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Edinburgh Sensors GascheckInfared Gas Sensors for Low Cost CO2 Sensors

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The GasCheck series presents a cost-effective solution to CO2 sensing with high accuracy and long-term stability. Designed for minimal cross sensitivity, the sensors are compact and have low power requirements. They are available in three measurement ranges: 3000ppm, 3%, and 10%, with a standard 0 to 1 V non-linear output. An optional linearization board can be integrated to yield a linear 4 to 20 mA output. The 3000ppm model can also incorporate a diffusion assembly. Key design features include analogue electronics and a gold-plated optical reflector, ensuring robust construction and enduring performance. These sensors exemplify strong European build quality, supported globally. Ideal for applications demanding precision CO2 monitoring.

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The GasCheck is a series of low cost COsensors that offer high accuracy, good long term stability, negligible cross sensitivity, small size and low power requirement.

The basic GasCheck is available in three ranges 3000ppm, 3% and 10% with a 0 to 1 V non-linear output. A linearization board can be added as an option to give linear 4 to 20 mA output.

The option of a diffusion assembly is available for the 3000ppm unit.

  • Analogue electronics.
  • Long-term stability.
  • Robust construction.
  • Gold-plated optical reflector.
  • Model: CO2
  • Diffusion: 0 - 3000ppm
  • Pumped:
    • 0 - 3000 ppm
    • 0 - 3%
    • 0 - 10%
  • Accuracy: ±3% of range*
  • Zero stability: ±3% of range (over 12 months)
  • Repeatability @ Zero: ±0.5% of ranges
  • Repeatability @ Span: ±1.5%
  • Response Time: T90 = 30 seconds (pumped versions), T90 = 260 seconds (diffusion versions)
  • Operating Temp: 0 - 45°C
  • Operating Pressure: Calibrated for 1013mbar
  • Power Requirements: 15V DC (24V DC for linearised versions)
  • Power Consumption: 0.9W
  • Warm-up time: 5 minute (initial) 30 minutes (full specification)
  • Humidity: Measurements are unaffected by 0-95% relative humidity, non-condensing
  • Output: 0-1V (non-linear), 4 - 20mA (linear version)
  • Personal safety
  • Process control
  • Compress air
  • Horticulture
  • Fruit storage
  • Many more