The SMT-024 has high sensitivity to methane gas. Since it has low sensitivity to volatile alcohol (a common interfering gas in residential environments), it is an ideal sensor for household gas leak detector. The power consumption of SMT -024 is only about 65mA, and the sensor uses a standard TO-5 metal package. A simple circuit can be used to convert the change in target gas concentration into an output electric signal which corresponding to the gas concentration.
● Household gas leak alarm
● Portable gas detector
● Leak detection of gas facilities
● Low power consumption
● High sensitivity to methane
● Long service life and low cost
● Simple application circuit
● Long life time
| Item | P arameter |
| Detection Gas | Methane, natural gas |
| Detection Concentration Range | 300～10000ppm(methane) |
| Heating Voltage(VH) | 5V±0.1V DC or PWM |
| Sensor Voltage | ≤24V DC |
| Heating Element Resistance (RH) | 65Ω±10Ω (room temperature) |
| Heating Power (PH) | 380mW±25mW |
| Sensitivity | Rs (in air)/ Rs (5000ppm CH 4 )≥ 5 |
| Output Voltage (V RL ) | 2.5V～4.0V(in 5000ppm CH 4 ) |
| Concentration Response Ratio | ≤0.6(R5000ppm/R1000ppm CH 4 ) |
| Test Environment | 20℃±2℃; 55%±5%RH |
| Life Time | 10 years |
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