Tuning Detector For Less Noise - Simtronics GD1 MK3 Operating Manual

6.2.

Tuning detector for less noise

It is normal to see fluctuations of the H
the measurement. Several effects can influence the noise in the H
Alignment between RX and TX, dirt on lenses, rain, sandstorm, snow, reflections and
interference from other detectors. The interference from another detector will typically be
observed as sudden high values of H
To tune for less noise on the GD1 the alignment can be adjusted slightly, as described in
the procedure below:
# Step description
Clean the lenses of both transmitter (TX) and
receiver (RX) for any dirt before proceeding.
1 The optical path should be clear at the time of
aligning (avoid fog, mist, steam, rain, snow,
etc.).
2
Log into the service interface with Ethernet
connection or HART®.
Observe H S level and signal strength on the
2
Web Interface Status screen, or with a mA-
3 meter on terminal 7 (H
strength). It is normal for the H
fluctuate up to ± 8 ppm*m.
GD1
S signal below ± 8 ppm*m. This is due to noise in
2
S, and is described in section 6.3.
2
S signal) and 8 (signal
2
S signal to
2
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S measurement such as:
2
Illustration
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