Evikon E2611-NH3 Ammonia Detector Transmitter


  • Accurate and stable measurement
  • Compact housing providing optimal airflow
  • Two analog outputs settable to 4-20 mA or 0-10 V
  • Two relays for alarm / ventilation control
  • Acoustic alarm
  • RS485 Modbus RTU digital interface

Dpstar is an authorized distributor of Evikon. Evikon is an instrumentation company, specializing in the development, manufacturing, and marketing of sensor-based electronic measurement instruments for industrial and building automation applications. Our mission is to provide businesses and organizations with convenient and efficient technical solutions for the measurement of environmental parameters and control of processes – temperature, pressure, level, humidity, and moisture, toxic and explosive gases – to help save resources, increase production quality and ensure safety.

Evikon Ammonia detector E2611-NH3 is a member of new PluraSens® family of multifunctional measurement instruments which is intended for detection of ammonia gas emissions in agriculture and refrigeration industries.  The instrument utilises a fully calibrated metal-oxide semiconductor gas sensor with excellent repeatability, stability and long lifetime. Two relays with closing contact may be used for remote signalling or ventilation control. Two alarm set-points are user settable. Internal buzzer gives sound alarms. Two analog outputs and RS485 digital interface with industry standard Modbus RTU protocol can be used to connect the detector to safety or building automation systems.



  • Poultry
  • Dairy
  • Cattle  farms
  • Industrial refrigerators
  • Potentially dangerous concentration of NH3 can accumulate.


Calibration Ammonia NH3
Sensing method Metal-oxide semiconductor
Sampling method Diffusion
Detection range 0…1000 ppm NH3
Resolution 1 ppm NH3
Sensor lifetime > 5 years
Power supply 12…36 VDC (default)
24 VAC or 230 VAC as options
Digital interface RS485, Modbus RTU protocol
Analog outputs 2 × 4-20 mA / 0-10 V, user settable
Output relays 2 × SPST relays (closing contact),
250 VAC / 30 VDC, 5 A max
Alarms buzzer 85 dB
Default alarm set-points 25 ppm / 35 ppm NH3
Enclosure light-grey ABS plastic with ventilation slots, IP20
Dimensions H85 × W85 × D37 mm
Operating conditions -30…+70 °C, 0…95 %RH, non-condensing


Evikon E2611-NH3 Ammonia Detector Transmitter_DpstarGroup