User’s digitalYEWFLO Series
Manual Vortex Flowmeter
Installation Manual
IM 01F06A01-01EN
1. INTRODUCTION 1
2. HANDLING PRECAUTIONS 2
3. INSTALLATION 3
Integral Type 4. WIRING 4
Vortex Flowmeter 5. BASIC OPERATING PROCEDURES (DISPLAY) 5
6. PARAMETERS 6
7. COMMUNICATION (BRAIN / HART) 7
8. OPERATION 8
9
Remote Type 9. ERRORS AND COUNTERMEASURES FOR 10
Vortex Flow Converter DISPLAY UNIT AND BRAIN PROTOCOL 11
12
Remote Type 10. EXPLOSION PROTECTED TYPE INSTRUMENT 13
Vortex Flowmeter Detector
11. COMMUNICATION (FIELDBUS)
This book is a manual that extract the contents related to the installation and 12. EXPLOSION PROTECTED TYPE INSTRUMENT
wiring from the manuals below. FOR FIELDBUS COMMUNICATION TYPE
There are some differences, but does not affect the safety of the product
performance and use. 13. PED (PRESSURE EQUIPMENT DIRECTIVE)
Document No. Title INSTALLATION AND OPERATING PRECAUTIONS
FOR TIIS FLAMEPROOF EQUIPMENT
IM 01F06A00-01EN digitalYEWFLO Series Vortex Flowmeter
IM 01F06F00-01EN digitalYEWFLO Series Vortex Flowmeter
FOUNDATION Fieldbus Communication Type
IM 01F06A01-01EN
2nd Edition
<Contents> 1
digitalYEWFLO Series IM 01F06A01-01EN 2nd Edition
Vortex Flowmeter
Installation Manual 8. OPERATION ................................................ 31
Contents 8.1 Adjustment.......................................................... 31
8.1.1 Zero Adjustment ....................................... 31
1. INTRODUCTION............................................ 3 8.1.2 Span Adjustment ...................................... 31
8.1.3 Loop Test .................................................. 31
1.1 Using This Instrument Safely.............................. 4 8.1.4 Totalizer Start and Totalizer Reset............ 32
1.2 Warranty ................................................................ 5 8.1.5 Setting of Pulse Output (Scaling) ............. 32
1.3 ATEX Documentation........................................... 6 8.1.6 Setting of Burnout Switch ......................... 32
8.1.7 Setting of Write Protect Switch................. 33
2. HANDLING PRECAUTIONS ........................ 7 8.1.8 Power Failure ........................................... 33
2.1 Checking Model and Specifications .................. 7 8.2 Adjustment for Manual Mode............................ 33
2.2 Transportation and Storage Precautions .......... 7 8.2.1 Low Cut Adjustment ................................. 33
8.2.2 Zero Tuning .............................................. 33
3. INSTALLATION ............................................. 8
9. ERRORS AND COUNTERMEASURES
3.1 Installation Precautions....................................... 8 FOR DISPLAY UNIT AND BRAIN
3.2 Piping Precautions............................................... 8 PROTOCOL................................................. 35
3.3 Maintenance of Piping ....................................... 12
3.4 Cryogenic and High Process Temperature 9.1 Large Errors or Unstable Output ...................... 35
9.2 The Indication Goes to Zero at Certain
Version Insulation .............................................. 13
3.5 Mounting Procedures ........................................ 13 Time...................................................................... 35
9.3 No Output When The Fluid is Flowing ............. 36
4. WIRING ........................................................ 17 9.4 Output is Indicated at Zero Flow....................... 37
9.5 Multi-Variable Type (/MV) ................................... 38
4.1 Load Resistance of Output Condition ............. 17
4.2 Selection of Wires .............................................. 18 10. EXPLOSION PROTECTED TYPE
4.3 Connection.......................................................... 18 INSTRUMENT.............................................. 39
4.4 Connection of DYC Remote Type Signal
10.1 ATEX .................................................................... 39
Cable .................................................................... 21 10.2 FM......................................................................... 43
4.5 End Processing Method of DYC Remote Type 10.3 IECEx ................................................................... 47
10.4 CSA ...................................................................... 50
Signal Cable ........................................................ 22 10.5 TIIS ....................................................................... 53
4.5.1 For Remote Type Vortex Flowmeter
11. COMMUNICATION (FIELDBUS) ................ 54
(DY-N)....................................................... 22
4.5.2 For DYA Remote Type Converter............. 23 11.1 Amplifier for Fieldbus Communication Type .. 54
4.6 Wiring Procedures and Precautions................ 24 11.2 Connection of Devices....................................... 54
4.7 Grounding ........................................................... 25 11.3 Host Setting ........................................................ 55
11.4 Power-on of digitalYEWFLO and Bus.............. 56
5. BASIC OPERATING PROCEDURES 11.5 Generation of Alarm ........................................... 56
(DISPLAY).................................................... 26
11.5.1 Indication of Alarm .................................... 56
5.1 Display Configuration........................................ 26 11.5.2 Alarms and Events ................................... 58
11.6 Simulation Function........................................... 58
6. PARAMETERS ............................................ 27
6.1 digitalYEWFLO Parameters .............................. 27
6.2 Parameter Configuration................................... 27
6.3 Self-Diagnostic (Error Code List) ..................... 28
7. COMMUNICATION (BRAIN / HART).......... 29
7.1 Connection Method for the BT200.................... 29
7.2 Connection Method for the HART
Configuration Tool ............................................. 30
2nd Edition : Nov. 2015 (KP) IM 01F06A01-01EN
All Rights Reserved. Copyright © 2015, Yokogawa Electric Corporation
<Contents> 2
12. EXPLOSION PROTECTED TYPE
INSTRUMENT FOR FIELDBUS
COMMUNICATION TYPE ........................... 59
12.1 ATEX .................................................................... 59
12.2 FM......................................................................... 64
12.3 IECEx ................................................................... 67
13. PED (PRESSURE EQUIPMENT
DIRECTIVE) ................................................. 69
INSTALLATION AND OPERATING PRECAUTIONS
FOR TIIS FLAMEPROOF EQUIPMENT ................70
Revision Information
IM 01F06A01-01EN
<1. INTRODUCTION> 3
1. INTRODUCTION
Thank you for purchasing the digitalYEWFLO ■ Safety and Modification Precautions 1
Series Vortex flowmeter. • The following general safety precautions must
This manual provides the basic guidelines for be observed during all phases of operation, INTRODUCTION
installation and wiring procedures of integral type service, and repair of this instrument. Failure
vortex flowmeter, remote type vortex flow detector, to comply with these precautions or with
and remote type vortex flow converter through the specific WARNINGS given elsewhere in
communication tool. this manual violates safety standards of
It does not provide the product specific functional design, manufacture, and intended use of the
specifications and explanations, maintenance, instrument. Yokogawa assumes no liability for
troubleshooting. For the items which are not the customer’s failure to comply with these
covered in this manual, read the applicable user’s requirements. If this instrument is used in
manuals on the front page. These manuals can a manner not specified in this manual, the
be downloaded from the website of Yokogawa. To protection provided by this instrument may be
ensure correct use of the instrument, read these impaired.
manuals thoroughly and fully understand how to • The following safety symbol marks are used in
operate the instrument before operating it. this manual and instrument.
Website address: http://www.yokogawa.com/fld/doc/
WARNING
■ Regarding This Manual
A WARNING sign denotes a hazard. It calls
• This manual should be provided to the end attention to procedure, practice, condition or the
user. like, which, if not correctly performed or adhered
to, could result in injury or death of personnel.
• The contents of this manual may be changed
without prior notice. CAUTION
• All rights are reserved. No part of this manual A CAUTION sign denotes a hazard. It calls
may be reproduced in any form without attention to procedure, practice, condition or the
Yokogawa’s written permission. like, which, if not correctly performed or adhered
to, could result in damage to or destruction of the
• Yokogawa makes no warranty of any kind with product.
regard to this material, including, but not limited
to, implied warranties of merchantability and IMPORTANT
suitability for a particular purpose.
An IMPORTANT sign denotes that attention is
• All reasonable effort has been made to ensure required to avoid damage to the instrument or
the accuracy of the contents of this manual. system failure.
However, if any errors or omissions are found,
please inform Yokogawa. NOTE
• The specifications covered by this manual are A NOTE sign denotes information necessary
limited to those for the standard type under the for essential understanding of operation and
specified model number break-down and do not features.
cover custom-made instruments.
• Please note that this manual may not be
revised for any specification changes,
construction changes or operating part changes
that are not considered to affect function or
performance.
• Yokogawa assumes no responsibilities for this
product except as stated in the warranty.
• If the customer or any third party is harmed by
the use of this product, Yokogawa assumes
no responsibility for any such harm owing to
any defects in the product which were not
predictable, or for any indirect damages.
IM 01F06A01-01EN
<1. INTRODUCTION> 4
1.1 Using This Instrument Safely (2) Wiring
(1) Installation WARNING
WARNING • The wiring of the vortex flowmeter must
be performed by expert engineer or skilled
• Installation of the vortex flowmeter must personnel. No operator shall be permitted to
be performed by expert engineer or skilled perform procedures relating to wiring.
personnel. No operator shall be permitted to
perform procedures relating to installation. • When connecting the wiring, check that the
supply voltage is within the range of the
• The vortex flowmeter must be installed within voltage specified for this instrument before
the specification conditions. connecting the power cable. In addition,
check that no voltage is applied to the power
• The vortex flowmeter is a heavy instrument. cable before connecting the wiring.
Be careful that no damage is caused to
personnel through accidentally dropping (3) Operation
it, or by exerting excessive force on the
vortex flowmeter. When moving the vortex WARNING
flowmeter, always use a trolley and have at
least two people carry it. • Do not open the cover in wet weather or
humid environment. When the cover is open,
• When the vortex flowmeter is processing stated enclosure protection is not applicable.
hot fluids, the instrument itself may become
extremely hot. Take sufficient care not to get • When opening the cover, wait for more than
burnt. 2 minutes after turning off the power.
• Where the fluid being processed is a toxic (4) Maintenance
substance, avoid contact with the fluid and
avoid inhaling any residual gas, even after WARNING
the instrument has been taken off the piping
line for maintenance and so forth. • Maintenance of the vortex flowmeter should
be performed by the trained personnel
• Do not apply excessive weight, for example, having knowledge of safety standard. No
a person stepping on the vortex flowmeter. operator shall be permitted to perform any
operations relating to maintenance.
• Do not open the cover in wet weather or
humid environment. When the cover is open, • Do not open the cover in wet weather or
stated enclosure protection is not applicable. humid environment. When the cover is open,
stated enclosure protection is not applicable.
• When opening the cover, wait for more than
2 minutes after turning off the power. • When opening the cover, wait for more than
2 minutes after turning off the power.
• All procedures relating to installation must
comply with the electrical code of the country • Always conform to maintenance procedures
where it is used. outlined in this manual. If necessary, contact
Yokogawa.
• When maintaining the instrument, read
user’s manual as listed on the front page. If
necessary, contact Yokogawa.
IM 01F06A01-01EN
<1. INTRODUCTION> 5
(5) Explosion Protected Type Instrument (10) CE Marking
WARNING CE Marking is indicated on the name plate
of non-explosion protected type and ATEX
• The instruments are products which have explosion protected type.
been certified as explosion protected type
instruments. Strict limitations are applied 1.2 Warranty 1
to the structures, installation locations,
external wiring work, maintenance and • The terms of this instrument that are INTRODUCTION
repairs, etc. of these instruments. Sufficient guaranteed are described in the quotation.
care must be taken, as any violation of We will make any repairs that may become
the limitations may cause dangerous necessary during the guaranteed term free of
situations. Be sure to read Chapter 10 charge.
“EXPLOSION PROTECTED TYPE
INSTRUMENT” or Chapter 12 “EXPLOSION • Please contact our sales office if this instrument
PROTECTED TYPE INSTRUMENT FOR requires repair.
FIELDBUS COMMUNICATION TYPE”
before handling the instruments. For TIIS • If the instrument is faulty, contact us with
flameproof type instruments, be sure to concrete details about the problem and the
read “INSTALLATION AND OPERATING length of time it has been faulty, and state the
PRECAUTIONS FOR TIIS FLAMEPROOF model and serial number. We would appreciate
EQUIPMENT” at the end of this manual. the inclusion of drawings or additional
information.
• Only trained persons use this instrument in
the industrial location. • The results of our examination will determine
whether the meter will be repaired free of
• Take care not to generate mechanical charge or on an at-cost basis.
spark when access to the instrument and
peripheral devices in hazardous locations. ■ The guarantee will not apply in the
following cases:
(6) European Pressure Equipment Directive
(PED) • Damage due to negligence or insufficient
maintenance on the part of the customer.
