Description

DF Robot Oxygen Sensor - I2C

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 stablility 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, can be calibrated in the air and 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. With simple Gravity interface and practical sample code, you can build your own oxygen concentration monitor easily and conveniently.

Quick Spec

Gas Detection: Oxygen (O2)
Operating Voltage: 3.3 ~ 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)
Dimensions: 37 x 27 x 24.5mm
Net Weight: 37g

Wiring Diagram

Sample Code



/*!
  * @file  ReadOxygenData.ino
  * @brief Read oxygen concentration ,The unit is concentration percent (% vol).
  * @n step: we must first determine the iic device address, will dial the code switch A0, A1 (ADDRESS_0 for [0 0]), (ADDRESS_1 for [1 0]), (ADDRESS_2 for [0 1]), (ADDRESS_3 for [1 1]).
  * @n       And then read the data.
  * @n note: it takes time to stable oxygen concentration, about 8 minutes.
  *
  * @n The experimental phenomenon is that a certain percentage of oxygen concentration is printed on the serial port.
  * @n Because the oxygen concentration in oxygen air is certain, the data will not be greater than 25% vol.
  *
  * @copyright   Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
  * @licence     The MIT License (MIT)
  * @author      ZhixinLiu([email protected])
  * @version     V0.2
  * @date        2019-10-10
  * @get         from https://www.dfrobot.com
  * @url   */
#include "DFRobot_OxygenSensor.h"

#define COLLECT_NUMBER    10             // collect number, the collection range is 1-100.
#define Oxygen_IICAddress ADDRESS_3
/*   iic slave Address, The default is ADDRESS_3.
       ADDRESS_0               0x70      // iic device address.
       ADDRESS_1               0x71
       ADDRESS_2               0x72
       ADDRESS_3               0x73
*/

DFRobot_OxygenSensor Oxygen;
void setup() 
{
  Serial.begin(9600);
  while(!Oxygen.begin(Oxygen_IICAddress)) {
    Serial.println("I2c device number error !");
    delay(1000);
  }
  Serial.println("I2c connect success !");
}

void loop()
{
  float oxygenData = Oxygen.ReadOxygenData(COLLECT_NUMBER);
  Serial.print(" Oxygen concentration is ");
  Serial.print(oxygenData);
  Serial.println(" %vol");
  delay(1000);
}