10 pcs GM-512B MEMS Breath Smell Gas Sensor

[shortdesc]Application:Mini breath detectorFeature:MEMS technology, strong structure, High sensitivity to H2S, Alcohol, and acetone gas[/shortdesc]Production Description:MEMS breath smell 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. Using simple circuit can convert the change of conductivity of the gas concentration corresponding to the output signal.Feature: MEMS technology, strong structure High sensitivity to H2S, Alcohol, and acetone gas Small size, High sensitivity, Low power consumption Fast response and resume, Simple drive circuit, Long lifespan Application:Mini breath detector Technical Parameters： Part No. GM-512B Sensor Type MEMSBreath SmellGas Sensor Standard Encapsulation Ceramic Detection Gas H2S, Alcohol, and acetone gas Detection Range 0.5~50ppm (H2S) Standard Circuit Conditions Loop Voltage VC ≤24V DC Heater Voltage VH 2.5V±0.1V AC or DC (high temp.) 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 10KΩ～100KΩ(in 5ppmH2S) Sensitivity S R0(in air)/Rs(in 5ppmH2S)≥2 Standard test conditions Temp. Humidity 20℃±2℃；55%±5%RH Standard test circuit VH: 2.5V±0.1V (high temp.) VC: 5.0V±0.1V