WARNING
• Problems or damage resulting from handling,
• When using the instrument in compliance operation or storage that violates the intended
with PED, be sure to read Chapter 13 “PED use and specifications.
(PRESSURE EQUIPMENT DIRECTIVE)”
before use. • Problems that result from using or performing
maintenance on the instrument in a location
(7) Modification that does not comply with the installation
Yokogawa will not be liable for malfunctions or location specified by Yokogawa.
damage resulting from any modification made
to this instrument by the customer. • Problems or damage resulting from repairs or
modifications not performed by Yokogawa or
(8) Product Disposal someone authorized by Yokogawa.
The instrument should be disposed of in
accordance with local and national legislation/ • Problems or damage resulting from
regulations. inappropriate reinstallation after delivery.
(9) Authorized Representative in EEA • Problems or damage resulting from disasters
In relation to the CE Marking, The authorized such as fires, earthquakes, storms, floods, or
representative for this product in the EEA lightning strikes and external causes.
(European Economic Area) is:
Yokogawa Europe B.V. ■ Trademarks:
Euroweg 2, 3825 HD Amersfoort, • ‘digitalYEWFLO’, ‘DY’, ‘DYA’, ‘DYC’, and
The Netherlands ‘BRAIN TERMINAL’ are registered trademarks
of Yokogawa Electric Corporation. Company
names and product names used in this material
are registered trademarks or trademarks of their
respective owners.
• In this manual, trademarks or registered
trademarks are not marked with ™ or ®.
IM 01F06A01-01EN
<1. INTRODUCTION> 6
1.3 ATEX Documentation
This is only applicable to the countries in European Union.
GB SK
CZ
DK
I LT
E LV
EST
NL
PL
SF
SLO
P
H
F
BG
D
RO
S
M
GR
IM 01F06A01-01EN
<2. HANDLING PRECAUTIONS> 7
2. HANDLING PRECAUTIONS
The digitalYEWFLO Series Vortex Flowmeter are 2.2 Transportation and Storage 2
thoroughly tested at the factory before shipment. Precautions
When these instruments are delivered, perform a HANDLING PRECAUTIONS
visual check to ascertain that no damage occurred If the instrument is to be stored for a long period of
during shipment. time after delivery, observe the following points.
This section describes important cautions in (1) The instrument should be stored in its original
handling these instruments. Read carefully before
using them. packing condition in the storage location.
If you have any problems or questions, contact (2) Select a storage location that fulfils the following
your nearest YOKOGAWA service center or sales
representative. conditions:
• A place where it will not be exposed to rain or
2.1 Checking Model and
Specifications water
• A place subject to minimal vibrations or shocks
The model code and specifications are found on • Temperature and humidity levels should be as
the name plate located on the outside of the case.
Check that the model code and specifications follows:
match what you have ordered. Temperature:-40 to +80°C
Be sure you have your model number and serial Humidity:5 to 100% RH (no condensation)
number available when contacting Yokogawa. The preferred ambient temperature and
humidity levels are +25°C and approximately
3UA 65% RH.
*1) (3) If the digitalYEWFLO vortex flowmeter is
transferred to the installation site and stored
without being installed, its performance may
be impaired due to the infiltration of rainwater
and so forth. Be sure to install and wire the
digitalYEWFLO vortex flowmeter as soon as
possible after transferring it to the installation
location.
(4) The vortex flowmeter is a heavy instrument. Be
careful that no damage is caused to personnel
through accidentally dropping it, or by exerting
excessive force on the vortex flowmeter. When
moving the vortex flowmeter, always use a
trolley and have at least two people carry it.
*2)
F0201.ai
Figure 2.1(a) Example of Name Plate for Integral Type
*1)
*2)
*1)
*2)
F0202.ai
Figure 2.1(b) Example of Name Plate for Remote Type
*1): K factor at + 15°C
*2): The product - producing country.
IM 01F06A01-01EN
<3. INSTALLATION> 8
3. INSTALLATION (4) Precautions Regarding Piping
WARNING (a) Ensure that the process connector bolts are
tightened firmly.
This instrument must be installed by expert
engineer or skilled personnel. The procedures (b) Ensure that no leak exists in the process
described in this chapter are not permitted for connection pipeline.
operators.
(c) Do not apply a pressure higher than the
3.1 Installation Precautions specified maximum working pressure.
(1) Ambient Temperature (d) Do not loosen or tighten the flange mounting
Avoid an area which has wide temperature bolts when the assembly is pressurized.
variations. When the installation area is
subjected to heat radiation from process plant, (e) Handle the vortex flowmeter carefully when
ensure adequate heat prevention or ventilation. measuring dangerous liquids, so that the liquids
do not splash into eyes or on face. When using
(2) Atmospheric Conditions dangerous gases, be careful not to inhale them.
Avoid installing the vortex flowmeter in a
corrosive atmosphere. When the vortex (5) Other Considerations
flowmeter must be installed in a corrosive
atmosphere, adequate ventilation must be • Choose a location where is sufficient clearance
provided around digitalYEWFLO exist to allow such work
as routine inspections.
(3) Mechanical Shock or Vibration
The vortex flowmeter is of sturdy construction, • Choose a location that ensures easy wiring and
but select an area subject to minimize piping.
mechanical vibration or impact shock. If
the flowmeter is subject to vibrations, it is 3.2 Piping Precautions
recommended that pipeline supports to be
provided as shown in Figure 3.1. Straight Pipe Length and
Recommendations
digitalYEWFLO
Vortex Flowmeter Read Table 3.1 about Valve Position and Straight
Pipe Length and so on.
Pipeline
● Piping support
Typical vibration immunity level is 1G for normal
piping condition.Piping support should be fixed in
case of over 1G vibration level.
● Installation direction
If a pipe is always filled with liquids, the pipe can be
installed vertically or at inclined angle.
● Adjacent pipes
The process pipline inner diameter should be larger
than the digitalYEWFLO inner diameter.
Use the following adjacent pipe.
Pipeline Support Model Code Adjacent Pipe
F0301.ai DY015 up to DY050 Sch40
DY025/R1 up to DY080/R1 or larger inner
Figure 3.1 Example of Pipeline Support DY040/R2 up to DY100/R2 diameter than
DY080 up to DY400 Sch40
DY100/R1 up to DY200/R1
DY150/R2 up to DY200/R2 Sch80
or larger inner
diameter than
Sch80
IM 01F06A01-01EN
<3. INSTALLATION> 9
Table 3.1 (a) Straight pipe length and recommendations (1)
D: Nominal diameter (mm)
Description Figure
Reducer pipe: digitalYEWFLO
Ensure the upstream straight pipe length to be 5D or more, and the
downstream straight pipe length to be 5D or more for per reducer Flow
pipe.
Upstream Downstream
Reducer 5D or more 5D or more
Expander pipe: digitalYEWFLO
Ensure the upstream straight pipe length to be 10D or more, and
the downstream straight pipe length to be 5D or more for per Flow Upstream Downstream
expander pipe. Expander
10D or more
Bent pipe and straight pipe length: 1. Flow 5D or more
1. Single bent pipe digitalYEWFLO
Upstream Downstream
10D or more 5D or more
Flow digitalYEWFLO
Downstream
2. Double bent pipe; coplanar 2. Upstream 3
10D or more 5D or more INSTALLATION
Flow digitalYEWFLO
Downstream
3. Double bent pipe; non coplanar 3. Upstream
20D or more 5D or more
Valve position and straight pipe length: digitalYEWFLO
Install the valve on the downstream side of the flowmeter.
Read each element above for
The upstream straight pipe length dependent on the element straight pipe run.
located on the upstream such as reducer/expander, bent and
etc., read description as above. Keep 5D or more for downstream Flow Valve digitalYEWFLO
straight pipe length.
Upstream Downstream
In case the valve has to be installed on the upstream of the
flowmeter, ensure the upstream straight pipe length to be 20D or
more, and the downstream straight pipe length be 5D or more.
20D or more 5D or more
IM 01F06A01-01EN
<3. INSTALLATION> 10
Table 3.1 (b) Straight pipe length and recommendations (2) Figure
D: Nominal diameter (mm) digitalYEWFLO
Description digitalYEWFLO
Fluid vibration: digitalYEWFLO
For a gas line which uses a position-type or roots-type blower
compressor or a high-pressure liquid line (about 1MPa or more)
which uses piston-type or plunger-type pump, fluid vibrations may
be produced.
In these case, install valve on the upstream side of digitalYEWFLO.
For inevitable fluid vibration, put a vibration damping device such
as throttling plate or expansion section in the upstream side of
digitalYEWFLO.
Piston-type or plunger pump:
Install the accumulator on the upstream side of digitalYEWFLO to
reduce fluid vibrations.
Valve positon (T-type piping exist): Relocating digitalYEWFLO
When pulsation causes by a T-type piping exist, install the valve on
the upstream of the flowmeter. Flow Valve (Off)
Example: As shown in the figure, when the valve V1 is turned off, B
the fluid flow throught B as to meter A the flow is zero. But due to
the pulsating pressure is detected, the meter is zero point become V1’ V1
fluctuating. To avoid this, change the valve V1 location to V1'. A
Note: In case of the Reduced Bore Type, moisture may be
remained upstream of the flowmeter. Drain it appropriately.
Pressure and Temperature Taps: Pressure tap
When the temperature/pressure correction, place a pressure tap in
a position on the downstream side 2 to 7D from digitalYEWFLO. digitalYEWFLO Temperature tap
Then place a temperature tap in a position on the downstream side
1 to 2D from a pressure tap. Upstream
When use a temperature tap only, place it in a position on the
downstream side 3 to 9D from digitalYEWFLO. Flow
Downstream
2 to 7D 1 to 2D
Mounting Gasket: digitalYEWFLO
Avoid mounting gaskets which protrude into the pipe line. This may
cause inaccurate readings. Pipeline Flange
Use the gaskets with bolt holes, even if digitalYEWFLO is the wafer Pipeline
type.
When using a spiral gasket (without bolt holes), confirm the size
with the gasket -manufacturer, as standard items may not be used
for certain flange ratings.
No good
IM 01F06A01-01EN
<3. INSTALLATION> 11
Table 3.1 (c) Straight pipe length and recommendations (3)
Description digitalYEWFLO Figure
digitalYEWFLO
Heat-Insulation:
When an integral-type flowmeter or a remote type detector is Bracket Nozzle
installed and the pipe carrying higt-temperature fluids is heat- Heat-Insulator Heat-Insulator
insulated, do not wrap adiabatic materials around the installation
the bracket (DY015 to DY100) or the nozzle (DY150 to DY400) of
the converter.
Note: Read Section 3.4 "Cryogenic and High Process Temperature
Version Insulation" and install it rightly.
[DY015 to DY100] [DY150 to DY400]
digitalYEWFLO
Flushing of the pipe line:
Flush and clean scale, incrustation and sludge on the inside of Short pipe
pipe for newly installed pipe line and repaired pipe line before the
operation. For flushing, the flow should flow through bypass-piping
to avoid damaging the flowmeter. If there is no bypass-piping,
install short pipe instead of the flowmeter.
Mounting Precautions (2) Liquid Measurement Precautions 3
To insure accurate measurement, the
WARNING digitalYEWFLO must always have a full pipe. INSTALLATION
In case of high process temperature, care • Piping Requirements for Proper Operation
should be taken not to burn yourself because Allow the flow to flow against gravity. When
the surface of body and case reach a high the flow is moving with gravity, lift the down-
temperature. stream pipe length above the digitalYEWFLO
installation level to maintain full pipeline.
(1) Gas or Steam Measuring Precautions
• Piping to Prevent Standing Liquid Flow
Mount digitalYEWFLO in a vertical pipeline
to avoid liquid traps. When digitalYEWFLO (No Good) (No Good)
is installed horizontally, raise that part of
the pipeline in which the digitalYEWFLO is (Good) h h>0 Flow
installed. Flow (Good)
Flow
(Good)
Flow h
h>0
(Good)
Flow F0303.ai
(No Good)
Flow
F0302.ai
IM 01F06A01-01EN
<3. INSTALLATION> 12
• Piping for Avoiding Bubbles (4) Pipeline Diameter and digitalYEWFLO
Flows containing both gas and liquid cause
problems. Avoid gas bubbles in a liquid flow. The process pipeline inner diameter should be
Piping should be carried out to avoid bubble slightly larger than the vortex flowmeter inner
generation. diameter, schedule 40 or lower pipe should be
Install the valve on the downstream side of the used for 1/2 to 2 inch flowmeters and schedule
flowmeter because pressure drop across the 80 or lower pipes for 3 to 16 inch flowmeters.
control valve may cause gas to come out of the
solution. (No Good) (Good)
(Good) Control (No Good)
Value
D1 D2 D1 D2
Flow D1 < D2 D1 ≥ D2
(Good)
F0306.ai
(5) Waterproof Construction
The vortex flowmeter is of IP67, Type 4X, JIS C
0920 watertight protection. However, it cannot
be used under water.
