10 pcs Winsen GM-202B MEMS Smoke Gas Sensor

[shortdesc]Application:Mostly used in the fixed or portable smoke detector or alamers for domestic and industrial application.Feature:MEMS technology, Strong construction,High sensitivity to combustible gases,Small sizes and low power consumption[/shortdesc]Production 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.Feature: MEMS technology, Strong construction High sensitivity to combustible gases Small sizes and low power consumption Fast response and resume Simple drive circuit, Long lifespan Application:Mostly used in the fixed or portable smoke detector or alamers for domestic and industrial application.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