Amphenol SGX Sensortech Integrated IR (INIR) Gas Sensors

Amphenol SGX Sensortech Integrated IR (INIR) Gas Sensors are designed with an ARM7-core microcontroller to increase reliability and minimize the probability of faults. These user-friendly sensors incorporate the necessary electronics and embedded software to operate from a low voltage DC power supply. Amphenol SGX Sensortech Integrated IR (INIR) Sensors process raw signals to output a linear, temperature compensated signal proportional to the gas concentration applied. The output signal is available in digital and analog forms. These devices offer high resolution up to 10ppm and a detectivity level as low as 100ppm. Typical applications include hazardous areas, mining, automation/control, indoor air quality, and industrial health/safety.


  • Triple range gas sensor with automatic switchover between ranges
  • High resolution up to 10ppm
  • Detectivity level as low as 100ppm
  • Digital and analog concentration output
    • Completely linearized concentration
    • Temperature-compensated
    • Condensation compensation algorithm
    • Humidity compensated concentration
  • Internal temperature digitally transmitted via UART
  • Active and reference signals monitored digitally transmitted via UART
  • Full faults diagnostics and error generation
  • Cyclic redundancy check (CRC)
  • Three different modes of operation
  • Automatic thermal shutdown function
  • Automatic overcurrent protection function
  • Advanced ESD ±30kV (IEC 61000-4-2) protection
  • Typical low power consumption of <32mA (average)
  • Factory calibrated for methane or carbon dioxide or, if required, for various other ranges or gases
  • 24-bit Analog-to-Digital Converter (ADC)
  • 14-bit Digital-to-Analog (DAC) output
  • Easy implementation into Sensors Network
  • Certified sensor for use in explosive atmospheres (EX)
  • RoHS compliant


  • Hazardous areas
  • Mining
  • Automation and control
  • Indoor air quality
  • Industrial health and safety


  • 3.2VDC to 5.25VDC supply voltage range
  • 30mA to 35mA average current consumption range
  • Temperature ranges
    • -40°C to +75°C operating
    • -20°C to +55°C storage
  • 0.8°C/min typical temperature cycle limits
  • 80kPa to 120kPa pressure range
  • ø19.9mm to ø20.1mm diameter range
  • 16.50mm to 16.70mm height range
  • 4.0mm to 5.6mm pin height range
  • Stainless steel body material
Published: 2017-04-24 | Updated: 2022-03-16