Flow
Flow 3.3 Maintenance of Piping
(No Good) (1) Pipe cleaning
F0304.ai • Flushing of pipe line (Cleaning)
Flush and clean scale, incrustation and sludge
(3) Multi-Phase Flow on the inside of pipe wall for newly installed pipe
digitalYEWFLO can measure gas, liquid line and repaired pipe line before the operation.
and steam when there is no change in state.
However, accurate measurement of mixed • Fluid Carrying Solids
flows (e.g. gas and liquid) is not possible. Do not measure fluids that carry solids
(e.g. sand and pebbles). Make sure users
(No Good) periodically remove solids adhering to the
vortex shedder.
• Obstruction of flow fluids may cause to make
a chemical reaction and the fluid will be
crystallized and hardened, and be deposited on
the pipe wall and shedder bar.
In those cases, clean shedder bar.
Mist flow (2) Bypass piping
(No Good)
Bypass piping is convenient for the
maintenance of digitalYEWFLO (vortex
shedder cleaning, etc.).
Liquid Bypass shut-off valve
Flow
Stratified flow digitalYEWFLO
(No Good) Gas Flow
Flow
Bubble flow F0305.ai
Upstream shut-off valve Downstream shut-off valve
F0307.ai
IM 01F06A01-01EN
<3. INSTALLATION> 13
3.4 Cryogenic and High Process CAUTION
Temperature Version
Insulation Keep the upper limit of heat insulating material to
prevent overheating of the terminal box.
When you are using Cryogenic and High Process Seal the Heat-Insulator to avoid hot-air leakage.
Temperature version of digitalYEWFLO Vortex
Flowmeter (Option code: /HT, /LT), read following 50mm min. 50mm min.
contents.
UPPER LIMIT OF UPPER LIMIT OF
Installing Cryogenic Version Heat-Insulator Heat-Insulator
For cryogenic applications, use stainless steel Nominal Size: 100mm or under
mounting bolts and nuts to install the flowmeter.
These can be ordered separately from Nominal Size: 150mm or over
YOKOGAWA. Cover the flowmeter body with
heat insulating material so that the flowmeter F0309.ai
can be maintained at ultra-low temperatures.
Maintenance for High Process 3
Maintenance for Cryogenic Applications Temperature Applications
INSTALLATION
Option code: /LT uses special materials Option code: /HT uses special materials that
that produce vortex flowmeter for cryogenic produce vortex flowmeter for High Process
applications. When you are replacing a shedder Temperature applications When you are
bar, specify Cryogenic Version shedder bar. To replacing a shedder bar or a gasket, specify
avoid condensing in the terminal box, ensure High Process Temperature Version.
that the wire connecting port is well sealed.
3.5 Mounting Procedures
Bracket
WARNING
Cold insulating material
The Vortex Flowmeter is a heavy instrument.
F0308.ai Please be careful to prevent persons from
injuring whin it is handled.
Installing High Process Temperature
Version Before installing the instrument verify the following.
The direction of flow should match to the arrow
Installation of the flowmeter is the same as the mark on the instrument body. When changing the
standard type. Cover the flowmeter body with orientation of the terminal box, read
heat insulating material following instruction of IM 01F06A00-01EN Chapter 11 “MAINTENANCE.”
“CAUTION”. 1. Installation of Vortex flowmeter of the wafer and
flange type is shown in Table 3.3.
When installing the wafer type vortex flowmeter,
it is important to align the instrument bore with
the inner diameter of the adjacent piping.
To establish alignment, use the four collars
supplied with the instrument.
IM 01F06A01-01EN
<3. INSTALLATION> 14
• Four collars are supplied for 1/2 inch (15mm) to Table 3.2 Flange Rating
1- 1/2inch (40mm), 2 inch of JIS 10K or ANSI
class 150, and 3 inch of ANSI class 150. Install Size Flange Rating Major Diameter of
the instrument as illustrated in Table 3.3. mm External Threed Length
(inch)
• If the adjacent flanges have eight bolt holes, of Stud Bolt d (mm)
insert the stud bolts in the holes on the (mm)
instrument shoulder.
15mm JIS 10K, 20K/DIN 10,
• Stainless steel stud bolts and nuts are available
on order. When they are to be supplied by the (1/2B) 16,25,40 12 160
user, read Table 3.2 for stud bolt length. Gaskets
must be supplied by the user. JIS 40K 16 160
Pipeline Flange ANSI 150, 300, 600 12.7 155
Pipeline
25mm JIS 10K, 20K, 40K 16 160
F0310.ai (1B) ANSI 150 12.7 155
ANSI 300, 600 15.9 160
2. Avoid mounting gaskets which protrude into the DIN 10, 16, 25, 40 12 160
pipeline. This may cause inaccurate readings.
Use gaskets with bolt holes, even if 40mm JIS 10K, 20K/DIN 10,
digitalYEWFLO is of the wafer type.
When using a spiral gasket (without bolt holes), (1-1/2B) 16, 25, 40 16 160
confirm the size with the gasket-manufacturer,
as standard items may not be used for certain JIS 40K 20 170
flange ratings.
ANSI 150 12.7 155
ANSI 300, 600 19.1 170
50mm JIS 10K, 20K, 40K/ DIN 16 200
(2B) 10, 16, 25, 40 ANSI 15.9 200
150, 300, 600
80mm JIS 10K/DIN 10, 16, 16 220
(3B) 25, 40 20 240
JIS 20K, 40K 15.9 240
ANSI 150 19.1 240
ANSI 300, 600
100mm JIS 10K/DIN 10, 16 16 220
(4B) JIS 20K/DIN 25, 40 20 240
JIS 40K 22 270
ANSI 150 15.9 240
ANSI 300 19.1 240
ANSI 600 22.2 270
Length
d
Collar Stud Bolt
F0311.ai
IM 01F06A01-01EN
<3. INSTALLATION> 15
Table 3.3 (a) Installation of Wafer Type Vortex Flowmeter
Wafer type Description
When Installation Collar are required, the Horizontal Installation
installation vortex flowmeters applied to the Electrical
following line sizes and flange ratings. Connection
Flange
Size mm (inch) Flange Rating Flow
Direction
15 to 40 All ratings Flange
(1/2 to 1-1/2) Nut
JIS 10K, ANSI class 150, Gasket Bolt (4 pcs.)
DIN PN10 to PN40
50(2)
80(3) ANSI class 150 Collar (4 pcs.)
Gasket
Nut
WARNING Vertical Installation
The inside diameter of the gasket must Nut
be larger than the pipe inner diameter Gasket
so that it will not disturb the flow in the
pipeline. Flange
Collar (4 pcs.) 3
WARNING Gasket Electrical INSTALLATION
Connection
When installing the Flowmeter vertically in the Flange
open air, change the electrical connection port
direction to the ground. If the electrical Bolt (4 pcs.)
connection port is installed upwards, rain Nut
water might leak in.
WARNING Flow Direction
In case of vertical installation, two collars in (1) Insert two collars on each two bolts of bottom side of the flowmeter.
the upper part might move after the (2) Fit the flowmeter body to the collars. And tighten the four bolts and nuts
installation. But it doesn't influence the
performance, please use the flowmeter under uniformly.
such condition. (3) Check for leakage from the flange connections.
Horizontal Installation Vertical Installation
When Installation Collars are not required,the Flow Electrical Connection
installation vortex flowmeters applied to the
following line sizes and flanges. Direction
Size mm (inch) Flange Rating Nut Bolt Hole
50(2) Flange
80(3) JIS 20K, 40K Stud Bolt (8 pcs.)
100(4) ANSI class 300,600 Flange
Gasket
JIS 10K, 20K, 40K
ANSI class 300, 600
JIS 10K, 20, 40K
ANSI class 150, 300, 600
Gasket
Nut
(1) Insert two stud bolts in the bolt holes Electrical
on the flowmeter shoulder to align Connection
the instrument body with the inner
diameter of the adjacent piping. Flow Direction
(2) Tighten all bolts uniformly and check F0312.ai
that there is no leakage between the IM 01F06A01-01EN
instrument and the flanges.
<3. INSTALLATION> 16
Table 3.3 (b) Installation of Flange Type Vortex Flowmeter Description
Flange type Horizontal Installation
Use the stud bolts and nuts supplied with the Flow Direction
flowmeter of the user.
The gaskets should be supplied by the user. Nut Flange
Flange
CAUTION Stud Bolt
Gasket
The inside diameter of the gasket must be Gasket
larger than the pipe inner diameter so that it Nut
will not disturb the flow in the pipeline.
Flow Direction
Vertical Installation
F0313.ai
Table 3.3 (c) Installation of Remote Type Converter Description
DYA remote type converter
CAUTION The converter is mounted on a 2-inch (60.5mm outer dia.) stanchion or horizontal
pipe.
DYC remote type signal cable is used between Do not mount the converter on a vertical pipe. It makes wiring and maintenance
the remote type flowmeter and the converter. difficult.
The maximum signal cable length is 97.5ft The converter mounting orientation can be changed as illustrated below.
(30m).
Stanchion Mounting Horizontal Pipe Mounting
Nut U-Bolt
Bracket
2-inch Pipe F0314.ai
IM 01F06A01-01EN
<4. WIRING> 17
4. WIRING 4.1 Load Resistance of Output 4
Condition
IMPORTANT WIRING
Be sure to observe the following precautions when
For the descriptions of wiring for the Fieldbus wiring:
Communication Type, read Chapter 11
“COMMUNICATION (FIELDBUS)”. CAUTION
WARNING • When the ambient temperature of the wire
exceeds +60°C, use heat-resistant insulated
The wiring of the vortex flowmeter must wire with a maximum allowable temperature
be performed by expert engineer or skilled more than ambient temperature +30°C or
personnel. No operator shall be permitted to above.
perform procedures relating to wiring.
• Do not connect cables outdoors in wet
CAUTION weather in order to prevent damage from
condensation and to protect the insulation.
Once all wiring is complete, check the
connections before applying power to the • Do not splice the cable between the flowtube
instrument. Improper arrangements or wiring terminal and the converter if it is too short.
may cause a unit malfunction or damage. Replace the short cable with a cable that is
the appropriate length.
• All the cable ends must be provided with
round crimp-on terminals and be securely
wired.
• Be sure to turn power off before opening the
cover.
• Before turning the power on, tighten the
cover securely.
• Explosion protected types must be wired in
accordance with specific requirement (and,
in certain countries, legal regulations) in
order to preserve the effectiveness of their
explosion protected features.
• The terminal box cover is locked by the
Locking Screw. In case of opening the
terminal box cover, use the hexagonal
wrench attached.
• Be sure to lock the cover by the Locking
Screw using the hexagonal wrench attached
after installing the cover.
Table 4.1 shows the connection method of several
output conditions.
(1) Analog Output (4 to 20 mA DC)
This converter uses the same two wires for
both, the signal and power supply. A DC power
supply is required in a transmission loop.
The total leadwire resistance including the
instrument load and power distributor (supplied
by the user) must conform to a value in the
permissible load resistance range. Read Figure
4.1.
IM 01F06A01-01EN
<4. WIRING> 18
600 4.2 Selection of Wires
Load resistance R (Ω) R= E–10.5 Communication The following should be taken into consideration
0.0236 Applicable range when selecting cables for use between the
BRAIN and HART converter and distributor.
(1) Use 600V PVC insulated wire or equivalent
250
standard wire or cable.
10.5 16.4 24.7 30 42 (2) Use shielded wire in areas susceptible to
Power Supply Voltage E (V) F0401.ai electrical noise (both analog and pulse output
versions).
Figure 4.1 Relationship between Power Supply (3) In areas with high or low ambient temperatures,
Voltage and Load Resistance (4 to 20 use wires or cables suitable for such
mA DC Output) temperatures.
(4) In atmospheres where oils or solvents,
(2) Pulse output and Alarm, Status Output corrosive gases or liquids may be present, use
suitable wires or cables.
This version uses three wires between the (5) Use cable which withstand temperature up to
converter and the power supply. A DC power +60°C and more, when ambient temperature is
and load resistance are required, and pulse more than +60°C.
output is connected to a totalizer or an electric (6) The outer diameter of the screw for grounding
counter. Low level of the pulse output is 0 terminal and the cable terminal is 4mm.
to 2V. No communication is possible over (7) Recommend a crimping terminal with an
a transmission line. Communication via the insulating sleeve (for 4mm screw).
amplifier board is always possible irrespective
of the wiring condition. IMPORTANT
(3) Simultaneous Analog-Pulse Output For the remote type, use DYC remote type signal
cable to connect DYA remote type converter and
When using digitalYEWFLO in the the remote type detector (DY-N).
simultaneous analog -pulse output mode, the
communicable distance of the transmission 4.3 Connection
line is restricted on the wiring method. Table
4.1 shows the examples of connection for this Table 4.1 shows the connection sample of
output mode. Communication via the amplifier connection for power supply and load resistance.
board is always possible irrespective of the The terminal position of each connection is shown
wiring condition. in Figure 4.2.
