MQ3 Sensor Interfacing with PIC16F628A | Simulation |Alcohol, Benzine, Hexane,LPG,CO
MQ3 Sensor Interfacing with PIC16F628A | Simulation |Alcohol, Benzine, Hexane,LPG,CO Gas Detector
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Features of MQ-3 Alcohol Sensor
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1] Sensor Type - Semiconductor
2] Easy SIP header interface
3] Compatible with most of the microcontrollers
4] Low-power standby mode
5] Requires heater voltage
6] Good sensitivity to alcohol gas
7] Fast response and High sensitivity
8] Long life and low cost
9] Requires simple Drive circuit
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Specifications of MQ-3 Gas Sensor
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1] Power requirements: 5 VDC @ ~165 mA (heater on) / ~60 mA (heater off)
2] Current Consumption: 150mA
3] DO output: TTL digital 0 and 1 ( 0.1 and 5V)
4] AO output: 0.1- 0.3 V (relative to pollution), the maximum concentration of a voltage of about 4V
5] Detecting Concentration: 0.05-10mg/L Alcohol
6] nterface: 1 TTL compatible input (HSW), 1 TTL compatible output (ALR)
7] Heater consumption: less than 750mW
8] Operating temperature: 14 to 122 °F (-10 to 50°C)
9] Load resistance: 200kΩ
10] Sensitivity S: Rs(in air)/Rs(0.4mg/L Alcohol)≥5
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