Evikon E2658-NH3-E Flameproof Ammonia Detector Transmitter


  • Wall mount robust flameproof metal enclosure
  • Suitable for ATEX Zones 2 and 22
  • Two analog outputs settable to 4-20 mA or 0-10 V
  • RS485 Modbus RTU digital interface
  • Relay option

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.

E2658 series is a new line of flameproof detectors and transmitters intended for use in ATEX Zones 2 and 22.  E2658 series devices are based on PluraSens® multifunctional platform. Ammonia detector-transmitter E2658-NH3-E a fully calibrated and temperature compensated electrochemical gas sensor with excellent repeatability, stability and long lifetime. Two relays with closing contact (optional) may be used for remote signalling or concentration control. Two alarm set-points are user settable. 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.



Calibration ammonia NH3
Sensor type electrochemical
Sampling method diffusion
Detection range 0…100 ppm NH3
0…300 ppm NH3
0…1000 ppm NH3
up to 10000 ppm on request
Resolution 1 / 2 / 5 ppm NH3
Repeatability ± 10%
Sensor lifetime > 2 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 (option) 2 × SPST relays (closing contact),
250 VAC / 30 VDC, 5 A max
Default alarm set-points 25 ppm / 35 ppm NH3
Enclosure die-cast aluminium, wall mount, IP66
Dimensions H80 × W125 × D57 mm
Operating conditions -40…+50 °C, 15…90 %RH
safe areas and ATEX Zones 2 and 22


Evikon E2658-NH3-E Flameproof Ammonia Detector Transmitter_DpstarGroup


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