GM-702B MEMS Carbon Monoxide Gas Sensor
For the detection of carbon monoxide leakage for residential use or industrial use
Applications :
*the detection of carbon monoxide leakage for residential use
*the detection of carbon monoxide leakage for industrial use
Product Advantages:
- *MEMS technology, Strong construction
- *Good shock resistance
- *Small sizes and low power consumption
- *Fast response and resume
- *Simple drive circuit, Long lifespan
Product Description:
MEMS carbon monoxide 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-702B | ||
| Sensor Type | MEMS CO Gas Sensor | ||
| Standard Encapsulation | Ceramic | ||
| Detection Gas | CO gas | ||
| Detection Range | 5~5000ppm (CO) | ||
| Standard Circuit Conditions | Loop Voltage | Vc | ≤24V DC |
| Heater Voltage | VH | 2.5V±0.1V AC or DC (high temp.) 0.5V±0.1V AC or DC (low temp.) | |
| Heating Time | TL | 60s±1s (high temp.) 90s±1s (low 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 | 1KΩ～30KΩ(in 150ppm CO) | |
| Sensitivity | S | R0(in air)/Rs(in 150ppmCO)≥3 | |
| Standard test conditions | Temp. Humidity | 20℃±2℃；55%±5%RH | |
| Standard test circuit | VH: 2.5V±0.1V (high temp.) 0.5V±0.1V (low temp.) VC : 5.0V±0.1V | ||
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