ISCO 6700SR, Instruction Manual, Page: 84 / 190

6700SR Refrigerated Sampler
66
Calibrating
The sampler delivers accurate sample volumes without calibration.
If you find that sample volumes vary significantly from the pro-
grammed values, first check the suction line for proper installation.
Be sure it slopes continuously downhill to the liquid source and
drains completely after each sampling cycle. Then, compare the ac-
tual length of the suction line to the suction line length settings in
the program to see that they match. Also check the pump tube for
excessive wear and replace it if necessary.
You may want to calibrate when:
• A new pump tube is installed. Run the pump for five minutes
before calibrating.
• The sample source is above the sampler.
• Sampling from pressurized lines (15 PSI Maximum).
Calibration Tips
• For the best results, calibrate the sampler after it’s installed on
site.
• Use a graduated cylinder for volume measurement.
• The sampler clears the previous calibration setting when you
reinitialize the sampler.
• You cannot calibrate while the sampler is running a program.
• When the sampler delivers the sample, it runs through a com-
plete sampling cycle, using the current settings for volume line
rinses and retries. If it is a two part program, the sampler uses
the volume setting for part A.
To calibrate:
1. Disconnect the pump tube from the bulkhead fitting.
2. Place the end of the tube over a collection container.
3. Follow the steps in Calibrating Sample Volumes in the
margin.
4. Reconnect the pump tube to the bulkhead fitting.
Calibrating Sample Volumes
1
RUN
PROGRAM
VIEW REPORT
OTHER FUNCTIONS
• Select OTHER FUNCTIONS
2
MAINTENANCE
MANUAL FUNCTIONS
MODULE
HARDWARE
• Select MANUAL FUNCTIONS
3
GRAB SAMPLE
CALIBRATE VOLUME
OPERATE PUMP
MOVE DISTRIBUTOR
• Select CALIBRATE VOLUME
4
SAMPLE VOLUME:
___ ml (10-9990)
• Enter the desired volume
5
CALIBRATE VOLUME
PRESS
↵
WHEN READY!
6
PURGING
SUCTION LINE
7
PUMPING 200 ml
8
PURGING
SUCTION LINE
9
VOLUME DELIVERED:
____ml
• Measure the volume delivered
and enter the amount here.
10
200 ml
ARE YOU SURE?
YES NO
• This screen appears when the
amount you entered in step 8
was more than twice, or less
than half, the programmed
volume.
• Select YES when the volume
delivered matches the volume
displayed on this screen.
• Select NO to enter the volume
delivered.