CM1106SL-NS Low Power Single Channel NDIR CO2 Sensor

The CM1106SL-NS is a super low power CO2 sensor designed for battery powered and wireless applications.
This sensor offers single measurment and continous measurement modes for application flexibility

Features

  • Low Power Consumption for Battery Powered Applications
  • Long Lifespan 15+ years
  • Maintenance Free - Automatic Baseline Calibration (ABC)
  • Adjustable Measurement Cycle
  • Adjustable ABC Cycle
  • Temperature and Humidity Compensation Throughout The Entire Measurment Range

Description

Specifications

Accuracy +/-50ppm + 5% of reading

+/-50ppm + 3% of reading (host averaging)

Measurment Range 0 to 5,000ppm
Temperature Range 14˚F to 155˚F (-10˚C to 50˚C)
Humidity Range 0-95% RH
Supply Voltage 3.3-5.5 VDC
Supply Current 74µA – 1 minute measurement cycle

37µA – 2 minute measurement cycle (default)

Communication Interfaces UART & I2C
Dimensions 33.5 x 19.7 x 9.1mm
Weight 5g
Life Expectancy >15 years

Operating Principle

Single Channel Non-Dispersive Infrared (NDIR) Sensors

NDIR sensors leverage Lambert-Beer’s law that states certain gasses exhibit absorption characteristics at a specifc infrared wavelength.

Single Channel NDIR sensors use an single infrared light source and a single IR detector “tuned” to the specific wavelength for the target gas. The IR light is passed through an optical bench that “folds” the light within the optical bench to create a long optical path length – providing high accuracy and resolution when measuring the target gas.

As the target gas concentration increases, the amount of received IR light at the IR detector decreases, this relationship is converted to a PPM measurment within the sensor.

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