IMPORTANT Integral type Remote type
For pulse output and the simultaneous analog-
pulse output ,use the load resistance. Read
Table 4.1.
Supply 4 to 20 mA DC Output Power Supply
and Output Signal Terminals
+
–
Pulse Pulse Output Terminal
+
Grounding Terminal
F0402.ai
Figure 4.2 Terminal Position
IM 01F06A01-01EN
<4. WIRING> 19
Table 4.1 (a) The wiring example for the analog and pulse and status, alarm output.
Connection Description
Analog Output digitalYEWFLO Distributor
Electrical Terminal
In this case, ＋ 24V DC
Communication is SUPPLY ＋
possible (up to a − 250Ω
distance of 2km when a −
CEV cable is used.) PULSE ＋
Pulse Output digitalYEWFLO Use the Three-wire Power Supply *4
Electrical Terminal shielded cable.
In this case, No ＋
communication is Shielded Cable
possible. Ｅ
SUPPLY＋ −
− −
PULSE＋ Electric*1
R*2 counter
＋
Status Output digitalYEWFLO Use the Three-wire E
Alarm Output Electrical Terminal shielded cable.
In this case, No Shielded Cable
communication is
possible. SUPPLY ＋
−
Flyback Magnetic 4
PULSE ＋ diode valve
External Power supply Relay AC power supply WIRING
30V DC, 120mA max*5
(Contact Rating)
*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.
*4: This flowmeter requires a power supply of greater than or equal to the maximum output current E (V) / R (kΩ) + 25mA.
*5: 80mA max when you select Option code /KS2, /SS2.
IM 01F06A01-01EN
<4. WIRING> 20
Table 4.1 (b) The wiring example for the simultaneous analog and pulse output, the calculation formula of the
range of load registance R for the pulse output.
Connection Description
Simultaneous digitalYEWFLO Distributor
Analog Electrical Terminal (or communication medium)
-Pulse Output *6 Shielded Cable (AXFC-0) *7 ＋ 24V DC
250Ω
Example 1 SUPPLY ＋
In this case, − −
Communication is
possible(up to a distance PULSE ＋ R*2 E*3
of 2km when a AXFC-0 ＋
cable*7 is used). P
−
Electric counter *1
(or communication medium)
Example 2 digitalYEWFLO 250Ω − Recorder or
In this case, Electrical Terminal R*2 ＋ other instrument
Communication is
possible (up to a Shielded Cable (AXFC-0) *7 ＋ E*4
distance of 200m when a
AXFC-0 cable*7 is used) SUPPLY ＋ P
and R = 1kΩ). − −
PULSE ＋
Electric counter *1
(or communication medium)
Example 3 digitalYEWFLO 250Ω − Recorder or
In this case, No Electrical Terminal R*2 ＋ other instrument
communication is
possible (when shielded SUPPLY ＋ ＋ E*4
cable is not used). −
P
PULSE ＋ −
Electric counter *1
(or communication medium)
The range of load The load resistance should be selected by calculation as shown below.
resistance R*2 for the
pulse output. E (V) ≦ R (kΩ) ≦ 0.1 … (1) Example of CEV cable capacitance 0.1µF/km
120 (mA)*5 (μF) × f
C (kHz) Where
E : Supply voltage (V)
E2 (V) f : Frequency of pulse output (kHz) C : Cable capacitance (µF)
P (mW) ＝ R (kΩ) ……………………………… (2) R : Value of load resistance (kΩ) P : Power ratio of the load
resistance (mW)
*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: This flowmeter requires a power supply of greater than or equal to the maximum output current E (V) / R (kΩ).
*4: This flowmeter requires a power supply of greater than or equal to the maximum output current E (V) / R (kΩ) + 25mA.
*5: 80mA max when you select Option code /KS2, /SS2.
*6: When using analog and pulse output simultaneously, the HART communication may be influenced by noise comparing analog output
only.
*7: AXFC-0 is the dedicated signal cable (without cable end finish) for Yokogawa Magnetic Flowmeter ADMAG AXF series.
Read Figure 4.3 for AXF-0.
Other shield cable which is equivalent architecture to AXFC-0 can be used for DY. However the material of insulator may decrease the
communication distance.
Conductors (A and B)
Shields (SA and SB)
Tape
Outer jacket ø8 to 12 (ø0.31 to 0.47)
Figure 4.3 Shield (C)
Insulation
Insulation (Material : Polyethylene)
AXFC-0 (Read IM 01E20C01-01E)
IM 01F06A01-01EN
<4. WIRING> 21
4.4 Connection of DYC Remote T T
Type Signal Cable A
A B
DYC remote type signal cable is shown in Figure B
4.4 and Figure 4.5, and the terminal is shown in C
Figure 4.6. C
The maximum cable length is 30 m (97.5 feet). DYA Remote Type Converter
Remove terminal box cover and wiring connection Remote Type Detector(DY-N)
dust-cap before wiring. T: Only for /MV
For remote type converter has two electrical DYC
connections (cable inlets). Use the left connection
as viewed from the terminal box for the DYC remote C
type signal cable and the right connection for the
transmission cable. B Input Terminal from built-
If a signal cable kit is supplied by YOKOGAWA, T T in temperature sensor
both ends of the cable must be finished in
accordance with the following instructions. Read A Input Terminals from
Section 4.5 “End Processing Method of DYC A B vortex detector
Remote Type Signal Cable“. Remote Type Detector (DY-N.../E1) C Common Terminal
F0405.ai
Figure 4.6 Terminal of Detector and Converter
DYC Remote Type Signal Cable DYA Remote Type Converter
CAUTION Shield Cover 4 WIRING
• After completing the signal cable Figure 4.7 Shielded Cover Power Cable
connections, install the shielded cover to
signal cable terminal as shown in Figure 4.7. F0406.ai
• To comply with EMC Directive, DYC remote
type signal cable shall be in metal conduit
piping connection.
CB A T Unit : mm
(Black) (White) (Red) (Yellow)
T ABC
(Yellow) (Red) (White) (Black)
80 70 70 80
60 60 95 (Blue)
50
50
20 25
Flowmeter
Converter
Specified
Length (L)
30m (max.)
DYC F0403.ai
T: Only for / MV
Figure 4.4
DYC Remote Type Signal Cable
Outer shield
To Flowmeter Inner shield To Converter
(Yellow) T T (Yellow)
A (Red)
(Red) A B (White)
(White) B C (Black)
(Bule)
(Black) C
T: Only for / MV F0404.ai
Figure 4.5 Construction of DYC Remote Type
Signal Cable
IM 01F06A01-01EN
<4. WIRING> 22
4.5 End Processing Method of DYC Remote Type Signal Cable
4.5.1 For Remote Type Vortex Flowmeter (DY-N) Figure Unit : mm
5 (0.2) 10 (0.4) (approx. inches)
1 Description
Strip off the outer polyethylene jacket, outer braided 5 (0.2)
shield and inner jacket, and inner braided shield as 90 (3.5)
per the dimensions below. Conductive Layer (Black)
T*1 (Yellow)
2 Strip off the black conductive layer convering two
wires completely, as per the dimensions below. 40 (1.6)5 (0.2)
Twist each of the conductor and drain wires so that T*1 (Yellow) 3 (0.1)
there are no free strands.
A (Red) or less
3 Do not short-circuit the conductive layer and the
terminals (A, B, C and T*1). 50 (2.0) Conductive Layer (Black)
60 (2.4)
4 Strip off about 5 mm (0.2 in.) of insulation for each
of wires A, B, and T*1, and twist the strands of each B (White)
wire. Twist the inner and outer drain wires together.
Drain wires
C (Black) T*1 (Yellow)
A (Red)
B (White) 5 (0.2)
5 (0.2) 5 (0.2)
5 Slide FEP (fluorinated ethylene propylene) tubing 5 (0.2) FEP Insulation Tubing
over the twisted inner and outer drain wires C until C (Black) (Black)
the tubing cannot be slid any further, and then cut
off the tubing leaving 5 mm (0.2 in.) of the stranded C(Black) T*1 (Yellow)
drain wires exposed. A (Red)
B (White)
6 Slide heat shrinkable tubing over the cable end so Heat Shrinkable Tubing
that the tubing covers the braided shield and
overlaps both the polyethylene jacket and loose Lug tip T*1 (Yellow)
wires A, B, C, and T*1. A (Red)
B (White)
7 Slide a short piece of heat shrinkable tubing over
each of wires A, B, C, and T*1. Install a crimp-on Crimp and Solder Here
terminal lug at the tip of each wire. Crimp and Heat Shrinkable Tubing
solder each lug.
10
8 Slide each short piece of heat shrinkable tubing
over the crimp sleeve. Heat all pieces of heat
shrinkable tubing with a heat blower or dryer.
Heat Shrinkable Tubing
9 Attach an identification label to the end of the cable.
NOTE
Check that the insulation resistance between each
wire including the inner shield is 10M or greater at
500V DC. Ensure that both ends of the wires are
disconnected (open-circuited) during the check.
(*1): Only for /MV F0407.ai
80 (3.15) 20 (0.79) Unit : mm NOTE CAUTION
Black (C) (approx. inches)
In case that the cable end finish Do not touch the '' conductive layer"
White (B) F0408.ai parts assembly is necessary (black area covering the signal cables A
after delivery, contact your and B) to the converter case, terminal,
Red (A) nearest Yokogawa sales office and other leadwires. If it is touched,
or the sales representative operation of the converter may be
Yellow*1(T) 50 (1.97) from which you purchased the incorrect. When the cable is terminated,
60 (2.36) product. remove the conductive layer properly.
70 (2.76)
Figure 4.8 End Processing Method of DYC Remote Type Signal Cable for Detector
IM 01F06A01-01EN
<4. WIRING> 23
4.5.2 For DYA Remote Type Converter Figure Unit : mm
15 (0.6) 10 (0.4) (approx. inches)
1 Description
Strip off the outer polyethylene jacket, outer braided
shield and inner jacket, and inner braided shield as
per the dimensions as shown.
95 5 (0.2)
(3.7)
Conductive T*1 (Yellow)
Layer (Black)
2 Cut of the black conductive layers(convering the B (White) 3 (0.1) or less Conductive
two wires) completely, as per the dimensions below. A (Red) 40 (1.6) 5 (0.2) Layer (Black)
Twist each of the conductor and drain wires so that T*1 (Yellow) 50 (2.0)
there are no free strands.
60 (2.4)
3 Do not short-circuit the conductive layer and the
terminals (A, B, C, G, and T*1). 5 (0.2)
4 Strip off about 5 mm (0.2 in.) of insulation for each G 5 (0.2) Drain wires
of wires A, B, and T*1, and twist the strands of each C
wire.
5 (0.2) T*1 (Yellow)
5 Slide black FEP (fluorinated ethylene propylene) A (Red)
tubing over the inner shield drain wire C and blue B (White)
FEP tubing over outer shield drain wire G until
the tubing cannot be slid any further, and then cut 5 (0.2) FEP Insulation Tubing (Black)
off the tubing leaving 5 mm (0.2 in.) of the drain FEP Insulation Tubing (Blue)
wires exposed. G
C (Black)
6 Slide heat shrinkable tubing over the cable end so
that the tubing covers the braided shield and 5 (0.2) T*1 (Yellow) 4
overlaps both the polyethylene jacket and loose A (Red)
wires A, B, C, G, and T*1. G B (White)
C (Black) A (Red)T
7 Slide a short piece of heat shrinkable tubing over 25 (1.0)
each of wires A, B, C, G, and T*1. Install a crimp-on B (White)
terminal lug at the tip of each wire. Crimp and 15 (0.6)
solder each lug.
Lug-Tips Heat Shrinkable Tubing WIRING
8 Slide each short piece of heat Crimp and Solder Heat-shrinkable tubing
shrinkable tubing over the crimp sleeve. Heat all
pieces of heat shrinkable tubing with a heat blower 10
or dryer. (0.4)
9 Attach an identification label to the end of the cable. Heat Shrinkable Tubing
NOTE F0409.ai
Check that the insulation resistance between each
wire including the inner shield is 10M or greater at
500V DC. Ensure that both ends of the wires are
disconnected (open-circuited) during the check.
