The gas and smoke sensor detects the concentrations of combustible gas in the air and give outputs, its reading as an analog voltage. It measure concentrations of flammable gas of 300 to 10,000 ppm. Operating at temperatures from -20 to 50°C, It operates 150 mA at 5 V.
1. It measure concentrations of flammable gas of 300 to 10,000 ppm.
2. Operating at temperatures from -20 to 50°C
3. It operates 150 mA at 5 V.
Gas and smoke sensor pin detail with PDF Click Here
- Domestic gas leakage detector
- Industrial Combustible gas detector
- Portable gas detector
Structure and configuration:-
Operation The sensor need to be put 2 voltage, heater voltage（VH） and test voltage（VC. VH used to supply certified working temperature to the sensor, while VC used to detect voltage (VRL) on load resistance (RL) is in series with sensor.
The sensor has light polarity, Vc need DC power. VC and VH could use same power circuit with precondition to assure performance of sensor. In order to make the sensor with better performance, suitable RL value is needed: Power of Sensitivity body(Ps):
IMPORTANT:- RL Value in the practical circuit is 22k Ohms is gives better result.
Ps=Vc2×Rs/(Rs+RL)2, Resistance of sensor(Rs): Rs=(Vc/VRL-1)×RL