Hign-concerned Chemical : None
Origin : China
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
The line layout is compact and regular, with good electrical insulation and mechanical stability, and can maintain stable performance under different temperature and humidity environments to ensure accuracy and reliability.
In circuit design, carefully planned lines are like precision transportation networks, and lines of different widths and spacings undertake different currents and signals transmission tasks respectively. The key signal lines are impedance matching processing, which greatly reduces signal reflection and attenuation and ensures the stable transmission of high-frequency signals.
All kinds of electronic components are soldered on the circuit board, and the solder joints are full, round, and firm and reliable. Core components like chips are perfectly connected to the circuit board through fine packaging processes to achieve high-speed data processing and interaction.
This circuit board has a wide range of responses in many fields. Whether in the industrial control field that requires extremely high stability or consumer electronics field that pursues extreme performance, it can provide solid guarantees for the stable operation of the equipment with its excellent design and reliable performance, and help various electronic devices play a powerful role.
