Teledyne Refrigerated Sampler 6712FR - Manual (Page 71)

6712FR Refrigerated Sampler
Section 4 Standard Programming
4-15
Figure 4-4 Taking a Grab Sample
4.12 Calibrate Volume The sampler delivers accurate sample volumes without cali-
bration. If you find that sample volumes vary significantly from
the programmed 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 actual 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).
Taking a Grab Sample
1
GRAB SAMPLE
CALIBRATE VOLUME
OPERATE PUMP
MOVE DISTRIBUTOR
•Select GRAB SAMPLE
2
SAMPLE VOLUME:
___ ml (10-9990)
•Enter the desired volume
3
GRAB SAMPLE
PRESS ↵ WHEN READY!
4
PURGING
SUCTION LINE
5
PUMPING 200 ml
6
PURGING
SUCTION LINE
7
GRAB SAMPLE
CALIBRATE VOLUME
OPERATE PUMP
MOVE DISTRIBUTOR
•Press STOP to return to
main menu.