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Gravity - gas & dust sensors

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DFRobot Gravity - CO2 carbon dioxide sensor - electrochemical

The sensor determines the concentration of CO2 (carbon dioxide) in the air. It is equipped with digital and analog output that works with voltage of 5 V. The kit includes a...
Index: DFR-04487
Index: DFR-04487
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Regular price €52.91 Price €52.91

DFrobot Gravity - Carbon Dioxide Sensor CO2 IR - analog

High-precision sensor that measures the concentration of CO2 (carbon dioxide) in the air. Equipped with analog output, works with a voltage from 4.5 V to 5.5 V. Operates in the...
Index: DFR-07592
Index: DFR-07592
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Regular price €60.23 Price €60.23

Gravity: Analog Infrared CO2 Sensor For Arduino (0~50000 ppm)

High-precision sensor that measures the concentration of CO2 (carbon dioxide) in the air. It is equipped with an UART interface, it works with a voltage from 4.5 V to 5.5 V. It...
Index: DFR-08110
Index: DFR-08110
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Regular price €92.79 Price €92.79

DFRobot Gravity - analog X dissolved oxygen sensor - SEN0237-A

Dissolved oxygen analog sensor compatible with Arduino. The module measures the concentration of dissolved oxygen in the water to determine its quality. It can be used, for...
Index: DFR-09968
Index: DFR-09968
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Regular price €180.23 Price €180.23

Gravity - ozone sensor I2C - electrochemical - DFRobot SEN0321

Electrochemical ozone sensor for accurate O3 concentration measurement in the environment. Its measuring range is from 0 ppm to 10 ppm. It communicates via the I2C...
Index: DFR-16575
Index: DFR-16575
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Regular price €50.93 Price €50.93

Gravity - alcohol sensor 0-5ppm - I2C / UART - DFRobot SEN0376

A sensor manufactured by DFRobot that enables accurate measurement of alcohol concentration in air. It is used when measuring low alcohol concentration, in breathalysers ,...
Index: DFR-19016
Index: DFR-19016
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Regular price €30.00 Price €30.00

Air purity sensors

Modern designs of air purity sensors are very often electrochemical sensors. The principle of operation of such a sensor usually consists in conversion of energy of a chemical reaction into a voltage signal, which is supplied to a further part of the measuring device's system. The body of such a sensor is usually an electrode made of metal oxides, which depending on the chemical composition reacts with specific gases contained in the atmosphere. Among constructions of air quality sensors we can also find photoionisation sensors and optical sensors with infrared diode.

Accuracy of air quality measurement

Just like any other measurement technique, also in the case of measurements with gas and dust sensors there are factors which may significantly influence the accuracy of the final measurement result. In this case, the presence of other gases and chemicals that the sensor does not detect, the temperature, pressure and humidity of the measurement environment, as well as the electromagnetic compatibility of the sensor's measuring system all affect the accuracy of the measurement. Not without significance is also the construction and accuracy of the measuring system cooperating with the sensor, i.e. the bit resolution of the ADC and the time of measurement data acquisition. The designers from the R&D department of DFRobot met these expectations by creating the Gravity series, which also includes high-quality sensors for measuring the concentration of gases in the surrounding atmosphere.

Carbon dioxide sensors from DFRobot

Carbon dioxide sensors offered by Botland store from DFRobot guarantee high accuracy measurement ofCO2 concentration in the air, even in extremely different environmental conditions. The measurement takes place in real time.CO2 sensors from DFRobot were designed to be fully compatible with Arduino base modules. The manufacturer has prepared sample program codes that you can download for free and upload to the microcontroller memory on your Arduino base board. To connect the carbon dioxide sensor to the Arduino base module, connect the digital output to any pin in the "DIGITAL" section of the Arduino (the port should be set to input mode), and connect the analog output to any pin in the "ANALOG" section.CO2 sensors from DFRobot are electrochemical sensors, which in contrast to standard IR sensors, have a much larger measuring range. The principle of operation of such a sensor is based on the analysis of chemical reactions in a galvanic cell. Reactions involving a solid electrolyte result in the release of carbon dioxide.CO2 concentration sensors from the Gravity series can be used in the design of real-time air quality monitoring instruments and in agriculture to study fermentation.