Mount indoors on the ammonia vent relief stack above the pressure relief valve or mounted outside on the relief header above the roofline to help detect equipment failure
The LPT-A-VLT Ammonia Vent Line Transmitter is designed for continuous monitoring of ammonia levels in the vent line of refrigeration systems. More specifically, it is designed for the detection of equipment failure in ammonia plant vent stack applications. Using the 3/4” cast steel coupler, it can be mounted indoors on the ammonia vent relief stack above the pressure relief valve or mounted outside on the relief header above the roofline. It can be configured to alarm at user specified concentration levels and send an analog signal to the controller or PLC to activate the emergency ventilation system or shut down the equipment depending on the level of alarm.
It offers 3-wire VDC or 4-wire VAC power, jumper selectable 4 - 20 mA or 0 - 10 VDC analog output, a standard dry contact relay (2 amps @ 30 volts SPDT), automatic thermal resetting fuse, temperature compensation, back lit LCD display and audible alarm, all in a RoHS compliant package. Comes standard with a water / dust tight, corrosion resistant ABS / polycarbonate enclosure with a hinged, secured door. Calibration and other maintenance procedures are simple and easily performed in the field.
NOTE: This device is not designed to monitor ammonia in applications requiring human health safety levels detection. A large release of a high concentration of ammonia may burn out the sensor, requiring replacement of the sensor.