Form 37182 Rev 201019
Page 6 of 12
Set Up/Sample with Single Tube
Do not operate AirLite with Timer in hazardous or explosive locations. Pump is designed for applications that do not require intrinsic safety.
•
For maximum run time
insert new batteries in pump before each sampling period. If using rechargeable AA 1.2-volt NiMH batteries, expect
approximately half the run time stated for disposable batteries.
• Allow pump to equilibrate after moving it from one temperature extreme to another.
• Protect sample pump from weather when sampling outdoors.
• 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. See Figure 2.
2. Place the protective tube cover over the sorbent tube and thread it into place on the All-in-One until secure.
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 turn on the pump and start sampling. Record the start time and other pertinent
information.
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 will show the count start from 0 to 999 again.
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%.
Clip tube holder to
worker and pump
to belt.
Figure 2.
All-in-One Adjustable Tube Holder Connected to pump
Flow adjust screw
(needle valve)
Threaded fitting
All-in-One rubber sleeve
Built-in CPC
Tygon tubing
Pump
inlet
