This is a sensor that detects phosphine 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 phosphine in the environment. Can be widely used in the detection of phosphine in the fields of industry, mining, and environmental protection.

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 a phosphine 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.

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

• Industrial phosphine detection
• Mining phosphine detection
• Environmental protection device

• Detection Gas: Phosphine (PH3)
• Detection range: 0~1000ppm
• 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

• Product wiki

• Gravity: PH3 Signal Conversion Board x1
• PH3 sensor probe x1
• Gravity - 4pin Cable x1