E2638-HFC

Refrigerant Detector
E2638-HFC
Features
  • Stable long-life metal-oxide sensor
  • Ranges 0...1000 / 0...2500 ppm halocarbon gas
  • Resolution 1 ppm halocarbon gas
  • Two SPST relays option
  • 2 × 4-20 mA or 0-10 V, RS485
Description

Refrigerant detector-transmitter E2638-HFC is a member of new PluraSens® family of multifunctional measurement instruments.

Applications include cold storage warehouses, refrigeration plants, skating arenas, hotels.

The instrument utilises a fully calibrated metal-oxide semiconductor gas sensor with excellent repeatability, stability and long lifetime. The sensor is highly sensitive to a wide range of CFC, HFC and HFO compounds, including R-12, R-123, R-125, R-134a, R-143, R-22, R-404a, R-407c, R-410a, R1234yf and similar.

For demanding applications, a NDIR sensor is available on request.

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
Detected gases R-12, R-123, R-125, R-134a, R-143, R-22, R-404a, R-407c, R-410a, R1234yf etc
Default calibration R-404a
Sensor type metal-oxide semiconductor
optical NDIR on demand
Sampling method diffusion
Detection ranges 0...1000 ppm halocarbon gas
0...2500 ppm halocarbon gas
Resolution 1 ppm halocarbon gas
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 (option) 2 × SPST relays (closing contact),
250 VAC / 30 VDC, 5 A max
Default alarm set-points 100 ppm / 500 ppm halocarbon gas
Enclosure grey ABS plastic, wall mount, IP65
Dimensions H90 × W145 × D55 mm
Operating conditions -30...+60 °C, < 95 %RH


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