The AST-IRT series are rugged, reliable analog transmitters with infrared sensors to detect a wide range of refrigerant gases including Ammonia. Specific, accurate response eliminates the false alarms that solid-state sensors can cause.

AST-IRT transmitters output a linear 4 - 20 mA signal that can be sent to a CET controller or building automation system.

Use with any of Critical Environment Technology's family of controllers: MAC, PAC or PDC.

The standard housing is rugged aluminum and an optional watertight ABS fiberglass housing is available to suit different applications.

Simple one button calibration is easily performed in the field.

Accurate, stable IR sensor For most Refrigerants and Ammonia