SMT-014 is a semiconductor type gas sensor for detecting combustible gases. The conductivity of the sensor's gas-sensitive material changes with the concentration of the target gas. A simple test circuit can be used to convert the change in conductivity into an output signal corresponding to the gas concentration.
● Civilian gas leak detector and alarm
● Portable gas detector
● High sensitivity
● Stable performance
● Fast response and reply time
● Good shock resistance
● Good adaptability to high and low temperature working
● Long life
Sensor Parameter
| Item | Parameter |
| Detection Gas | Methane |
| Detection Concentration Range | 300～10000ppm(methane) |
| Heating Voltage(VH) | 5V±0.1V DC o PWM |
| Sensor Operating Voltage | ≤24V DC |
| Heating Element Resistance (RH) | 55Ω±3Ω (room temperature) |
| Heating Power (PH) | ≤400mW |
| Sensitivity (S) | Rs (in air)/ Rs (5000ppm CH 4 )≥ 5 |
| Output Voltage (VS) | 2.5V～4.0V(in 5000ppm CH 4 ) |
| Concentration Response Ratio | ≤0.6(R 5000ppm/R1000ppm CH 4 ) |
| Test Environment | 20℃±2℃; 55%±5%RH |
| Life Time | 5 years |
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