The Microsense IR Refrigerant Gas Detector

The Microsense IR is a high quality infrared fixed gas detector for detecting a range of different refrigerant gases. The detector utilises a high quality IR sensor suitable for detection of very low concentrations of refrigerants (less than 10 ppm).

Housed within an IP54 rugged enclosure, the Microsense IR refrigerant gas detector is suitable for use in non-hazardous areas such as plant rooms or hotel and office rooms. It’s integrated algorithm compensates for drift and temperature variations.

The unit offers easy access for installation of field wiring and allows for installation close to floor levels and is compliant with AS/NZS 1677.2.1998 (Refrigerating systems Safety requirements for fixed applications).

Product Features

  • Rugged and Reliable
  • In compliance with AS/NZS 1677
  • ABS Housing
  • High accuracy, selectivity and reliability
  • Temperature Compensated
  • Detection of low concentrations
  • Low cost of Ownership
  • Fast Response
  • Not cross sensitive to other gases


  • Detection range 0-1000 ppm
  • Detects R22, R123, R125, R134a, R404a, R407a, R410, R407c & R507
  • Non-Dispersive Infrared Technology
  • Diffusion principle, no pump required
  • Response Time T90 < 30 Sec
  • Digital resolution 1 ppm
  • Detection Limit 10 ppm
  • Repeatability 1% FS
  • Long Term Output Drift 1% / Year
  • Operating Temperature -10 to 40C
  • Operating Humidity 0 to 95%
  • Power Supply Required 12-28VDC
  • Output 4-20 mA
  • EMC compliance AS/NZS 61000-3-2