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CRC-15 Communications Manual (without F18 Key)

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Published by capintec, 2018-02-20 20:08:38

CRC-15 Communications Manual (without F18 Key)

CRC-15 Communications Manual (without F18 Key)

CRC®-15 Series
Communications

OWNER’S MANUAL

Capintec, Inc.
Sales and Marketing
and Customer Support

6 Arrow Road
Ramsey, NJ 07446
Phone (800) ASK-4CRC
Fax (201) 825-1336

Capintec, Inc.
Service Center
620 Alpha Drive
Pittsburgh, PA 15238
Phone (800) 227-6832
Fax (412) 963-0610

Copyright© 2002 Capintec, Inc.

®CRC is a registered trademark of Capintec, Inc.
U.S. Patents - 3,748,476 and 3,840,745
ALL RIGHTS RESERVED

Manual Stock No. 9250-0096

Rev. D – June 2006



CAPINTEC, INC CRC®-15 Series Communications

TABLE OF CONTENTS

INTRODUCTION ...................................................................................................................... 3

INSTALLING THE SOFTWARE ..............................................................................................5

CONNECTING THE CALIBRATOR ........................................................................................9

LICENSING ............................................................................................................................ 11

STARTING THE PROGAM....................................................................................................13
Data Acquisition..................................................................................................................13
Repeated Acquisition..........................................................................................................14
Maximum Activity Acquisition .............................................................................................14
Setup ..................................................................................................................................14

PROGRAM SETUP................................................................................................................15
Report Header Frame.........................................................................................................15
Calibrator Frame.................................................................................................................15
License Frame ....................................................................................................................16
Entering the License .......................................................................................................16
Communications Port Frame ..............................................................................................16
Exiting Program Setup........................................................................................................16

DATA ACQUISITION.............................................................................................................17
Standard Data Acquisition Screen......................................................................................17
Enhanced Data Acquisition Screen ....................................................................................18
User Key Names .............................................................................................................18
Changing Isotope ............................................................................................................19
Update User Keys ...........................................................................................................19
CRC®-15PET Dual Chamber Data Acquisition Screen ......................................................19
Select Chamber Frame ...................................................................................................19
Saving Data ........................................................................................................................20
Printing ...............................................................................................................................20
Exporting............................................................................................................................. 20
Exiting Data Acquisition ......................................................................................................21

REPEATED ACQUISITION ...................................................................................................23
Setup for Repeated Acquisition ..........................................................................................23
Entering Interval ..............................................................................................................24
Number of Measurements...............................................................................................24
Exiting Repeated Acquisition Setup ................................................................................24
Starting Repeated Acquisition ............................................................................................24
Canceling Repeated Acquisition.........................................................................................25
Printing ...............................................................................................................................25
Exporting............................................................................................................................. 25
Exiting Repeated Acquisition ..............................................................................................26

December 03 1

CAPINTEC, INC CRC®-15 Series Communications

MAXIMUM ACTIVITY ACQUISITION ................................................................................... 27
Setup for Maximum Activity Acquisition ............................................................................. 27
Entering Interval.............................................................................................................. 28
Exiting Maximum Activity Setup...................................................................................... 28
Starting Maximum Activity Acquisition................................................................................ 28
Stopping Maximum Activity Acquisition.............................................................................. 28
Printing ............................................................................................................................... 29
Exporting ............................................................................................................................ 29
Exiting Maximum Activity Acquisition ................................................................................. 30

IMPORTING A FILE INTO EXCEL........................................................................................ 31

INDEX .................................................................................................................................... 35

NEW PRODUCT WARRANTY .............................................................................................. 37

2 December, 03

CAPINTEC, INC CRC®-15 Series Communications

INTRODUCTION

The CRC®-15 Series Communications Program will communicate with the following
calibrators that have the RS-232 option installed:

• CRC®-15R, CRC®-15R Enhanced,
• CRC®-15PET, CRC®-15PET Enhanced
• CRC®-15 Dual PET
• CRC®-15BT

It will also communicate with the calibrator portion of the following calibrators that have the
RS-232 option installed:

• CRC®-15 Beta, CRC®-15 Beta Enhanced
• CRC®-15W, CRC®-15W Enhanced

The functions supported by each calibrator are given in the table below.

