PR-3002-CO2-I20 CO2 Sensor 0-10000 PPM, 4-20mA Output
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Prices updated: 13 Oct 2026
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About this product
Carbon dioxide (CO2) sensor transmitter with a 4-20 mA analog current output, covering 0 to 10000 ppm. It is used for indoor air quality monitoring, ventilation control and CO2 measurement in greenhouses or industrial spaces, with the reading sent to a controller or data logger over a current loop.
Specifications
- Gas measured
- CO2
- Measuring range
- 0-10000 PPM
- Output signal
- 4-20 mA analog
- Output type
- Current loop
Frequently asked questions
How do I read the 4-20 mA output with an Arduino?
Pass the loop current through a precision resistor (commonly 250 ohm) to convert it to a 1-5 V signal, then read that voltage on an ADC input. Confirm the sensor's supply voltage on its label or datasheet before wiring.
What does a given current mean in ppm?
Under the standard 4-20 mA scale, 4 mA corresponds to 0 ppm and 20 mA corresponds to 10000 ppm, with values in between scaled linearly. Verify this mapping in the manufacturer's manual.
