Technical Manual CODEL
16
5.2.1.5. When completely covered, the Vis DRx reading should drop close to 0 after a few
moments. This reading indicates that the display module and the visibility module are
communicating and operating correctly.
5.2.1.6. When communication has been established, the next stage of commissioning is
Alignment.
5.2.2. Alignment
The AQM transceiver and reflector units should be mounted horizontally and should be
properly aligned for optimum performance.
Initial alignment may be carried out by temporarily removing (but still supporting) the body
of the transceiver from its mounting bracket. Both transceiver and reflector units are
equipped with universal adjustment features at the bottom of their respective mounting
brackets.
Once the transceiver has been removed the end of the hollow clean air tube is exposed
and by looking along the clean air tube, it should be possible to see the mirror at the far
end of the reflector unit.
While observing the reflection in the mirror adjust one or both units, using the universal
adjustment feature and a suitable spanner, until the ‘circles’, formed by the inside and
outside of both clean air tubes, are concentric. When completed re-fit the transceiver
body.
Final alignment is achieved by adjusting the sensor head and reflector to obtain maximum
values of the Vis received detector signal. Note that the instrument should have had at
least half an hour to achieve stable operating conditions.
Follow the steps below within the display unit to begin alignment.
5.2.2.1. Press to return to the main display.
From the main display press to reach Diagnostics. Press to access Diagnostic
data.
.
1. Meas - 09:24:29
CO: 21 ppm
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