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: