
T120°C (Tp.: 120°C) the electrical connection port.
Ambient Humidity:
0 to 100% (No condensation) • When the lightning protector option is specified,
Degree of Protection of the Enclosure: the apparatus is not capable of withstanding the
IP66/IP67 500V insulation test required by EN60079-11.
Electrical Data
• When combined with Trapezoidal or Rectanglar This must be taken into account when installing
output characteristic FISCO model IIC barrier the apparatus.

[Supply circuit (terminals + and -)] Note 6. Installation instructions
Ui = 17.5 V, Ii = 380 mA, Pi = 5.32 W, [Installation Diagram]
Ci = 3.52 nF, Li = 0 µH
Terminator RTD
[Sensor circuit] Pt100.3wire
Uo = 7.63 V, Io = 3.85 mA, Po = 0.008 W, +
Co = 4.8 µF, Lo = 100 mH − SUPPLY Pressure
• When combined with Linear characteristic barrier Transmitter

[Supply circuit (terminals + and -)] + Transmitter
Ui = 24 V, Ii = 250 mA, Pi = 1.2 W, −
Ci = 3.52 nF, Li = 0 µH
+ Transmitter
[Sensor circuit] −
Uo = 7.63 V, Io = 3.85 mA, Po = 0.008 W,
Co = 4.8 µF, Lo = 100 mH Hazardous Location
• When combined with Trapezoidal or Rectanglar Non-Hazardous Location
output characteristic FISCO model IIB barrier
Terminator F0232.ai
[Supply circuit (terminals + and -)]
Ui = 17.5 V, Ii = 460 mA, Pi = 5.32 W, +−
Ci = 3.52 nF, Li = 0 µH Safety Barrier

[Sensor circuit] +−
Uo = 7.63 V, Io = 3.85 mA, Po = 0.008 W,
Co = 4.8 µF, Lo = 100 mH

Note 3. Installation
• All wiring shall comply with local installation
requirements. (Refer to the installation diagram)

IM 01C25A01-01E

<2. Handling Cautions> 20

• In the rating 1(*1), the output current of the barrier • Category: 2G, 2D
must be limited by a resistor ‘Ra’ such that Io = Uo/ • Enclosure: IP66 / IP67
• Temperature Class for gas-poof:
Ra.
T6, T5, and T4
• In the rating 2(*2), the output of the barrier must be • Ambient Temperature for gas-proof:
the characteristics of the trapezoid or the rectangle
–50 to 75°C (T6), –50 to 80°C (T5), and
and this transmitter can be connected to Fieldbus –50 to 75°C (T4)
• Process Temperature (Tp.) for gas-proof:
equipment which are in according to the FISCO –50 to 85°C (T6), –50 to 100°C (T5), and
model. –50 to 120°C (T4)
• Maximum Surface Temperature for dust-proof:
• The terminators may be built in by a barrier. T85°C (Tamb.: –30* to 75°C, Tp.: –30* to 85°C)
* –15°C when /HE is specified.
• More than one transmitter may be connected to
the power supply line.

• The terminator and the safety barrier shall be

certified. Note 2. Electrical Data
Electrical data: • Supply voltage: 42 V dc max.
32 V dc max. (FOUNDATION Fieldbus and
Supply circuit PROFIBUS PA type)
9 to 28 V dc, 27 mW (Low Power type)
Maximum Input Voltage Ui: 24 V 9 to 30 V dc, 250 mW (RS485 Modbus
Communication Type)
Maximum Input Current Ii: 250 mA *1: • Output signal: 4 to 20 mA
Maximum Input Power Pi: 1.2 W Rating 1 15 mA (FOUNDATION Fieldbus and PROFIBUS PA
Maximum Internal Capacitance Ci: 3.52 nF type)
1 to 5 V (Low Power type)
Maximum Internal Inductance Li: 0 μH RS485 Modbus (RS485 Modbus Communication
Type)
or

Maximum Input Voltage Ui: 17.5 V

Maximum Input Current Ii: 380 mA

Maximum Input Power Pi: 5.32 W

Maximum Internal Capacitance Ci: 3.52 nF

Maximum Internal Inductance Li: 0 μH *2: Note 3. Installation
or Rating 2 • All wiring shall comply with local installation
requirement.
Maximum Input Voltage Ui: 17.5 V • Cable glands, adapters and/or blanking elements
with a suitable IP rating shall be of Ex d IIC/Ex tb
Maximum Input Current Ii: 460 mA IIIC certified by ATEX and shall be installed so as
to maintain the specific degree of protection (IP
Maximum Input Power Pi: 5.32 W Code) of the equipment.
• Wiring connection for output signal code Q (Low
Maximum Internal Capacitance Ci: 3.52 nF Power type) shall follow the diagram below.

Maximum Internal Inductance Li: 0 μH Pressure Transmitters

Sensor circuit SUPPLY + Voltmeter
Maximum Output Voltage Uo: 7.63 V A +
Maximum Output Current Io: 3.85 mA
Maximum Output Power Po: 0.008 W
Maximum Internal Capacitance Co: 4.8 μF
Maximum Internal Inductance Lo: 100 mH

• RTD sensor is prepared by the user. Power Supply
The sensor signal line must suited a test voltage of +

500Vac. ––

d. ATEX Flameproof Type SUPPLY –

Caution for ATEX flameproof type. Three-Wire Connection

Note 1. EJX/EJA-E Series pressure transmitters with Pressure Transmitters
optional code /KF22 or /V1F are applicable for
use in hazardous locations. SUPPLY + Voltmeter Power Supply
A + +
• No. KEMA 07ATEX0109 X
• Applicable Standard: – –
SUPPLY –
EN 60079-0:2012+A11:2013
EN 60079-1:2007, EN60079-31:2014 Four-Wire Connection
• Type of Protection and Marking Code:
Ex d IIC T6...T4 Gb, Ex tb IIIC T85°C Db F0220.ai
• Group: II

IM 01C25A01-01E

<2. Handling Cautions> 21

Note 4. Operation  ATEX Intrinsically Safe Ex ic
• Keep the “WARNING” label attached to the
transmitter. Caution for ATEX intrinsically safe Ex ic
WARNING: AFTER DE-ENERGIZING, DELAY • Applicable Standard:
5 MINUTES BEFORE OPENING. WHEN THE
AMBIENT TEMP.≥65°C, USE HEAT-RESISTING EN 60079-0:2012+A11:2013
CABLE AND CABLE GLAND ≥90°C. EN 60079-11:2012
• Take care not to generate mechanical sparking • Type of Protection and Marking Code:
when accessing to the instrument and peripheral
devices in a hazardous location. II 3G Ex ic IIC T4 Gc
• Ambient Temperature: –30* to +60°C
Note 5. Specific Conditions of Use
* –15°C when /HE is specified.
WARNING
• Ambient Humidity:
• Electrostatic charge may cause an explosion 0 to 100% (No condensation)
hazard. Avoid any actions that cause the
generation of electrostatic charge, such as rubbing • Maximum Process Temperature: 120°C
with a dry cloth on coating face of the product. • IP Code: IP66
• Ambient pollution degree: 2
• In the case where the enclosure of the Pressure • Overvoltage category: I
Transmitter is made of aluminium, if it is mounted
in an area where the use of category 2D apparatus Note 1. Electrical Data
is required, it shall be installed in such a way Ui = 30 V
that the risk from electrostatic discharges and Ci = 27.6 nF
propagating brush discharges caused by rapid Li = 0 µH
flow of dust is avoided.
Note 2. Installation
• The instrument modification or parts replacement • All wiring shall comply with local installation
by other than an authorized Representative of requirements. (refer to the control drawing)
Yokogawa Electric Corporation is prohibited and • Cable glands, adapters and/or blanking elements
will void the certification. shall be of Ex “n”, Ex “e” or Ex “d” and shall be
installed so as to maintain the specified degree of
• The fasteners used to fasten the transmitter protection (IP Code) of the transmitters.
enclosure onto the sensor capsule is special
fastener, and the property class of it is Note 3. Maintenance and Repair
A2-50(A4-50) or more. • The instrument modification or parts replacement
by other than authorized representative of
e. ATEX Intrinsically Safe and ATEX Yokogawa Electric Corporation is prohibited and
Flameproof Combination for HART/BRAIN will void ATEX intrinsically safe.
Protocol Type (Except for EJX90A)
[Control Drawing]
EJX/EJA-E Series pressure transmitters with optional
code /KU22 or /V1U1 can be selected the type of Hazardous Area Nonhazardous Area
protection ATEX Flameproof, Intrinsically Safe. Ex ia,
or Ex ic for use in hazardous area. Pressure + Associated
Apparatus
Note 1. For the installation of this transmitter, once a Transmitters –
particular type of protection is selected, any
other type of protection cannot be used. The F0212.ai
installation must be in accordance with the
description about the type of protection in this Note 4. Specific Conditions of Use
user’s manual.
WARNING
Note 2. For combined approval types
Once a device of multiple approval type is • Electrostatic charge may cause an explosion
installed, it should not be re-installed using any hazard. Avoid any actions that cause the
other approval types. Apply a permanent mark generation of electrostatic charge, such as rubbing
in the check box of the selected approval type with a dry cloth on coating face of the product.
on the certification label on the transmitter to
distinguish it from unused approval types. • When the lightning protector option is specified,
the apparatus is not capable of withstanding the
500V insulation test required by EN60079-11. This
must be taken into account when installing the
apparatus.

IM 01C25A01-01E

<2. Handling Cautions> 22
Note 4. Specific Conditions of Use
f. ATEX Intrinsically Safe Ex ic for Fieldbus
Type (Except for EJX90A)

Caution for ATEX Intrinsically safe Ex ic. WARNING
EJX/EJA-E Series pressure transmitters with optional
code /KN26 are applicable for use in hazardous • Electrostatic charge may cause an explosion
locations. hazard. Avoid any actions that cause the
• Applicable Standard: gerenation of eletrostatic charge, such as rubbing
with a dry cloth on coating face of the product.
EN 60079-0:2012+A11:2013
EN 60079-11:2012 • When the lightning protector option is specified,
• Type of Protection and Marking Code: the apparatus is not capable of withstanding the
500V insulation test required by EN60079-11. This
II 3G Ex ic IIC T4 Gc must be taken into account when installing the
• Ambient Temperature: –30* to +60°C apparatus.

