Product Introduction
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.
Sensor Characteristics
● High sensitivity
● Stable performance
● Fast response and recovery time
● Strong anti-interference ability
Main Application
Refrigerant gas detection device for home and environment.
For more information, Please check our product datasheet or send the consultation to us at any time.
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|
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 |