Function 15R 15R Enhanced 15PET 15 15BT
Data Acquisition 15PET 15Beta Enhanced Enhanced Dual n
15Beta PET
Select Isotope 15W 15W Enhanced n
Acquire and Store Data n n
Daily Test n n n n
Repeated Acquisition n n n
Maximum Activity Acquisition n n n
Chamber Selection n n
n

December 03 3



CAPINTEC, INC CRC®-15 Series Communications

INSTALLING THE SOFTWARE

Note: Before proceeding, it is recommended that you close any applications you may be
running. Setup cannot install system files or update shared files if they are in use.

Insert the CRC®-15 Series Communications CD into your CD drive.
The CD is self-starting. If it does not start, perform the following steps:

Select Run… from the Start Menu.
Click the Browse… button.
From the Look in: drop-down list, select Communications (CD Drive).
Click on the file setup.exe to select it.
Click the Open button.
Click the OK button.
The CRC®-15 Series Communications Setup window appears as shown in Figure 1.

Figure 1

Click the button to continue the installation. Click the button to
button to cancel
cancel the installation.

Click the button to begin the installation. Click the

the installation.

Figure 2

December 03 5

CAPINTEC, INC CRC®-15 Series Communications

The CRC®-15 Series Communications – Choose Program Group Window appears.

Figure 3

Click the button to continue the installation. Click the button to

cancel the installation.

The Program begins to run through its setup procedure.

Figure 4 button.
Once Setup is completed successfully, click the

Figure 5
After the installation is complete, click the Start Menu, Programs, right-click on the CRC-15
Series Communications icon and select Create Shortcut.

6 December, 03

CAPINTEC, INC CRC®-15 Series Communications

Figure 6
Drag one of the shortcuts to the Desktop.

Figure 7

Restart the computer.

December 03 7



CAPINTEC, INC CRC®-15 Series Communications

CONNECTING THE CALIBRATOR

Connect one end of the cable to the RS-232 port on the rear panel of the Calibrator.
Connect the other end of the cable to the Serial (Comm) port of the computer.

The calibrator must be connected to the PC and on the chamber measurement screen when
entering setup.

December 03 9



CAPINTEC, INC CRC®-15 Series Communications

LICENSING

Until you have purchased a license for the program, the program will run in Demonstration
Mode.

The program will operate as if connected to a CRC®-15R Enhanced Calibrator but no
measurements can be obtained from a calibrator and no data can be saved, printed or
exported.

A pre-determined isotope and activity will be displayed.

December 03 11



CAPINTEC, INC CRC®-15 Series Communications

STARTING THE PROGRAM

Double-click the desktop icon created during the installation procedure to start the

CRC®-15 Communications program.

The Main Screen is shown in Figure 8. All functions are accessed from the Main Screen.

Figure 8 Main Screen

From the Main screen, the following functions can be accessed:

• Data Acquisition
• Repeated Acquisition
• Maximum Activity Acquisition
• Setup

Note: The Repeated Acquisition and the Maximum Activity Acquisition buttons are inactive
(grayed out) on the Main Screen for the CRC®-15BT Calibrator.

Data Acquisition
The activity and isotope are displayed and updated every second. Selected measurements
may be saved and saved data may be printed or exported to Excel.

December 03 13

CAPINTEC, INC CRC®-15 Series Communications

If your calibrator is a CRC®-15R Enhanced, CRC®-15 Beta Enhanced or CRC®-15W
Enhanced, the Isotope and User keys will be displayed on the Data Acquisition screen. The
isotope may be changed from the PC and the User keys will display the assigned isotope (for
any other calibrator, the Isotope and User keys are not shown).

If your calibrator is a CRC®-15R Enhanced, CRC®-15 Beta Enhanced, CRC®-15W Enhanced
or CRC®-15PET Enhanced, the Data Acquisition function can also display the readings from
the following tests:

• Daily (which consists of the Zero, Background, System, Accuracy and Constancy
tests)

• System
• Accuracy
• Background

The readings are displayed and updated every second.

Repeated Acquisition
Note: Repeated Acquisition is not available for the CRC®-15BT Calibrator.

The isotope and activity are displayed and updated at time intervals set by the user and for
the number of measurements set by the user. The data for each interval are automatically
saved and may be printed or exported to Excel.

Maximum Activity Acquisition
Note: Maximum Activity Acquisition is not available for the CRC®-15BT Calibrator.

