Rev. B | 2022.09
cGas Ammonia Vent Line Transmitter - Addendum
© 2022 All rights reserved. Data subject to change without notice.
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4 INSTALLATION
The cGas Ammonia Vent Line Detector is intended to be permanently mounted indoors on
the ammonia vent relief stack above the pressure relief valve.
If the device is not installed within two weeks of delivery, the sensor may require a longer
warm up time to stabilize (approximately 48 hours) and provide accurate readings.
The cGas Ammonia Vent Line Detector should be installed on the vent stack pipe using the
cast steel coupler, no more than 0.3 to 0.6 m / 1 to 2 ft from the discharge stack.
The bottom conduit entry point on the enclosure has been fitted with a 12.7 mm / ½ in
water tight cable restraint. If conduit is being used, replace the cable restraint with a liquid
tight type conduit fitting. The clearance from the PCA to the base enclosure is 12.7 mm /
½ in. Do not use a conduit connector that has more than 12.7 mm / ½ in of thread length.
If the transmitter must be installed outdoors, it is suggested to use weather proof and UV
protected cable and additional housing to protect it from the elements and low temperatures.
The factory installed splash guard that covers the (unused) sensor vent in the front of the
enclosure protects the device from water and dust ingress. Any water or physical damage
to the transmitter that occurs from the installer drilling installation holes will not be covered
under warranty. If using, the conduit fitting at the bottom of the enclosure, it must be the
liquid tight type.
FOR MORE INFORMATION ON INSTALLATION INCLUDING WIRING CONNECTIONS, WIRE
GAUGE AND RUN LENGTH REFER TO THE
OR THE
NOTE:
CETCI suggests that upon power-up, all sensors be left to warm up for 24 hours prior
to considering the gas readings to be accurate.
NOTE:
All sensors are calibrated in the factory before they are shipped and should not require
calibration at the time of a routine installation or replacement.
NOTE:
Temperature affects calibration. It is important to ensure the gas is at the appropriate
temperature during calibration. If the sensor is being used in an extreme temperature range,
calibration should be done in that same temperature range.
5 CALIBRATION
The cGas Ammonia Vent Line Detector is an equipment protection device, not a life safety
device and should be calibrated every 6 months.
Calibrating the cGas Ammonia Vent Line Detector has 5 processes:
1.
Remove Detector from Vent Stack
2. Set Calibration Gas Value
3.
Attach Calibration Adapter and Tubing
4. Zero (Null) Calibration
5. Span Calibration
