DFRobot - Gravity: Factory Calibrated Electrochemical Oxygen / O2 Sensor (0-25%Vol, I2C & UART)

This is a sensor that detects oxygen / O2 concentration and supports three output modes: analog, I2C, and UART. The probe has been calibrated at the factory, which can quickly and accurately measure the concentration of oxygen / O2 in the environment. Can be widely applied to fields like portable devices, air quality monitoring devices, industries, mines, warehouses, and other spaces where the air is not easy to circulate.

The probe adopts the electrochemical principle, has the characteristics of strong anti-interference ability, high stability, high sensitivity, etc., and the service life is as long as two years. The sensor has 32 modifiable I2C addresses, an integrated temperature compensation algorithm, and a threshold alarm function, It has good compatibility with mainstream main control devices such as Arduino, ESP32, and Raspberry Pi. The easy-to-use Gravity interface, coupled with our sample code, can quickly build an oxygen / O2 concentration detector.

DFRobot has introduced 12 gas detection sensors in this series, CO, O2, NH3, H2S, NO2, HCL, H2, PH3, SO2, O3, CL2, HF, which are used in exactly the same way and data format, so you can combine them according to your needs.

Selection Guide

Product Name

Gravity: Electrochemical Oxygen / O2 Sensor (0-25%Vol, I2C)

Gravity: Factory Calibrated Electrochemical Oxygen / O2 Sensor (0-25%Vol, I2C & UART)

Gravity: Electrochemical Oxygen / O2 Sensor (0-100%Vol, I2C)

Figure

SKU

SEN0322

SEN0465

SEN0496

Detection Range

0~25%Vol

0~25%Vol

0~100%Vol

Calibration Method

Manual calibration

Factory calibration

Manual calibration

Output Signal

I2C

I2C/UART/Analog

I2C

Working Principle

Electrochemical

Electrochemical

Electrochemical

Stability

Response Time

≤15S

≤15S

0.1%~20.9%

Operating Pressure Range

101kPa±10%

101kPa±10%

0.5 - 2.0 Bar

Temperature Compensation

×

√

×

Add to Cart

• Strong anti-interference ability
• High stability
• High sensitivity

• Air quality monitoring device
• Mining air detection
• Environmental protection
• Smart Farming

• Detection Gas: Oxygen (O2)
• Detection range: 0~25%Vol
• Working Voltage: 3.3～5.5V DC
• Working Current: ＜5mA
• Output Signal: I2C, UART (0~3V), analog voltage
• Working Temperature: -20～50℃
• Working Humidity: 15～90%RH (non-condensing)
• Storage Temperature: -20～50℃
• Storage Humidity: 15～90%RH (non-condensing)
• Lifespan: >2 years (in the air)
• Adapter Plate Size: 37*32mm
• Compatibility: Arduino, ESP32, Raspberry pi

• Gravity: Oxygen / O2 Signal Conversion Board x1
• Oxygen / O2 sensor probe x1
• Gravity - 4pin Cable x1