The isotope and activity are displayed and updated at time intervals set by the user. The
maximum activity will also be displayed. The data acquisition must be stopped by the user.
The maximum activity will be automatically saved and may be printed or exported to Excel.

Setup

Used to select the calibrator, select the communications port that the calibrator is connected
to and enter the information to be included on the report headers. The License Request
Form is generated here and License information is entered here.

14 December, 03

CAPINTEC, INC CRC®-15 Series Communications

PROGRAM SETUP button. The Setup screen appears as

From the Main screen, click the
shown in Figure 9.

Figure 9 Setup Screen

Report Header Frame
Up to 40 characters per line may be entered in these 5 fields. The Report Header will be
printed on all of the reports.

Calibrator Frame
Click the appropriate radio button for your calibrator. An Activation Code will appear in the
License frame at the top of the screen.

For a Standard calibrator (15R, 15W, 15Beta, 15PET, 15PET Enhanced, 15PET Dual
Chamber, 15BT) the Activation Code is related to your computer. The Serial Number box
will be grayed out and blank.

December 03 15

CAPINTEC, INC CRC®-15 Series Communications

For an Enhanced calibrator (15R Enhanced, 15W Enhanced, 15Beta Enhanced) the
Activation Code is the last 4 digits of the calibrator serial number. The Serial Number box
will display the serial number of the calibrator.

Note: Remember that the program only communicates with the calibrator portion of the
CRC®-15Beta, CRC®-15Beta Enhanced, CRC®-15W and CRC®-15W Enhanced.

License Frame

After the Calibrator has been selected, the License Request Form button will be enabled.

Click the button to print a form containing the information necessary to

obtain a license. Contact the Capintec Sales department at 1-800-631-3826 to order your

license. You will be given a License code that will work only with your computer/calibrator.

Note: A printer attached to your computer is required to obtain the License Request Form.

Entering the License
Note: If you have exited Setup before entering the license, you will still be in
Demonstration Mode. Re-enter Setup and click the appropriate radio button
for your calibrator.

Enter the License Code making sure that you enter the License with upper case
letters. If the license is correctly entered, you will be able to obtain data from the
calibrator.

Communications Port Frame

Comm 1 is set as the default. If there is more than one RS-232 port on your computer and
you want to use another port for communications with the calibrator, select another port. The

port will be set up when the button is pressed.

Exiting Program Setup button.
button.
To exit Program Setup and save the entries, click the
To exit Program Setup without saving entries, click the

16 December, 03

CAPINTEC, INC CRC®-15 Series Communications

DATA ACQUISITION

From the Main screen, click the button. There are 3 different Data
Acquisition screens depending on your calibrator:

• Standard Data Acquisition screen (15R, 15W, 15Beta, 15PET, 15PET Enhanced,
15BT) shown in Figure 10.

• Enhanced Data Acquisition screen (15R Enhanced, 15W Enhanced, 15Beta
Enhanced,) shown in Figure 11.

• CRC®-15PET Dual Chamber Data Acquisition screen (15PET Dual Chamber) shown
in Figure 12.

Note: Remember that the program only communicates with the calibrator portion of the
CRC®-15Beta, CRC®-15Beta Enhanced, CRC®-15W and CRC®-15W Enhanced.

The isotope and activity are automatically acquired every second. Data Acquisition begins
when the Data Acquisition screen is displayed. The current calibrator reading is displayed.

Standard Data Acquisition Screen

The Standard Data Acquisition screen is displayed when using one the following calibrators:
CRC®-15R, CRC®-15W, CRC®-15Beta, CRC®-15PET, CRC®-15PET Enhanced and CRC®-
15BT.

Figure 10 Standard Data Acquisition Screen 17

December 03

CAPINTEC, INC CRC®-15 Series Communications

Enhanced Data Acquisition Screen

The Enhanced Data Acquisition screen is displayed when using one the following calibrators:
CRC®-15R Enhanced, CRC®-15W Enhanced and CRC®-15Beta Enhanced.

The Enhanced Data Acquisition function can also display readings from the following tests:

• Daily (which consists of the Zero, Background, System, Accuracy and Constancy
tests)

• System
• Accuracy
• Background

Figure 11 Enhanced Data Acquisition Screen
User Key Names

When the Enhanced Data Acquisition screen is accessed, the Calibrator sends the
names of the isotopes assigned to the User Keys to the PC. These names are
displayed on the User keys on the Enhanced Data Acquisition screen. If a User Key
does not have an isotope assigned to it, the key will not be active (grayed out).

