Gravity: Industrial Analog EC / Electrical Conductivity Meter Kit for Water Quality Monitoring

SKU: SEN0451

DFRobot Gravity Analog Electrical Conductivity Sensor PRO(K=1) measures aqueous solution conductivity for water quality evaluation, used in hydroponics, aquaculture, and environmental water detection. As an upgrade, it has high probe endurance (24/7 monitoring), integrated PT1000 for temperature compensation. Supports 3-5V input, compatible with 3.3V/5V controllers. Hardware-filtered output, AC excitation reduces polarization (improves precision/probe life). Library includes calibration; package has calibration solution, waterproof connector, etc. Industrial-grade, long-term immersion possible. Pair with Arduino + library for quick, solder-free setup.

Angled shot of analog electrical conductivity sensor for water quality monitoring-DFRobot product sku:SEN0451 image.

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    Signal Conversion Board

    Parameter Value
    Supply Voltage 3.3–5.0V
    Output Voltage 0–3V
    Probe Connector BNC
    Signal Connector PH2.0-3Pin
    Measurement Accuracy ±5% F.S.
    Dimension 42mm × 32mm / 1.65" × 1.26"

    Electrical Conductivity Probe

    Parameter Value
    Probe Type Industrial Grade
    Cell Constant K=1
    Temperature Probe PT1000 platinum resistance thermometer
    Maximum Range 1–2200μS/cm
    Recommended Range 100–2000μS/cm
    Operating Temperature 0–50℃, non-freezing
    Operating Pressure 0.5MPa
    Waterproof Level IP68
    Cable Length 5m

    Pinout

    Electrical Conductivity Probe Pro Pinout

    Label Description
    S+ (EC) Probe positive electrode
    S- (EC) Probe negative electrode
    TEMP PT1000 RTD, not polarity sensitive

    Electrical Conductivity Conversion Board Pinout

    Silkscreen Label Description
    - Power GND Power GND
    + Power VCC Support 3.3V-5V power supply
    A Analog output Output range 0V-3V
    S+ Probe positive electrode Connect to probe positive
    S- Probe negative electrode Connect to probe negative

    PT1000 Tmperature Conversion Board Pinout

    Silkscreen Label Description
    - Power GND Power GND
    + Power VCC Support 3.3V-5V power supply
    A Analog output Output range 0V-3V
    T+ RTD positive Connect to PT1000 RTD, not polarity sensitive
    T- RTD negative Connect to PT1000 RTD, not polarity sensitive

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