(*1): Only for /MV
95 (3.74) Unit : mm NOTE CAUTION
Blue (G) (approx. inches)
In case that the cable end Do not touch the '' conductive layer"
Black (C) F0410.ai finish parts assembly is (black area covering the signal cables
necessary after delivery, A and B) to the converter case,
White (B) contact your nearest terminal, and other leadwires. If it is
Yokogawa sales office or the touched, operation of the converter
Red (A) 3 sales representative from may be incorrect. When the cable is
MAX which you purchased the terminated, remove the conductive
product. layer properly.
Yellow*1(T) 50 (1.97)
60 (2.36) 25 (0.98)
70 (2.76)
80 (3.15)
Figure 4.9 End Processing Method of DYC Remote Type Signal Cable for Converter
IM 01F06A01-01EN
<4. WIRING> 24
4.6 Wiring Procedures and Terminal Box
Precautions
Steel Conduit for
NOTE Flameproof
Converter
Once all wiring is complete, check the
connections before applying power to the Flexible Metal Conduit
instrument. Improper arrangements or wiring Tee
may cause a unit malfunction or damage.
Drain Fitting F0412.ai
(1) Lay wiring as far as possible from electrical
noise sources such as large capacity Figure 4.11 Example of Wiring (DYA Remote Type
transformers, motors, and power supplies. Converter)
(2) Remove the terminal cover and dustproof plug Wrench B. Coupling
of an electrical connection before wiring. When Lock Nut Clamp Nut
you open the cover of explosion protected Clamp Ring
type (*), turn the Locking Screw to the right, and Cable
unlock. When you close a cover after wiring, be Packing Gland
sure to turn the Locking Screw to the left and Washer
lock.
(*) Flameproof (TIIS, ATEX, IECEx) Packing
(3) It recommends using an flexible metal conduit Union Nut Wrench
and a duct for waterproofing or external Lock Nut
protection of an electric wire. Read Figure 4.10
and Figure 4.11. Packing Case
(4) The flameproof packing adapter (option Adapter Body O-Ring
code: /G11 or /G12) should be used for
the external wiring of TIIS Flameproof. Apply a nonhardnening
Read “INSTALLATION AND OPERATING sealant to the threads
PRECAUTIONS FOR TIIS FLAMEPROOF for watweproofing
EQUIPMENT.”
Terminal Box
F0413.ai
Figure 4.12 Cable Wiring
Steel Conduit NOTE
Flameproof
Converter Be sure to use the flameproof packing adapter
(option code: /G11 or /G12) for TIIS flameproof
Tee type at the time of cable wiring work. Read
Flexible Metal Conduit Figure 4.13.
Drain Fitting Table 4.2 Flameproof packing adaptor
F0411.ai Option Code Diameter for Cable outer Identification Parts NO.
G11 screw diameter mark G9601AM
Figure 4.10 Example of Wiring (Integral Type and G12 mm (inch)
Remote Type Detector (DY-N)) G11
ø8.0 to ø10.0 16 8-10
G12 (ø0.31 to ø0.39)
ø10.0 to ø12.0 16 10-12
(ø0.39 to ø0.47)
IM 01F06A01-01EN
<4. WIRING> 25
T1 (6) Be sure to observe the following precautions
when wiring.
Adapter body (M. Screw) (a) Do not connect cables outdoors in wet
weather in order to prevent damage from
O-Ring Unit : mm condensation and to protect the insulation.
(approx. inch) (b) Do not splice the cable between the
16.5 Packing case flowtube terminal and the converter if it is
D too short. Replace the short cable with a
Hexagon socket set screw cable that is the appropriate length.
(c) The signal cables must be routed in
Packing * separate steel conduit tubes 16 (JIS C
8305) or flexible conduit tubes 15 (JIS C
18 Hexagon socket set screw 8309).
(d) Always route the power and output signal
FL O-Ring cables in separate steel conduit tubes,
G except when the power supply voltage is 24
O-Ring V and four-core cables are used for wiring.
Keep conduits or flexible tubes watertight
Washer C using sealing tape.
Union nut
*Packing Packing gland
(Choose from the table
below depend on cable Clamp ring
outside diameter)
T2 Clamp nut
O-Ring
B.coupling
Cable (user’s scope)
F0414.ai
Size Cable outer Packing Identification Weight
diameter dimensions
T1 T2 C D mark kg (lb)
L FG
G 1/2 G 1/2 ø8.0 to ø10.0 ø10.0 ø20.0 16 8-10 0.26
35 39 94.5 (ø0.31 to ø0.39) (ø0.39) (ø0.79) 16 10-12 (0.57)
(1.38) (1.54) (3.72) ø10.0 to ø12.0
ø12.0
(ø0.39 to ø0.47) (ø0.47)
Figure 4.13 Flameproof Packing Adapter (option
code: /G11, /G12)
(5) Perform attachment of flameproof packing 4.7 Grounding 4
adaptor in the following ways. Read Figure
4.12. IMPORTANT WIRING
(a) Loosen the locking screw and remove the
terminal box cover. When a lightning protector (option code: /A) is
(b) Measure the cable outer diameter in two selected, use a grounding resistance of 10Ω or
directions to within 0.1 mm. less.
(c) Calculate the average of the two diameters,
and use packing with an internal diameter (1) The grounding terminals are located on the
nearest to this value. Read Table 4.2. inside and outside of the terminal area. Either
(d) Screw the flameproof packing adapter into terminal may be used. Read Figure 4.14.
the terminal box until the O-Ring touches
the wiring port (at least 6 full turns), and (2) For pulse output version, ground the flowmeter.
firmly tighten the lock nut. Also ground the shielded cable between the
(e) Insert the cable through the union nut, the converter and the pulse receiver.
B. coupling, the clamp nut, the clamp ring,
the packing gland, the washer, the packing, (3) Grounding should satisfy Class D requirements
and the packing case, in that order. (ground resistance 100Ω or less).
(f) Insert the end of the cable into the terminal
box. (4) Use 600V PVC insulated wire for grounding.
(g) Tighten the union cover to grip the cable.
When tightening the union cover, tighten Grounding
approximately one turn past the point where Example: Integral Type Terminals
the cable will no longer move up and down.
Proper tightening is important. If it is too F0415.ai
tight, a circuit break in the cable may
occur; if not tight enough, the flameproof Figure 4.14 Grounding Terminal
effectiveness will be compromised.
(h) Fasten the cable by tightening the clamp
nut.
(i) Tighten the lock nut on the union nut.
(j) Connect the cable wires to each terminal.
IM 01F06A01-01EN
<5. BASIC OPERATING PROCEDURES (DISPLAY)> 26
5. BASIC OPERATING PROCEDURES
(DISPLAY)
Data setting can be performed with the three keys
on the front panel (SET,SHIFT and INC) or using a
handheld BRAIN TERMINAL (BT200) and HART
communicator.
5.1 Display Configuration
Figure 5.1 shows the configuration of the
digitalYEWFLO display panel (if equipped).
1 Data Display
(Upper)
4 Unit Display
3 Alarm Display SET
2 Data Display SHIFT INC
(Lower)
4 Unit Display
Figure 5.1 5 Setting Keys
F0501.ai
Display Configuration
1 Data Display(Upper) : flowrate data, setting data,
total data
temperature data (/MV)
2 Data Display(Lower) : total data, alarm data
temperature data (/MV)
3 Alarm Display : alarm of a flow error and a
vibration error
4 Unit Display : flowrate unit
5 Setting Keys : These keys are used to
change flow rate data
displays and type of
setting data
Read IM01F06A00-01EN Section 5.2 for “Display
Contents”, Section 5.3 for “Display Mode”, Section
5.4 for “Setting Mode”.
IM 01F06A01-01EN
<6. PARAMETERS> 27
6. PARAMETERS BASIC OPERATING PROCEDURES (DISPLAY)
6.1 digitalYEWFLO Parameters 5
6
The parameters are set before factory shipment.
Set the required parameter of changing fluid, PARAMETERS
contact out and indication of display.
6.2 Parameter Configuration
Item A: Indication
Item B: Easy Setting
Item C: Basic Setup
Item D: Additional Setup
Item E: Detector Setup
Item F: Thermometer (Only for Multi-Variable Type)
Item H: Adjust
Item J: Test
Item K: Maintenance
Item M: Memo
IMPORTANT
For the remote type, be sure to set the cable
length (F52) for DYA remote type converter,
because of effect of the cable length.
Read IM01F06A00-01EN Section 6.3 for
“Parameter List” , Section 6.4 for “Parameter
Description”.
IM 01F06A01-01EN
Diagnostic Current Output % Output Pulse Engineering Totalizing Engineering Pulse / Status Output 6.3 Self-Diagnostic (Error Code List)
Message Output Unit Output Output Temp Output
Indication Error Name Problem Cause Select flow Select Select flow Select Pulse(*2) Status(*2) Alarm(*2) How to recover When an ERROR is displayed by SELF CHECK in item A60, B60, C60, D60, E60, H60, J60, K60 or M60,
rate temperature rate temperature press function key F2 [DIAG] and the error contents are displayed.
Err-01 FLOW Over range Output signal is Fixed at Normal Fixed at Normal Normal Normal Normal Normal Normal Normal OFF(H) Change
OVER 110%(*1) Operation 110%(*1) Operation parameters or
output 110% or more(*1) Operation Operation Operation Operation Operation Operation
OUTPUT signal over ranged flow
input
Err-02 SPAN SET Span Setting Span setting Normal Normal Normal Normal Normal Normal Normal Normal Normal Normal OFF(H) Change
ERROR Error parameter is more Operation Operation Operation Operation Operation Operation Operation Operation Operation Operation parameters span
than 1.5 times of factor is outside the
max flow velocity acceptable limits
Err-06 PULSE OUT Pulse output Pulse output Normal Normal Normal Normal Fixed at Normal Normal Normal Fixed at Change
ERROR error frequency is more Operation Operation Operation Operation 10KHz Operation Operation Operation 10kHz parameters
than 10kHz (ItemC,ItemE)
Err-07 PULSE SET Pulse setting Pulse output Normal Normal Normal Normal Normal Normal Normal Normal Normal Change
ERROR error frequency setting is Operation Operation Operation Operation Operation Operation Operation Operation Operation parameters
more than 10kHz (ItemC,ItemE)
CHECK Transient Error of Transitional Hold Normal Hold Normal Normal Hold Normal Normal Hold Hold OFF(H) CHECK the
Vibration noise Vibration disturbance Operation Operation Operation Operation Operation vibration
CHECK High Error of High vibration Based on Normal Based on Normal Stop Output Based on Stop the total Normal Normal Normal OFF(H) CHECK the
Vibration vibration Vibration K45 Operation K45 Operation K45 Operation Operation Operation vibration
CHECK Fluctualing Error of Flow Fluctuating Normal Normal Normal Normal Normal Normal Normal Normal Normal Normal OFF(H) CHECK the
Flow Operation Operation Operation Operation Operation Operation Operation Operation Operation Operation clogging
CHECK Clogging Error of Flow Clogging Normal Normal Normal Normal Normal Normal Normal Normal Normal Normal OFF(H) CHECK the
Flow Operation Operation Operation Operation Operation Operation Operation Operation Operation Operation clogging
Err-10(*3) TEMP Over range Temp output signal Normal Fixed at 110% Normal Fixed at 110% Normal Normal Normal Normal Normal Normal OFF(H) CHECK the
OVER Temp output is 110% or more, Operation in case of over Operation in case of over Operation Operation Operation Operation Operation Operation temperature
OUTPUT signal and 0% below. 110%, and fixed 110%, and fixed or temperature
at 0% when at 0% when in span
in case of less case of less than
than 0%.(*1) 0%.(*1)
Err-11(*3) OVER Error of Temp value is -50°C Remain in Remain in Remain in Remain in Remain in Remain in Remain in Remain in Remain in Remain in OFF(H) CHECK the
TEMP temperature below or 300°C operationat operation at operationat operation at operation at operation at operation at operation at operation at operation at temperature
over. Temp=-50°C or Temp=-50°C or Temp=-50°C or Temp=-50°C or Temp=-50°C or Temp=-50°C or Temp=-50°C or Temp=-50°C or Temp=-50°C or Temp=-50°C or
Temp=300°C Temp=300°C Temp=300°C Temp=300°C Temp=300°C Temp=300°C Temp=300°C Temp=300°C Temp=300°C Temp=300°C
Err-12(*3) TEMP Error of Disconnection Remain in Based on F58 Remain in Based on F58 Remain in Remain in Remain in Based on Remain in Remain in OFF(H) Change
operation operation operation F58 operation operation thermometer
SENSOR thermometer or short of operation operation
FAULT thermometer sensor at Manual at Manual at Manual at Manual at Manual at Manual at Manual sensor.
setting setting setting setting setting setting setting
condition condition condition condition condition condition condition
Err-13(*3) TEMP Error of Temperature Remain in Based on F58 Remain in Based on F58 Remain in Remain in Remain in Based on Remain in Remain in OFF(H) Change
CONV. temperature converter is failed operation operation operation operation operation F58 operation operation converter
FAULT converter at Manual at Manual at Manual at Manual at Manual at Manual at Manual case build in
setting setting setting setting setting setting setting temperature <6. PARAMETERS>
condition condition condition condition condition condition condition sensor.