18 December, 03

CAPINTEC, INC CRC®-15 Series Communications

Changing Isotope

The isotope on the calibrator can be changed from the PC program by clicking one of
the Pre-Set Isotope keys or a User key shown on the Enhanced Data Acquisition
screen. The data for the new isotope will be displayed.

Update User Keys

If the assignment for any User key on the calibrator is changed, click the button

so that the User keys on the PC program will reflect the assignments on the

calibrator.

CRC®-15PET Dual Chamber Data Acquisition Screen
The CRC®-15PET Dual Chamber Data Acquisition screen is displayed when using the
CRC®-15PET Dual Chamber Calibrator.

The activity and isotope are automatically acquired every second for the selected chamber.

Figure 12 CRC®-15PET Dual Chamber Data Acquisition Screen

Select Chamber Frame
To change the chamber being read, click on the appropriate radio button for Chamber
#1 or #2.

December 03 19

CAPINTEC, INC CRC®-15 Series Communications

Saving Data

To save data for printing or exporting, click the button. The data will appear in the

Saved Isotope and Activity boxes at the top of the screen.

Each time the button is pressed, the current data is added to the previously saved
data.

Once the button is pressed, the saved data is erased.

If you wish to retain the saved data, you must either print it or export it to a file. The

and buttons will become active after the button is

pressed.

Printing button is not active until the button is pressed.
Note: The

Click the button for a printout of the saved data. After printing, you will be

asked if you want to retain the data. Click the button to retain the data.

If the button is pressed, all saved data will be erased and the

button will become inactive.

Exporting button is not active until the button is pressed.
Note: The

Click the button to create a file of the saved data that may be used in Excel or

a similar program. (The default save folder is C:\CRC-15 Series Communications\Data. The

default file extension is .xls) The “Default Extension is xls” screen appears as shown in

Figure 13.

20 December, 03

CAPINTEC, INC CRC®-15 Series Communications

Figure 13 Default Extension is xls Screen

Type a name in the File name: drop-own box and press the button.

After exporting, you will be asked if you want to retain the data. Click the button
to retain the data.

If the button is pressed, all saved data will be erased and the

button will become inactive..

Exiting Data Acquisition

Click the button or press the Esc key to exit the Data Acquisition screen.

All saved data will be erased upon exiting the Data Acquisition screen.

December 03 21



CAPINTEC, INC CRC®-15 Series Communications

REPEATED ACQUISITION

Note: Repeated Acquisition is not available for the CRC®-15BT Calibrator.

Note: Remember that the program only communicates with the calibrator portion of the
CRC®-15Beta, CRC®-15Beta Enhanced, CRC®-15W and CRC®-15W Enhanced.

From the Main screen, click the button. The Repeated Acquisition
screen appears as shown in Figure 14.

Repeated Acquisition is used to acquire data at a constant time interval for a given number of
measurements.

Note: The Repeated Acquisition screen for the CRC®-15PET Dual Chamber Calibrator
contains a Select Chamber Frame used to change the chamber being read; click the
appropriate radio button for Chamber #1 or #2.

Standard/Enhanced CRC®-15PET Dual Chamber

Figure 14 Repeated Acquisition Screen

Setup for Repeated Acquisition

Click the button to bring up the Repeated Acquisition Setup Screen as shown in
Figure 15.

The Setup screen is used for entering the parameters needed to acquire repeated data.

December 03 23

CAPINTEC, INC CRC®-15 Series Communications

Figure 15 Repeated Acquisition Setup Screen

Entering Interval
The default value for the interval between measurements is 1 second.

To change this value, enter the desired interval in seconds, minutes or hours (integral
seconds, minutes or hours only).

Number of Measurements

Enter the desired number of measurements. The Total Acquisition time will then be
displayed.

Exiting Repeated Acquisition Setup

Click the button to exit Repeated Acquisition Setup and save the values.

Click the button to exit Repeated Acquisition Setup without saving the
values.

Starting Repeated Acquisition

Click the button to begin the acquisition.

Data is read from the calibrator at the requested interval for the requested number of
measurements. The Isotope, Activity and Acquisition number are displayed. When the
acquisition is complete, the time, Isotope and Activity for each measurement are saved for

output and the and buttons become active.

