GM-502B MEMS VOC Gas Sensor Product 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.
GM-502B MEMS VOC Gas Sensor Character
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 | 80±20room temperature |
Heater consumption | PH | 50mW | |
sensitive materials resistance |
RS | 1K30K(in 50ppm ethanol) | |
Sensitivity | S | R0(in air)/Rs( in 50ppm ethanol )3.0 | |
Standard test conditions |
Temp. Humidity | 20±255%±5%RH | |
Standard test circuit | VH:2.5V±0.1VVC :5.0V±0.1V |
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