E2638 Nitrous Oxide N2O Transmitter


  • Stable long-life optical NDIR sensor
  • Range 0…1000 ppm N2O
  • Resolution 20 ppm N2O
  • Two SPST relays option
  • 2 × 4-20 mA or 0-10 V, RS485

Nitrous oxide detector-transmitter E2638-N2O is a member of new PluraSens® family of multifunctional measurement instruments.

Applications include electronics manufacturing, food industry, medicine and other confined spaces, where high concentration of nitrous oxide can accumulate.

The instrument utilises fully calibrated and temperature compensated optical NDIR 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 nitrous oxide N2O
Sensor type optical NDIR
Sampling method diffusion
Detection range 0…1000 ppm N2O
Resolution 20 ppm N2O
Sensor lifetime up to 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 (option) 2 × SPST relays (closing contact),
Enclosure grey ABS plastic, wall mount, IP65
Dimensions H90 × W145 × D55 mm
Operating conditions -20…+50 °C, 0…95 %RH

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