Section 5: Integrated Gas Sampling
Airmetrics
43
Figure 5.3.
Attaching Bag Canisters and Tubing
assembly b ar.
3.
Slide canisters holding empty bags onto the bar and attach end caps.
4.
Snap on bale handle.
5.
Attach tubing from canisters to the mini q uick-connect fittings on the sampler's
6" top cap (see F igure 5.3).
Airmetrics MiniVol Users Guide
44
Airmetrics
Integrated Gas Sampling Procedure
After the s ampler has been assem bled, the p ulse frequ ency an d duration correctly
establishe d through a test run, an d a fresh b attery installe d, the sam pler is ready to
collect air samples at a field site. (See Figure G.2 insert at the end of this Manual
for a sample Integ rated Gas Field Data Sheet.)
NOTE:
If a particulate sample is being collected simultaneously, refer to Section
4, “Particulate Matter Sampling” for proper particulate sampling procedure.
1.
Transport the sampler to the field site. Verify that the sampler when installed
in the cradle will be positioned with the intake upward in an unobstructed area
at least 30 cm from any obstacle to air flow.
2.
With the sample r on a firm level surfac e, unscre w either c ap of bale assem bly
bar and remove bale assembly.
3.
Detach canister tubing at mini quick-connect fittings and remove canisters.
4.
Lift pump and timer assembly out by the 6" diameter top cap and support the
mounting board on the edge of the sampler casing, taking care not to pull the
connec ting wire lo ose or jar th e pum p hose fitting s. Hold th e control a ssemb ly
by the top cap and do NOT grasp the circuit board.
5.
Check that the Valve Driver Board is operational (Power Switch is in UP
position, Active So lenoid Outpu t Indicators on).
6.
Verify that all hose connections are secure. Check the pump by turning it on
and then off.
7.
Select the desired mode of operation (standard or overlap) with the Overlap
Jumper. Make sure that the solenoid valves are plugged into the correct output
connectors.
8.
Use the Manu al Seque nce Ad vance B utton to sele ct the requ ired chan nel.
Important Note:
The Valve Sequencing Board automatically resets when
the sampler's main power is interrupted. This is why the battery must be
changed
before
setting the s equenc ing circuit.