* –15°C when /HE is specified. (2) Electrical Connection

• Maximum Process Temperature: 120°C A mark indicating the electrical connection type is
• Ambient Humidity: stamped near the electrical connection port. These
marks are as followed.
0 to 100% (No condensation)
• IP Code: IP66
• Ambient pollution degree: 2
• Overvoltage category: I

Note 1. Electrical Data Screw Size Marking
Ui = 32 V
Ci = 3.52 nF ISO M20 × 1.5 female M
Li = 0 µH
ANSI 1/2 NPT female N or W

Note 2. Installation Location of the mark
• All wiring shall comply with local installation
requirements. (refer to the control drawing) F0214.ai
• When installing the transmitter in “ic” FISCO
system or FNICO system, follow the installation (3) Installation
requirements of each system.
• Cable glands, adapters and/or blanking elements
shall be of Ex “n”, Ex “e” or Ex “d” and shall be
installed so as to maintain the specified degree of
protection (IP Code) of the transmitters.

Note 3. Maintenance and Repair WARNING
• The instrument modification or parts replacement
by other than authorized representative of • All wiring shall comply with local installation
Yokogawa Electric Corporation is prohibited and requirements and the local electrical code.
will void ATEX intrinsically safe.
• There is no need for conduit seal in Division 1
[Control Drawing] and Division 2 hazardous locations because this
product is sealed at the factory.
Hazardous Area Nonhazardous Area

+ Associated (4) Operation
Transmitter Apparatus
WARNING
–
• OPEN CIRCUIT BEFORE REMOVING COVER.
F0233.ai INSTALL IN ACCORDANCE WITH THIS USER’S
MANUAL
• Above drawing shows the installation of Entity
system. • Take care not to generate mechanical sparking
When installing the transmitters in “ic” FISCO when access to the instrument and peripheral
system or FNICO system, follow the installation devices in a hazardous location.
requirements of each system.

IM 01C25A01-01E

<2. Handling Cautions> 23

(5) Maintenance and Repair  Tag plate for intrinsically safe Ex ia for Fieldbus

WARNING No. KEMA 04ATEX1116 X
Ex ia IIC/IIB T4 Ga Ta:-40 to 60°C
The instrument modification or parts replacement by Ex ia IIIC T85°C T100°C T120°C Db Ta:-30(-15) to 60°C
other than an authorized Representative of Yokogawa MAX PROCESS TEMP.(Tp.):120°C
Electric Corporation is prohibited and will void the T85°C(Tp.:80°C), T100°C(Tp.:100°C), T120°C(Tp.:120°C)
certification. Enclosure: IP66/IP67
FISCO field device(IIC/IIB)
(6) Name Plate Entity parameters Ui=24V, Ii=250mA, Pi=1.2W, Ci=3.52nF, Li=0μH

 Name plate *3 D
WARNING

POTENTIAL ELECTROSTATIC CHARGING HAZARD - SEE USER'S MANUAL.

 Tag plate for intrinsically safe Ex ic for Fieldbus

Ex ic IIC T4 Gc
IP66
Tamb -30(-15) TO 60°C
MAX. PROCESS TEMP. 120°C
Ui=32V, Ci=3.52nF, Li=0µH

 Tag plate for flameproof type No. KEMA 07ATEX0109 X WARNING

Ex d IIC T6...T4 Gb, Ex tb IIIC T85°C Db POTENTIAL ELECTROSTATIC CHARGING HAZARD - SEE USER'S MANUAL.
Enlcosure : IP66/IP67
TEMP. CLASS T6 T5 T4 [EJX90A]
PROCESS TEMP.(Tp.) -50 TO 85 100 120 °C  Tag plate for intrinsically safe Ex ia for Fieldbus
Tamb. (for GAS) -50 TO 75 80 75 °C
T85°C(Tamb.: -30(-15) TO 75°C, Tp.:-30(-15) TO 85°C)(for Dust) No. KEMA 06ATEX0278 X
Ex ia IIC/IIB T4 Ga Ta: -40 to 60°C
*3 D Ex ia IIIC T85°C T100°C T120°C Db Ta: -30(-15) to 60°C
WARNING MAX PROCESS TEMP.(Tp.): 120°C
T85°C (Tp.: 80°C), T100°C (Tp.: 100°C), T120°C (Tp.: 120°C)
AFTER DE-ENERGIZING, DELAY 5 MINUTES BEFORE ENCLOSURE: IP66/IP67
OPENING. Supply circuit
WHEN THE AMBIENT TEMP. ≥ 65°C, USE THE FISCO field device(IIC/IIB)
HEAT-RESISTING CABLE & CABLE GLAND ≥ 90°C Entity Parameter Ui=24V, Ii=250mA, Pi=1.2W, Ci=3.52nF, Li=0µH
POTENTIAL ELECTROSTATIC CHARGING HAZARD -SEE THE USER’S MANUAL Sensor circuit
Uo=7.63V, Io=3.85mA, Po=0.008W, Co=4.8uF, Lo=100mH
F0215-1.ai
*3
[Except for EJX90A]
 Tag plate for intrinsically safe Ex ia for HART/BRAIN POTENTIAL ELECTROSTATIC CHARGING HAZARD-SEE USER'S MANUAL.

No. DEKRA 11ATEX 0228 X F0215-3.ai
Ex ia IIC T4 Ga Ta: -50 TO 60°C
Ex ia IIIC T85°C T100°C T120°C Db Ta:-30(-15) TO 60°C MODEL: Specified model code.
IP66/IP67 STYLE: Style code.
MAX. PROCESS TEMP.(Tp.) 120°C SUFFIX: Specified suffix code.
T85°C(Tp.:80°C), T100°C(Tp.:100°C), T120°C(Tp.:120°C) SUPPLY: Supply voltage.
Ui=30V, Ii=200mA , Pi=0.9W, Ci=27.6nF, Li=0µH OUTPUT: Output signal.
MWP: Maximum working pressure.
*3 D CAL RNG: Specified calibration range.
WARNING NO.: Serial number and year of production*1.
TOKYO 180-8750 JAPAN:
POTENTIAL ELECTROSTATIC
CHARGING HAZARD The manufacturer name and the address*2.
- SEE USER’S MANUAL
*1: The first number in the second block of “NO.” column
 Tag plate for intrinsically safe Ex ic for HART/BRAIN is the last one number of the production year.

Ex ic IIC T4 Gc
IP66
Tamb -30(-15) TO 60°C
MAX. PROCESS TEMP. 120°C
Ui=30V, Ci=27.6nF, Li=0µH

WARNING second block

POTENTIAL ELECTROSTATIC NO. 91K819857 132 7
CHARGING HAZARD
- SEE USER’S MANUAL The year 2011
*2: “180-8750” is a zip code which represents the
F0215-2.ai
following address.
2-9-32 Nakacho, Musashino-shi, Tokyo Japan
*3: The identification number of Notified Body.

IM 01C25A01-01E

<2. Handling Cautions> 24

2.4.4 IECEx Certification Note 3. Installation
• In any safety barrier used output current must be
Model EJX Series pressure transmitters with optional limited by a resistor ‘R’ such that Io=Uz/R.
code /SU21 can be selected the type of protection • The safety barrier must be IECEx certified.
(IECEx Intrinsically Safe Ex ia, Ex ic or flameproof) for • Input voltage of the safety barrier must be less
use in hazardous locations. than 250 Vrms/Vdc.
EJX Series pressure transmitters with optional code • The instrument modification or parts replacement
/SS26 can be selected the type of protection (IECEx by other than authorized representative of
intrinsically safe Ex ia or Ex ic) for use in hazardous Yokogawa Electric Corporation is prohibited and
locations. will void IECEx certification.
EJX Series pressure transmitters with
optional code /SU2 can be selected the type of [Ex ia]
protection (IECEx Intrinsically Safe/type n or
flameproof) for use in hazardous locations. Hazardous Location Nonhazardous Location
Group IIC, Zone 0
Note 1. For the installation of this transmitter, once a
particular type of protection is selected, any EJX/EJA-E Series IECEx certified
other type of protection cannot be used. The Pressure Transmitters Safety Barrier
installation must be in accordance with the
description about the type of protection in this + +
instruction manual.
Supply – –
Note 2. For combined approval types, once a device of
multiple approval type is installed, it should not *1: When using non isolation barrier, (*1)
be re-installed using any other approval types. connect (*1) to IS barrier system.
Apply a permanent mark in the check box of the F0236.ai
selected approval type on the certification label
on the transmitter to distinguish it from unused Note 4. Specific Condition of Use
approval types.
WARNING
a. IECEx Intrinsically Safe Ex ia for HART/
BRAIN Protocol Type (Except for EJX90A) • Electrostatic charge may cause an explosion
hazard. Avoid any actions that cause the
Caution for IECEx Intrinsically safe Ex ia. generation of electrostatic charge, such as rubbing
with a dry cloth on coating face of the product.
Note 1. EJX/EJA-E series pressure transmitters with
optional code /SU21 are applicable for use in • When the enclosure of the pressure transmitter
hazardous locations is made of aluminum, if it is mounted in an area
where the use of EPL Ga equipment is required, it
• No. IECEx DEK 11.0081X must be installed such, that, even in the event of
• Applicable Standard: IEC 60079-0:2011, rare incidents, ignition sources due to impact and
friction sparks are excluded.
IEC 60079-11:2011
• Ex ia IIC T4 Ga • Electrostatic charges on the coated parts of
• Ambient Temperature: –50 to 60°C Pressure Transmitter shall be avoided.
• Max. Process Temp.: 120°C
• Enclosure: IP66/IP67 b. IECEx Intrinsically Safe Ex ic for HART/
To satisfy IP66 or IP67, apply waterproof glands to BRAIN Protocol Type (Except for EJX90A)

the electrical connection port. Caution for IECEx Intrinsically safe Ex ic.

