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MEMS NO2 Sensor GM-102B

Summary:

MEMS NO₂ gas sensor is using MEMS micro-fabrication hot plate on a Si substrate base, gas-sensitive materials used in the clean air is 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

* High sensitivity to NO₂ gas

* Small sizes and low power consumption

* Fast response and resume

* Simple drive circuit, Long lifespan

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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-102B
Sensor Type			MEMS
Standard Encapsulation			Ceramic
Detection Gas			NO₂
Detection Range			0.1~10ppm (NO₂)
Standard Circuit Conditions	Loop Voltage	V_C	≤24V DC
	Heater Voltage	V_H	2.0V±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	≤40mW
	sensitive materials resistance	R_S	10KΩ～1000KΩ(in 2ppm NO₂)
	Sensitivity	S	R₀(in air)/R_S(in 2ppm NO₂)≤ 0.5
Standard test conditions	Temp. Humidity		20℃±2℃；55%±5%RH
Standard test conditions	Standard test circuit		V_H:2.0V±0.1V； V_C :5.0V±0.1V

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