MEMS Breath Gas Sensor

Cat No: MGS-LJX-0008 Datasheet

Product Name: MEMS Breath Gas Sensor

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Basic Information

Detailed Description	MEMS breath gas sensors utilize MEMS technology to fabricate micro-hot plates on a Si substrate. The gas-sensitive material used is a metal-oxide-semiconductor material with low conductivity in clean air. When the detected gas is present in the ambient air, the sensor's conductivity changes; the higher the concentration of the gas, the higher the sensor's conductivity. A simple circuit can convert the change in conductivity into an output signal corresponding to the gas concentration.
Main Applications	Mini Breath Tester
Product Type	MEMS Breath Gas Sensor
Standard Package	Ceramic packaging
Detecting Gas	Hydrogen sulfide, alcohol, acetone, etc.
Detection Concentration	0.5ppm-50ppm (H2S)
Circuit Voltage	≤24V DC
Heating Voltage	2.5V±0.1V AC or DC
Load Resistor	Adjustable
Heating Resistor	80Ω±20Ω (room temperature)
Heating Power Consumption	≤50mW
Surface Resistance of the Sensitive Body	10KΩ-100KΩ (in 5ppm H2S)
Sensitivity	Ro(in air)/Rs(in 5ppm H2S)≥2
Standard Test Temperature and Humidity	20℃±2℃; 55%RH±5%RH
Standard Test Circuit	Vc: 5.0V±0.1V; VH : 2.5V±0.1V

Features

Employing MEMS technology, the structure is robust and highly sensitive to hydrogen sulfide, alcohol, acetone, and other substances.
Small size, low power consumption, high sensitivity, and fast response recovery.
The drive circuit is simple, stable, and has a long lifespan.

Note

Note	Product specifications are subject to change without notice.

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For industrial/research use only. Not for personal/medical use.