Flat Semiconductor Alcohol Sensor MP-3B


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Summary:

MP-3B model with advanced planar construction is comprised of heater and metal oxide semiconductor material of subminiature Al2O3 ceramic plate, fetch out electrode down-lead, encapsulation in metal base and cap. When the target gas (alcohol) exists , The sensor's conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.

Feature:

* Lower consumption 
* Small size
* Fast response and resume 
* Highest sensitivity
* Excellent stability and long life
* Easy circuit and big signal output 
* Excellent selectivity 

 

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APPLICATION

Vehicle Alcohol Test

The picture shows a common "ignition interlock system" with an alcohol detection function in the United States. This lock is connected to the ignition system of the car. Before ignition, the driver must blow air to ensure that the alcohol concentration in the body does not exceed the standard. and the car can start.

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Alcohol Detector

Strengthen the punishment of drinking and driving in all the country to reduce the vicious traffic accidents caused by drunk driving. This involves testing a person's alcohol level and using equipment to do the testing. An alcohol detector is an effective tool for measuring the alcohol content in the human body.

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PARAMETER

Specification Product Size

Technical Data Sheet

Model MP-3B
Sensor Type Flat Surfaced Semiconductor
Standard Encapsulation Metal Cap
Target Gas Alcohol gas
Detection range 0~500ppm alcohol
Standard Circuit Conditions Loop Voltage VC ≤24V DC
Heater Voltage VH 2.5V±0.1V AC or DC
Load Resistance RL Adjustable
Sensor character under standard test conditions Heater Resistance RH 23.5Ω±4.5Ω (room tem.)
Heater consumption PH ≤350mW
Resistance of sensitive material RS 5KΩ~50KΩ (in 50ppm C2H5OH)
Sensitivity S Ro(in air)/Rs(50ppm C2H5OH)≥3
Concentration Slope α ≤0.6(R3000ppm/R50ppm C2H5OH)
Standard test conditions Tem.  Humidity 22℃±2℃;55%±5%RH
Standard test circuit VC: 2.5V±0.1V
VH: 2.5V±0.1V
Preheat time Not less than 48 hours

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