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Product Description
The AZ Delivery MQ-135 air quality sensor as a ready-to-connect module for Raspberry Pi
Easy to use sensor for measuring the concentration of various poison gases such as benzone, alcohol, smoke and contamination in the air. The MQ-135 measures a gas concentration of 10 to 1000ppm and is ideal for recognizing a gas leaf, as a gas alarm or for other robotics and microcontroller projects.
The sensors of the MQ series use a small heating element with an electronic-chemical sensor. They are sensitive to various gases and are suitable for use in rooms.
The sensor has a high sensitivity and quick response time, but needs a few minutes for it to output precise measurements, since the sensor has to heat up first.The measured valuesof the sensorissued as an analog value, which can be easily evaluated with a microcontroller.
This sensor is ready for connecting for a microcontrollersuch as an Arduino board. An AD converter is also required for use with a Raspberry Pi.
Pin assignment:
- VCC - power supply 5V
- GND - mass connection
- Aout - analog output
- Dout - digital output
The module has a potentiometer to adjust the threshold. The sensor only spends a 0 or 1 on the digital pin, depending on the OB the set threshold is exceeded.
Caution:The sensor gets warm in the operation!
Details:
- Resolution: 10 ~ 1000ppm
- Sensitive resistance: 2kΩ to 20kΩ in 100ppm CO
- Accuracy: ≥ 3%
- Reaction time: ≤ 1s
- AN response time after switching on: ≤ 30s
- Heating current: ≤ 180mA
- Heating voltage: 5.0V ± 0.2V / 1.5 ± 0.1V
- Input voltage: 5V
- Heating supply approx.: 350mw
- Dimensions: approx. 30mm (length) * 20mm (width)
The AZ Delivery MQ-135 air quality sensor as a ready-to-connect module for Raspberry Pi
Easy to use sensor for measuring the concentration of various poison gases such as benzone, alcohol, smoke and contamination in the air. The MQ-135 measures a gas concentration of 10 to 1000ppm and is ideal for recognizing a gas leaf, as a gas alarm or for other robotics and microcontroller projects.
The sensors of the MQ series use a small heating element with an electronic-chemical sensor. They are sensitive to various gases and are suitable for use in rooms.
The sensor has a high sensitivity and quick response time, but needs a few minutes for it to output precise measurements, since the sensor has to heat up first.The measured valuesof the sensorissued as an analog value, which can be easily evaluated with a microcontroller.
This sensor is ready for connecting for a microcontrollersuch as an Arduino board. An AD converter is also required for use with a Raspberry Pi.
Pin assignment:
- VCC - power supply 5V
- GND - mass connection
- Aout - analog output
- Dout - digital output
The module has a potentiometer to adjust the threshold. The sensor only spends a 0 or 1 on the digital pin, depending on the OB the set threshold is exceeded.
Caution:The sensor gets warm in the operation!
Details:
- Resolution: 10 ~ 1000ppm
- Sensitive resistance: 2kΩ to 20kΩ in 100ppm CO
- Accuracy: ≥ 3%
- Reaction time: ≤ 1s
- AN response time after switching on: ≤ 30s
- Heating current: ≤ 180mA
- Heating voltage: 5.0V ± 0.2V / 1.5 ± 0.1V
- Input voltage: 5V
- Heating supply approx.: 350mw
- Dimensions: approx. 30mm (length) * 20mm (width)
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