The gas-sensitive material used in the SMT-05 gas sensor is a semiconductor material with low conductivity in clean air. When there is a detection gas in the environment where the sensor is located, the conductivity of the sensor increases with the increase of the concentration of combustible gas in the air. By using a simple circuit, the change in conductivity can be converted into an output signal corresponding to the gas concentration. This product, especially liquefied gas (propane), is a low-cost sensor suitable for a variety of applications.
● Civilian gas leak detector and alarm
● Portable gas detector
● High sensitivity
● Stable performance
● Fast response and recovery time
● Strong anti-interference ability
● Long life time
| Item | Parameter |
| Detection Gas | Propane, methane |
| Detection Concentration Range | 300～10000ppm (methane, propane) |
| Heating Voltage(VH) | 5V±0.1V |
| Sensor Operating Voltage | ≤24V DC |
| Heating Element Resistance (RH) | 29Ω±3Ω (room temperature) |
| Heating Power (PH) | ≤950mW |
| Sensitivity | Rs (in air)/ Rs (2000ppm C 3 H 8 )≥ 5 |
| Output Voltage (V RL ) | 2.5V～4.0V(in 2000ppmC 3 H 8 ) |
| Concentration Response Ratio | ≤0.6(R3000ppm/R1000ppm C 3 H 8 ) |
| Test Environment | 20℃±2℃; 55%±5%RH |
| Life Time | 10 years |
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