24
© 2020 All rights reserved. Data subject to change without notice.
cGas Detector Digital Transmitter - Installation Manual
Rev. A | 2020.03
to 25°C (77°F). With the low set point you could experience false alarms.
Ammonia sensors should be left to warm up for 48 hours so the sensor can
stabilize. During calibr
ation, when fl owing span gas on an Ammonia sensor,
if the reading climbs higher than the calibration point after applying gas for 3
minutes, use that reading as the calibration point. It should be around 300 ppm.
Ozone sensors are reactive to temperature changes and will drift.
Silicone, lead and chlorinated hydrocarbon vapours can poison catalytic
sensors.
A bump test will help you determine if a sensor requires calibration. If the
sensor still does not respond as it should after a successful calibration, it
probably requires replacing.
6.2 General Safety Warnings
The cGas Detector is intended for indoor use, permanently mounted at a
height that is appropriate for the type of gas being monitored. Refer to
Section
6.5 Mounting the Transmitter
. The cGas Detector should be protected from
extreme weather conditions.
The cGas Detector requires no assembly and virtually no maintenance other
than regular calibration of the internal and/or remote sensors and ensuring
that excess water or dust not somehow entering the enclosure and physically
damaging the circuit board or internal components. There are no serviceable
elements other than the calibration instructions outlined in this manual. There
are no replaceable components except the sensors.
6.3 Protection Against Electrical Risks
Disconnect all power before servicing. There may be multiple power sources.
