Form 37714 Rev 1809
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
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 tube used for calibrating
fl
ow with a new unexposed sorbent tube for
sample collection.
Note:
Ensure sorbent tube
fi
ts snugly in rubber sleeve of the All-in-One before sampling to avoid
any air leakage. Two sleeves, each a di
ff
erent 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
fl
ow 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/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. The LCD will automatically display elapsed run time.
See below.
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 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
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%.
Figure 2.
All-in-One Low Flow Holder Connected to AirChek 52
in One Low Flow Holder Conn
Flow adjust screw
(needle valve)
Threaded
fi
tting
All-in-One
rubber sleeve
Built-in CPC
Tygon tubing
Pump
inlet
