Makeblock mBuild MQ2 smoke and gas sensor, gas detection, mBuild compatibility, 160mA,
Available · 93 piece · 2-5 days
Sensirion SEN54, particulate matter PM1.0-PM10, VOC Index 0-500, 0-90%RH, -10-50°C, I2C, 4.5V
Available · 6 piece · 2-5 days
seeed Grove - Laser PM2.5 Dust Sensor (HM3301)
Available · 4 piece · 2-5 days
MQ-135 gas sensor with analogue and digital output
Available · 100+ piece · 2-5 days
Adafruit BME688 - Temperature, humidity, pressure and gas sensor
Available · 19 piece · 2-5 days
Adafruit BME680 - Temperature, humidity, pressure and gas sensor
Available · 5 piece · 2-5 days
SparkFun Qwiic - CO2 humidity and temperature sensor, SCD41
Available · 2 piece · 2-5 days
DFRobot RS485 NPK soil nutrient sensor, nitrogen, phosphorus, potassium, for Arduino, IP68, 5-30V
Available · 5 piece · 2-5 days
SparkFun Qwiic - Environmental sensor breakout, BME680
Available · 10 piece · 2-5 days
Nova Fitness SDS011 Fine Dust Sensor incl. USB adapter
Available · 62 piece · 2-5 days
Sensirion SEN55, particulate matter PM1.0-PM10, VOC Index 0-500, NOx, 0-90%RH, -10-50°C, I2C, 4.5V
Available · 24 piece · 2-5 days
Adafruit SGP30 Air Quality Sensor Breakout - VOC and eCO2
Available · 10 piece · 2-5 days
seeed Grove - Temperature, humidity, pressure and gas sensor (BME680)
Available · 6 piece · 2-5 days
BME680 Air quality, temperature, pressure, humidity sensor
Available · 5 piece · 2-5 days
seeed Grove - 3-in-1 CO2, Temperature & Humidity Sensor (SCD30)
Available · 5 piece · 2-5 days
Adafruit SCD-30 - NDIR CO2 temperature and humidity sensor
Available · 20 piece · 2-5 days
Adafruit SGP40 Air Quality Sensor Breakout - VOC Index
Available · 9 piece · 2-5 days
Pimoroni BME690 4in1 Luftqualitäts Sensor, Gas, Temperatur, Druck, Luftfeuchte, I2C, Qwiic, 3,3-5V
Available · 6 piece · 2-5 days
seeed Grove - VOC and eCO2 gas sensor (SGP30)
Available · 20 piece · 2-5 days
MAX30101 Pulse, Blood Oxygen Meter, Smoke Sensor Breakout
Available · 11 piece · 2-5 days
Soldered MQ138 Formaldehyd-Sensor, VOC Luftqualitätsmonitor, easyC/Qwiic, digital, 3,3V, LED
Available · 5 piece · 2-5 days
Soldered MQ137 Ammoniak-Sensor Breakout, Onboard ATTiny404, 3,3 V, easyC / Qwiic
Available · 4 piece · 2-5 days
Gas sensors and dust sensors - improve your air quality
Welcome to the fascinating world of gas sensors and dust sensors! Our sensors offer a reliable way to measure and monitor the air quality of your environment. They are perfect for use in microcontroller projects where precise and accurate readings are important. Our gas sensors can measure a variety of gases including carbon monoxide, carbon dioxide, nitrogen dioxide and many more. Our dust sensors can measure the concentration of particles in the air that can be harmful to health. With our sensors you can measure indoor, industrial, and outdoor air quality. Our sensors are easy to integrate and operate and offer high accuracy and reliability. If you are looking for a reliable air quality monitoring solution, our gas sensors and dust sensors for microcontrollers are just what you need!
What are gas sensors and dust sensors?
Gas sensors and dust sensors are both types of sensors used to monitor air quality.
Gas sensors are used to detect and measure various gases in the air. These include gases such as carbon monoxide, carbon dioxide, nitrogen oxides and many others. Gas sensors can be used in a variety of applications including industry, environmental monitoring and household appliances such as gas heaters.
Dust sensors are used to measure the concentration of fine particles in the air, which can be generated by combustion, industrial emissions, and other sources. These particles can be harmful to health if inhaled in high concentrations. Dust sensors can be used in air purifiers, home air quality monitoring systems and in industry to monitor pollutant emissions.
How do gas sensors and dust sensors work?
Gas sensors and dust sensors have different operating principles.
Gas sensors are usually based on chemical or physical reactions between the gases to be detected and the sensor. A common example is the electrochemical gas sensor, which uses an electrode that reacts to the gas to be detected, producing an electrical reaction that can be measured. Other types of gas sensors are based on optical or semiconductor-based technologies.
Dust sensors, on the other hand, typically use optical technologies to measure the concentration of particles in the air. A common example is the so-called "light scattering sensor", which uses a light source and a receiver to measure the scattering of light by particles in the air. The higher the concentration of particles in the air, the more light is scattered, which can be detected and measured by the sensor.
There are also other types of dust sensors, such as the "condensation nucleus counter", which measures the number of particles in the air by condensation of water vapour on the particles. Other sensors can analyse particle size and composition to provide accurate information about the type and source of particles in the air.
What is particulate matter?
Particulate matter is a term that refers to very small particles that are suspended in the air and can come from a variety of sources. These particles can be of both natural and human origin and are so small that they can easily enter the lungs and potentially be harmful to health.
The size of particulate matter is measured in micrometres, with particles less than 10 micrometres in diameter being referred to as fine dust. These particles can come from a variety of sources, including car exhaust, industrial emissions, construction site dust, forest fires and even natural sources such as dust or pollen. Particulate matter can cause people to develop respiratory diseases such as asthma and bronchitis, or make existing conditions such as chronic obstructive pulmonary disease (COPD) worse. The particles can also contribute to heart disease and strokes by promoting inflammation in the body. For this reason, it is important to control and reduce exposure to particulate matter in the air and improve air quality.
What to consider when buying gas sensors?
When buying gas sensors, there are several factors that should be considered. Here are some important points:
Type of gas: make sure the gas sensor is designed for the gas or gases you want to measure. Different sensors are specialised to measure different gases.
Measuring range: Pay attention to the measuring range of the sensor. It is important to ensure that the sensor can measure the concentration of the gas within the desired range.
Sensitivity: Depending on the application, the sensitivity of the sensor can be important. Some applications require a higher sensitivity to measure low concentrations of gases, while other applications require a lower sensitivity.
Response time: The response time of the sensor is the time it takes for the sensor to respond to a change in the amount of gas. If a fast response time is required, a sensor. If a fast response time is required, a sensor that reacts quickly to changes should be selected.
Accuracy and reliability: Ensure that the gas sensor is accurate and reliable. The accuracy of the sensor can be improved through a calibration process.
Environmental factors: It is important to consider where the sensor will be used. If the sensor will be used in an environment with high temperatures or humidity, choose a sensor that is rated for these conditions.
Mounting options: Some sensors can be wall mounted, while others can be integrated directly into ductwork or other equipment.
What to look for when buying dust sensors
Measuring range: Check the measuring range of the sensor to make sure it is suitable for your application.
Sensitivity: The sensitivity of the sensor determines how accurately it can detect fine particles. Make sure the sensitivity is sufficient for your requirements.
Size: Make sure the sensor is suitable for the intended location. A sensor that is too large or too small can affect measurements.
Output signal: Check whether the sensor has an analogue or digital output signal. A digital signal is easier to process, while an analogue signal can provide higher accuracy.
Power supply: Does the sensor require an external power supply or can it run on a battery.