MODEL TOX-NH3/SS36 AMMONIA SENSOR GUIDE SPECIFICATION

Provide a Toxalert Model Tox-NH₃/SS36 Ammonia (NH₃) sensor(s) to monitor for ammonia leaks. The sensor will have a range of 20 to 500 ppm (parts per million) and an analog output of 4 to 20mA over its range.

The sensing element shall be solid state metal oxide semiconductor for long life and stability.

The sensor shall be powered by 24 vdc. When the sensor detects a malfunction it shall drive its output to zero to signal the controller of a sensor failure. The sensor shall also have an LED to indicate sensor fault condition.

The sensor shall be housed in an explosion proof housing and have two meter terminal connections on the face of the unit for ease of checking unit calibration.

The ammonia leak detection system shall be as manufactured by Toxalert International, Inc. or approved by this specifying engineer.