10 pcs GM-512B MEMS Breath Smell Gas Sensor

$59.00
Application:Mini breath detector
Feature:MEMS technology, strong structure, High sensitivity to H2S, Alcohol, and acetone gas

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Availability: 493 In Stock
Categories: Environmental Health, MEMS Gas Sensors & Modules, MEMS Sensor, VOC Detection

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
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