MEMS Breath Gas Sensor GM-512B

  • GM-102B.png


MEMS breath smell gas sensor is using MEMS micro-fabrication hot plate on a Si substrate base, gas-sensitive materials used in the clean air with low conductivity metal oxide semiconductor material. When the sensor exposed to gas atmosphere, the conductivity is changing as the detected gas concentration in the air. The higher the concentration of the gas, the higher the conductivity. Using simple circuit can convert the change of conductivity of the gas concentration corresponding to the output signal.


* MEMS technology, strong structure
* High sensitivity to H2S, Alcohol, and acetone gas 
* Small size, High sensitivity, Low power consumption
* Fast response and resume, Simple drive circuit, Long lifespan 

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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.


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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Specification Product Size

Technical Data Sheet

Model GM-512B
Sensor Type MEMS Breath Smell Gas Sensor
Standard Encapsulation Ceramic
Detection Gas H2S, Alcohol, and acetone gas
Detection range 0.5~50ppm (H2S)
Standard Circuit Loop Voltage VC ≤24V DC
Heating voltage VH 2.5V±0.1V AC or DC (High temp.)
Load resistance RL Adjustable
Sensor features in standard test condition Heating resistance RH 80Ω±20Ω(Room Temp.)
Heating consumption PH ≤50mW
Surface resistance RS 10KΩ~100KΩ
(in 5ppm H2S)
Sensitivity S R0(in air)/Rs(in 5ppm  H2S)≥2
Standard condition of test Temperature, humidity 20℃±2℃;55%±5%RH
Standard test circuit VC:5.0V±0.1V;
VH:2.5V±0.1V (high temp.)


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As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:


As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:


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We have 17 sensor series, 200+ categories, and 300+ detection objects for gas detection. Such as CO, CO2, VOC, PM2.5, CH4, LPG and so on. In particular, we also have MEMS sensors. According to your industry application, gas principle, power consumption, accuracy, and range requirements, and we can select a specific model for you. You can also use the product filter below to choose a suitable product, or choose online serivce.

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Our product design conforms to international standards, the whole machine generally does not have certification requirements for electronic components. We have few CE/UL/ explosion-proof certificate/mine safety mark certificates for some models. For customers with special needs, we can provide relevant certification according to their needs based on a certain quantity of order.

What Are the Precautions for Manual Soldering of Semiconductor Sensors?

1. Flux: rosin flux with the least chlorine; 2. Constant temperature soldering iron; 3. Temperature: 250℃; 4. Time: no more than 3 seconds.

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