Err-20 PRE-AMP PRE-AMP is Normal Remain in Normal Remain in Normal Normal Normal Remain in Normal Normal OFF(H) Replace the
ERROR failed Operation operation at Operation operation at Operation Operation Operation operation at Operation Operation AMP. unit
Manual Setting Manual Setting Manual Setting
Temperature Temperature Temperature
Value Value Value
Err-30 EE PROM EEPROM Over 110% Over 110% or Fixed at 0% Fixed at 0% Halt Fixed at 0% Halt Fixed at 0% Stop the OFF(H) OFF(H) Replace the
ERROR is not or -2.5% -2.5% below Output AMP. unit
functioning below
correctly
Err-40 FLOW Error of Flow Flow sensor Is fauit. Normal Normal Normal Normal Normal Normal Normal Normal Normal Normal OFF(H) Change Flow
SEBSOR sensor Operation Operation Operation Operation Operation Operation Operation Operation Operation Operation sensor
FAULT
IM 01F06A01-01EN CPU FAULT CPU is All operations are Over 110% Over 110% or Halt Halt Halt Halt Halt Halt Halt Halt Halt Replace the
failed Dead. Display and or -2.5% -2.5% below AMP. unit
self dignostic function below
is also dead.g
Note. Normal Operation : Operation continues without relation to error occurrence. (*1): “110%” is based on “D30 : OUT LIMIT(H)”.
Remain in Operation : Calculation continues with relation to error occurrence. (*2): Pulse output : These conditions should be done in case of which B20 is “SCALED PULSE”, “UNSCALED PULSE”, “FREQUENCY”. 28
Status output : These conditions should be done in case of which B20 is “FLOW SW (LOW :ON)”, “FLOW SW (LOW : OFF)”.
Alarm output : These conditions should be done in case of which B20 is “Alarm”.
(*3): Only for /MV
<7. COMMUNICATION (BRAIN / HART)> 29
7. COMMUNICATION (BRAIN / HART)
This chapter describes the operation procedures IMPORTANT
using a BRAIN TERMINAL (BT200). For details on
the functions of the digitalYEWFLO, read Chapter After setting a parameter, keep the power on for
6 “PARAMETERS.” And also, read the “Model at least 30 seconds.
BT200 BRAIN TERMINAL” Instruction Manual (IM If the power of flowmeter is turned off, a
01C00A11-01E) for more detailed Information. parameter setting is released.
7.1 Connection Method for the (2) Connection of BT200 to Flow Converter
BT200 Removing a cover and indicator, the terminals
for BRAIN communication are provided on the
(1) Connecting the BT200 to a 4 to 20mA circuit board.
DC Transfer Line Connect BT200 to the terminal of HHT-COM on
The communication signal of the the circuit board.
digitalYEWFLO is superimposed onto the 4 to
20mA DC analog signal to be transferred.
digitalYEWFLO 4 to 20mA DC
SUPPLY Inter mediate Signal Control room
terminals transmission
line Terminal
Board
SUPPLY
Receiving
instrument
load
resistance:
250 to 600Ω
BT200 BT200 BT200 BT200 Display Circuit board
F0701.ai Indicator Mounting 7
Screw (2 PCS)
Figure 7.1 Communicating for a 4 to 20mA DC COMMUNICATION (BRAIN / HART)
Signal Line P
IMPORTANT COM TP2
HHT
Communication signal is superimposed on
analog output signal. It is recommended to BT200 F0702.ai
set a low-pass flter (approximately 0.1s) to the Figure 7.2
receiver in order to reduce the output effect Connection of BT200 to Flow Converter
from communication signal. Before online-
communication, confirm that communication
signal does not give effect on the upper system.
IMPORTANT
The communicable distance of the transmission
line is restricted depending on the wiring method.
Read Chapter 4 “WIRING.”
IM 01F06A01-01EN
<7. COMMUNICATION (BRAIN / HART)> 30
7.2 Connection Method for the
HART Configuration Tool
The HART Configuration Tool can interface with
the digitalYEWFLO from the control room, the
digitalYEWFLO site, or any other wiring termination
point in the loop, provided there is a minimum load
resistance of 250 Ω between the connection and
the receiving instrument. To communicate, it must
be connected in parallel with the digitalYEWFLO,
and the connections must be non-polarized. Figure
7.3 illustrates the wiring connections for a direct
interface at the digitalYEWFLO site. The HART
Configuration Tool can be used for remote access
from any terminal strip as well.
digitalYEWFLO Control room
Terminal board
4 to 20 mA DC signal line
SUPPLY +
SUPPLY – Relaying
terminals
HART HART Receiving instrument
Configuration Tool Configuration Tool load resistance:
250 Ω to 600 Ω
HART
Configuration Tool
F0703.ai
Figure 7.3 Connecting the HART Communicator
Read IM 01F06A00-01EN Section 7.2 for “BT200
Screen and Displaying Flow Rate” and Section
7.3 “Setting Parameters using BT200”.
Read IM 01F06A00-01EN Chapter 8 for
“OPERATION VIA HART CONFIGURATION
TOOL (HART 5)” , Chapter 9 for “OPERATION
VIA HART CONFIGURATION TOOL (HART 7)”
Note: HART is a registered trademark of the HART
Communication Foundation (HCF).
IM 01F06A01-01EN
<8. OPERATION> 31
8. OPERATION 3. In case the load resistance is 250Ω, digital
multimeter indicates 5V. Otherwise if it is known
After you have installed the flowmeter into the load resistance value, it indicates R (Ω) × 0.02
process piping, wired the input/output terminals, set (A).
up the required parameters, the vortex flowmeter
should output an accurate flow signal from its 4. Check output value is in the rated value (±0.016
terminals as soon as the measured liquid begins to mA) after set 50% in Parameter J10.
flow.
This section describes procedure of test method 5. Check output value is in the rated value (±0.016
and adjustment method for the pre-operation. mA) after set 0% in Parameter J10.
NOTE SUPPLY + 250Ω 24V DC
SUPPLY ±10%
The initial parameter setting has already been
done at the factory according to the sizing data –
when ordering. Therefore it is not necessary to
set parameters except measurement condition digital
changes or some additions happen. multimeter
8.1 Adjustment BT200 F0801.ai
Connection of Maintenance
8.1.1 Zero Adjustment Figure 8.1 Instruments
No zero adjustment is necessary since the zero IMPORTANT 8
point does not shift.
Because of the effect of electrical noise and • When using any test-purpose measuring OPERATION
vibration noise, digitalYEWFLO may provide an instruments, do not ground them.
output even when the flowrate is zero. In that case,
properly eliminate the source of the noise. • All of your parameter settings will be
Read Section 8.2 “Adjustment for Manual Mode.” cancelled if you turn digitalYEWFLO off less
than 30 seconds after the parameter setup.
8.1.2 Span Adjustment Keep digitalYEWFLO turned on at least 30
seconds after setting up the parameters.
In normal application, you need not confirm the
span. NOTE
If you need to ensure the output of 4 to 20mA DC,
read Subsection 8.1.3 “Loop Test.” When configure the parameters using the
HART Configuration Tool, read IM 01F06A00-
8.1.3 Loop Test 01EN Section 8.11 “Menu Tree (HART 5)” or
IM 01F06A00-01EN Section 9.11 “Menu Tree
To ensure output of 4 to 20mA DC or pulse, their (HART 7).”
loop tests can be done using parameter “J10
(Analog out)” or “J20 (Pulse test)”.
If you are verifying the analog output, follow the
procedure on the verification procedure.
<Check Procedure>
1. Connect the instruments referring to Figure 8.1,
and warm up for three minutes more.
2. Set span frequency in Parameter J10:OUT
ANALOG.
IM 01F06A01-01EN
<8. OPERATION> 32
8.1.4 Totalizer Start and Totalizer Reset 8.1.6 Setting of Burnout Switch
When using the Totalizer Function, the start setup digitalYEWFLO is equipped with a CPU error
should be done. burnout function used to set the output direction
(1) Start operation using BT200 upon CPU error, and a sensor burnout function
that sets the direction of the output in the event of
Enter to B40(TOTAL START), and move the burnout of the temperature sensor. When factory-
video bar to “EXECUTE”. Push “ENTER” key shipment under normal conditions, the output of
at 2 times. both CPU error burnout and sensor burnout are
(2) Start operation using indicator set to HIGH, but if option code /C1 is specified,
Enter to “Setting mode”, move to B40 of the CPU error burnout is set to LOW(-2.5% below)
parameter number, and enter to “01” of data output, and sensor burnout is set to LOW(-2.5%
number. below) output, respectively. The setting of the
Read Section IM 01F06A00-01EN 5.4 “Setting direction of output from burnout can be changed.
Mode.” To change the direction of output arising from
Totalized value can be reset using the indicator or burnout, switch the setting pin on the CPU
BT200. assembly (Read Table 8.1).
(1) Reset operation using BT200
Enter to B42 (TOTAL RESET), and move the Table 8.1 Output Setting Pin for Burnout
video bar to “EXECUTE”. Push “ENTER” key at
2 times. Pin CPU error CPU error Remark
(2) Reset operation using indicator position burnout burnout
Enter to “Setting mode”, move to B47 of direction output
parameter number, and enter to “01” of data
Number. H 110% or more Set to HIGH
Read IM 01F06A00-01EN Section 5.4 “Setting (21.6mA DC) before shipment.
Mode.” HIGH
8.1.5 Setting of Pulse Output (Scaling) L
Pulse output are constructed by two units, that are H -2.5% or less Set to LOW for
“Scaled pulse and Unscaled Pulse”. (3.6mA DC) option code /C1.
LOW
(1) Scaled Pulse
L
When SCALED PULSE is selected in B20, set
flowrate per one pulse output. Rate unit is linking to P
the flow unit.
COM TP2
(2) Unscaled Pulse
HHT Pin position of
When UNSCALED PULSE is selected in B20, it Write Protect Switch
outputs the pulse calculated by following formula.
The formula for output pulse number is as follows. Pin position of Burnout Switch
Output pulse number per one second = vortex
number per one second / PULSE RATE set F0802.ai
number.
Read IM 01F06A00-01EN Section 11.6 “Flow Figure 8.2 Pin position of Burnout and Write
Calculation.” Protect Switch
● Pulse Rate setting
Pulse rate setting is settable by “B21:PULSE
RATE”.
IM 01F06A01-01EN
<8. OPERATION> 33
8.1.7 Setting of Write Protect Switch 8.2 Adjustment for Manual Mode
By setting the write protect function to “Protect”, it is digitalYEWFLO does not need the initial adjustment
possible to prevent the overwriting of parameters. because digitalYEWFLO is always adjusted by itself
Write protection can be carried out using either the automatically.
hardware switch on the CPU board (i.e., Switch These adjustments should be done in case that
2) or software parameter settings. If either of indicator reads over zero at zero flow.
these items is set to “Protect”, the overwriting of
parameters will be prohibited. 8.2.1 Low Cut Adjustment
NOTE Adjust to noise elimination or zero flow in the low
flowrate (or low frequency) range.
If the hardware switch is set to “Protect”, it The settable range for low cut flowrate is to half of
will not be possible to overwrite parameters; minimum flowrate.
furthermore, this condition will be maintained
until the switch is set to “Enable”. 8.2.2 Zero Tuning
For more details regarding usage of the write This adjustment should be done according to a flow
protect function and the software’s parameter figure shown below.
switches, read IM 01F06A00-01EN Section 8.9
“Software Write Protect” or IM 01F06A00-01EN START
Section 9.9 “Software Write Protect.”
Is it zero flow? No
Table 8.2 Setting pin for Write Protect Yes Stop flow to be zero
Pin position CPU error
burnout direction
Set "TUNING AT ZERO"
N of "K25:N.B MODE"
Enable Wait more than 30 seconds
Ensure the complete of the
Y tuning function.
N Is indication reads zero Yes Finishing the tuning
at zero flow? functios
Protect
No
Y
8.1.8 Power Failure 8
When a power failure occurs, the totalized value Retry the tuning and ensure Ensure TLA value OPERATION
will be protected by EEPROM (Electrically Erasable the pipeline conditions? in "K10: TLA"
Programmable ROM). But during a power failure,
the vortex flowmeter stops and also the totalizing Figure 8.3 Tuning Flow F0803.ai
will stop.
