Product Introduction
The SMT-025 is a semiconductor type air quality sensor. The sensor housing uses a standard TO-5 metal housing package. When the detected gas exists in the ambient air, the conductivity of the air quality sensor changes accordingly. A simple circuit can be used to convert this conductivity change into an electrical signal output corresponding to the gas concentration.
Main Application
● Home and commercial air purifiers
● Air quality monitor
● Fresh air ventilation system, ventilation fan
● Fresh air ventilation system, ventilation fan
● Range hood, air conditioner
Sensor Characteristics
● Low power consumption
● Highly sensitive to alcohol and smoke
● Long service life and low cost
● Simple application circuit
For more information, Please check our product datasheet or send the consultation to us.
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|
Item |
Parameter |
|
Detection gas |
Alcohol , smog |
|
Detection concentration range |
10～1000ppm(alcohol) |
|
Heating voltage(VH) |
5V±0.1V DC or PWM |
|
Sensor operating voltage |
≤24V DC |
|
Heating element resistance (RH) |
65Ω±10Ω (room temperature) |
|
Heating power consumption (PH) |
380mW±25mW |
|
Sensitivity (S) |
Rs (in air)/ Rs (2000ppm C 3 H 8 )≥5 |
|
Sensor resistance (RS) |
1KΩ-30KΩ (in 500ppm alcohol) |
|
Concentration response ratio |
≤0.6( R50ppm/R30ppm alcohol ) |
|
Test environment |
20℃±2℃; 55%±5%RH |
|
Life time |
10 years |