User Manual

Rev. B | 2022.09 cGas Ammonia Vent Line Transmitter - Addendum

The replacement sensor comes potted in a 2” pipe with the wires attached to a Plug & Play

smart board that plugs into the main board.

The image in Section 4.3 Interior Enclosure shows the sensor installed.

NOTE: In order to remove the smart board from the interior of the enclosure, the transmitter

needs to be removed from vent stack. For instructions, see Section 5.1 Remove Detector

from Vent Stack.

Open the enclosure, remove the 3 screws connecting the smart board to the main board and

remove the smart board from the main board socket.

With the transmitter is free from the vent stack, unscrew the old sensor pipe from the back

of the transmitter and feed the old smart sensor board through the hole in the back of the

enclosure and remove the old assembly completely.

Feed the wires and new smart board through the hole in the back of the enclosure into the

interior of the transmitter and screw the new sensor pipe assembly into the back of the

transmitter and. Press smart board into the left side socket and replace the 3 screws.

IMPORTANT: The catalytic sensor is very susceptible to shock - when working with the

sensor do not hit it. Manually loosen then senso. When replacing the tting does not have

to be pressurized, so minimal tightness is all that is required.

Reattach the transmitter to the vent stack.

The replacement sensor comes pre-calibrated from the factory and should not require

calibration at the time of a replacement.

NOTE: Temperature affects calibration. If the sensor is being used in an extreme temperature

range, the sensor should be re-calibrated in that temperature range.

If the replacement sensor 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.