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CO2-meter [version 2]
[1w-co2-v2]

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CO2-meter [version 2]
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Carbon dioxide meter (CO2) that is built around the K30 sensor from SenseAir. The CO2-level is read by DS2450S.
Facts:

  • Co2 sensor for 1wire connection
  • Measures 0-5000ppm
  • The sensor's accuracy is: ± 30 ppm ± 5% of measured value.
  • The sensor is self-calibrating, for more info see the sensor data sheet.
  • Requires power supply with +5 V.
  • Average power consumption is around 40mA, but when booting the sensor requires 300mA.
  • Due to the high initial power consumption, you should place the sensor near a power injector or USB port. Note that not all USB ports can provide enough power to boot the sensor.
  • The output signal is linear over 0-5V and corresponds to 0-5000ppm, or 1000ppm per volt.
  • The output is connected to input A on the DS2450S.
  • To input B on the DS2450S a "status OK" signal from the K30 sensor is connected. This signal should always be around 3.2V.
  • To input D on DS2450S the power supply voltage is connected.
  • The cable is connected via a screw terminal.
  • Dustproof encapsulation is included.
The sensor must be placed indoors. (Outdoor value is always around 400ppm.)

Carbon dioxide concentration is a good measure of how well a room is ventilated. Carbon dioxide concentration should be below 1000ppm.

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CO2-meter [version 2]
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CO2-meter [version 2]
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