[shortdesc]Application:Mini breath detector
Feature:MEMS technology, strong structure, High sensitivity to H2S, Alcohol, and acetone gas
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Production Description:
MEMS breath smell 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. Using simple circuit can convert the change of conductivity of the gas concentration corresponding to the output signal.
Feature:

MEMS technology, strong structure
High sensitivity to H2S, Alcohol, and acetone gas
Small size, High sensitivity, Low power consumption
Fast response and resume, Simple drive circuit, Long lifespan

Application:
Mini breath detector
Technical Parameters：

Part No.			GM-512B
Sensor Type			MEMSBreath SmellGas Sensor
Standard Encapsulation			Ceramic
Detection Gas			H2S, Alcohol, and acetone gas
Detection Range			0.5~50ppm (H2S)
Standard Circuit Conditions	Loop Voltage	VC	≤24V DC
	Heater Voltage	VH	2.5V±0.1V AC or DC (high temp.)
	Load Resistance	RL	Adjustable
Sensor character under standard test conditions	Heater Resistance	RH	80Ω±20Ω (room temperature)
	Heater consumption	PH	≤50mW
	sensitive materials resistance	RS	10KΩ～100KΩ(in 5ppmH2S)
	Sensitivity	S	R0(in air)/Rs(in 5ppmH2S)≥2
Standard test conditions	Temp. Humidity		20℃±2℃；55%±5%RH
Standard test conditions	Standard test circuit		VH: 2.5V±0.1V (high temp.) VC: 5.0V±0.1V

10 pcs GM-512B MEMS Breath Smell Gas Sensor