Note 2. Electrical Data Note 1. EJX/EJA-E series pressure transmitters with
Maximum Input Voltage (Ui) = 30 V optional code /SU21 are applicable for use in
Maximum Input Current (Ii) = 200 mA hazardous locations
Maximum Input Power (Pi) = 0.9 W (linear source)
Maximum Internal Capacitance (Ci) = 27.6 nF • No. IECEx DEK 13.0061X
Maximum Internal Inductance (Li) = 0 μH • Applicable Standard: IEC 60079-0:2011,

When the lightning protector option is specified, the IEC 60079-11:2011
apparatus is not capable of withstanding the 500V • Ex ic IIC T4 Gc
insulation test required by IEC60079-11. This must be • Ambient Temperature: –30* to 60°C
taken into account when installing the apparatus.
* -15 °C when /HE is specified.
• Max. Process Temp.: 120°C
• IP Code: IP66
• Overvoltage Category: I

IM 01C25A01-01E

<2. Handling Cautions> 25

Note 2. Electrical Data Note 2. Electrical Data
Maximum Input Voltage (Ui) = 30 V • Intrinsically safe ratings are as follows:
Maximum Internal Capacitance (Ci) = 27.6 nF [Entity]
Maximum Internal Inductance (Li) = 0 μH Maximum Input Voltage (Ui) = 24 V
Maximum Input Current (Ii) = 250 mA
Note 3. Installation Maximum Input Power (Pi) = 1.2 W
• The pressure transmitter is allowed to be installed Maximum Internal Capacitance (Ci) = 3.52 nF
in “nL” systems, on condition that the output Maximum Internal Inductance (Li) = 0 μH
parameters of “nL” source (associated energy- [FISCO IIC]
limited apparatus) are suitable to the above Maximum Input Voltage (Ui) = 17.5 V
mentioned input parameters of the pressure Maximum Input Current (Ii) = 380 mA
transmitter and the cable parameters. Maximum Input Power (Pi) = 5.32 W
• Cable glands, adapters and/or blanking elements Maximum Internal Capacitance (Ci) = 3.52 nF
shall be of Ex “n”, Ex “e” or Ex “d” and shall be Maximum Internal Inductance (Li) = 0 μH
installed so as to maintain the specified degree of [FISCO IIB]
protection of the equipment. Maximum Input Voltage (Ui) = 17.5 V
• The instrument modification or parts replacement Maximum Input Current (Ii) = 460 mA
by other than authorized representative of Maximum Input Power (Pi) = 5.32 W
Yokogawa Electric Corporation is prohibited and Maximum Internal Capacitance (Ci) = 3.52 nF
will void IECEx certification. Maximum Internal Inductance (Li) = 0 μH

[Ex ic] Note 3. Installation

Hazardous Location Nonhazardous Location [Ex ia]

EJX/EJA-E Series Associated apparatus Terminator
Pressure Transmitters
+
Supply + – + Pressure
– – Transmitter

F0237.ai + Field Instruments
–
Note 4. Specific Condition of Use
+ Field Instruments
WARNING –

• Electrostatic charge may cause an explosion Terminator Hazardous Location
hazard. Avoid any actions that cause the Non-Hazardous Location
generation of electrostatic charge, such as rubbing +–
with a dry cloth on coating face of the product. Safety Barrier F0238.ai

• The apparatus is not capable of dielectric strength +–
tests required by IEC 60079-11.
This must be taken into account when installing
the apparatus.

c. IECEx Intrinsically Safe Ex ia for Fieldbus • In the rating 1(*1), the output current of the barrier
Type (Except for EJX90A) must be limited by a resistor ‘Ra’ such that Io = Uo/
Ra.
Caution for IECEx Intrinsically safe Ex ia.
• In the rating 2(*2), the output of the barrier must be
Note 1. EJX/EJA-E Series pressure transmitters with the characteristics of the trapezoid or the rectangle
optional code /SS26 are applicable for use in and this transmitter can be connected to Fieldbus
hazardous locations. equipment which are in according to the FISCO
model.
• No. IECEx DEK 12.0016X
• Applicable Standard: IEC 60079-0:2011, • The terminators may be built in by a barrier.
• More than one transmitter may be connected to
IEC 60079-11:2011, IEC 60079-26: 2006
• Ex ia IIC/IIB T4 Ga the power supply line.
• Ambient Temperature: –40 to 60°C • The terminator and the safety barrier shall be
• Max. Process Temp.: 120°C
certified.

IM 01C25A01-01E

<2. Handling Cautions> 26

Electrical data: *1: Note 2. Electrical Data
Rating 1 • Intrinsically safe ratings are as follows:
Maximum Input Voltage Ui: 24 V Maximum Input Voltage (Ui) = 32 V
Maximum Input Current Ii: 250 mA *2: Maximum Internal Capacitance (Ci) = 3.52 nF
Maximum Input Power Pi: 1.2 W Rating 2 Maximum Internal Inductance (Li) = 0 μH
Maximum Internal Capacitance Ci: 3.52 nF
Maximum Internal Inductance Li: 0 μH Note 3. Installation
• The instrument modification or parts replacement
or by other than authorized representative of
Maximum Input Voltage Ui: 17.5 V Yokogawa Electric Corporation and will void IECEx
Maximum Input Current Ii: 380 mA Intrinsically safe and type n certification.
Maximum Input Power Pi: 5.32 W • The pressure transmitter is allowed to be installed
Maximum Internal Capacitance Ci: 3.52 nF in “nL” systems, on condition that the output
Maximum Internal Inductance Li: 0 μH parameters of “nL” source (associated energy-
limited apparatus) are suitable to the above
or mentioned input parameters of the pressure
Maximum Input Voltage Ui: 17.5 V transmitter and the cable parameters.
Maximum Input Current Ii: 460 mA • When installing the transmitter in “ic” FISCO
Maximum Input Power Pi: 5.32 W system or FNICO system, follow the installation
Maximum Internal Capacitance Ci: 3.52 nF requirements of each system.
Maximum Internal Inductance Li: 0 μH • Cable glands, adapters and/or blanking elements
shall be of Ex “n”, Ex “e” or Ex “d” and shall be
Note 4. Specific Condition of Use installed so as to maintain the specified degree of
protection of the equipment.
WARNING • For multiple types of protection, the selected Ex
marking on the marking plate shall be checked at
• Electrostatic charge may cause an explosion the time of installation.
hazard. Avoid any actions that cause the
generation of electrostatic charge, such as rubbing [Ex ic]
with a dry cloth on coating face of the product.
Hazardous Location Nonhazardous Location
• In the case where the enclosure of the pressure
transmitter is made of aluminum, if it is mounted EJX/EJA-E Series Associated apparatus
in an area where the use of EPL Ga equipment is Pressure Transmitters
required, it shall be installed in such a way that , +
even in the event of rare incidents, ignition sources Supply + –
due to impact and friction sparks are excluded. –

• When the lightning protector option is specified, F0237.ai
the apparatus is not capable of withstanding the
500 V insulation test required by IEC 60079-11. • Above drawing shows the installation of entity
This must be taken into account when installing system. When installing the transmitter in “ic”
the apparatus. FISCO system or FNICO system, follow the
installation requirements of each system.
d. IECEx Intrinsically Safe Ex ic for Fieldbus
Type (Except for EJX90A) Note 4. Specific Condition of Use

Caution for IECEx Intrinsically safe Ex ic. WARNING

Note 1. EJX/EJA-E Series pressure transmitters with • Electrostatic charge may cause an explosion
optional code /SS26 are applicable for use in hazard. Avoid any actions that cause the
hazardous locations. generation of electrostatic charge, such as rubbing
with a dry cloth on coating face of the product.
• No. IECEx DEK 13.0064X
• Applicable Standard: IEC 60079-0:2011, • When the lightning protector option is specified,
the apparatus is not capable of withstanding the
IEC 60079-11:2011 500 V insulation test required by IEC 60079-11.
• Ex ic IIC T4 Gc This must be taken into account when installing
• Ambient Temperature: –30* to 60°C the apparatus.

* -15 °C when /HE is specified.
• Max. Process Temp.: 120°C
• IP Code: IP66
• Overvoltage Category: I

IM 01C25A01-01E

<2. Handling Cautions> 27

e. IECEx Flameproof Type Note 3. Operation
• WARNING:
Caution for IECEx flameproof type. AFTER DE-ENERGIZING, DELAY 5 MINUTES
BEFORE OPENING.
Note 1. EJX/EJA-E Series pressure transmitters with • WARNING:
optional code /SF2 or /SU21 are applicable for WHEN THE AMBIENT TEMP.≥65°C, USE HEAT-
use in hazardous locations: RESISTING CABLE AND CABLE GLAND ≥90°C.
• Take care not to generate mechanical sparking
• No. IECEx CSA 07.0008 when accessing to the instrument and peripheral
• Applicable Standard: IEC60079-0:2011, devices in a hazardous location.
• Electrostatic charge may cause an explosion
IEC60079-1:2007-4 hazard. Avoid any actions that cause the
• Flameproof for Zone 1, Ex d IIC T6...T4 Gb generation of electrostatic charge, such as rubbing
• Enclosure: IP66/IP67 with a dry cloth on coating face of the product.
• Maximum Process Temperature: 120°C (T4),
Note 4. Maintenance and Repair
100°C (T5), 85°C (T6) • The instrument modification or parts replacement
• Ambient Temperature: –50 to 75°C (T4), by other than authorized representative of
Yokogawa Electric Corporation is prohibited and
–50 to 80°C (T5), –50 to 75°C (T6) will void IECEx Certification.
• Supply Voltage: 42 V dc max. • Electrical Connection
A mark indicating the electrical connection type is
32 V dc max. (FOUNDATION Fieldbus and stamped near the electrical connection port. These
PROFIBUS PA type) marks are as followed.
9 to 28 V dc, 27 mW (Low Power type)
9 to 30 V dc, 250 mW (RS485 Modbus Screw Size Marking
Communication Type)
• Output Signal: 4 to 20 mA dc ISO M20 × 1.5 female M
15 mA (FOUNDATION Fieldbus and PROFIBUS PA
type) ANSI 1/2 NPT female N or W
1 to 5 V (Low Power type)
RS485 Modbus (RS485 Modbus Communication
Type)

Note 2. Wiring Location of the mark
• In hazardous locations, the cable entry devices
shall be of a certified flameproof type, suitable for F0222.ai
the conditions of use and correctly installed.
• Unused apertures shall be closed with suitable 2.5 EMC Conformity Standards
flameproof certified blanking elements.
• Wiring connection for output signal code Q (Low EN 61326-1 Class A, Table 2 (for use in industrial
Power type) shall follow the diagram below. locations)
EN 61326-2-3
Pressure Transmitters EN 61326-2-5 (for Fieldbus)

SUPPLY + Voltmeter Power Supply CAUTION
A + +
To meet EMC regulations, Yokogawa recommends
–– that customers run signal wiring through metal
conduits or use shielded twisted-pair cabling when
SUPPLY – installing EJX/EJA-E Series transmitters in a plant.

