Combustible Gases Transmitter
  • Simultaneous CO and combustible gases monitoring
  • RS485 Modbus RTU digital interface
  • Two analog outputs 4-20 mA / 0-10 V
  • Easy-to-install IP65 protected enclosure
  • Attached or remote sensor
  • Two SPST relays option
  • Acoustic alarm option

E2660-CO-LEL detector-transmitter is an easy-to-use instrument intended for simultaneous monitoring of carbon monoxide, hydrogen, methane, acetylene, propane and butane concentration.

The device may be used in underground parkings, boiler houses, battery charging rooms, energy storages and other confined spaces, where potentially toxic concentration of carbon monoxide and combustible gases can accumulate.

The instrument utilizes novel fully calibrated and temperature compensated gas sensors with excellent repeatability, stability, and long lifetime.

Two analog outputs and RS485 digital interface with industry standard Modbus RTU protocol can be used to connect the transmitter to safety or building automation systems.

Technical Data
Sensors type Electrochemical cell
metal-oxide semiconductor (MOS)
pellistor (catalytic bead)
Sampling method Diffusion
Detection ranges 0...300 ppm / 0...1000 ppm CO
0...100% LEL
Resolution 1 ppm vol CO
0,1 / 1% LEL
Sensor lifetime Pellistor - >3 years
MOS - >5 years
Electrochemical - >10 years
Calibration interval 6 months (pellistor)
12 months (electrochemical and MOS)
Power supply 12...36 VDC (default),
24 VAC or 230 VAC as options
Analog outputs two 4-20 mA / 0-10 V (user settable)
Enclosure grey ABS plastic, IP65
Dimensions H90 × W145 × D50 mm
Operating conditions -20...+50 °C, 15...90 %RH