MQ-135 – Air Quality Control Gas Sensor
The sensitive material of the MQ135 gas sensor is SnO2, which with lower conductivity in clean air. When target pollution gas exists, the sensor’s conductivity gets higher along with the gas concentration rising. Users can convert the change of conductivity to corresponding output signal of gas concentration through a simple circuit. MQ135 gas sensor has high sensitivity to ammonia gas, sulfide, and benzene series steam, also can monitor smoke and other toxic gases well. It can detect kinds of toxic gases and is a kind of low-cost sensor for kinds of applications.
Features:
- Wide detecting scope
- Fast response and High sensitivity
- Stable and long life
- Operating Voltage is +5V
- Detect/Measure NH3, NOx, alcohol, Benzene, smoke, CO2, etc.
- Analog output voltage: 0V to 5V
- Digital output voltage: 0V or 5V (TTL Logic)
- Preheat duration 20 seconds
- Can be used as a Digital or analog sensor
- The Sensitivity of the Digital pin can be varied using the potentiometer
Features/Specs
- Detection Range: 10~1000ppm( ammonia gas, toluene, Hydrogen, smoke)
- Standard Encapsulation: Bakelite, Metal cap
- Gas Detection: Ammonia gas, sulfide, benzene series steam
- Heater Voltage: 5.0V AC or DC
- Loop Voltage: <24VDC
- Sensor Type: Semiconductor
- Load Resistance: Adjustable
- Concentration Slope: <0.6(R400ppm/R100ppm H2)
- Output Voltage: 2.0V ~ 4.0V (in 400ppm H2)
- Sensitivity: Rs(in air)/Rs(in 400ppm H2)>5
- Tem. Humidity: 20C, 55%+/-5%RH
- Target Gas: Air Quality
Applications:
- Used to detect leakage/excess of gases like Ammonia, nitrogen oxide, alcohols, aromatic compounds, sulfide, and smoke.
- Air quality monitors.
Package Includes:
- 1 x MQ-135 – Air Quality Control Gas Sensor
Note: Product Images are shown for illustrative purposes only and may differ from the actual product.
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