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Aeroqual AQM60 User Guide
If the flow does not drop to zero it suggests there is a leak somewhere in the system. To check the pump
module:
Keep the purge line disconnected.
Remove the sample connection and cap off the module sample port.
Connect the exhaust port of the module to the pressure end of a flow meter.
The flow should drop to zero.
If there is a leak in the pump module the module will need to be sent back to the Aeroqual factory. Please
contact technical support.
If there is no leak in the pump module check the tubing and connectors along the flow path carefully. If you
cannot isolate the leak it is likely the leak is located in the engine. In this case, the engine will need to be
sent back to the Aeroqual factory. Please contact technical support.
7.4.5. Manual Zero Air Check
A zero air check can also be carried out manually as a way to ensure the purge is working correctly. To do
this the TSP inlet needs to be removed and the particle filter (supplied with the instrument) needs to be
attached to the monitor. Ensure there is a good seal around the cyclone inlet.
The filter will remove 99.99% of particulates from ambient air. Wait 5 minutes and then check the readings
on the control module. The reported value should be 0 +/- 3 µg/m3. If it is not then the auto zero cycle is not
performing correctly. You will need to check the purge filter (Section 4.2.7) and replace if dirty and also
check the purge flow to make sure it is correct.
7.4.6. Fibre Span Check
Perform a manual zero air check first, then initiate the fibre span by turning the switch on the Particle Monitor
to on. The fibre span check is used to detect any major component failures such as the laser, photo detector
or lens. Wait approximately 4 minutes until the measurement value increases and record the PM10
measurement from the controller. The fibre span measurement should be within ± 20% of the fibre span
concentration noted in the logbook. If it is significantly lower, then either the module optics are dirty or the
laser is ageing. Contact Aeroqual for advice
Sample connection
(remove to check
module)
Purge connection
(remove to check
whole flow system)
Summary of Contents for AQM60
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