SMT-039 is a semiconductor type gas sensor used to detect freon gas. The conductivity of the sensor's gas-sensitive material changes as the concentration of freon gas changes. A simple circuit can be used to convert the change in conductivity into an output signal corresponding to the gas concentration.
● High sensitivity
● Stable performance
● Fast response and recovery time
● Strong anti-interference ability
Refrigerant gas detection device for home and environment.
| Item | Parameter |
| Detection Gas | Refrigerant, benzene, alcohol, etc. |
| Detection Concentration Range | 10～1000ppm |
| Heating Voltage(VH) | 5V±0.1V DC or PWM |
| Load Resistance (RL) | Adjustable |
| Sensor Voltage | ≤24V DC |
| Heating Element Resistance (RH) | 65Ω ±10Ω (Room temperature) |
| Heating Power (PH) | ≤300mW? |
| Sensitivity (S) | Rs (in air)/ Rs (in 100ppm refrigerant) ≥ 3 |
| Sensor Resistance (RS) | 30KΩ～200KΩ(in 100ppm refrigerant) |
| Concentration Response Ratio | ≤0.65(R200ppm/R50ppm Freon |
| Test Environment | 20℃±2℃; 65%±5%RH |
Coupon xxxxxxxx has been successfully claimed
Coupon xxxxxxxx repeated collection
Failed to receive coupon xxxxxxx
USD