After a power is recovered, the vortex flowmeter If this adjustment is executed, the following value is
and the totalizing start to work automatically. changed.
EEPROM doesn’t need a battery for backup.
K25:N.B MODE = MANUAL
K26:NOISE RATIO=Constant value
Minimum flowrate is increased when TLA value is
changed form initial value.
IM 01F06A01-01EN
<8. OPERATION> 34
1. Tuning method
(1) Ensure the condition of flowrate
The necessary condition for tuning function is zero
flow.
(2) Executing the tuning function.
Set “ TUNING AT ZERO” of “K25:N.B MODE”.
Wait more 30 second.
(3) Finishing the tuning functions
Using the BT200
(a) Press “DATA” key of BT200 function key.
(b) Ensure the indication of “MANUAL” which is
“K25:N.B MODE”
(“NOW TUNING” is indicated during tuning
operation.)
Using the indicator
(a) Press “SHIFT” and “SET” key
simultaneously.
(b) Press “SET” key and ensure “01” of Lower
indication.
(“02” is indicated during tuning operation.
Execute (a), (b) once again.)
2. TLA value
TLA values is possible to change after executing
“TUNING”. In this case, minimum flowrate is
increased.
Minimum flowrate for TLA value is given by below
equation.
Minimum Flowrate Specified Minimum TLA Value after Tuning
after changing TLA Flowrate
Value TLA initial value or defalt value
F0804.ai
Ensure minimum flowrate for changing TLA value.
3. Output
After tuning, ensure that the indication reads is zero
where no fluid is flowing.
If the indication reads over zero is done
continuously, retry the tuning and ensure the below
condition.
Does high vibrations occur in pipeline?
In this case, read Section 3.1 “Installation
Precautions”, and keep the pipeline properly.
IM 01F06A01-01EN
<9. ERRORS AND COUNTERMEASURES FOR DISPLAY UNIT AND BRAIN PROTOCOL> 35
9. ERRORS AND COUNTERMEASURES
FOR DISPLAY UNIT AND BRAIN
PROTOCOL
Read IM 01F06A00-01EN Chapter 11 for “MAINTENANCE”.
CAUTION
Please avoid replacing the amplifier unit from the case, and the vortex shedder bar. When these procedures
are needed, please contact the nearest Yokogawa office.
9.1 Large Errors or Unstable Output Check the avitation,
read
• If a built-in indicator is attached, IM 01F06A00-01EN
check the display of the error code. Section 13.4
"Sizing."
• Connect a hand-held terminal and
check self-diagnostic.
Is there a snapping Yes
sound from the flowmeter ?
Was a faulty area Yes No
found with self-diagnosis?
Read Section 6.3
No "Self-Diagnostic (Error Is digitalYEWFLO No Ground
Code List)" and check properly grounded? digitalYEWFLO.
for recovery measures.
Are the parameters No Yes
configured correctly at Configure the
operating conditions? parameters Does the value in This case is due to
correctly "K34:VORTEX FREQ."
coating of stuff
undergo a lot of Yes vortex shedder bar.
changes?
Yes Check the piping
Is straight lengths of inner surfaces.
pipeline stable?
Ensure the straight No
Yes No lengths of pipeline,
9
read Chapter 3
"INSTALLATION."
Normal
Does gaskets protrudes? Replace the Yes ERRORS AND COUNTERMEASURES FOR
Yes gaskets, read Check standards. DISPLAY UNIT AND BRAIN PROTOCOL
Chapter 3
"INSTALLATION".
No
Note 1: This is the temperature and pressure at digitalYEWFLO
mounted place.
Note 2: Contact with our service in case this is not carried out into
the right statement.
F0901.ai
9.2 The Indication Goes to Zero at Certain Time
When this problem occurred, the cause is suspected of deterioration of sensor sensitivity and turbulent of fluid
flow due to coating on the shedder bar and flowmeter inner tube.
How to cope with this problem
1) Read IM 01F06A00-01EN Section 11.5 “Vortex Shedder Removal,” take out the Vortex Shedder bar and clean
it.
2) If there is the coating on inner tube of the flowmeter, remove the flowmeter body from adjacent pipes and clean it.
IM 01F06A01-01EN
<9. ERRORS AND COUNTERMEASURES FOR DISPLAY UNIT AND BRAIN PROTOCOL> 36
9.3 No Output When The Fluid is Flowing
• If a built-in indicator is attached,
check the display of the error code.
• Connect a hand-held terminal and
check self-diagnostic.
Was a faulty area Yes
found with selfdiagnosis?
Check for recovery measures, read
No Section 6.3 "Self-Diagnostic (Error Code List)."
Is the output signal current No
present?
Yes
Read Section 8.1.3 No Replace the Are the power polarities No Check the
"Loop Test" and is the result OK? AMP unit. correct? polarities.
Yes Yes Yes Fasten the
power terminal.
Are parameters configured No Configure the Are there any disconnected
correctly at operating parameters correctly. power terminals? Yes Replace the
conditions? cable.
No
Yes
Is "K34:VORTEX FREQ" 0Hz? No Is the cable broken?
Yes No
Yes Replace the
AMP unit.
Is the low cut configured correctly?
No
Configure the Low
cut value correctly.
Is the TLA value configured No Configure the TLA value, read Section
correctly? 8.2 "Adjustment for Manual Mode."
Yes
Is the density value configured No Configure the density value correctly
correctly? at operating conditions.
Yes
Is output indicated when No Is there broken the sensor? Yes Replace the
"K25:N.B MODE" is "MANUAL" shedder bar
and "K26:NOISE RATIO" is "0"? No
Yes Replace the
AMP unit.
This case is due to coating of
vortex shedder bar.
Check the shedder bar piping inner
surfaces.
F0902.ai
IM 01F06A01-01EN
<9. ERRORS AND COUNTERMEASURES FOR DISPLAY UNIT AND BRAIN PROTOCOL> 37
9.4 Output is Indicated at Zero Flow
• If a built-in indicator is attached,
check the display of the error code.
• Connect a hand-held terminal and
check self-diagnostic.
Was a faulty area Yes
found with selfdiagnosis? Check for recovery measures, read Section
6.3 "Self-Diagnostic (Error Code List)."
No
Stop flow.
Is fluid flowing? Yes
Configure the parameters correctly.
No
Adjust to within the tolerance limits.
Are parameters configured No
correctly at operating No Ground digitalYEWFLO.
conditions?
Adjust to low cut, read Section 8.2
Yes "Adjustment for Manual Mode"
Are the load resistance Execute the tuning, read Section
and supply voltage within 8.2 "Adjustment for Manual Mode"
the tolerance limits?
Yes
Is digitalYEWFLO No
properly grounded?
Yes
Does low cut adjust? No
Yes
9
Does the tuning execute? No ERRORS AND COUNTERMEASURES FOR
DISPLAY UNIT AND BRAIN PROTOCOL
Yes
Does high vabrations Yes Eliminate vibration noise using pipe
occurs in pipeline? support.
No F0903.ai
Are pulsation produced?
Check the pipeline conditions,
read Chapter 3 "INSTALLATION."
IM 01F06A01-01EN
<9. ERRORS AND COUNTERMEASURES FOR DISPLAY UNIT AND BRAIN PROTOCOL> 38
9.5 Multi-Variable Type (/MV)
• If a built-in indicator is attached,
check the display of the error
code.
• Connect a hand-held terminal and
check self-diagnostic.
Was a faulty area Yes
found with self-diagnostic?
No Check for recovery measures, read
Section 6.3 "Self-Diagnostic (Error Code List)."
Are the power polarities No Check the polarities.
Correct?
Adjust to within the tolerance limits.
Yes
Check the sensor.
Are the load resistance No
and supply voltage within Configure the parameters correctly.
the tolerance limits?
F0904.ai
Yes No
Are the sensor
connected correctly?
Yes
Are the parameters No
confiured correctly at
operational conditions?
Yes
Read Section 9.1 to 9.4.
IM 01F06A01-01EN
<10. EXPLOSION PROTECTED TYPE INSTRUMENT> 39
10. EXPLOSION PROTECTED TYPE
INSTRUMENT
NOTE (1) Technical Data
• Read Chapter 12 for Fieldbus • Flameproof
Communication Type Intrinsically safe
approval. Applicable Standard : EN 60079-0: 2009,
In this chapter, further requirements and differences EN 60079-1: 2007
for explosion protected type instrument are
described. For explosion protected type, the Certificate : DEKRA 11ATEX0212X
description in this chapter is prior to other
description in this User’s Manual. Type of Protection:
WARNING Ex d IIC T6…T1 Gb (Integral Type and Remote
• Only trained persons use this instrument in Type Detector)
industrial locations.
Ex d IIC T6 Gb (Remote Type Converter)
CAUTION
Group: II, Category: 2 G
• Process temperature and ambient
temperature on this section are the Specification of Protection:
specifications for explosion protected type.
Read IM 01F06A00-01EN Section 13.1 Temperature Class: (Integral Type and Remote
“Standard Specifications” before operating.
Type Detector)
10.1 ATEX
Temperature Class Process Temperature
WARNING
T6 -40°C to +80°C
• Only trained persons use this instrument in
industrial locations. T5 -40°C to +100°C
• Electrostatic charge may cause an explosion T4 -40°C to +135°C
hazard.
Avoid any actions that cause the generation T3 -40°C to +200°C
of electrostatic charge, such as rubbing with
a dry cloth on coating face of product. T2 -40°C to +300°C
T1 -40°C to +450°C
*1 Note: Use /HT version above +250°C
Temperature Class: T6 (Remote Type Converter)
Ambient Temperature:
-30 to +60°C (With Indicator)
-40 to +60°C (Without Indicator)
Power Supply: 10.5 to 42Vdc max.
Output Signal: Current Output; 4 to 20mAdc
Pulse Output; On=2Vdc, 200mA
Off=42Vdc, 4mA
Special Fastener: Class A2-50 or more
• Intrinsically Safe 10
Applicable Standard: EN 60079-0: 2009, EXPLOSION PROTECTED
EN 60079-0: 2012, TYPE INSTRUMENT
EN 60079-11: 2012,
EN 60079-26: 2007
Certificate: DEKRA 13ATEX0192 X
Type of protection:
Ex ia IIC T4…T1 Ga (Integral Type)
Ex ia IIC T6…T1 Ga (Remote Type Detector)
Ex ia IIC T4 Ga (Remote Type Converter)
Group: II, Category: 2 G
Ambient Temperature:
-50 to +60°C (Integral Type)
-50 to +80 [+79]°C (Remote Type Detector)
(Option /LT below -29°C, [ ] for Option /MV at T6)
-50 to +80°C (Remote Type Converter)
IM 01F06A01-01EN
<10. EXPLOSION PROTECTED TYPE INSTRUMENT> 40
Temperature Class: Process Temperature (2) Installation
(Integral Type) -50°C to +135°C
-50°C to +199°C WARNING
Temperature Class -50°C to +250°C
T4 –50°C to +250°C • All wiring shall comply with local installation
T3 requirements and local electrical code.
T2
T1 • Use the suitable heat-resisting cables (over
90°C) for the digitalYEWFLO Series Vortex
(Remote Type Detector) Process Temperature * Flowmeter when the ambient temperature
–196°C to +84/[+79]°C exceeds 60°C and/or the process
Temperature Class temperature exceeds 200°C.
T6 –196°C to +100°C
T5 –196°C to +135°C • Cable glands and adapters shall be of Ex “d”
T4 –196°C to +199°C for Ex “d” installations.
T3 –196°C to +299/[+289]°C
T2 –196°C to +449/[+439]°C • Cable glands and adapters shall be installed
T1 so as to maintain the specified degree of
protection (IP Code) of the flowmeter.
*: Use /HT option above +250°C, use /LT option below -29°C,
[ ] for /MV option. The grounding terminals are located on the inside
and outside of the terminal area.
Electrical data: Connect the cable to grounding terminal in
Supply and Output Circuit accordance with wiring procedure (1) or (2).
(SUPPLY + and -, PULSE + and -);
Maximum Input Voltage Ui: 30Vdc Case
Maximum Input Current Ii: 300mA
(Read Contact rating for pulse output.)
Maximum Input Power Pi: 0.9 W
Internal Capacitance Ci: 14nF
Internal Inductance Li: 0mH
Electrical Connection: ANSI 1/2 NPT female,
ISO M20 X 1.5 female
Cable Washer
Special conditions for safe use Screw Screw
• Precautions shall be taken to minimize the risk
from electrostatic discharge of painted parts. Washer Cable Clamp
• When the enclosure of the flow meter or the
flow converter are made of aluminum, if it is (1) Internal grounding terminal (2) External grounding terminal
mounted in an area where the use of EPL Ga F1001.ai
equipment is required, it must be installed such
that, even in the event of rare incidents, ignition Figure 10.1 Wiring Procedure for Grounding
sources due to impact and friction sparks are Terminals
excluded.
