MRK-D-0048 V4
Aeroqual Dust Sentry / AQS User Guide
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6.5.12.1 Replacing a module with another of the same type
This can be done with the monitor power left on. There is no software change required when
removing a module.
Disconnect the vacuum and sample lines
Remove one blue communications cable and one red and black power cable
Loosen the retaining screws and remove the module
Replace the module with the new module
Reconnect the blue communication cable and black and red power cable to ensure all r
modules have power and communications.
IMPORTANT
Ensure the polarity of the red and black cable is the correct orientation.
Cap off the vacuum and sample lines using a luer cap
Remove the module from the sensor list in the software (Configure Instrument app)
Measure the total inlet flow rate and document this in the journal
6.5.12.2 Adding a new module
This can be done with the monitor power left on. There is a software change required when adding a
module.
You will need one blue communications cable and one black and red power cable.
You need 4 x 10mm M4 screws.
It may be necessary to cut in to the sample and exhaust lines in order to add additional gas fittings.
For this you will need a tube cutter,
do not use scissors.
You will also need tee fittings and luer fitting,
and tubing. It may be possible to connect a new module directly to manifold on the left side of the
enclosure.
It is important to use the PFA (CS Tube 11) for the gas sampling and Tygon (CS Tube 10) for the
exhaust (See Section 12.1.2 for a description of the sample and exhaust manifold).
It important to use the large barb tee for the exhaust tubing and the small barb tee for the sample
tubing.
Figure 6-24 Adding a new module requires adding additional sample and exhaust lines.
6.6 Factory calibration of Particle Monitor
Dust and other debris can settle upon the internal optics of the optical engine which can lead to
inaccurate readings. The laser and detector may also need to be replaced.
The Particle Monitor optical module (nephelometer) requires a factory service and calibration every
two years.
For information about factory service and calibration of the Particle Monitor, please check with the
Aeroqual distributor nearest to you.