300~10000ppm Methane Gas Sensor For Domestic Gas Leakage Detectors
Methane Gas Sensor Principle Introduction:
The sensing material of Methane Gas Sensor is tin dioxide SnO2, which has low conductivity in clean air. When the combustible gas exists, the conductivity of the sensor will be raise according to the gas concentration goes up. Through a simple circuit, to convert the changes of conductivity to correspond to the gas concentration.
Methane Gas Sensor has high sensitivity to methane, propane butane etc. combustible gas. The sensor can work in high temperature. It is low cost sensor and can be used in different applications.
Methane Gas Sensor Feature:
* High sensitivity to methane
* Long life and low cost
* Fast response and recovery
Methane Gas Sensor Technical Parameters :
Item | Specification |
Target Gas | Methane /CH4 |
Measurement Range | 300~10000ppm(CH4) |
Heater Voltage(Vh) | 5V±0.1V AC or DC |
Loop Voltage | ≤24V DC |
Heater Resistance(Rh) | 29Ω±3Ω(Room temperature) |
Heater Power Consumption(Ph) | ≤950mW |
Sensitivity | Rs(in air)/Rs(5000ppm CH4)≥ 5 |
Concentration Slope(α) | ≤0.6(R5000ppm/R1000ppm CH4) |
Output In Target Gas | 2.5~4V(in 5000ppm CH4) |
Testing Condition | 20℃±2℃;55%±5%RH |
Oxygen concentration in used place | 21%, no less than 18%,If used in low oxygen concentration, pleasure contact for detail |
Life Expectancy | 10 years |
Application
Liquefied petroleum gas, natural gas, coal gas monitoring device suitable for home or industrial. Excellent resistance to
alcohol, smoke interference ability