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MEMS Integrated Gas Sensor GM-202B

Summary:

MEMS smoke 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

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APPLICATION

Home Combustible Gas Alarm

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.

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Other Detector

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

Specification Product Size

Technical Data Sheet

Part No.			GM-202B
Sensor Type			MEMS
Standard Encapsulation			Ceramic
Detection Gas			CH₄, C₃H₈ &etc.
Detection Range			1~5000ppm (C3H8)
Standard Circuit Conditions	Loop Voltage	V_C	≤24V DC
	Heater Voltage	V_H	2.5V±0.1V AC or DC
	Load Resistance	R_L	Adjustable
Sensor character under standard test conditions	Heater Resistance	R_H	80Ω±20Ω（room temperature）
	Heater consumption	P_H	≤50mW
	sensitive materials resistance	R_S	1KΩ～30KΩ(in 50ppm C₃H₈)
	Sensitivity	S	R0(in air)/Rs(in 5000ppmCH₄)≥1.5
	Concentration Slope	α	≤0.6(R100ppm/R30ppmC₃H₈)
Standard test conditions	Temp. Humidity		20℃±2℃；55%±5%RH
Standard test conditions	Standard test circuit		VH:2.5V±0.1V；VC :5.0V±0.1V

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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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Here you can learn about the selection guide, common technical problems, packaging, transportation, MOQ, delivery time, etc.

What is the Difference Between Semiconductor Sensors and Electrochemical Sensors?

There is no good linear correspondence between the gas concentration and voltage of the semiconductor sensor, and it is generally only used for fixed-point calibration products; there is a good linear correspondence between the gas concentration and the output current of the electrochemical sensor, and can be made into quantitative detection products.