Techkey - MQ3 Gas Sensor

MQ3 Gas Sensor

Power requirements: 5 VDC @ ~165 mA (heater on) / ~60 mA (heater off) Current Consumption: 150mA DO output: TTL digital 0 and 1 ( 0.1 and 5V) AO output: 0.1- 0.3 V (relative to pollution), the maximum concentration of a voltage of about 4V Detecting Concentration: 0.05-10mg/L Alcohol Interface: 1 TTL compatible input (HSW), 1 TTL compatible output (ALR) Heater consumption: less than 750mW Operating temperature: 14 to 122 °F (-10 to 50°C) Load resistance: 200kΩ Sensitivity S: Rs(in air)/Rs(0.4mg/L Alcohol)≥5 Sensing Resistance Rs: 2KΩ-20KΩ(in 0.4mg/l alcohol) Dimensions: 32 x 22 x 16 mm

MQ3 Gas Sensor

PRODUCT ID/SKU : A21-01

Rs. 495.00

MQ-3 module is suitable for detecting Alcohol, Benzine, CH4, Hexane, LPG, CO. Sensitive material of MQ-3 gas sensor is SnO2, which with lower conductivity in clean air. When the target alcohol gas exist, the sensor’s conductivity is more higher along side the gas concentration rising. MQ-3 gas sensor has high sensitity to Alcohol, and has good resistance to disturb of gasoline, smoke and vapor.