Three-Wire Connection

Pressure Transmitters

SUPPLY + Voltmeter Power Supply
A + +

––

SUPPLY –
Four-Wire Connection

F0221.ai

IM 01C25A01-01E

<2. Handling Cautions> 28

2.6 Pressure Equipment Model Capsule PS*1 V(L) PS.V Category*2
Directive (PED) code (bar) (bar.L)
100
EJ510 A, B, C 700 0.1 10 Article 4,

EJX610A D 700 0.1 70 Paragraph 3

(1) General 100 (SEP)
700
• EJX/EJA-E Series pressure transmitters are EJ510, D 0.1 70 III
categorized as piping under the pressure accessories EJX610A 700
section of directive 2014/68/EU, which corresponds with code /
to Article 4, Paragraph 3 of PED, denoted as Sound 160
Engineering Practice (SEP). PE3 250
250
• EJX110A-MS, EJX110A-HS, EJ530, A, B, C 0.1 10 Article 4,
EJX110A-VS, EJA110E with /HG, EJ130, 500
EJ440, EJ510-D, EJ530-D, EJX630A D 0.1 70 Paragraph 3
EJX610A-D, and EJX630A-D can be used above 500
200 bar and therefore considered as a part of a (SEP)
pressure retaining vessel where category III, Module
H applies. These models with option code /PE3 EJ530, D 0.1 70 III
conform to that category. EJX630A
with code /

PE3

L 0.01 1.6 Article 4,
M, H
EJX910A 0.01 2.5 Paragraph 3

(SEP)

EJX910A M, H 0.01 2.5 III
with code /
(2) Technical Data
PE3
• Models without /PE3
Article 4, Paragraph 3 of PED, denoted as Sound EJX930A M, H Article 4,
Engineering Practice (SEP). 0.01 5.0 Paragraph 3

• Models with /PE3 (SEP)
Module: H
Type of Equipment: Pressure Accessory-Vessel EJX930A M, H 0.01 5.0 III
Type of fluid: Liquid and Gas with code /
Group of fluid: 1 and 2
PE3

Capsule PS*1 PS.V *1: PS is maximum pressure for vessel itself based on
code (bar) (bar.L) Pressure Equipment Directive 2014/68/EU. Refer to
160 General Specification for maximum working pressure of a
M, H, V transmitter.
250
*2: Referred to Table 1 covered by ANNEX II of EC Directive
250 on Pressure Equipment Directive 2014/68/EU.

Model V(L) Category*2 (3) Operation
EJA110E
0.01 1.6
EJ110 F, L CAUTION
Article 4,
• The temperature and pressure of fluid should
EJX110A Paragraph 3 be maintained at levels that are consistent with
normal operating conditions.
EJA110E M, H, V 0.01 2.5 (SEP)
with code M, H, V • The ambient temperature should be maintained
0.01 2.5 III at a level that is consistent with normal operating
/HG conditions.
EJ110
with code / • Please take care to prevent water hammer and the
like from inducing excessive pressures in pipes
PE3 and valves. If phenomena are likely, install a safety
valve or take some other appropriate measure to
EJ130 M, H 500 Article 4, prevent pressure from exceeding PS.
0.01 5.0 Paragraph 3
• Take appropriate measures at the device or
(SEP) system level to protect transmitters if they are to be
operated near an external heat source.
EJ130 M, H 500 0.01 5.0 III
with code /

PE3

EJ310 L, M, A, B 160 Article 4,
0.01 1.6 Paragraph 3
EJ430 H, A, B 160
(SEP)
EJ440 C, D 500
C, D 500 Article 4,
EJ440 0.01 1.6 Paragraph 3
with code /
(SEP)
PE3
Article 4,
0.1 5.0 Paragraph 3

(SEP)

0.1 5.0 III

IM 01C25A01-01E

<2. Handling Cautions> 29

2.7 Safety Requirement
Standards

Applicable standard: EN 61010-1, EN 61010-2-30,
C22.2 No.61010-1, C22.2 No.61010-2-030

(1) Pollution Degree 2

"Pollution degree" describes the degree to which
a solid, liquid, or gas which deteriorates dielectric
strength or surface resistivity is adhering. " 2 " applies
to normal indoor atmosphere. Normally, only non-
conductive pollution occurs. Occasionally, however,
temporary conductivity caused by condensation must
be expected.

(2) Installation Category I

"Overvoltage category(Installation category)"
describes a number which defines a transient
overvoltage condition. It implies the regulation for
impulse withstand voltage. " I " applies to electrical
equipment which is supplied from the circuit when
appropriate transient overvoltage control means
(interfaces) are provided.

(3) Altitude of installation site:

Max. 2,000 m above sea level

(4) Indoor/Outdoor use

IM 01C25A01-01E

<3. Installation> 30

3. Installation

IMPORTANT Vertical pipe mounting Vertical pipe mounting

• When welding piping during construction, take (Process connector upside) (Process connector downside)
care not to allow welding currents to flow through
the transmitter. U-bolt nut Mounting
bracket
• Do not step on this instrument after installation.
• For EJ430, EJ440 and EJ438, 50 mm
(2-inch) pipe
the atmospheric opening is located on the low
pressure side cover flange. For EJ530 and U-bolt
EJX630A whose capsule code is A, B, or C, the
pipe of the atmospheric opening is located on the Transmitter F0303.ai
pressure detecting section. These openings must mounting bolt
not face upward.
Figure 3.3 Transmitter Mounting
(Vertical Impulse Piping Type)

Vertical pipe mounting Horizontal pipe mounting

Pipe Zero-adjustment screw U-bolt nut (L) 50 mm
(backside of the instrument) (2-inch) pipe

 Capsule code
6 
F00301.ai

Figure 3.1 EJ530 and EJX630A Horizontal
Mounting Position

U-bolt U-bolt (L)
nut (S)
3.1 Mounting F0304.ai
Mounting
■ The transmitter can be mounted on a nominal bracket U-bolt (S)
50 mm (2-inch) pipe using the mounting bracket
supplied, as shown in Figure 3.2 and 3.3. Tighten the Figure 3.4 EJ510 and EJ530 Mounting
(four) bolts that hold the transmitter with a torque of
approximately 39 N·m {4 kgf·m}. 3.2 Mounting the Diaphragm Seals

Transmitter IMPORTANT
mounting bolt
• Please use a gasket with an inside diameter (ød)
U-bolt nut that is greater than the diameter of the diaphragm
seal. If a gasket with a smaller inside diameter is
Mounting bracket U-bolt used, the diaphragm may not function correctly.

50 mm(2-inch) pipe F0302.ai • During the diaphragm seal installation, ensure as
far as possible that no seal liquid head pressure is
Figure 3.2 Transmitter Mounting applied to the diaphragm seals.
(Horizontal Impulse Piping Type)
• Exercise care so as not to damage diaphragm
surfaces. Since the diaphragm protrudes approx.
1 mm from the flange surface, do not place the
pressure detector section face down on a surface
as this can damage the diaphragm.

• Do not sharply bend or twist capillary tube or apply
excessive stress to them.

• Never loosen the four bolts securing the cover
flange or the screws at the joints between the
capillary tube and cover flanges. If the seal liquid
leaks, the transmitter cannot be used.

IM 01C25A01-01E

<3. Installation> 31

3.2.1 EJ210 3.3 Diaphragm Seals Installation
Consideration
The transmitter is mounted on a process using its
high pressure side flange as shown in Figure 3.5. The IMPORTANT
customer should prepare the mating flange, gasket, stud
bolts and nuts. • When measuring the liquid level of the tank, the
minimum liquid level (zero point) must be set to a
Gasket level at least 50 mm above the center of the high
pressure side diaphragm seal (see Figure 3.7).
Stud bolt F0305.ai
Nut • Correctly install the diaphragm seals on the high
Figure 3.5 EJ210 Mounting and low pressure sides of the process, checking
the label on each seal.
3.2.2 EJ118 and EJ438
• To avoid measuring error duets temperature
Mount the diaphragm seals using the flanges as shown in difference between the two diaphragm seals,
Figure 3.6. The mating flange, gasket, bolts and nuts are capillary tube must be bound together. The
to be procured by the customer. capillary tube must be securely fixed to the tank
wall to prevent movement by wind or vibration.
Bolt Diaphragm Flange Nut If the capillary tube is too long, loosely coil the
extra tube portion (coil diameter of 300 mm or
more) and secure the coiled tube with a clamp.

Low

IMPORTANT pressure
side
Install the sealed diaphragm
so that the shank positions
downward.

ød High Minimum
pressure liquid level
Gasket side
50 mm minimum
The product is Correctly install the diaphragm
shipped with these
parts assembled. seals on the high and low pressure

sides of the process (The label on

each diaphragm seal is marked

HIGH or LOW). F0306.ai The transmitter should
be installed as low as
Figure 3.6 Mounting the Diaphragm Seals possible below the
position where the high
Figure 3.7 pressure side
diaphragm seal is
installed.