• The dielectric strength of at least 500 V a.c.
r.m.s. between the intrinsically safe circuits and
the enclosure of the flow meter or the converter
is limited only by the overvoltage protection.
IM 01F06A01-01EN
<10. EXPLOSION PROTECTED TYPE INSTRUMENT> 41
(3) Operation (5) Installation Diagram of Intrinsically safe
(and Note)
WARNING
[Integral type] Hazardous Non Hazardous
• In case of Flameproof, wait 3 min. after Location Location
power is turned off, before opening the
covers. DY (Flowmeter) + Safety barriers
• Take care not to generate mechanical SUPPLY ++
spark when access to the instrument and --
peripheral devices in hazardous locations. -
++
(4) Maintenance and Repair PULSE --
WARNING +
• The instrument modification or parts [Remote type without built-in Temperature sensor]
replacement by other than authorized
representative of Yokogawa Electric Hazardous Non Hazardous
Corporation is prohibited and will void the Location Location
certification.
DY-N (Detector) DYA (Converter) + Safety barriers
A SUPPLY
A ++
B B- --
T T
C PULSE+ ++
--
DYC: Signal cable
[Remote type with built-in Temperature sensor]
Hazardous Non Hazardous
Location Location
DY-N (Detector) DYA (Converter) + Safety barriers
A SUPPLY
A B- ++
B T --
T C PULSE+
++
--
DYC: Signal cable
Electrical data:
Signal/Supply Circuit (Terminals SUPPLY + and –):
Ui = 30 V, Ii = 300 mA, Pi = 0.9 W (linear source),
Ci = 14 nF, Li = 0 mH
Pulse Circuit (Terminals PULSE + and –):
Ui = 30 V, Ii = 300 mA*, Pi = 0.9 W (linear source),
Ci = 14 nF, Li = 0 mH
*: Read “Contact rating” for the maximum current value of
Pulse Circuit
Note: 10
- It shall be assured that the voltage difference between the
output circuits of the associated apparatus (safety barriers)
is not more than 30V.
- Cables for the connection for Signal/Supply Circuit and
Pulse Circuit shall be of Type A or B in accordance with EN
60079-14, otherwise the sum of Io of the associated
apparatus (safety barriers) shall be not more than 300 mA.
F1002.ai
(6) Electrical Connection
The type of electrical connection is stamped near EXPLOSION PROTECTED
the electrical connection port according to the TYPE INSTRUMENT
following codes.
Screw size Marking
ISO M20 X 1.5 female
!M
ANSI 1/2-14NPT female ! N
F1003.ai
IM 01F06A01-01EN
<10. EXPLOSION PROTECTED TYPE INSTRUMENT> 42
(7) Name Plate
[Integral type, Flameproof]
*2
[Remote type detector, Flameproof]
*2
[Remote type converter, Flameproof]
*2
[Integral type, Intrinsically safe]
*2
[Remote type detector, Intrinsically safe]
*2
[Remote type converter, Intrinsically safe]
*2
MODEL: Specified model code
SUFFIX : Specified suffix code
STYLE: Style code
SUPPLY : Supply voltage
OUTPUT : Output signal
MWP : Maximum working pressure
PROCESS TEMP.: Process temperature
K-FACTOR : Device-specific factor
RANGE: Specified range
NO.: Upper column: Manufacturing serial number *1
Lower column: The year / month of production
TAG NO. : Specified TAG No.
CE: CE marking
0344: The indentification number of the notified body.
II1G: Group II Category 1 Gas atmosphere
II2G: Group II Category 2 Gas atmosphere
II3G: Group II Category 3 Gas atmosphere
*1) The first number in the second block of “NO.” column is the
last one number of the production year. For example, the
year of production of the product engraved as follows is year
2015.
NO. S5K965926 535 7
↑Produced in 2015
*2) The product - producing country
IM 01F06A01-01EN
<10. EXPLOSION PROTECTED TYPE INSTRUMENT> 43
10.2 FM • Intrinsically Safe 10
(1) Technical Data Applicable Standard: CLASS 3600 1998, EXPLOSION PROTECTED
CLASS 3610 2010, TYPE INSTRUMENT
• Explosion Proof CLASS 3611 2004,
CLASS 3810 2005,
Applicable Standard: CLASS 3600 2011, NEMA 250 1991,
CLASS 3611 2004, ANSI/ISA-60079-0: 2009,
CLASS 3615 2006, ANSI/ISA-60079-11: 2009
CLASS 3810 1989,
Including Supplement 1 1995, Type of Protection:
NEMA 250 1991 Intrinsically safe for Class I, II, III, Div.1, Groups
A, B, C, D, E, F and G,T4 and Class I, Zone 0,
Type of Protection: AEx ia IIC T4 Nonincendive for Class I, II, Div. 2,
Explosionproof for Class I, Division 1, Groups A, B, C, D, F and G, Class III,Div.1, T4,
Groups A,B, C and D; and Class I, Zone 2, Group IIC, T4
Dust-ignition proof for Class II/III, Division 1,
Groups E, F,and G. Ambient Temperature:
–40 to +60°C (Integral Type and Remote Type
“SEAL ALL CONDUITS 18 INCHES.” Converter)
“WHEN INSTALLED IN DIV.2, SEALS NOT –40 to +80°C (Remote Type Detector)
REQUIRED”
Indoors and Outdoors: Type 4X
Enclosure Rating: Type 4X Electrical Parameters: Vmax=30Vdc,
Temperature Code: T6
Ambient Temperature: Imax=165mAdc,
Pi=0.9W, Ci=12nF,
-40 to +60°C (Integral Type and Remote Type Li=0.15mH
Detector) Electrical connection : ANSI 1/2 NPT female
-40 to +60°C (Remote Type Converter)
Power Supply: 42Vdc max. (Integral Type and (2) Wiring
Remote Type Converter) • Explosion proof
Output Signal (Integral Type):
WARNING
Current Output; 4 to 20mAdc
Pulse Output; On=2Vdc, 200mA • All wiring shall comply with National
Electrical Code ANSI/NFPA 70 and Local
Off=42Vdc, 4mA Electrical Code.
Output Signal (Remote Type Detector):
• “SEAL ALL CONDUITS 18 INCHES”
Output Signal to Converter; 30Vp-p, “WHEN INSTALLED DIV.2, SEALS NOT
100µAp-p REQUIRED”.
Input/Output Signal (Remote Type Converter): • Intrinsically Safe
Current Output; 4 to 20mAdc
Pulse Output; On=2Vdc, 200mA NOTE
Off=42Vdc, 4mA
Input Signal from Flowmeter; • For using a hand-held terminal in the
30Vp-p, 100µAp-p hazardous area, read the Control Drawing or
Instruction Manual of handheld terminal.
Electrical connection : ANSI 1/2 NPT female
IM 01F06A01-01EN
<10. EXPLOSION PROTECTED TYPE INSTRUMENT> 44
(3) Operation
• Explosion proof
WARNING
• In case of Explosion protected type, note a
warning label worded as follows.
Warning: OPEN CIRCUIT BEFORE
REMOVING COVER.
INSTALL IN ACCORDANCE WITH
THE INSTRUCTION MANUAL (IM)
01F06A00-01EN.
• Take care not to generate mechanical
spark when access to the instrument and
peripheral devices in hazardous locations.
(4) Maintenance and Repair
WARNING
• The instrument modification or part
replacements by other than authorized
representative of Yokogawa Electric
Corporation is prohibited and will void the
approval of FM Approvals.
IM 01F06A01-01EN
<10. EXPLOSION PROTECTED TYPE INSTRUMENT> 45
(5) Control Drawing
10
EXPLOSION PROTECTED
TYPE INSTRUMENT
IM 01F06A01-01EN
<10. EXPLOSION PROTECTED TYPE INSTRUMENT> 46
IM 01F06A01-01EN
<10. EXPLOSION PROTECTED TYPE INSTRUMENT> 47
10.3 IECEx • Intrinsically Safe
WARNING Applicable Standard: IEC 60079-0: 2011,
• Only trained persons use this instrument in IEC 60079-11: 2011,
industrial locations.
IEC 60079-26: 2006
• Electrostatic charge may cause an explosion
hazard. Certificate: IECEx DEK 13.0066X
Avoid any actions that cause the generation
of electrostatic charge, such as rubbing with Type of protection:
a dry cloth on coating face of product.
Ex ia IIC T4…T1 Ga (Integral Type)
Ex ia IIC T6…T1 Ga (Remote Type Detector)
Ex ia IIC T4 Ga (Remote Type Converter)
Ambient Temperature:
-50 to +60°C (Integral Type)
-50 to +80 [+79]°C (Remote Type Detector)
(1) Technical Data (Option /LT below -29°C, [ ] for Option /MV at T6)
-50 to +80°C (Remote Type Converter)
• Flameproof Temperature Class:
Applicable Standard : IEC 60079-0: 2007, (Integral Type)
IEC 60079-1: 2007 Temperature Class Process Temperature
Certificate : IECEx DEK 11.0077X T4 -50°C to +135°C
Type of Protection: T3 -50°C to +199°C
Ex d IIC T6…T1 Gb (Integral Type and Remote T2 -50°C to +250°C
Type Detector) T1 -50°C to +250°C
Ex d IIC T6 Gb (Remote Type Converter) (Remote Type Detector)
Specification of Protection: Temperature Class Process Temperature *
T6 -196°C to +84/[+79]°C
Temperature Class: (Integral Type and Remote T5
T4 -196°C to +100°C
Type Detector) T3 -196°C to +135°C
T2 -196°C to +199°C
Temperature Class Process Temperature T1 -196°C to +299/[+289]°C
-196°C to +449/[+439]°C
T6 -40°C to +80°C
T5 -40°C to +100°C
T4 -40°C to +135°C
T3 -40°C to +200°C *: Use /HT option above +250°C, use /LT option below -29°C,
[ ] for /MV option.
T2 -40°C to +300°C
T1 -40°C to +450°C
*1 Note: Use /HT version above +250°C Electrical data:
Supply and Output Circuit
Temperature Class: T6 (Remote Type Converter) (SUPPLY + and -, PULSE + and -); 10
Ambient Temperature: Maximum Input Voltage Ui: 30 V dc
Maximum Input Current Ii: 300 mA EXPLOSION PROTECTED
-30 to +60°C (With indicator) (Read Contact rating for pulse output.) TYPE INSTRUMENT
-40 to +60°C (Without indicator) Maximum Input Power Pi: 0.9 W
Power Supply: 10.5 to 42Vdc max. Internal Capacitance Ci: 14nF
Output Signal: Current Output; 4 to 20mAdc Internal Inductance Li: 0mH
Pulse output; On=2Vdc, 200mA Electrical Connection: ANSI 1/2 NPT female,
Off=42Vdc, 4mA ISO M20 X 1.5 female
Special Fastener: Class A2-50 or more
IM 01F06A01-01EN
<10. EXPLOSION PROTECTED TYPE INSTRUMENT> 48
Special conditions for safe use (3) Operation
• Precautions shall be taken to minimize the risk
from electrostatic discharge of painted parts. WARNING
• When the enclosure of the flow meter or the
flow converter are made of aluminum, if it is • In case of Flameproof, wait 3 min. after
mounted in an area where the use of EPL Ga power is turned off, before opening the
equipment is required, it must be installed such covers.
that, even in the event of rare incidents, ignition
sources due to impact and friction sparks are • Take care not to generate mechanical
excluded. spark when access to the instrument and
• The dielectric strength of at least 500 V a.c. peripheral devices in hazardous locations.
r.m.s. between the intrinsically safe circuits and
the enclosure of the flow meter or the converter (4) Maintenance and Repair
is limited only by the overvoltage protection.
WARNING
(2) Installation
• The instrument modification or parts
WARNING replacement by other than authorized
representative of Yokogawa Electric
• All wiring shall comply with local installation Corporation is prohibited and will void the
requirements and local electrical code. certification.
• Use the suitable heat-resisting cables (over
90°C) for the digitalYEWFLO Series Vortex
Flowmeter when the ambient temperature
exceeds 60°C and/or the process
temperature exceeds 200°C.
• Cable glands and adapters shall be of Ex “d”
for Ex “d” installations.
• Cable glands and adapters shall be installed
so as to maintain the specified degree of
protection (IP Code) of the flowmeter.
The grounding terminals are located on the inside
and outside of the terminal area.
Connect the cable to grounding terminal in
accordance with wiring procedure (1) or (2).
Case
Cable Washer
Screw Screw
Washer Cable Clamp
(1) Internal grounding terminal (2) External grounding terminal
F1004.ai
Figure 10.2 Wiring Procedure for Grounding
Terminals
IM 01F06A01-01EN
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