24 December, 03

CAPINTEC, INC CRC®-15 Series Communications

Canceling Repeated Acquisition

Click the button to stop the acquisition before all the requested measurements
have been made.

Printing

Click the button for a printout of the measurements. After printing, you will be

asked if you want to retain the data. Click the button to retain the data.

If the button is pressed, all saved data will be erased and the

button will become inactive.

Exporting

Click the button to create a file of the measurements that may be used in

Excel or a similar program. (The default save folder is C:\CRC-15 Series

Communications\Data. The default file extension is .xls) The “Default Extension is xls”

screen appears as shown in Figure 16.

Figure 16 Default Extension is xls Screen

Type a name in the File name: drop-own box and press the button.

After exporting, you will be asked if you want to retain the data. Click the button
to retain the data.

December 03 25

CAPINTEC, INC CRC®-15 Series Communications

If the button is pressed, all saved data will be erased and the

button will become inactive.

Exiting Repeated Acquisition

Click the button or press the Esc key to exit the Repeated Acquisition screen.

All saved data will be erased upon exiting the Repeated Acquisition screen.

26 December, 03

CAPINTEC, INC CRC®-15 Series Communications

MAXIMUM ACTIVITY ACQUISITION

Note: Maximum Activity Acquisition is not available for the CRC®-15BT Calibrator.

Note: Remember that the program only communicates with the calibrator portion of the
CRC®-15Beta, CRC®-15Beta Enhanced, CRC®-15W and CRC®-15W Enhanced.

From the Main screen, click the button. The Maximum Activity

Acquisition screen appears as shown in Figure 17.

Maximum Activity Acquisition is used to perform repeated data acquisitions and save the
maximum activity for the set acquisition time period.

Note: The Maximum Activity Acquisition screen for the CRC®-15PET Dual Chamber
Calibrator contains a Select Chamber Frame used to change the chamber being
read; click the appropriate radio button for Chamber #1 or #2.

Standard/Enhanced CRC®-15PET Dual Chamber

Figure 17 Maximum Activity Acquisition Screen

Setup for Maximum Activity Acquisition

Click the button to bring up the Maximum Activity Acquisition Setup Screen as

shown in Figure 18.

December 03 27

CAPINTEC, INC CRC®-15 Series Communications

Figure 18 Maximum Activity Setup Screen

Entering Interval
The default value for the interval between measurements is 1 second.

To change this value, enter the desired interval in seconds (integral seconds only)

Exiting Maximum Activity Setup

Click the button to exit Maximum Activity Setup and save the values.

Click the button to exit Maximum Activity Setup without saving the
values.

Starting Maximum Activity Acquisition

Click the button to begin the acquisition.

Data will be read from the chamber at the requested interval. The Isotope, Maximum Activity
since the data acquisition began and the Current Activity will be displayed. The Run Time
(time since the data acquisition began) will also be displayed.

Stopping Maximum Activity Acquisition

Click the button to terminate the Maximum Activity Acquisition and save the
maximum activity.

28 December, 03

CAPINTEC, INC CRC®-15 Series Communications

Printing

Click the button for a printout of the maximum activity for each set of

measurements. After printing, you will be asked if you want to retain the data. Click the

button to retain the data.

If the button is pressed, all saved data will be erased and the

button will become inactive.

Exporting

Click the button to create a file of the maximum activities that may be used in

Excel or a similar program. (The default save folder is C:\CRC-15 Series

Communications\Data. The default file extension is .xls) The “Default Extension is xls”

screen appears as shown in Figure 19.

Figure 19 Default Extension is xls Screen

Type a name in the File name: drop-own box and press the button.

After exporting, you will be asked if you want to retain the data. Click the button
to retain the data.

If the button is pressed, all saved data will be erased and the

button will become inactive.

December 03 29

CAPINTEC, INC CRC®-15 Series Communications

Exiting Maximum Activity Acquisition

Click the button or press the Esc key to exit the Maximum Activity Acquisition
screen.

All saved data will be erased upon exiting the Repeated Acquisition screen.

30 December, 03

CAPINTEC, INC CRC®-15 Series Communications

IMPORTING A FILE INTO EXCEL

Data that has been exported to Excel is in a format that is easy for Excel to read. However,
a few steps must be performed before accessing the data.