F0307.ai

Installing the Diaphragm Seals to a
Tank

IM 01C25A01-01E

<3. Installation> 32
Low pressure side
IMPORTANT

The transmitter should be installed at least 600 mm below P
the high pressure (HP) process connection to ensure a
positive head pressure of fill fluid. Pay special attention to h
vacuum applications.
If it can not be installed at least 600 mm below the HP High
process connection, please use the equation below:
(+) pressure
h= (P–P0) × 0.102 [mm]
ds side

0

(–)

h: Vertical height between the HP process connection Figure 3.8 F0308.ai
and the transmitter (mm)
h≤0: I nstall the transmitter at least h (mm) below the Example of Installation to Tank
HP process connection (Caution on Installation)
h>0: I nstall the transmitter at most h (mm) above the
HP process connection 3.4 Mounting the Flushing
Connection Ring
P: Pressure in the tank (Pa abs)
P0: Minimum working pressure limit of the transmitter (Pa 3.4.1 Mounting to Pressure Detector
Section
abs) See below table.
[For fill fluid code A, B, C, D, E] The flushing connection ring is mounted to the pressure
detector section as shown in Figure 3.9.
Wetted parts Capillary Process connection size At the factory shipment, the flushing connection ring is
material length code already assembled and attached to process detector
code 1 to 5m section.
SW 6 to 10m 2, 8 3 4,W
SE 1 to 5m 6790 3190 Pressure-detector section
SY 6 to 10m 10030 3520
HW 1 to 5m Ring
TW 6 to 10m 6790 3190
UW 1 to 5m 10030 3520
6 to 10m
1 to 5m 3190
6 to 10m 3520
1 to 5m 19150 6140
6 to 10m 8290
9620 3620
4210
9540 4750
6050

[For fill fluid code 1, 2, 4]

Wetted parts Capillary Process connection size Spiral gasket
material length code Ring holder
code 1 to 5m Groove for
SW 6 to 10m 2, 8 3 4,W installing
SE 1 to 5m 2570 320 spiral gasket
SY 6 to 10m 4680 530
HW 1 to 5m 2570 320 View from pressure
TW 6 to 10m 4680 530 detector section Vent/Drain plug
1 to 5m
6 to 10m 320 F0309.ai
1 to 5m 530
6 to 10m 10220 2050 Figure 3.9 Mounting to Pressure Detector Section

3450 (1) Mount the ring holder on the ring and loosely tighten
4270 570 the mounting screws.
960
(2) Place the spiral gasket in the ring groove. With the
ds: Specific gravity of fill fluid (at 25°C). See below table. ring correctly aligned and flush with the face of the
pressure detector, securely tighten each ring holder’s
Fill fluid A, 1, 4 B C, 2 D E mounting screws.
code 1.07 0.94
1.09 1.90 to 1.09 (3) Position the ring so that the vent/drain plugs are
ds: Specific 1.92 aligned straight up and down.
gravity

IM 01C25A01-01E

<3. Installation> 33

3.4.2 Mounting to Process Flange 3.5 Affixing the Teflon Film

Tighten the bolts to completely close the gap between the IMPORTANT
ring and the pressure detector section.
The mating flange, gasket, stud bolts and nuts are to The FEP Teflon option includes a teflon film and
procured by the customer. fluorinated oil. Before mounting the transmitter to the
process flange, affix the teflon film as follows:
Mating flange Spiral gasket
Ring 1) Position the diaphragm seal so that the diaphragm
is in an upward position.
Gasket Diaphragm
Pressure-detector 2) Pour the fluorinated oil on the diaphragm and
section gasket area covering it completely and evenly. Be
careful not to scratch the diaphragm or change the
its shape.

3) Affix the teflon film over the diaphragm and gasket
area.

4) Next, carefully inspect the cover and try to identify
any entrapped air between the diaphragm and
the teflon film. The air must be removed to ensure
optimum performance. If air pockets are present,
use your fingers to remove the air by starting at the
center of the diaphragm and work your way out.

5) Position the gasket on the Teflon film.
6) Mount the transmitter onto the process flange.

F0310.ai Teflon film
PART No.
Figure 3.10 Mounting to Process Flange
EJ210 F9347YD

IMPORTANT 2 inch EJ118
EJ438 F9347YA

Fluorinated oil 3 inch F9347XA
[PART No. : F9145YN]
• Confirm that there is no gap between the ring Diaphragm
and the process-detector section after they are
mounted on the process flange. A gap can lead to Gasket area F0311.ai
a sudden, explosive release of process fluids. Figure 3.11 Affixing the Teflon Film

• When mounting or removing the ring, take care not
to tilt the pressure detector downward as the ring
can slip off and cause injury.

• When re-mounting the ring, use the new spiral
gasket as shown in below table.

Table 3.1 Spiral Gasket for Pressure Detector
Section Side*

Part number Size Description
F9350SV ø100×ø120×t4.5 For 3-inch flange
F9970XF ø100×ø120×t4.5 For 3-inch flange**
F9350ST ø70×ø90×t4.5 For 2-inch flange
F9970XD ø70×ø90×t4.5 For 2-inch flange**
F9346ZH ø60×ø75×t4.5 For 1 1/2-inch flange
F9970XB ø60×ø75×t4.5 For 1 1/2-inch flange**

*: Material; 316SST (Hoop), PTFE Teflon (Filler)
**: For oil-prohibited use (Option code: /K1, /K2, /K5, /K6)

IM 01C25A01-01E

<3. Installation> 34

3.6 Rotating Transmitter Section 3.7 Changing the Direction of
Integral Indicator
The transmitter section can be rotated approximately
360° (180° to either direction or 360° to one direction IMPORTANT
from the original position at shipment, depending on the
configuration of the instrument.) It can be fixed at any Always turn OFF power, release pressure and
angle within above range. remove a transmitter to non-hazardous area before
disassembling and reassmbling an indicator.
1) Remove the two setscrews that fasten the transmitter
section and capsule assembly, using the Allen An integral indicator can be installed in the following
wrench. three directions.

2) Rotate the transmitter section slowly and stop it at F0313.ai
designated position.
Figure 3.13 Integral Indicator Direction
3) Tighten the two setscrews to a torque of 1.5 N·m.
IMPORTANT
IMPORTANT
The terminal box cover is locked by an Allen head
Do not rotate the transmitter section more than the bolt (a shrouding bolt) on ATEX flameproof type
above limit. transmitters. When the shrouding bolt is driven
clockwise by an Allen wrench, it is going in and cover
Vertical impulse piping type lock is released, and then the cover can be opened.
When a cover is closed it should be locked by a
Pressure-detector section shrouding bolt without fail. Tighten the shrouding bolt
Stopper to a torque of 0.7 N·m.
Rotate 0 to ±180° segments
1) Remove the cover.
Conduit connection 2) While supporting the integral indicator with one hand,
Transmitter section
loosen its two mounting screws.
Horizontal impulse piping type 3) Dismount the LCD board assembly from the CPU

Transmitter section assembly. When doing this, carefully pull the LCD
board assembly straight forward so as not to damage
Rotate 0 to ±180° segments the connector pins between it and the CPU assembly.
4) After rotating the LCD, align both the LCD board
Conduit connection assembly and CPU assembly connectors and engage
Zero-adjustment screw them.
5) Insert and tighten the two mounting screws.
6) Replace the cover.

CPU assembly

Pressure-detector section Integral 90° 90°
indicator

F0312.ai

Figure 3.12 Rotating Transmitter Section LCD board assembly
(Left Side High Pressure Type) Mounting screw

Amplifier cover F0314.ai
Figure 3.14 Rotating Integral Indicator

IM 01C25A01-01E

<4. Installing Impulse Piping> 35

4. Installing Impulse Piping

4.1 Impulse Piping Installation (3) Tightening the Process Connector
Mounting Bolts
Precautions
After connecting an impulse line, tighten the process
The impulse piping that connects the process connector mounting bolts uniformly.
outputs to the transmitter must convey the process
pressure accurately. If, for example, gas collects in (4) Removing the Impulse Piping Connecting
a liquid-filled impulse line, or the drain of a gas-filled Port Dustproof Cap
impulse line becomes plugged, it will not convey the
pressure accurately. Since this will cause errors in the The impulse piping connecting port on the transmitter is
measurement output, select the proper piping method covered with a plastic cap to keep out dust. This cap must
for the process fluid (gas, liquid, or steam). Pay careful be removed before connecting the line. (Be careful not
attention to the following points when routing the impulse to damage the threads when removing this cap. Never
piping and connecting the impulse piping to a transmitter. insert a screwdriver or other tool between the cap and
port threads to remove the cap.)
4.1.1 Connecting Impulse Piping to the
Transmitter (5) Connecting the Transmitter and 3-Valve
Manifold (for differential pressure
(1) Check the High and Low Pressure transmitters)
Connections on the Transmitter (Figure 4.1)
A 3-valve manifold consists of two stop valves to block
Symbols “H” and “L” have been placed on the capsule process pressure and an equalizing valve to equalize
assembly to indicate high and low pressure side. With the pressures on the high and low pressure sides of the
differential pressure transmitters, connect the high transmitter. Such a manifold makes it easier to disconnect
pressure side impulse line to the “H” side, and the low the transmitter from the impulse piping, and is convenient
pressure side impulse line to the “L” side. when adjusting the transmitter zero point.

With gauge/absolute pressure transmitters, connect the There are two 3-valve manifold typs: the pipe-mounting
impulse line to the ‘H’ side. type and the direct-mounting type; care should be taken
with respect to the following points when connecting the
Differential Pressure Transmitter manifold to the transmitter.

