Amphenol SGX Sensortech IR600 Infrared Gas Sensors

Amphenol SGX Sensortech IR600 Infrared Gas Sensors are designed for detection and monitoring the presence of CO2, hydrocarbons, and acetylene. The IR600 Sensors use the same non-dispersive infrared (NDIR) principle as used in the SGX Sensortech range of miniature infrared gas sensors. Dual detector channels are used with a reference for background compensation and a temperature sensor is mounted for temperature compensation. IR600 Sensors are designed to be integrated with fixed gas detection systems.

The sensors are constructed with a stainless steel flameproof enclosure with an integral stainless steel sinter for the safe entry of the gases being tested. Three types of mounting thread are available for easy fixing to the junction box of a fixed system. An external M46 thread is present on the front face for attaching optional accessories for use in different applications. The IR600 Series incorporates an inbuilt and sealed preamplifier/buffer and requires connection to suitable transmitter systems for their power supply, operation, and signal processing. Lead-in/out terminates in an 8-pin connector.


  • For detection of:
    • Carbon Dioxide (IR601)
    • Hydrocarbons (IR602 and IR603)
    • Acetylene (IR604)
  • Diffused gas sampling via sinter
  • Low power
  • Reference channel for self-compensation
  • Special gold plated optical/gas cavity for stable signal levels
  • Operational in varying temperatures, pressures, and humidity
  • Fast response
  • Rugged stainless steel construction
  • No moving parts
  • Resistance to corrosion
  • Immunity from ‘poisoning’
  • Reliable fail-safe operation
  • Low maintenance
  • Sealed preamplifier/buffer electronics
  • Accessories available for field applications
  • ATEX certified
  • CSA certified (Canada and US)


  • Ambient temperature ranges
    • -20°C to +60°C for operation (ATEX) and storage
    • -20°C to +65°C for operation (CSA)
  • 700kPa to 1300kPa operational pressure range
  • 180mW, 5V typical power
  • +5V, 60mA lamp supply (recommended)
  • <40s maximum response time
  • ±0.1% vol. maximum deviation from linearity
  • >10-years MTBF for 5V operation
Published: 2017-05-03 | Updated: 2022-03-22