ShenzhenYijiajie Electronic Co., Ltd.
The company advocates the corporate culture of "integrity and dedication, pragmatic innovation, unity and cooperation, diligence and progress", pays attention to standardized management, advocates
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Product Description:
GM-702B MEMS Process Ceramic Encapsulated Carbon Monoxide Hydrogen Sensors Are Used In Electronic Products Such As Mobile Phones
Features:
MEMS carbon monoxide/hydrogen sensor consists of a MEMS process-based SI-based microhot plate and a metal oxide semiconductor material with low conductivity in clean air. When the sensor is in a gas environment, the conductivity of the sensor changes with the concentration of the detected gas in the air. The higher the concentration of this gas, the higher the conductivity of the sensor. A simple circuit can be used to convert the change in conductivity into an output signal corresponding to the concentration of that gas.
Product advantage
Low power consumption, high sensitivity, MEMS process, robust structure, simple drive circuit, fast response recovery characteristics
Main application
Detection gas type: Carbon monoxide (CO) : 10-5000ppm; Hydrogen (H2) : 10-500ppm
Suitable for mobile phone and other electronic products, home, business and other occasions carbon monoxide or gas leak monitoring device, gas leak detector, fire/safety detection system.
Technical index
Product model GM-702B
Product Type MEMS Carbon Monoxide gas sensor
Standard package Ceramic package
Detection gas carbon monoxide
Detection concentration 5-5000ppm(CO)
Standard circuit condition Loop voltage Vc ≤24V DC
Heating voltage VH 2.5V±0.1V ACorDC (High temperature)
0.5V±0.1V ACorDC (Low temperature)
The load resistance RL is adjustable
Gas sensor characteristics under standard test conditions Heating resistance RH 80Ω±20Ω (room temperature)
Heating power consumption PH ≤50mW
Sensor surface resistance Rs 1KΩ-30KΩ(in 150ppm CO)
Sensitivity S Rs(in air)/Rs(150ppm CO)≥3
Standard test conditions Temperature, humidity 20℃±2℃; 55%±5%RH
Standard test circuit Vc:5.0V±0.1V
VH:2.5V±0.1V (high temperature); 0.5V±0.1V (low temperature)
Specifications:
| Detection concentration | 5-5000ppm(CO) |
| Loop voltage Vc | Vc ≤24V DC |
| Heating voltage VH | ≤24V DC |
| Heating power consumption | PH ≤50mW |