“H” and “L” are shown  Pipe-Mounting Type 3-Valve Manifold

Process Process connection
connection
Process connector
Figure 4.1
Bolt F0401.ai Impulse piping Nipple

“H” and “L” Symbols on a Capsule Vent plug 3-valve Ball head
Assembly (optional) manifold lock nut

(2) Changing the Process Connector Piping Stop valve Pipes Pipe
Connections (for differential pressure (low pressure side)
transmitters) Ball head
Equalizing valve lock nut
The impulse piping connection distances can be changed (balancing) Nipple
between 51 mm, 54 mm and 57 mm by changing the
orientation of the process connectors. Stop valve
This is convenient for aligning the impulse line with a (high pressure side)
process connectors.
50 mm(2-inch) pipe Process Process
connector bolts connector

Figure 4.3 F0403.ai

3-Valve Manifold (Pipe-Mounting Type)

57 mm 54 mm 51 mm
Figure 4.2
F0402.ai

Process Connector Impulse Piping
Connection Distances

IM 01C25A01-01E

<4. Installing Impulse Piping> 36

1) Screw nipples into the connection ports on the 4.1.2 Routing the Impulse Piping
transmitter side of the 3-valve manifold, and into
the impulse piping connecting ports on the process (1) Process Pressure Tap Angles
connectors. (To maintain proper sealing, wind sealing
tape around the nipple threads.) If condensate, gas, sediment or other extraneous
material in the process piping gets into the impulse
2) Mount the 3-valve manifold on the 50 mm (2-inch) piping, pressure measurement errors may result. To
pipe by fastening a U-bolt to its mounting bracket. prevent such problems, the process pressure taps must
Tighten the U-bolt nuts only lightly at this time. be angled as shown in Figure 4.5 according to the kind of
fluid being measured.
3) Install the pipe assemblies between the 3-valve
manifold and the process connectors and lightly NOTE
tighten the ball head lock nuts. (The ball-shaped ends
of the pipes must be handled carefully, since they will • If the process fluid is a gas, the taps must be
not seal properly if the ball surface is scratched or vertical or within 45° either side of vertical.
otherwise damaged.)
• If the process fluid is a liquid, the taps must be
4) Now tighten the nuts and bolts securely in the horizontal or below horizontal, but not more than
following sequence: 45° below horizontal.
Process connector bolts → transmitter-end ball head
lock nuts → 3-valve manifold ball head lock nuts → • If the process fluid is steam or other condensing
3-valve manifold mounting bracket U-bolt nuts vapor, the taps must be horizontal or above

 Direct-Mounting Type 3-Valve Manifold horizontal, but not more than 45° above horizontal.

1) Mount the 3-valve manifold on the transmitter. (When [Gas] [Liquid] [Steam]
mounting, use the two gaskets and the four bolts
provided with the 3-valve manifold. Tighten the bolts Pressure 45° 45° 45° 45°
evenly.) taps

2) Mount the process connectors and gaskets on the top Process 45° 45°
of the 3-valve manifold (the side on which the impulse piping
piping will be connected.)
F0405.ai

Bolts Impulse Figure 4.5 Process Pressure Tap Angle
Process piping (For Horizontal Piping)
connector
Stop valve 3-valve (2) Position of Process Pressure Taps and
Gasket manifold Transmitter
Equalizing
valve If condensate (or gas) accumulates in the impulse piping,
it should be removed periodically by opening the drain
Stop valve (or vent) plugs. However, this will generate a transient
disturbance in the pressure measurement, and therefore
Equalizing valve it is necessary to position the taps and route the impulse
Stop valve piping so that any extraneous liquid or gas generated in
the leadlines returns naturally to the process piping.
Impulse • If the process fluid is a gas, then as a rule the
piping
transmitter must be located higher than the process
Gasket Bolts pressure taps.
Process • If the process fluid is a liquid or steam, then as a
Stop valve 3-valve rule the transmitter must be located lower than the
connector manifold process pressure taps.

Figure 4.4 F0404.ai (3) Impulse Piping Slope
The impulse piping must be routed with only an upward or
3-Valve Manifold (Direct-Mounting Type) downward slope. Even for horizontal routing, the impulse
piping should have a slope of at least 1/10 to prevent
NOTE condensate (or gases) from accumulating in the pipes.

After completing the connection of the transmitter and
3-valve manifold, be sure to CLOSE the low pressure
and high pressure stop valves, OPEN the equalizing
valve, and leave the manifold with the equalizing valve
OPEN.
You must do this in order to avoid overloading the
transmitter from either the high or the low pressure
side when beginning operation.

IM 01C25A01-01E

<4. Installing Impulse Piping> 37

(4) Temperature Difference Between Impulse 4.2 Impulse Piping Connection
Piping (for differential pressure Examples
transmitters)
Figure 4.6, 4.7, and 4.8 shows examples of typical
If there is a temperature difference between the high impulse piping connections. Before connecting the
and low impulse lines, the density difference of the fluids transmitter to the process, study the transmitter
in the two lines will cause an error in the measurement installation location, the process piping layout, and
pressure. When measuring flow, impulse lines must be the characteristics of the process fluid (corrosiveness,
routed together so that there is no temperature difference toxicity, flammability, etc.), in order to make appropriate
between them. changes and additions to the connection configurations.

(5) Condensate Pots for Steam Flow Note the following points when referring to these piping
Measurement (for differential pressure examples.
transmitters)
• If the impulse line is long, bracing or supports should
If the liquid in the impulse piping repeatedly condenses be provided to prevent vibration.
or vaporizes as a result of changes in the ambient or
process temperature, this will cause a difference in the • The impulse piping material used must be compatible
fluid head between the high pressure and low pressure with the process pressure, temperature, and other
sides. To prevent measurement errors due to these head conditions.
differences, condensate pots are used when measuring
steam flow. • A variety of process pressure tap valves (main valves)
are available according to the type of connection
(6) Preventing Wind Speed Effects in Very Low (flanged, screwed, welded), construction (globe, gate,
Differential Pressure Measurement or ball valve), temperature and pressure. Select the
(for differential pressure transmitters) type of valve most appropriate for the application.

IMPORTANT Liguid Gas Steam
Orifice Condensate pot
When using a differential pressure transmitter to Tap valve
measure very low pressures (draft pressure), the low Union
pressure connection port is left open to atmospheric or flange
pressure (the reference pressure).
Any wind around the differential pressure transmitter Tee
will therefore cause errors in the measurement. To 3-valve
prevent this, it will be necessary either to enclose the manifold
transmitter in a box, or to connect a impulse line to
the low pressure side and insert its end into a wind Drain valve Drain plug
excluding pot (cylindrical with a base plate). Figure 4.6
F0406.ai
(7) Preventing Freezing
Impulse Piping Connection Examples
If there is any risk that the process fluid in the impulse (for differential pressure transmitters)
piping or transmitter could freeze, use a steam jacket or
heater to maintain the temperature of the fluid. Open Tank Closed Tank Tap valve
Union or flange
NOTE
Vent plug
After completing the connections, close the valves on
the process pressure taps (main valves), the valves at Tee
the transmitter (stop valves), and the impulse piping
drain valves, so that condensate, sediment, dust and
other extraneous material cannot enter the impulse
piping.

Drain valve

Pipe (opened to atmosphere Drain plug
at low pressure side)
F0407.ai

Figure 4.7 Impulse Piping Connection Examples
(EJ210)

IM 01C25A01-01E

<4. Installing Impulse Piping> 38

Liquid Gas Steam (3) Removing the Process Connector Port
Tap valve Dustproof Cap
Union or flange
Union or flange Tap valve The process connector port threads are covered with a
plastic cap to exclude dust. This cap must be removed
Drain plug before connecting the piping. (Be careful not to damage
Drain valve the threads when removing this cap. Never insert a
screwdriver or other tool between the cap and port
Union or Tee threads to remove the cap.)
flange
4.3.2 Routing the Process Piping

Tee Tee

Union or flange (1) Relationship between Process Fluid
Tap valve and Manifold Locations (For the vertical
impulse piping type)
Drain valve Drain valve
Drain plug Drain plug If condensate (or gas) generated in the process piping
were allowed to accumulate, then it would be necessary
F0408.ai to remove it periodically by opening the drain (or
vent) plug. However, this would generate a transient
Figure 4.8 Impulse Piping Connection Examples disturbance in the pressure measurement. Therefore, the
(for gauge/absolute pressure process piping must be routed so that any condensate (or
transmitters) gas) generated in the process piping will not accumulate
in the pressure-sensing assembly of the transmitter.
4.3 Process Piping Installation
Precautions (EJ115) NOTE

4.3.1 Connecting Process Piping to the • If the process fluid is a gas, then as a rule the
Transmitter manifold must be located at the downside of the
pressure-sensing assembly.
(1) Confirming the Process Fluid Flow
Direction • If the process fluid is a liquid, then as a rule the
manifold must be located at the upside of the
The mark “ ” on the manifold indicates the direction in pressure-sensing assembly.
which the process fluid is flowed (from right to left).
When connecting the process piping to the process (2) Pipe Size for Process Piping
connector, confirm the process fluid flow direction.
Use a 15 mm (1/2-inch) pipe for process piping
Flow direction (from right to left) Orifice name plate connection to the process connector.

Process connection Manifold Process connection (3) Preventing Freezing
(outflow side) (inflow side)
If there is any risk that the process fluid in the transmitter
Process connector Process connector pressure-sensing assembly could freeze or solidify, use
(low pressure side) (high pressure side) a steam jacket or heater to maintain the temperature of
the fluid.
F0409.ai
(4) Process Piping Connection Examples
Figure 4.9 Manifold and Flow Direction Indication
Figure 4.10 shows examples of typical process piping
(2) Tightening the Process Connector connections. Before connecting the transmitter to the
Mounting Bolts process, study the transmitter installation location, the
process piping layout, and the characteristics of the
The transmitter is shipped with the process connector process fluid (corrosiveness, toxicity, flammability, etc.), in
mounting bolts only loosely tightened. After connecting order to make appropriate changes and additions to the
the process piping, tighten these bolts uniformly to connection configurations.
prevent leaks with a torque of 39 to 49 N·m {4 to 5 kgf·m}.
Note the following points when referring to these piping
examples.

• The process piping material used must be compatible
with the process pressure, temperature, and other
conditions.

IM 01C25A01-01E

<4. Installing Impulse Piping> 39

• A variety of process piping-mounted stop valves are
available according to the type of connection (flanged,
screwed, welded), construction (globe, gate, or ball
valve), temperature and pressure.
Select the type of valve most appropriate for the
application.

Gas flow measurement Union or flange

Stop valve

Manifold
Process piping

Liquid flow measurement Manifold

Union or flange Stop valve

Process piping F0410.ai

Figure 4.10 Process Piping Connection Examples
(EJ115)

IM 01C25A01-01E

<5. Wiring> 40

5. Wiring 5.2 Connections of External
Wiring to Terminal Box
NOTE
● Terminal Configuration
For FOUNDATION Fieldbus, PROFIBUS PA, and Mod
bus communication types, please refer to each RTD cable connection*
communication manual.
Terminal 4 [B]*
5.1 Wiring Precautions
Terminal 1 Terminal 3 [A]
IMPORTANT
Terminal 2
• Lay wiring as far as possible from electrical noise
sources such as large capacity transformers, *For EJX9A only. F0527.ai
motors, and power supplies.
● Terminal Wiring for 4 to 20 mA output
• Remove electrical connection dust cap before
wiring. SUPPLY + 1 Power supply and output terminals
– 2
• All threaded parts must be treated with External indicator (ammeter) terminals*1*2
waterproofing sealant. (A non-hardening silicone CHECK +– 3 or
group sealant is recommended.) or 2
Status contact output terminals*2
• To prevent noise pickup, do not pass signal and ALARM +– 3 (when /AL is specified)
power cables through the same ducts. 2

• Explosion-protected instruments must be wired Ground terminal
in accordance with specific requirements (and,
in certain countries, legal regulations) in order *1: When using an external indicator or check meter, the
to preserve the effectiveness of their explosion- internal resistance must be 10 Ω or less. A check meter
protected features. or indicator cannot be connected when /AL option is
specified.
• The terminal box cover is locked by an Allen head
bolt (a shrouding bolt) on ATEX flameproof type *2: Not available for FOUNDATION Fieldbus and PROFIBUS
transmitters. When the shrouding bolt is driven PA communication types.
clockwise using an Allen wrench, it gose in. The
cover lock can then be released and the cover can ● Terminal Wiring for 1 to 5 V output
be opened by hand.
When a cover is closed it should be locked by a SUPPLY + 1 Power supply terminals
shrouding bolt without fail. Tighten the shrouding – 2 1 to 5 V DC with HART communication
bolt to a torque of 0.7 N·m. terminals
VOUT +3
Shrouding Bolt –2
Shrouding Bolt
Ground terminal
F0501.ai
● Terminal Wiring for 4 to 20 mA output
Figure 5.1 Shrouding Bolt [EJX9A]

• Plug and seal an unused conduit connection. SUPPLY + 1 Power supply and output terminals
– 2 External indicator (ammeter) terminals *1*2
Pulse or status contact output terminals *2
CHECK +– 3
PULSE +– 2

4
2

Ground terminal

*1: When using an external indicator or check meter, the
internal resistance must be 10Ω or less.
*2: Not available for FOUNDATION Fieldbus communication

type.
F0528.ai

Figure 5.2 Terminal

IM 01C25A01-01E

<5. Wiring> 41

5.2.1 Power Supply Wiring Connection 5.2.3 Status Output Connection

IMPORTANT When option code /AL is specified, connect the external
wiring as shown in Figure 5.7.
Connecting with the commercial AC power supply
will damage the device. Be sure to use the DC power To configure and activate the process alarm function and
supply in the predetermined range. status output, it is necessary to set some parameters.
Refer to each communication manual for procedures.

Connect the power supply wiring to the SUPPLY + and – Transmitter 24V DC
terminals. terminal box Shielded cable+
Distributor
– 250Ω

Power supply Transmitter terminal box External power Magnetic
+ supply 30V DC, valve
– 120mA max
AC power supply
Load resistance is not F0502.ai Use two-wire separately shielded cables.
necessary for 1 to 5 V output. F0504.ai

Figure 5.3 Power Supply Wiring Connection Figure 5.7 Status Output Connection

5.2.2 Configuration Tool Connection

■ 4 to 20 mA output, BRAIN / HART

Connect the configuration tool to the SUPPLY + and –
terminals. (Use hooks.)

Transmitter terminal box Power supply
+

USB –
FieldMate Modem
Ignore the polarity since
PC/FieldMate the configuration tool is
AC-coupled to the
terminal box.
F0503.ai

Figure 5.4 Configuration Tool Connection

■ 1 to 5 V output, HART

Connect the HART communicator or configuration tool to
the SUPPLY - and VOUT (+) terminals. (Use hooks.)

Power supply Transmitter terminal box Voltmeter
+ +
– USB –
FieldMate Modem

PC/FieldMate F0532.ai
Figure 5.5 Four wire connection

Transmitter terminal box Power supply
+

USB –
FieldMate Modem Voltmeter

+

PC/FieldMate –

F0533.ai

Figure 5.6 Three wire connection

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<5. Wiring> 42

5.2.4 Connection Example for EJX910A and EJX930A

Table 5.1 The connection example for simultaneous analog and pulse and alarm, status output. (For HART protocol type)

Connection Description

Analog Output Transmitter Electrical Terminal Distributor

In this case, +SUPPLY + 24V DC
Communication is –
possible (up to a distance – 250Ω
of 2km when a CEV cable PULSE B * * Either B or +
is used.)

Pulse Output Transmitter Electrical Terminal Use the Three-wire shielded cable.
Shielded Cable E
In this case,
No communication is +SUPPLY *1
possible. Electric counter
–
*2 R
PULSE B *

* Either B or +

Status Output Transmitter Electrical Terminal Use the Three-wire shielded cable.

In this case, Shielded Cable E
No communication is Relay
possible. +SUPPLY
Mognetic
– valve

PULSE B* AC power supply

* Either B or + External Power supply
30V DC, 120mA max
(Contact Rating)

Simultaneous When analog and pulse output are used, the length of communication line is subjected to wiring conditions. Refer to
Analog
example 1 to 3. Distributor (or communication medium : ex. EP card)
-Pulse Output *3
+SUPPLY Shielded Cable 24V DC For the shielded cables in this example of
Example 1 *2 R flowmeter installation, use two-wire separately
In this case, Communica –
-tion is possible(up to a 250Ω shielded cables.
distance of 2km when a PULSE B *
CEV cable is used). E(10.5 to 30V DC) This supply voltage requires a power sourse
Counting input with a maximum output current of no less than
Example 2
In this case, Communica * Either B or + Common E/R.
-tion is possible (up to a
distance of 200m when a Transmitter Electrical Terminal Electric counter *1(or communication medium : ex. EP card)
CEV cable is used) and R
= 1kΩ). Shielded Cable Recorder or For the shielded cables in this
other instrument example of flowmeter installation,
+SUPPLY use two-wire separately shielded
– 250Ω
cables.
PULSE B * E(16.4 to 30V DC)
R*2 This supply voltage requires a power
* Either B or + Counting input sourse with a maximum output current
Transmitter Electrical Terminal Common of no less than E/R+25mA.

The supply voltage requires output
Electric counter *1 impedance no more than 1/1000 of R

(load resistance).

Example 3 Recorder or
In this case, No communi other instrument
-cation is possible (when
shielded cable is not used). +SUPPLY 250Ω E(16.4 to 30V DC) This supply voltage requires
– R*2 a power sourse with a
Counting input maximum output current of
PULSE B * Common no less than E/R+25mA.

* Either B or + Electric counter *1
Transmitter Electrical Terminal

The load resistance of pulse output should be used to 1kΩ, 2W.

The range of load If no translation of the pulse output possible by the cable length or the frequency of the pluse output,
resistance R for
the pulse output. the load resistance should be selected by calculation as shown below.

E (V) ≤ R (kΩ) ≤ 0.1 Example of CEV cable capacitance
0.1µF/km
120 C ( µF ) × f ( kHz )

P (mW) = E2 (V) Where C = Cable capacitance (µF)
R (kΩ) E = Supply voltage (V) P = Power ratio of the load resistance
f = Frequency of pulse output (kHz)
R = Value of load resistance (kΩ) (mW)

F0531.ai

*1: To avoid the influence of external noise, use an electric counter which fits to the pulse frequency.
*2: Resistor is not necessary in case of an electric counter which can receive contact pulse signal directly.
*3: When using analog and pulse output simultaneously, the HART communication may be influenced by noise comparing analog output only. Take

countermeasure for noise shown above, e.g. use shield cable etc.

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<5. Wiring> 43

5.2.5 External Temperature Connection • Pulse output and Alarm, Status Output or
(for EJX910A and EJX930A) Simultaneous Analog-Pulse Output
(for EJX910A and EJX930A)
Connect the RTD cable assembly to the Juck Terminal.

Hazardous Location Nonhazardous Location
Transmitter terminal box
Distributor
(Power supply unit)

F0505.ai Receiver
instrument
External Temperature Connection
Figure 5.8

5.3 Wiring

5.3.1 Loop Configuration Receiver
instrument
Since the DPharp uses a two-wire transmission system
for 4 to 20 mA output, signal wiring is also used as power Figure 5.10 F0507.ai
wiring.
Connection between Transmitter and
DC power is required for the transmitter loop. The Distributor
transmitter and distributor are connected as shown below.
For details of the power supply voltage and load (2) Intrinsically Safe Type (4 to 20 mA output)
resistance, see Section 5.6.
With the intrinsically safe type, a safety barrier must be
For 1 to 5 V output, three or four wire system is used. See included in the loop.
(4).
Hazardous Location Nonhazardous Location
(1) General-use Type and Flameproof Type (4
to 20 mA output) Transmitter terminal box

• Analog Output Distributor
(Power supply unit)

Hazardous Location Nonhazardous Location Receiver
instrument

Transmitter terminal box Distributor
(Power supply unit)

Safety barrier F0508.ai

Receiver Figure 5.11 Connection between Transmitter and
instrument Distributor

Figure 5.9 F0506.ai (3) Intrinsically Safe Type (for EJX910A and
EJX930A)
Connection between Transmitter and
Distributor

• Analog Output Nonhazardous Location

Hazardous Location Receiver instrument
Transmitter terminal box Safety barreir (and power supply)
(Isolation type)

Power
supply
Anaolg input

F0509.ai

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<5. Wiring> 44

• Simultaneous Analog-Pulse Output • Four wire connection
Fasten the negative side wiring of both power supply
Hazardous Location Nonhazardous Location
and signal line to the SUPPLY - terminal.

