MRK-D-0048 V4
Aeroqual Dust Sentry / AQS User Guide
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6.5.7.2
Leak check a Particle Profiler
1. Fully open the sample valve
2. The next step is to block the purge flow:
a. For older Particle Profiler modules, disconnect the purge line and cap the purge line
and purge ports with luer caps as shown in Figure 6-16
b. For current Particle Profiler modules, pinch the tube as shown in Figure 6-17
3. Remove the TSP inlet and place the vacuum gauge on the inlet
4. Wait for the vacuum gauge to stabilise
5. Remove black and red power cable from electronics box
Figure 6-16 Original Particle Profiler Cap the purge and exhaust lines. Place the vacuum gauge on the
inlet. Disconnect the power, observe the change in pressure.
Figure 6-17 Pinch the tube with the newer Particle Profiler pump module
NOTE: The pressure change (leak rate) should be no more than 10 kPa in 10 seconds