SMT-02 is a semiconductor type gas sensor designed to detect flammable gas and smog components. The sensor gas sensing material will change accordingly with the concentration of the target gas. A simple circuit can be used to convert the change in conductivity into an output voltage signal corresponding to the gas concentration. This product has good sensitivity to propane, smoke, etc. in a wide concentration range.
● Household gas leak alarm
● Portable gas detection instrument
● Smog and combustible gas alarm
● High sensitivity
● Stable performance
● Fast response and reply time
● Long life time
Item | Parameter |
Detection Gas | Combustible gas, smoke |
Detection Concentration Range | 300~10000ppm (combustible gas) |
Heating Voltage(VH) | 5.0V±0.1V DC or PWM |
Sensor Voltage | ≤24V DC |
Load Resistance | Adjustable |
Heating Element Resistance (RH) | 29Ω±3Ω (room temperature) |
Heating Power | ≤950mW |
Sensitivity | Rs(in air)/Rs(2000ppm C 3 H 8 )≥ 5 |
Output Voltage (V RL ) | 2.5V~4.0V(in 2000ppm C 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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