Transmitter terminal box Safety barrier I/O module Hazardous Location Nonhazardous Location
(Isolated type)
Transmitter terminal box
Distributor
sPuopwpelyr (Power supply unit)

Analog input

sPuopwpelyr

Safety barrier Pulse input Receiver
(Isolated type) instrument

F0510.ai F0530.ai

Figure 5.12 Connection between Transmitter, Figure 5.14 Connection between Transmitter,
barrier and receiver Distributor and Receiver

(4) 1 to 5 V output 5.3.2 Wiring Installation

Either three or four wire system can be used. (1) General-use Type and Intrinsically Safe
Power supply line and 1 to 5 V signal line commonly use Type
the SUPPLY - terminal.
With the cable wiring, use a metallic conduit or waterproof
NOTE glands.

With three wire connection, the cable length may • Apply a non-hardening sealant to the terminal box
affect the measurement accuracy of the output signal. connection port and to the threads on the flexible
In either three-wire or four-wire connection, metal conduit for waterproofing.
recommended wiring distance is 200 m or less, and
the use of shielded cable is recommended.

• Three wire connection Flexible metal conduit Apply a non-hardening
A negative wiring shall be commonly used for power sealant to the threads for
Wiring metal waterproofing.
supply and signal line. conduit

Hazardous Location Nonhazardous Location

Transmitter terminal box Distributor Tee
(Power supply unit)
Drain plug
Figure 5.15 F0511.ai

Typical Wiring Using Flexible Metal
Conduit

Receiver
instrument

Figure 5.13 F0529.ai

Connection between Transmitter,
Distributor and Receiver

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<5. Wiring> 45

(2) Flameproof Type • RTD connection components: EJX multivariable
transmitter, two cable glands, and RTD cable.
Wire cables through a flameproof packing adapter, or use Two cable glands are attached.
a flameproof metal conduit.
Electrical connection
 Wiring cable through flameproof packing adapter.
• Apply a non-hardening sealant to the terminal box Cable gland

connection port and to the threads on the flameproof RTD cable
packing adapter for waterproofing. with connector

Flameproof packing Detail of connector
adapter

Flexible metal conduit Transmitter

Wiring metal Apply a non-hardening F0514.ai
conduit sealant to the threads for
waterproofing. • Magnified view of the RTD connector in the
Tee transmitter's terminal box.

Drain plug F0512.ai
Figure 5.16
Typical Cable Wiring Using Flameproof
Packing Adapter

 Flameproof metal conduit wiring ALARM ALARM
• A seal fitting must be installed near the terminal box
Protection Cap Connecting Port
connection port for a sealed construction.
• Apply a non-hardening sealant to the threads of the F0515.ai

terminal box connection port, flexible metal conduit The RTD cable connecting port is covered with a cap to
and seal fitting for waterproofing. keep out dust. The cap should not be removed until you
are ready to install the cable.
Gas sealing device • Components for the cable gland
Non-hazardous area The cable gland assembly consists of an entry, seal,
running coupler, and backnut. Confirm that the seal is
Hazardous area Flameproof flexible attached inside the entry and that the thread size of the
metal conduit cable gland is the same as that for the RTD electrical
Flameproof connection.
heavy-gauge Apply a non-hardening
steel conduit sealant to the threads of 1/2NPT Type
these fittings for
waterproofing Entry with Seal Running
Coupler Backnut
Tee
Drain plug Seal fitting
After wiring, impregnate the fitting
Figure 5.17 with a compound to seal tubing.

F0513.ai M20 Type

Typical Wiring Using Flameproof Metal Gasket
Conduit

5.4 RTD Cable Connection Entry with Seal Running
(EJX910A/EJX930A) Coupler Backnut

Connection of the RTD cable is always required to F0516.ai
measure external temperature. Follow the procedures
below to connect a cable when a cable gland or a conduit CAUTION
is used.
Input/output signal is non-isolated.
5.4.1 Connecting Shielded Cable with Do not turn on power supply until you complete all the
Cable Gland (External temperature wiring work.
input code: -1, -2, -3, and -4)

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<5. Wiring> 46

Procedure (7) Rotate the running coupler another half turn to
(1) Disassemble the cable gland: loosen the running securely tighten the seal on the RTD cable.

coupler to separate the backnut from the entry. (8) Use a protection conduit, if necessary.
(2) Remove the protection cap over the transmitter In this case, insert the cable through the conduit and
attach it to the Backnut.
electrical connection and install the entry on the
electrical connection. Note that a non-hardening CAUTION
sealant should be applied to the threads for a 1/2 NPT
connection and a gasket should be used for an M20 After the cable is secured as explained above, do not
connection. tighten the running coupler any further; to do so could
damage the RTD connection.
F0517.ai Do not pull the cable or subject it to excessive
mechanical shock.
(3) Pass the RTD cable through the running coupler and
backnut assembly. 5.4.2 Connecting Shielded Cable for Con-
duit Use (External temperature input
code: -B, -C, and -D)

• RTD connection components: EJX multivariable
transmitter and RTD cable

F0518.ai

(4) Insert the RTD cable and firmly plug its connector into
the connecting port in the transmitter's terminal box.

F0522.ai

Procedure

(1) Remove the protection cap protecting the RTD
electrical connection and insert the RTD cable.

F0519.ai

(5) Align the running coupler on the entry.

F0520.ai F0523.ai

(6) Turn the running coupler until the seal in the entry (2) Remove the cap protecting the connecting port. Then
comes into contact with the RTD cable. insert the RTD cable and firmly plug the connector
into the connecting port in the transmitter's terminal
box.

(3) Insert the cable through the conduit and attach it to
the RTD electrical connection.

CAUTION

Do not pull the cable or subject it to excessive
mechanical shock.

F0521.ai

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<5. Wiring> 47

5.4.3 Cable Connection RTD Terminal Box 5.5 Grounding
Side
Grounding is always required for the proper operation of
EJX multivariable transmitter RTD I/F is for 3-wire Type transmitters. Follow the domestic electrical requirements
RTD, Pt100. as regulated in each country. For a transmitter with a
Heed the following when wiring an RTD of the 2- or 4-wire built-in lightning protector, grounding should satisfy
type. ground resistance of 10Ω or less.

NOTE Ground terminals are located on the inside and outside of
the terminal box. Either of these terminals may be used.
Please note that a temperature error will occur when
you use a 2-wire RTD because of wiring resistance.
Please do not ground the shield on the RTD side of
the cable.

CAUTION Ground terminal F0525.ai
(inside)
Please use only the cables provided with this Ground terminal
instrument. (outside)
When wiring, be sure not to damage the cable's
insulation or its core. Figure 5.19 Ground Terminals
All the cable cores must have sufficient insulation
around them. 5.6 Power Supply Voltage and
Do not let the signal line contact the shield line. Load Resistance
Do not allow the shield line or the signal line to come
the earth potential voltage. For 4 to 20 mA output only.
When configuring the loop, make sure that the external
2-Wire 3-Wire 4-Wire load resistance is within the range in the figure below.

(Note) In case of an intrinsically safe transmitter, external load
resistance includes safety barrier resistance.

A BA B b Aa Bb 600

Figure 5.18 F0524.ai External E–10.5
load 0.0244
The Method of Wiring for the RTD Side
resistance
R (Ω) R= Communication
applicable range
Table 5.2 The Method of Wiring for the RTD Side 250 BRAIN and HART
RTD Terminal

RTD Terminal A a B b

2-Wire White - Blue1 and Blue2 -

3-Wire White - Blue1 Blue2

4-Wire White open Blue1 Blue2

0 10.5 16.6 25.2 42

NOTE Figure 5.20 Power supply voltage E (V DC) F0526.ai

The color display in the table shows the white line of Relationship between Power Supply
the cable. Voltage and External Load Resistance
The cable color could change depending on the cable
type.
Blue 1 and blue 2 allow changing places.
For 2-wire Type, connect either which is blue1 or
blue2, and give other side as OPEN.

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<6. Operation> 48

6. Operation

NOTE Burnout direction switch

For FOUNDATION Fieldbus, PROFIBUS PA and Modbus Slide switch BO H L
communication types and for the transmitter operating WR E D
confirmation and zeroing by any communication
method, refer to each communication manual. CPU assembly Write protection switch

6.1 Preparation for Starting Burnout direction switch (BO)
Operation
Burnout Direction H L H L
 Confirming that Transmitter is Operating
Properly Switch Position

On the integral indicator Burnout Direction HIGH LOW

• If the wiring system is faulty, the display stays blank. Hardware write protection switch (WR)
• If the transmitter is faulty, an error code is displayed.
Write Protection H LH L
Self-diagnostic error Switch Position E DE D
on the integral indicator
(Faulty transmitter) Write Protection NO YES
(Write enabled) (Write disabled)
F0601.ai
F0602.ai
 Verify and Change Transmitter
Parameter Setting and Values Figure 6.1 Burn-out Direction and Hardware Write
Protection Slide Switch
The parameters related to the following items are set at
factory as specified in order. 6.2 Zero Point Adjustment
• Calibration range
• Integral indicator display After completing preparations for operating the
• Output mode transmitter, adjust the zero point.
• Software damping (optional)
Other parameters like following are shipped with the Zero point adjustment can be done by turning the
default setting. transmitter’s zero-adjustment screw or by using the
• Low-cut communicator. This section describes the procedure
• Process alarm setting for the zero-adjustment screw. For the zero-adjustment
• Static pressure range via communication, procedure, please refer to each
• Signal characterizer communication manual.
• Write protection
To confirm or change the values, please refer to each IMPORTANT
communication manual.
Do not turn off the power to the transmitter
 Output Status Setting at CPU Failure and immediately after performing a zero point adjustment.
Hardware Write Protection Powering off within 30 seconds of performing this
procedure will return the zero point to its previous
Set the switches as shown in the figure below to set the setting.
burn-out direction and write protection. The Burnout
switch is set to the H side for delivery (unless option code 6.2.1 Adjusting Zero Point for Differential
/C1 or /C2 is specified in the order), and the hardware Pressure Transmitters
write protection switch is set to E side except EJX910A
and EJX930A. The setting of the switches can be Before adjusting zero point, make sure that the equalizing
confirmed via communication. valve is open.

Figure 6.2 Zero-adjustment screw cover

F0603.ai

External Zero Adjustment Screw

IM 01C25A01-01E