Product description

   MEMS  Nitrogen Dioxide  gas sensors use MEMS technology to make micro-hot plates on Si-based substrates. The gas-sensitive materials used are metal oxide semiconductor materials with low 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. Using a simple circuit, the change in conductivity can be converted into an output signal corresponding to the gas concentration.

main application:
Use for standby and protable  Nitrogen Dioxide Detector

Product model: GM-102B

Product type: MEMS  Nitrogen Dioxide  gas sensor

Standard package: ceramic package

Detection gas: ammonia

Detection concentration: 0.1~10ppm(NO2)

Standard circuit conditions

Loop voltage VC: ≤24V DC

Heating voltage VH: 2.0V±0.1V AC or DC

Load resistance RL: adjustable

Gas sensor characteristics under standard test conditions

Heating resistance RH: 80Ω±20Ω (room temperature)

Heating power consumption PH: ≤45mW

Sensitive body resistance RS: 1KΩ~30KΩ (in 50ppmNH3)

Sensitivity S: R0(in air)/Rs(in 50ppmNH3)≥3

Concentration slope α: ≤0.9(R200ppm/R50ppmNH3)

Standard test conditions

Temperature, humidity 20ºC±2ºC; 55%±5%RH

Standard test circuit:

VH: 2.0V±0.1V;
VC: 5.0V±0.1V