IRC-A1 Carbon Dioxide Sensor

CO2 Gas Sensor, NDIR Pyroelectric, A-Series, IAQ to high-range measurement

High-resolution CO2 NDIR cell with universal linearisation and strong stability

The IRC-A1 is a non-dispersive infrared (NDIR) CO2 sensor using a dual-channel pyroelectric detector and patented optical design for high resolution and excellent stability. It supports IAQ ranges from 0–5,000 ppm as well as 0–5 %, 0–20 % and 0–100 % vol CO2 for safety, combustion and process control. Universal linearisation constants minimise per-cell calibration complexity while maintaining low error across the full operating range. IRC-A1 suits HVAC and IAQ monitors, industrial safety instruments and combustion analyzers requiring accurate CO2 measurement.
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Key Specifications:

 

Sensor Model

Target Gas

Technology / Package

Concentration Range

Accuracy

Resolution (Zero / Full Scale)

T90 Response Time

Operating Life

IRC-A1

Carbon Dioxide (CO2)

NDIR, pyroelectric detector, A-Series format

IAQ: 0–5,000 ppm
Safety: 0–5 % vol
Combustion: 0–20 % vol
Process: 0–100 % vol

IAQ: ±1 % FS
Safety: ±1.5 % FS Combustion: ±2.5 % FS
Process: ±4 % FS

IAQ: 1 ppm / 15 ppm
Safety: 1 ppm / 100 ppm
Combustion: 1 ppm / 500 ppm
Process: 1 ppm / 0.5 % vol

< 40 s at 20 °C

MTBF > 5 years (NDIR cell)
 

Feature

Benefit

Patented NDIR optical design

Delivers superior resolution and stability compared with conventional 20 mm NDIR cells.

Universal linearisation coefficients

Simplifies firmware implementation; no sensor-specific linearisation tables required in many applications.

Multiple configurable ranges (ppm to % vol)

One sensor platform supports IAQ, safety, combustion and process control instruments.

Integrated thermistor for temperature compensation

Enables precise span and zero temperature correction for low error across –10 to 40 °C.

Optional ambient light filter (IRC-AF)

Reduces susceptibility to fluctuating ambient light when the filter surface is exposed.
 

  • Resources

    Technical Datasheet

    Application Notes

    Design Considerations

    • Use with dedicated NDIR transmitter board and evaluation board.
    • Consider optional ambient light filter accessory (see Technical Datasheet) when exposed to varying light.

    Safety Documents

    Related Products

    • Accessories:
      • 4-20 mA NDIR Digital Board
      • Foam Seal
      • Dust Filter
      • Gas Hoods
    • Frequently Bought Together:
      • PRHT-A1, RHT-A1 environmental sensors for T/RH/pressure compensation
    • Related to this item:
      • IRC-AT thermopile-based CO2 NDIR sensor for low-power applications.