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Combustible gas sensor mems can be built-in mobile phones and other wearable devices GM-402B sensors to detect gas leaks -71182
product detail
Product description:
The MEMS combustible gas sensor utilizes a MEMS process to fabricate a micro-hot plate on a Si-based substrate using a gas-sensitive material that is a metal oxide semiconductor material having a lower conductivity in clean air. When there is a detected gas in the ambient air, the conductivity of the sensor changes. The higher the concentration of the gas, the higher the conductivity of the sensor. Change the conductivity with a simple circuit. The conversion is converted to an output signal corresponding to the gas concentration.
Sensor characteristics:
This product adopts MEMS technology, has strong structure and high sensitivity to flammable gas; it has the advantages of small size, low power consumption, high sensitivity, fast response recovery, simple drive circuit, good stability and long life.
Main application:
Applicable to the detection of gas leaks in consumer electronics applications such as mobile phones and computers; also applicable to flammable gas leak monitoring devices, gas leak detectors, fire/safety detection systems for household and commercial use.
Product parameters:
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Product Type: MEMS combustible gas sensor
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Detection gas: methane, propane, etc.
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Detection concentration: 1 ~ 10000ppm (C3H8)
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Loop voltage VC: ≤24V DC
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Heating voltage VH : 2.8V ± 0.1V AC or DC
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Load resistance RL: adjustable
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Heating resistor RH : 80Ω ± 20Ω (room temperature)
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Heating power consumption PH : ≤ 80mW
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Sensitive body resistance RS: 1KΩ～30KΩ (in 5000ppmCH4)
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Sensitivity S :R0(in air)/Rs(in 5000ppmCH4)≥2
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Concentration slope α: ≤0.9 (R5000ppm/R1000ppmCH4)
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Temperature, humidity: 20 °C ± 2 ° C; 55% ± 5% RH
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Standard test circuit: VH: 2.8V ± 0.1V; VC: 5.0V ± 0.1V
Circuit diagram:
On Dec 3, 2023 at 19:54:11 PST, seller added the following information: