Products
MQ-135 Semiconductor Air Pollution Sensor MQ135 Air Quality Pollution Gas Sensor -51525
product detail
MQ Series Sensors MQ135 MQ2 MQ3 MQ5 MQ7 Detecting Gas Sensor Detector MQ-135 MQ-2 MQ-3 MQ-5 MQ-7
MQ3:
Used for post-drink supervision and detection of motor vehicles and other risky workers and detection of ethanol vapor in other places.
Specification:
- Gas: Alcohol (ethanol)
- Detection range: 10 ~ 1000ppm alcohol
- Characteristic gas: 125ppm alcohol
- Sensitivity: R in air/Rin typical gas≥5
- Sensitive body resistance: 1 ~ 20KΩ in air
- Response time ≤ 10s (70% Response)
- Recovery time ≤ 30s (70% Response)
- Heating resistance: 31Ω±3Ω
- Heating current ≤180mA
- Heating voltage: 5.0V ± 0.2V
- Heating power ≤900mW
- Measuring voltage ≤24V
MQ2:
(Gas leak monitoring devices for homes and factories, suitable for detection of liquefied gases, butane, propane, methane, alcohol, hydrogen, fumes, etc.)
- Gas: smoke
- Detection range: 300 to 10000ppmm
- Characteristic gas: 1000ppmm isobutane
- Sensitivity: R in air/Rin typical gas≥5
- Sensitive body resistance: 1KΩ to 20KΩ in 50ppm toluene
- Response time: ≤10s
- Recovery time: ≤30s
- Heating resistance: 31Ω±3Ω
- Heating current: ≤180mA
- Heating voltage: 5.0V ± 0.2V
- Heating power: ≤900mW
- Measuring voltage: ≤24V
MQ135:
The gas sensitive material used in the MQ135 gas sensor is tin dioxide (SnO2) with lower conductivity in clean air. When there is a polluting gas in the environment where the sensor is located, the conductivity of the sensor increases as the concentration of the polluting gas in the air increases. The change in conductivity can be converted to an output signal corresponding to the gas concentration using a simple circuit.
The MQ135 gas sensor is highly sensitive to ammonia, sulfides, and benzene vapors, and is ideal for monitoring smoke and other harmful gases. This sensor detects a wide range of harmful gases and is a low-cost sensor for a wide range of applications.
Characteristics:
- Good sensitivity to harmful gases over a wide range of concentrations
- High sensitivity to ammonia, sulfide, benzene, etc.
- Long life, low cost
- Simple drive circuit
Application:
- Household air pollution alarm
- Industrial air pollution alarm
- Portable air pollution detector
MQ5:
Gas leakage monitoring device for home and factory, suitable for detection of liquefied gas, butane, propane, methane, hydrogen, artificial gas, etc.
Features:
- Wide range of detection
- High sensitivity
- Fast response recovery
- Excellent stability
- long life
- Simple drive circuit
- specification