GM-502B MEMS VOC Gas Sensor

For gas leak detection for mobile phones, computers and other consumer electronics applications and breathing gas detection control, smoke alarm indoor & etc.

Applications :

*Gas leak detection for mobile phones, computers and other consumer electronics applications
*Breathing gas detection control
*Indoor smoke alarm

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 combustible 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-502B
Sensor Type MEMS VOC Sensor
Standard Encapsulation Ceramic
Detection Gas Ethanol, formaldehyde, toluene &etc.
Detection Range 1~500ppm
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 ethanol)
Sensitivity S R0(in air)/Rs( in 50ppm ethanol )≥3.0
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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