GM-202B MEMS Smoke Gas Sensor

For the fixed or portable smoke detector or alamers for domestic and industrial application

Applications :

*domestic smoke alamers
*industrial smoke alamers
*portable smoke detector

Product Advantages:
  • *MEMS technology, Strong construction
  • *Good shock resistance
  • *Small sizes and low power consumption
  • *Fast response and resume
  • *Simple drive circuit, Long lifespan
Product Description:

MEMS smoke 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. Use simple circuit can convert the change of conductivity of the gas concentration corresponding to the output signal.

Technical Parameters:
Part No. GM-202B
Sensor Type MEMS
Standard Encapsulation Ceramic
Detection Gas CH4, C3H8 &etc.
Detection Range 1~5000ppm (C3H8)
Standard Circuit Conditions Loop Voltage Vc ≤24V DC
Heater Voltage VH 2.5V±0.1V AC or DC
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 1KΩ~30KΩ(in 50ppm C3H8)
Sensitivity S R0(in air)/Rs(in 5000ppmCH4)≥1.5
Concentration Slope α ≤0.6(R100ppm/R30ppmC3H8)
Standard test conditions Temp. Humidity 20℃±2℃;55%±5%RH
Standard test circuit VH:2.5V±0.1V;VC :5.0V±0.1V
The Latest Manual

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