10 pcs GM-502B MEMS VOC Gas Sensor

[shortdesc]Application:Gas leak detection for mobile phones, computers and other consumer electronics applications, also for breathing gas detection control, smoke alarm indoor etc.Feature:MEMS technology, Strong construction,Small sizes and low power consumption,Fast response and resume[/shortdesc]Production Description:MEMS VOC 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 Small sizes and low power consumption Fast response and resume Simple drive circuit High sensitivity Application:Gas leak detection for mobile phones, computers and other consumer electronics applications, also for breathing gas detection control, smoke alarm indoor etc.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) Concentration slope α ≤0.9(R200ppm/R500ppm 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