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MEMS VOC Gas Sensor - GM-502B

• MEMS technology, strong structure
• Low power consumption
• High sensitivity
• Fast response and resume
• Simple drive circuit

Model Number: GM-502B
Data Sheet:

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Product Specification

GM-502B MEMS VOC Gas Sensor Product description：

MEMS VOC 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.

GM-502B MEMS VOC Gas Sensor Character：

• MEMS technology, strong structure

• Low power consumption

• High sensitivity

• Fast response and resume

• Simple drive circuit

GM-502B MEMS VOC Gas Sensor Application ：

Gas leak detection for mobile phones, computers and other consumer electronics applications, also for breathing gas detection control, smoke alarm indoor & etc.

Main Parameter：

Part No.			GM-502B
Sensor Type			MEMS VOC Sensor
Standard Encapsulation			Ceramic
Detection Gas			Ethanol, formaldehyde, toluene &etc.
Detection Range			1~500ppm
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 ethanol)
	Sensitivity	S	R0(in air)/Rs( in 50ppm ethanol )≥3.0
Standard test conditions	Temp. Humidity		20℃±2℃；55%±5%RH
Standard test conditions	Standard test circuit		V_H:2.5V±0.1V；V_C :5.0V±0.1V