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Gravity: Electrochemical Smart Gas Sensor

SKU: DFR0784

The Gravity Electrochemical Smart Gas Sensor is an advanced, Arduino-compatible device designed to accurately detect hazardous gases such as CO, O2, NH3, and H2S in industrial environments, supporting a wide voltage range and multiple output methods for versatile applications. Its key features include fast and accurate measurement, high sensitivity, anti-interference capability, and pre-calibrated electrochemical probes, ensuring reliable performance. The sensor integrates easily with platforms like Arduino, ESP32, and Raspberry Pi, making it ideal for enhancing safety in critical settings by monitoring gas levels effectively.

Downloadable Resources

  • Docs
  • Tech Specs

    • Specification

    • Detection Gas: CO, O2, NH3, H2S, NO2, HCL, H2, PH3, SO2, O3, CL2, HF
    • Working Voltage: 3.3～5.5V DC
    • Working Current: <5mA
    • Output Signal: I2C, UART output (0~3V), analog voltage (see the characteristic parameters of specific probe)
    • 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: 32×32mm

    Characteristic Parameters

    SKU SEN0465 SEN0466 SEN0467 SEN0468 SEN0469 SEN0470
    Gas type O2 CO H2S Cl2 NH3 SO2
    Detection range (0-25)%Vol (0-1000)ppm (0-100)ppm (0-10)ppm (0-100)ppm (0-20)ppm
    Resolution 0.1%Vol 1ppm 1ppm 0.1ppm 1ppm 0.1ppm
    V0 voltage output range (1.5-0)V (0.6-3)V (0.6-3)V (2-0)V (0.6-3)V (0.6-3)V
    Response time (T90) ≤15S ≤30S ≤30S ≤60S ≤150S ≤30S
    SKU SEN0471 SEN0472 SEN0473 SEN0474 SEN0475 SEN0476
    :---------------------- :----------: :----------: :----------: :----------: :----------: :----------:
    Gas type NO2 O3 H2 HCL HF PH3
    Detection range (0-20)ppm (0-20)ppm (0-1000)ppm (0-10)ppm (0-10)ppm (0-1000)ppm
    Resolution 0.1ppm 0.1ppm 1ppm 0.1ppm 0.1ppm 0.1ppm
    V0 voltage output range (2-0)V (2-0)V (0.6-3)V (2-0)V (2-0)V (0.6-3)V
    Response time (T90) ≤30S ≤120S ≤120S ≤60S ≤60S ≤30S

    Pinout

    DFR0784 Smart Gas Sensor Terminal

    Label Name Function description
    1 D/T I2C data line SDA/UART data transmitting-TX
    2 C/R I2C clock line SCL/UART data receiving-RX
    3 - GND -
    4 + Power supply + (3.3-5V compatible)
    Label Name Function description
    1 VCC Positive power supply (3.3-5V compatible)
    2 GND GND negative power supply
    3 V0 The raw voltage output of the gas probe. You can develop your own conversion algorithm based on the original output.
    4 ALA Threshold alarm function, the threshold can be set through API, when exceeding this value, the pin will output high level.
    5 NA Custom pin. Different PWM outputs can be configured through I2C. Or customize other functions.

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