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Summary:
MEMS combustible 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. Use simple circuit can convert the change of conductivity of the gas concentration corresponding to the output signal.
Feature:
* MEMS technology, Strong construction
* Good shock resistance
* Small sizes and low power consumption
* Fast response and resume
* Simple drive circuit, Long lifespan
APPLICATION
The combustible gas alarm is an alarm device for detecting gas leakage. The component that reacts to the combustible gas is a gas sensor, and the response signal is converted into an electrical signal through the circuit board. When the combustible gas in the air reaches a certain concentration value, the alarm will alarm. The high-end household combustible gas alarm can automatically start the exhaust equipment and close the gas pipeline valve at the same time. A wireless transmission device can be installed inside the gas alarm to realize overall monitoring and network alarm to ensure the safety of everyone's life and property.
Formaldehyde detector is an instrument for detecting formaldehyde. Generally, semiconductor sensors and electrochemical sensors are used to realize the rapid semi-quantification of formaldehyde in indoor air on the spot, which is characterized by simple structure, small size, intuitive,easy to carry and use.
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PARAMETER
Technical Data Sheet
Part No. | GM-402B | ||
Sensor Type | MEMS | ||
Standard Encapsulation | Ceramic | ||
Detection Gas | CH4, C3H8 &etc. | ||
Detection Range | 1~10000ppm (CH4) 1~10000ppm (C3H8) | ||
Standard Circuit Conditions | Loop Voltage | VC | ≤24V DC |
Heater Voltage | VH | 2.8V±0.1V AC or DC | |
Load Resistance | RL | Adjustable | |
Sensor character under standard test conditions | Heater Resistance | RH | 80Ω±20Ω(room temperature) |
Heater consumption | PH | ≤80mW | |
sensitive materials resistance | RS | 1KΩ~30KΩ(in 5000ppm CH4) 1KΩ~30KΩ(in 2000ppm C3H8) | |
Sensitivity | S | R0(in air)/Rs(in 5000ppmCH4)≥3 R0(in air)/Rs(in 2000ppmC3H8)≥3 | |
Standard test conditions | Temp. Humidity | 20℃±2℃;55%±5%RH | |
Standard test circuit | VH:2.8V±0.1V;VC :5.0V±0.1V |

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