Form 37714 Rev 2002
Page 5 of 13
Clip tube holder to
worker and pump to belt.
Low Flow Applications (Cont)
Set Up/Sample with Single Tube
• 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 other than the approved battery pack to power the pump voids the UL Listing for intrinsic safety and
any warranty.
• Charge pump completely before calibration and sampling.
• Calibrate/verify pump flow rate before and after each sampling operation using the tube holder and pump to be used for
sampling.
1. Replace the representative sorbent tube used for calibrating flow with a new unexposed sorbent tube for
sample collection.
Note:
Ensure sorbent tube fits snugly in rubber sleeve of the All-in-One before sampling to avoid
any air leakage. Two sleeves, each a different inner diameter (ID), are supplied.
2. Place the tube cover over the tube
(Figure 2)
and thread it into place on the All-in-One low flow holder.
3. Place the sorbent tube where appropriate for sampling.
For personal sampling,
clip the sample medium to
the worker in the breathing zone and the pump to the worker’s belt.
4.
Press the on/off button to clear the elapsed time displayed on the LCD and to start sampling. Record the start time and other pertinent
information. The LCD will automatically display elapsed run time.
See below.
Possible Displays During Sampling
Flow or Battery Fault Shutdown -
If the pump is unable to compensate due to excessive back pressure or a low battery
condition exists, it will shut down and timing functions will pause. The LCD will display either a battery-shaped icon
or a flow fault icon (
) depending on the cause of the shutdown. Upon flow fault, the pump will attempt to restart up
to five times. To restart from flow fault, correct the blockage and press the on/off button twice.
The elapsed run time
display will reset to 0 when the pump is restarted.
If the battery icon is displayed, recharge the battery 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 first two digits of the elapsed
time and the last three digits. For example, a pump that has run for 1,440 minutes would display first “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/off button and record stop time and other pertinent information.
6. Cap the sample tube and send it with blanks and pertinent sampling information to a laboratory for analysis.
7. Verify the flow.
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 flow rate.
Do not adjust the pump flow rate during this step.
c. Compare the pre and post-sample flow rates. Note in sampling documentation if the values differ by more than ± 5%.
Figure 2.
All-in-One Low Flow Holder Connected to AirChek 52
in One Low Flow Holder Conn
Flow adjust screw
(needle valve)
Threaded fitting
All-in-One
rubber sleeve
Built-in CPC
Tygon tubing
Pump
inlet