E2638 Nitric Oxide NO Transmitter


  • Stable long-life electrochemical sensor
  • Detection range 0…250 ppm NO
  • Resolution 1 ppm NO
  • Two SPST relays option
  • 2 × 4-20 mA or 0-10 V, RS485

Nitric oxide detector-transmitter E2638-NO is a member of new PluraSens® family of multifunctional measurement instruments.

Applications include chemical industry, medicine, laboratories, and other areas, where potentially toxic concentration of nitric oxide can accumulate.

The instrument utilises 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.

Technical Data
Calibration nitric oxide NO
Sensor type electrochemical
Sampling method diffusion
Detection range 0…250 ppm NO
Resolution 1 ppm NO
Sensor lifetime > 12 months
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 10 ppm / 25 ppm NO
Enclosure grey ABS plastic, wall mount, IP65
Dimensions H90 × W145 × D55 mm
Operating conditions -30…+50 °C, 15…90 %RH

contact us