MSR PolyXeta 2 Sensor transmitter for Hazardous Oil/Gas Industries

The PolyXeta 2 sensor is used in industrial areas like oil/gas industry, biogas plants, petrochemical industry, power plants etc in Ex-Zone 1 or Zone 2. The PolyXeta 2 sensor is also suitable for commercial areas like gas transfer stations etc

Microprocessor based gas sensor with 4 – 20 mA / RS485-Modbus output signal, alarm and fault relays (all SIL2 certified) for monitoring the ambient air to detect combustible gases and vapors within the lower explosive limit (LEL) by means of a catalytic sensor element (pellistor) or an infrared sensor element. The calibration of sensors without LCD display is carried out via the calibration device Cal PX or the PC software PC-Soft 80. Sensors with LCD display have an integrated calibration routine that is started from the outside by a permanent magnet without opening the housing. In case of an alarm or a fault, the backlight of the sensors with LCD display changes from green to red.


  • ATEX and IEC Ex certificates MSR-Electronic for electrical Ex protection
  • ATEX metrical test & SIL2 safety functions 4 – 20 mA, RS485 and relay
  • Type “Ex d” with flame-proof enclosure
  •  Continuous monitoring
  •  Microprocessor with 12 bit converter resolution
  •  Self-monitoring system
  •  Easy calibration
  •  Calibration service by exchanging the sensor head
  •  Proportional 4 – 20 mA output
  •  Serial interface to the control center
  •  Reverse polarity protection
  •  Overload protection
  •  LCD display with status LEDs (optional)
  •  Alarm and fault signal relay (optional)

Click here for Zone 1 series of Gas sensor transmitter

Click here for Zone 2 series of Gas sensor transmitter