Form 37712 Rev 1702
Page 7 of 14
Low Flow Applications, Single Tube (Cont)
Set Up/Sample
• Allow pump to equilibrate after moving it from one temperature extreme to another.
• Protect sample pump from weather when in use outdoors.
• Powering the pump with any device other than the approved battery pack voids the UL Listing for intrinsic safety.
• Do not use the pump with the Battery Eliminator in hazardous locations. UL Listing for intrinsic safety is not in
effect during pump operation with Battery Eliminator.
• Use of any device other than the approved battery pack or Battery Eliminator to power the pump voids any
warranty.
• Charge pump battery completely before calibration and sampling.
• Calibrate/verify pump
fl
ow rate before and after each sampling operation using the tube holder and pump to be used for sampling.
1. Replace the sorbent tube used to set the
fl
ow with a new unexposed sorbent tube for sample collection.
2. Place the appropriate size protective tube cover over the tube, and screw it into place on the tube holder.
For personal sampling,
clip the tube holder to the worker in the breathing zone.
See above right
.
3.
While the LCD displays HOLD, start sampling by pressing Start/Hold (SAMPLE RUNNING will be displayed)
(Figure 2)
, and record
the start time.
4. At the end of the sampling period, press Start/Hold and record the stop time.
5. Seal the sample and send it with blanks and pertinent sampling information to a laboratory for analysis.
6. Verify
the
fl
ow.
a. Press Start/Hold to activate the pump and reinstate the calibration train and sampling media.
b. Take three readings and record the average value as the post-sample
fl
ow rate.
Do not adjust the pump
fl
ow rate during this step.
c. Compare the pre and post-sample
fl
ow rates. Note in sampling documentation if the values di
ff
er by more than ± 5%.
7. To return to high
fl
ow, remove the tube holder and deactivate the regulator.
See Deactivate the Regulator for High Flow.
Note:
See User Options During Sampling under High Flow Applications - Set Up/Sample.
Clip holder to worker and
pump to belt.
