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Gravity: I2C Oxygen Sensor Compatible with Esp32 (0-25% Vol) | High Sensitivity High Stablility High Anti-Interference | Suitable for Portable Air Quality Monitoring Device

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$58.90

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About this item

  • The Gravity: I2C Oxygen Sensor is based on electrochemical principles and it can measure the ambient O2 concentration accurately and conveniently.
  • With high anti-interference ability, high stability, and high sensitivity, this Arduino-compatible oxygen sensor can be widely applied to fields like portable device, air quality monitoring device, and industries, mines, warehouses and other spaces where air is not easy to circulate.
  • This compact DFRobot oxygen sensor supports I2C output, it can be calibrated in the air, can accurately measure the oxygen concentration in the environment. It is compatible with many mainboards like Arduino Uno, esp32, Raspberry Pi and so on.
  • Its effective range is 0~25%Vol, and resolution can reach to 0.15%Vol. It supports wide range input voltage: 3.3V to 5.5V. Moreover, the lifetime is as long as 2 years.


Product Description

This Gravity: I2C Oxygen / O2 Sensor is based on electrochemical principles and it can measure the ambient O2 concentration accurately and conveniently. With high anti-interference ability, high stablility and high sensitivity, this arduino-compatible oxygen / O2 sensor can be widely applied to fields like portable device, air quality monitoring device, and industries, mines, warehouses and other spaces where air is not easy to circulate.

This compact dfrobot oxygen / O2 sensor supports I2C output, it can be calibrated in the air, can accurately measure the oxygen concentration in the environmentit. It is compatible with many mainboards like Arduino Uno, esp32, Raspberry Pi and so on. Its effective range is 0~25%Vol, and resolution can reach to 0.15%Vol. It supports wide range input voltage: 3.3V to 5.5V. Moreover, the lifetime is as long as 2 years. With simple Gravity interface and practical sample code, you can build your own oxygen / O2 concentration monitor easily and conveniently.

Board Overview of Electrochemical Oxygen / O2 Sensor

Board Overview

  • SDA: I2C System Data Line
  • SCL: I2C System Clock Line
  • GND: -
  • VCC: +

Version upgrade history

-V1.0 I2C address can be switched 0X72, 0X73 -V1.1 I2C address can be switched 0X70, 0X71, 0X72, 0X73(upgrade to V1.1 on 2021/12/13)

Features

  • Quick calibration function
  • High sensitivity
  • I2C digital Interface
  • Compatible with both 3.3V and 5V micro-controllers
  • Polarity protection
  • Longer sensor life
Calibration

Calibration

  • The oxygen / O2 sensor can be calibrated using the characteristic that the oxygen content in the atmosphere is 20.9%.

  • Calibration Method: Place the oxygen / O2 sensor in the outdoor environment, after the sensor data is stable, long press the calibration button on the sensor for 2 seconds, the sensor will be calibrated.
Connection Diagram

Connection Diagram

Precautions:

  • Disable soldering during installation;
  • Pins are forbidden to break and bend;
  • Electrolyte leakage will cause damage, please do not disassemble the sensor at will;
  • The sensor avoids contact with organic solvents (including silica gel and other adhesives), paints, chemicals, fuel oils and high-concentration gases;
  • All electrochemical sensors cannot be completely encapsulated with resin materials, nor can they be immersed in an oxygen-free environment, otherwise the performance of the sensor will be damaged;
  • All electrochemical sensors should not be used in environments containing corrosive gases, which can damage the sensor;
  • When testing and applying the sensor, the front vertical intake must be avoided;
  • The intake surface of the sensor must not be blocked or polluted;
  • The waterproof and breathable membrane above the sensor is strictly forbidden to be opened or damaged;
  • The sensor must not be subject to excessive impact or vibration;
  • Do not use the case if it is damaged or deformed;
  • In a high-concentration gas environment, it is slow to return to the initial state after long-term use;
  • When the sensor is stored, the working electrode and the reference electrode should be in an open state;
  • It is forbidden to encapsulate the sensor with hot melt adhesive or sealant with curing temperature higher than 80℃;
  • It is forbidden to store and use in high concentration acid gas for a long time.

SPECIFICATION

Detection of Gas oxygen / O2
Operating Voltage 3.3 to 5.5V DC
Output Signal I2C output
Measurement Range 0~25%Vol
Maximum Measurement limit 30%Vol
Resolution 0.15%Vol
Sensitivity (0.10±0.05) mA (in the air)
Stability <2% (Every month)
Repeatability <2%
Response Time ≤15 seconds
Operating Temperature -20～50℃
Operating humidity 0～99%RH (no condensation)
Pressure Range standard atmospheric pressure ±10%
Lifetime > 2 years (in the air)
Dimension(L x W x H) 37 * 27 * 24.5 mm/1.46 * 1.06 * 0.97 inches
Weight 0.037kg

Cliente de
Reviewed in Mexico on March 12, 2025
Funciono muy bien en el prototipo