[shortdesc]Application:Portable and fixed type hydrogen sulfide monitor, and H2S detector.
Feature:MEMS technology, Strong construction,Small sizes and low power consumption,High sensitivity to H2S gases,Fast response and resume,Simple drive circuit, Long lifespan
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Production Description:
MEMS H2S 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
Small sizes and low power consumption
High sensitivity to H2S gases
Fast response and resume
Simple drive circuit, Long lifespan

Application:
Portable and fixed type hydrogen sulfide monitor, and H2S detector.
Technical Parameters：

Part No.			GM-602B
Sensor Type			MEMS
Standard Encapsulation			Ceramic
Detection Gas			H2S & Benzene etc.
Detection Range			0.5~50ppm (H2S)
Standard Circuit Conditions	Loop Voltage	VC	≤24V DC
	Heater Voltage	VH	1.9V±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	≤40mW
	sensitive materials resistance	RS	1KΩ～30KΩ(in 50ppm H2S )
	Sensitivity	S	R0(in air)/Rs(in 50ppm H2S)≥3
	Concentration Slope	α	≤0.6(R200ppm/R50ppmH2S )
Standard test conditions	Temp. Humidity		20℃±2℃；55%±5%RH
Standard test conditions	Standard test circuit		VH:1.9V±0.1V；VC:5.0V±0.1V

10 pcs Winsen GM-602B MEMS H2S Gas Sensor Hydrogen Sulfide Sensor