2–6 AEROTRAK™ Remote Airborne Particle Counters
Tubing Installation
Connecting Vacuum Tubing
For simplicity and reliability, the remote particle counter does not
include an internal pump to move particles through the
instrument. Instead, it uses a critical or sonic orifice to maintain a
steady flow of air and particles.
This requires a vacuum source from a central vacuum system or
an external vacuum pump capable of delivering at least 15 inches
of Mercury (15 inHg) at the outlet of the counter. The vacuum
should be confirmed using an external vacuum gauge.
Connect the vacuum tubing to the particle counter at the vacuum
inlet shown in the figure below. This requires 3/8 in OD thick
walled tubing.
Vacuum Tubing
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