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Explorer HAT Pro - prototype overlay for Raspberry Pi 4B/3B+/3B/2B
Index: PIM-11467
- Reduced price
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Step-Down Voltage Regulator D24V22F3 - 3,3V 2,6A - Pololu 2857
Index: PLL-04977
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Gravity - gas & dust sensors
Measuring devices and systems intended for industrial applications are constantly improved in order to ensure high accuracy of measurements and new, useful functionalities. Such devices increasingly use sensors to measure various physical quantities. The Gravity series of gas and dust sensor modules from DFRobot allow you to build simple and effective applications for measuring and evaluating air quality parameters, including carbon dioxide concentration. Just like other modules from the Gravity series, the gas and dust sensor modules are compatible with Arduino boards and their licensed clones.
Products: 22
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Gravity - CO2 carbon dioxide sensor - SCD41 - IR - I2C - 400-5000 ppm - DFRobot SEN0536
CO2 carbon dioxide sensor from DFRobot equipped with the SCD41 system from Sensirion . It is based on the photoacoustic NDIR detection principle and Sensirion's patented...
Index: DFR-22673
Index: DFR-22673
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
DFrobot Gravity - Carbon Dioxide Sensor CO2 IR V2.0 - analog
High-precision sensor that measures the concentration of CO2 (carbon dioxide) in the air. Equipped with analog output, works with a voltage 5 V. Operates in the range from 400...
Index: DFR-07592
Index: DFR-07592
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
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
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
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
Gravity - MEMS Gas Sensor - CO, CH4, H2, NO2, NH3 - I2C - MiCS-4514 - DFRobot SEN0377
Gas sensor with integrated MiCS-4514 chip made with MEMS technology. What does the gas sensor react to? First of all it detects various harmful gases and volatile organic...
Index: DFR-20378
Index: DFR-20378
Gravity - Analog ORP Sensor Meter Pro - DFRobot SEN0464
The Pro version analog ORP sensor is equipped with a platinum indicator electrode and a silver chloride reference electrode , which provides 24-hour ORP measurement and...
Index: DFR-20674
Index: DFR-20674
Gravity - O2 sensor - I2C / UART - factory calibrated - DFRobot SEN0465
A sensor that allows to test the oxygen content in the air. Factory calibrated, it supports three output modes: analog , I2C and UART . It has up to 32 I2C addresses to...
Index: DFR-20981
Index: DFR-20981
Gravity - Carbon Monoxide CO Detector - I2C / UART - factory calibrated - DFRobot SEN0466
A sensor from DFRobot that allows you to detect carbon monoxide . The module has been factory calibrated so that the probe quickly and accurately measures the concentration of...
Index: DFR-20982
Index: DFR-20982
Gravity - PH3 Hydrogen Phosphide Sensor - I2C / UART - Factory Calibrated - DFRobot SEN0476
A sensor from DFRobot that measures the concentration of hydrogen phosphide . The module has a factory calibrated probe , so the measurement is made quickly and accurately. It...
Index: DFR-20995
Index: DFR-20995
Gravity - HCL Hydrogen Chloride Sensor - I2C / UART - Factory Calibrated - DFRobot SEN0474
A sensor from DFRobot that measures the concentration of hydrogen chloride HCL . The module has a factory calibrated probe that allows you to make precise measurements in a...
Index: DFR-20996
Index: DFR-20996
Gravity - H2 Hydrogen Sensor - I2C / UART - factory calibrated - DFRobot SEN0473
A sensor manufactured by DFRobot to measure hydrogen H2 concentration. The module comes with a factory calibrated probe that allows you to make precise measurements in a...
Index: DFR-20997
Index: DFR-20997
Gravity - CL2 chlorine sensor - I2C / UART - factory calibrated - DFRobot SEN0468
Sensor that detects the concentration of chlorine CL2 in the air. Manufactured by DFRobot, it is equipped with a factory calibrated probe that allows for precise...
Index: DFR-21002
Index: DFR-21002
Gravity - HF hydrogen fluoride sensor - I2C / UART - factory calibrated - DFRobot SEN0475
A sensor that detects the concentration of hydrogen fluoride HF in the air. Manufactured by DFRobot, it is equipped with a factory calibrated probe that allows for precise...
Index: DFR-21010
Index: DFR-21010
Gravity - Electrochemical Oxygen Sensor (0-100Vol) - I2C - DFRobot SEN0496
Electrochemical oxygen sensor from the DFRobot Gravity series. The full-size oxygen sensor uses the original AO2 CiTiceL probe and has a measuring range of 0% to 100% Vol ....
Index: DFR-21479
Index: DFR-21479
Gravity - O3 ozone sensor - I2C / UART - factory calibrated - DFRobot SEN0472
An advanced sensor from DFRobot, it allows you to measure the concentration of ozone O3 in your environment. It is compatible with a wide range of microcontrollers, including...
Index: DFR-20998
Index: DFR-20998
Gravity - NO2 nitrogen dioxide sensor - I2C / UART - factory calibrated - DFRobot SEN0471
A sensor from DFRobot that detects the concentration of NO2 nitrogen dioxide. The module has a factory calibrated probe , which enables precise measurements in a short time....
Index: DFR-20999
Index: DFR-20999
Gravity - SO2 sulfur dioxide sensor - I2C / UART - factory calibrated - DFRobot SEN0470
A sensor that detects the concentration of sulfur dioxide SO2. Manufactured by DFRobot, it has a factory calibrated probe that allows precise measurements to be made in a...
Index: DFR-21000
Index: DFR-21000
Gravity - NH3 ammonia sensor - I2C / UART - factory calibrated - DFRobot SEN0469
A sensor that detects the concentration of NH3 ammonia in the surrounding environment. Manufactured by DFRobot, it is equipped with a factory calibrated probe that allows...
Index: DFR-21001
Index: DFR-21001
Gravity - H2S hydrogen sulfide sensor - I2C / UART - factory calibrated - DFRobot SEN0467
A sensor designed to measure the concentration of hydrogen sulfide H2S in the air. Manufactured by DFRobot, it has a factory calibrated probe that allows you to make precise...
Index: DFR-21003
Index: DFR-21003
See also
- Gravity - starter kits
- Gravity - base hats
- Gravity - accelerometers and gyroscopes
- Gravity - actuators
- Gravity - medical sensors
- Gravity - distance sensors
- Gravity - current sensors
- Gravity - temperature sensors
- Gravity - force sensors and limit switches
- Gravity - light and colour sensors
- Gravity - LED
- Gravity - encoders and potentiometers
- Gravity - converters
- Gravity - communication modules
- Gravity - sound modules
- Gravity - relays
- Gravity - buttons, keys and joysticks
- Gravity - cables
- Gravity - displays
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.