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248083447-1 Rev 1
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Introduction
Overview
This operating manual introduces the Lighthouse
Apex
Remote
family of
PoE
and
Serial
models of Airborne Particle Counters and
includes instructions for inspecting, installing, using and maintaining
the instrument.
Description
The
Apex
Remote
instrument comes standard with two particle-size
channels based on channel sizes ordered and one of two flow rates of
0.1 or 1.0 CFM. Optionally, the
Apex
Remote
can be shipped with up
to four particle-size channels. Figure 2-1 shows the standard
configuration as well as the optional display configuration. Table 2-1
lists features and specifics about the
Apex
Remote
.
Figure 2-1
Apex
Remote
Airborne Particle Counter
The instrument uses a LASER diode light source and LASER beam
shaping optics to illuminate a cross section of the air flow path. As
particles move along this path, they cross the LASER beam and scatter
light. The light scattered is collected by an optical imaging system onto
a photodiode. The photodiode converts the image into a current which
is converted to a voltage and amplified by an electronic circuit.
The result is the electronic circuit outputs a voltage pulse each time a
particle crosses the LASER beam. The amplitude of the voltage pulse
is proportional to the light scattered which in turn is proportional to the
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