C2H5OH Sensor MQ303B Semiconductor Air Pollution Detection Gas Sensor For Alcohol Gas Tester And Breathalyzer

• Model Number:XST-MQ303B
• Place of Origin:Guangdong, China
• Brand Name:Xunster
• Usage:Alcohol Gas Tester
• Brand:Semiconductor Sensor
• Operating Temperature:20℃±2℃
• Humidity Range:55%±5%RH
• Resistance:none
• Resistance Tolerance:none
• Sensing Temperature - Local:none
• Sensing Temperature - Remote:none
• Current Rating - AC:none
• Current Rating - DC:none
• Tolerance:none
• Voltage - Rated:none
• Flow Sensor Type:none
• Voltage - Input:none
• Application:none
• Output Function:none
• D/C:none
• Cross Reference:none
• Standard Encapsulation:Metal
• Target Gas:Alcohol gas
• Detection Range:20~ 500ppm alcohol
• Loop Voltage:0.9V±0.1V AC or DC
• Heater Voltage:≤6V DC
• Heater Resistance:4.0Ω±0.5Ω(room temp.)
• Heater consumption:≤140mW
• Zero point:0.01~0.45V
• Sensitivity:1.0~2.5V (in 125ppm C2H5OH)
• Standard test circuit:VH:0.9V±0.1V;VC:3.0V±0.1V

Profile
Sensitive material of MQ303B gas sensor is semiconductor material which is with lower conductivity in clean air. When the target alcohol gas exists, the sensor’s conductivity gets higher along with the gas concentration rising. Users can convert the change of conductivity to correspond output signal of gas concentration through a simple circuit.

Features
High sensitivity, quick response and resume, long lifespan, low power consumption, low cost, small sizes.

Main Applications
It has high sensitivity to alcohol and quick response and resume, widely used in portable alcohol gas detector.