Description: Grove - HCHO gas sensor - WSP21100 - semiconductor - analog.
The sensor is able to detectHCHOgases thanks to theWSP21100system, whose resistance changes with the growth of volatile organic compounds in the air. It is capable of detecting gases up to 1 ppm. It can be used to detect toluene, methanol, benzene, alcohol, acetone, etc. The module is equipped with a Grove connector for easy connection to the main circuit.
Arduino compatible product
The manufacturer providesa user guideshowing its connection and programming.
Carbon monoxide, coke oven gas and LPG sensor connection - MQ9
The sensor communicates viaan analog interface, thanks to the use of Grove connector it is possible to connect it directly to Arduinoand RaspberryusingGrove-Pi+ or Grove BaseShield.Due to the interface used for communication by the sensor, it is necessary to use a Grove-Pi+ overlayorADCtocommunicate with Raspberry.
|GND||The weight of the system.|
|VCC||The supply voltage is 5 V.|
|SIG||Sensor output signal.|
HCHO sensor specification
- The tension of work: 5 V ± 0,3 V
- Gases detected: HCHO, Gasoline, Toluene, Alcohol
- Type: solid-state
- Concentration detection range: 1 to 50 ppm
- Sensor resistance range: from 10 kΩto 100 kΩ (for 10 ppm HCHO)
- Sensitivity: RS (in air) / RS (10 ppm HCHO) ≥5