Shanghai Yixin

G4(P)-CO2 Carbon Dioxide NDIR Infrared Gas Sensor (Upgraded)

Model: G4(P)-CO2

Carbon Dioxide Non-Dispersive Infrared (NDIR, dual-wavelength optical path)

Upgraded G4 CO2: 5000 ppm / 5%VOL / 100%VOL ranges, T90 < 25 s

G4(P)-CO2 Carbon Dioxide NDIR Infrared Gas Sensor (Upgraded)

The G4(P)-CO2 is the upgraded CO2 model of the G4 platform, based on a dual-wavelength NDIR optical design and covering 0-5000 ppm, 0-5%VOL and 0-100%VOL ranges. Compared with the standard G4 series it offers higher resolution (0.01%VOL on 0-5%VOL, 10 ppm on 5000 ppm), faster response (T90 < 25 s) and improved long-term stability, with full-range temperature compensation and operating temperature down to -40 ℃. It provides UART floating-point digital output and 0.4 ~ 2 V analog output, intrinsically safe, compliant with AQ1052-2008 mine CO2 sensors — suitable for coal mines, industrial process control, greenhouse agriculture, environmental monitoring and indoor air quality.

Key Features

  • Higher resolution than G4: 0.01%VOL (0-5%VOL) / 0.5%LEL (0-100%LEL) / 10 ppm (0-5000 ppm)
  • Faster response than G4, T90 < 25 s (free diffusion)
  • Improved long-term stability, full-range temperature compensation
  • Wide operating range: -40 ℃ to +70 ℃
  • Floating-point digital output + 0.4 ~ 2 V analog output
  • No catalytic poisoning, no oxygen dependency, intrinsically safe

Typical Applications

Coal Mine SafetyIndustrial Process ControlGreenhouse & LivestockEnvironmental Monitoring

Calibration & Cross-Sensitivity

Calibrated with CO2 standard gas; details — see the G4 selection guide or inquire.