Product description: Fermion - Air quality sensor - SGP40 - DFRobot SEN0392
Air qualitysensor from the companyDFRobot. The module is equipped with a chipSGP40produced by a popular company, which is Sensirion. Through the SGP40 chip, the module measures the VOC air quality in the rangefrom 0 ppm to 1000 ppm. Measured values are presented in the form of VOCindex indications- taking the value from 0 to 500. Air quality depends on what range the reading is in - the lower VOC index value, the cleaner the air. The module uses theI2Cbus to communicate with the connected controller board. The longer thesensoris used, the better the sensitivity and accuracy of the trend and change. In an environment with potentially low air pollution, the sensor can obtain an accurate VOC indicator almost immediately after use. When measured in a heavily polluted environment, the sensor can obtain an accurate VOC indicator approximately 1 hour after being turned on.
Air Quality Sensor - SGP40 - from DFRobot.
Product compatible withArduinoandRaspberry Pi
The manufacturer provides a detaileduser guidethat makes it significantly easier to get started with the module. It also provides libraries forArduino IDEandPythonenvironments.
The kit also includes a 2.54mm raster goldpin strip.
Functional overview
- Low current consumption - about 2.6 mA
- The module has built-in temperature and humidity compensation, no need for calibration
- Data presented via VOC indicator for direct indication of air quality
- Used in applications such as air purifiers, kitchen hoods, thermostats, and indoor air quality monitoring systems
Kit contents
- Air quality sensor - SGP40
- 1x4 goldpin strip - 2,54 mm pitch
VOC index
- from 0 to 100 - air quality: excellent
- 100 to 200 - air quality: good
- 200 to 300 - air quality: slightly polluted
- 300 to 400 - air quality: slightly polluted
- 400 to 500 - air quality: very polluted
Interpretation of the VOC index readings.
Schematic of the connection of the DFRobot sensor with the Arduino equivalent circuit board. The board is not part of the kit, it can be purchased separately.
Leads description and connection diagram
The sensorhas solderfieldswheregoldpinconnectors should be soldered. Kit includes dedicated 1x4 strip with2,54mmpitch. Using this type of connector allows you to connect the sensor with a controller module - Raspberry Pi or Arduino and boards related to them. You should connect the components according to the relationship:
- VCC (+) - power supply from 3.3 V to 5 V
- GND (-) - system ground
- SCL (C) - I2C bus clock line
- SDA (D) - I2C bus data line
Technical specification of the sensor
- Type: air quality sensor
- Embedded circuit: SGP40
- Measurement range:
- VOC: 0 ppm to 1000 ppm
- VOC index: 0 to 500
- Power supply: from 3.3 V to 5 V
- Operating current: 2.6 mA
- Start-up time: 10 s
- Response time: 2 s to 3 s
- Communication interface: I2C bus
- Interface address: 0x59
- Operating temperature range: from -10°C to 50°C
- Storage temperature range: from 5°C to 30°C
- Operating humidity range: 0% to 90% RH
- Dimensions: 18 x 11.5 mm
DFRobot - air quality sensor.