1. Open Excel and select the exported file (15test3.xls in the example).

Figure 20

2. Verify that the Delimited radio button is selected and the File origin: drop-down box is

set to Windows (ANSI). Click the button.

Figure 21

December 03 31

CAPINTEC, INC CRC®-15 Series Communications

3. Verify that the options are set as above. Click the button.

4. Click the Figure 22
button. The spreadsheet will appear.

Figure 23
5. If you want a heading for the data, highlight the first row and select Rows from the

Insert Menu.

32 December, 03

CAPINTEC, INC CRC®-15 Series Communications

Figure 24
6. Type the heading in the row that is opened in front of the current row 1.

Figure 25

December 03 33



CAPINTEC, INC CRC®-15 Series Communications

INDEX

C L
Calibrator Frame, 15 License, 11
Calibrator Functions, 3
Changing Isotope, 19 entering, 16
Communications Port, 16 obtaining, 16
Connection
M
Calibrator, 9 Maximum Activity Acquisition, 14, 27

D Entering Interval, 28
Data Acquisition, 13, 17 Exiting, 30
Exiting Setup, 28
CRC®-15PET Dual Chamber screen, 19 Exporting, 29
Enhanced screen, 18 Printing, 29
Exiting, 21 Setup, 27
Exporting, 20 Starting, 28
Printing, 20 Stopping, 28
Saving Data, 20
Standard screen, 17 N
Demo Mode, 11 Number of Measurements, 24

E P
Excel Printing

Importing a file, 31 Data Acquisition, 20
Exiting Maximum Activity Acquisition, 29
Repeated Acquisition, 25
Data Acquisition, 21 Program Setup, 15
Maximum Activity Acquisition, 30 Program Setup
Maximum Activity Acquisition Setup, 28 exiting, 16
Program Setup, 16
Repeated Acquisition Setup, 24 R
Exporting Repeated Acquisition, 14, 23
Data Acquisition, 20
Maximum Activity Acquisition, 29 Canceling, 25
Repeated Acquisition, 25 Entering Interval, 24
Exiting, 26
F exiting setup, 24
Functions Exporting, 25
Number of Measurements, 24
Calibrator, 3 Printing, 25
Program, 13 Setup, 23
Starting, 24
I Report Header, 15
Importing to Excel, 31
Installation, 5 S
Interval Saving Data

entering, 24, 28 Data Acquisition, 20
Select Chamber Frame, 19, 23, 27
December 03
35

CAPINTEC, INC CRC®-15 Series Communications

Setup, 14 U
Maximum Activity Acquisition, 27 User Key
Program, 15
Repeated Acquisition, 23 Names, 18
Update, 19
Starting the Program, 13

36 INDEX December 03

NEW PRODUCT WARRANTY

Conditions and Limitations

CAPINTEC warrants our products to be free from defects in material and
workmanship for a period of 12 months after delivery to the original buyer
(unless indicated otherwise). Our obligation under this warranty is
limited to servicing or adjusting products returned to our factory for that
purpose promptly upon any claim under this warranty, provided our
examination discloses to our satisfaction that the affected parts were
originally defective and have not been subjected to misuse, abuse,
mishandling or improper operation. This warranty extends to every part
of the product except batteries, fuses, ink, magnetic storage media,
toner, transistors, tubes or any other normally consumable item. In no
event shall we liable for transportation, installation, adjustment or any
other expenses which may arise in connection with such products or
their servicing or adjustment.

This warranty is expressly in lieu of any other express or implied
warranties, and we make no warranty that the products sold herein are
merchantable or are suitable for any particular purpose. The benefits of
this warranty shall extend only to the buyer and to none other. We shall
have no liability of any nature arising out of the use or application of the
product in conformity with this warranty. If the product shall fail to
perform in conformity with the warranty made herein, we shall be liable
solely for the repair and replacement of the product as provided
hereinabove, and shall have no other liability in respect of such failure or
performance, or any consequences therefrom, including, without
limitation, business impairment or loss, personal injury or property
damage.

No agent, employee, or representative of ours has any authority to bind
us to any representation or warranty concerning the product sold herein,
and unless a representation or warranty made by an agent, employee or
representative is specifically included herein, it shall not be enforceable
by the buyer. No waiver, alteration or modification of the foregoing
conditions shall be valid, unless made in writing and signed by an
executive officer of our corporation.


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