GM-602B MEMS H2S Gas Sensor
For portable and fixed type hydrogen sulfide monitor, and H2S detector
Applications :
*Portable and fixed type hydrogen sulfide monitor
*Portable and fixed type hydrogen sulfide detector
Product Advantages:
- *MEMS technology, Strong construction
- *High sensitivity to H2S gases
- *Small sizes and low power consumption
- *Fast response and resume
- *Simple drive circuit, Long lifespan
Product Description:
MEMS H2S 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.
Technical Parameters:
| Part No. | GM-602B | ||
| Sensor Type | MEMS | ||
| Standard Encapsulation | Ceramic | ||
| Detection Gas | H2S & Benzene etc. | ||
| Detection Range | 0.5~50ppm (H2S) | ||
| Standard Circuit Conditions | Loop Voltage | Vc | ≤24V DC |
| Heater Voltage | VH | 1.9V±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 | ≤40mW | |
| sensitive materials resistance | RS | 1KΩ～30KΩ(in 50ppm H2S ) | |
| Sensitivity | S | R0(in air)/Rs(in 50ppm H2S)≥3 | |
| Concentration Slope | α | ≤0.6(R200ppm/R50ppmH2S ) | |
| Standard test conditions | Temp. Humidity | 20℃±2℃；55%±5%RH | |
| Standard test circuit | VH:1.9V±0.1V；VC :5.0V±0.1V | ||
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