Form 37714 Rev 1809
Page 8 of 13
Set Up/Sample with Multiple Tubes
• Requires Constant Pressure Controller (CPC) and Adjustable Low Flow Tube Holder (see Accessories). The low
fl
ow tube holder used with CPC
allows up to four tube samples to be taken simultaneously, each at different
fl
ow rates if desired.
• Allow pump to equilibrate after moving it from one temperature extreme to another.
• Protect sample pump from weather when sampling outdoors.
• Use of any device or battery pack other than P85004 or P84002 to power the pump voids the UL Listing for intrinsic safety.
• Charge pump 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 representative sorbent tubes used for calibration with new unexposed sorbent tubes for sample
collection.
2. Place a protective tube cover over each tube and thread into place on holder until secure.
3. Place the adjustable holder with tubes where appropriate for sampling.
For personal sampling,
clip the low
fl
ow tube holder to the worker in the breathing zone and the pump to the worker’s belt.
4.
Press the on/o
ff
bu
tt
on to clear the elapsed time displayed on the LCD and to start sampling. Record the start time
and other pertinent information. Sample for the time speci
fi
ed in the method used. The LCD will automatically
display elapsed run time.
Possible Displays During Sampling
Flow or Ba
tt
ery Fault Shutdown -
If the pump is unable to compensate due to excessive back pressure or a low ba
tt
ery
condition exists, it will shut down and timing functions will pause. The LCD will display either a ba
tt
ery-shaped icon
or a
fl
ow fault icon (
) depending on the cause of the shutdown. Upon
fl
ow fault, the pump will a
tt
empt to restart up
to
fi
ve times. To restart from
fl
ow fault, correct the blockage and press the on/o
ff
bu
tt
on twice.
The elapsed run time
display will reset to 0 when the pump is restarted.
If the ba
tt
ery icon is displayed, recharge the ba
tt
ery before sampling.
Displayed Elapsed Run Time -
Elapsed run time is displayed continuously on the LCD. For elapsed times after 999
minutes, the display still shows elapsed time but alternates between displaying the
fi
rst two digits of the elapsed time
and the last three digits. For example, a pump that has run for 1,440 minutes would display
fi
rst “01” and then “440.”
The display maximum is 99 999, which is 99,999 minutes.
5. At the end of the sampling period, press the on/o
ff
bu
tt
on and record stop time.
6. Cap the sample tubes and send with blanks and pertinent sampling information to a laboratory for analysis.
7. Verify
the
fl
ow.
a. Turn on the pump and reinstate the calibration train and sample 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%.
Clip tube holder to
worker and pump
to belt.
