Ammonia Detector-Transmitter

  • Long-life electrochemical gas sensor
  • Ranges 0...100, 0...300, 0...1000 ppm NH3
  • Attached or remote sensor
  • 2 × 4-20 mA / 0-10 V, RS485
  • Two SPST relays


Ammonia detector-transmitter E2638R-NH3 is a member of new PluraSens® family of multifunctional measurement instruments.

The instrument is intended for leakage control in refrigeration facilities, warehouses etc. It is not recommended to use the detector in spaces with constantly high ammonia concentration such as cattle, pig and poultry livestock houses, since it shortens the sensor lifetime. For air quality control in agriculture see E2608-NH3-S or E2638R-NH3-S.

The instrument utilises novel fully calibrated and temperature compensated electrochemical gas sensor with excellent repeatability, stability and long lifetime. 

Analog output and RS485 digital interface with industry standard Modbus RTU protocol can be used to connect the device to safety or building automation systems.

Two relays with closing contact may be used for remote signaling or ventilation control.  The flashing LEDs and an internal buzzer give alarms as well at two set-points.