DFRobot - Gravity: PH3 Phosphine Gas Sensor (Calibrated, I2C & UART, 0-1000ppm)

Gravity: PH3 Sensor (Calibrated) – I2C & UART provides reliable measurement of phosphine (PH3) concentration for safety monitoring and environmental analysis. This electrochemical phosphine detection module arrives factory‑calibrated, enabling rapid deployment for industrial gas monitoring without complex setup. Multiple communication options—analog voltage, I2C, and UART—allow seamless integration into embedded systems and environmental monitoring platforms. Designed for compatibility with popular controllers such as Arduino, ESP32, and Raspberry Pi, this Gravity-series gas sensing board simplifies the creation of compact phosphine concentration detectors across industrial, research, and monitoring applications.

Electrochemical Detection with High Sensitivity

An electrochemical sensing probe enables accurate detection of phosphine concentrations across demanding environments. This gas monitoring module features strong anti‑interference capability and stable signal output, ensuring reliable readings even in electrically noisy industrial environments. High sensitivity allows detection across a broad concentration range, supporting early warning and continuous monitoring applications. Long operational lifespan—exceeding two years under normal atmospheric conditions—reduces maintenance frequency and improves long‑term deployment reliability for industrial safety systems and environmental monitoring installations.

Multiple Output Interfaces for Flexible Integration

This phosphine detection sensor supports analog voltage output alongside digital I2C and UART communication, enabling flexible integration into a wide variety of embedded platforms. Up to 32 configurable I2C addresses allow multiple gas sensing modules to operate on a single bus for multi‑gas monitoring systems. An integrated temperature compensation algorithm improves measurement stability under varying environmental conditions, while a programmable threshold alarm function supports automated safety responses and real‑time hazard detection in monitoring systems.

Part of a Modular Multi‑Gas Detection Series

This Gravity‑series gas sensing platform belongs to a family of 12 calibrated electrochemical gas detectors with identical communication methods and data formats. Available variants include CO, O2, NH3, H2S, NO2, HCL, H2, PH3, SO2, O3, CL2, and HF. Shared interfaces and protocols enable flexible multi‑gas monitoring systems by combining different sensors according to application requirements.

Figure: Gravity: PH3 Sensor (Calibrated) - I2C & UART

This industrial phosphine sensing module supports gas monitoring systems used in mining safety, industrial process control, and environmental protection equipment. Reliable detection capability combined with the plug‑and‑play Gravity interface allows engineers and system integrators to quickly develop phosphine concentration monitoring devices for hazardous gas environments.

• 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

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