DFRobot Gravity Analog EC Sensor – K10 Probe

The DFRobot Gravity Analog Electrical Conductivity Sensor – K10 is designed for measuring high electrical conductivity liquids such as seawater and concentrated brine. It supports a 3.0–5.0V supply and provides a 0–3.2V analog output compatible with Arduino and Raspberry Pi platforms. The AC excitation method reduces electrode polarization, improving measurement stability and extending probe lifespan. Featuring a laboratory-grade K=10 probe and single-point calibration library with automatic buffer recognition, it offers reliable performance for marine aquaculture, aquariums, and high-salinity water quality monitoring applications.

Tips:

This product does not contain a temperature sensor. In order to ensure the measurement accuracy, it is strongly recommended to add a temperature sensor to measure the temperature and achieve automatic temperature compensation. DS18B20 waterproof temperature sensor can be used.

Features

- Laboratory-grade K=10 conductivity probe

- 10–100 mS/cm high conductivity measurement range

- AC excitation signal for reduced polarization

- 3.0–5.0V wide operating voltage

- 0–3.2V analog voltage output

- ±5% full-scale measurement accuracy

- Single-point calibration with auto buffer recognition

- Integrated temperature compensation algorithm support

- BNC probe connector for secure connection

- Gravity PH2.0-3Pin interface for plug-and-play use

- Compatible with Arduino and Raspberry Pi

- Uniform Gravity mechanical form factor

Specifications

- Supply Voltage: 3.0–5.0V DC

- Output Voltage: 0–3.2V

- Measurement Range: 10–100mS/cm

- Measurement Accuracy: ±5% F.S.

- Cell Constant: 10±2

- Excitation Method: AC Signal

- Probe Type: Laboratory Grade

- Probe Connector: BNC

- Signal Connector: PH2.0-3Pin

- Operating Temperature: 0–40°C

- Board Size: 42mm × 32mm

- Cable Length: 100±2cm

- Probe Life: >0.5 year

Links

- PCB Layout

- Probe Dimension

- DFRobot_EC10 Library(Github)

- Gravity: Analog Electrical Conductivity Sensor / Meter V2 (K=1)

Tutorials

- DFRobot Gravity Analog Electrical Conductivity Sensor with Arduino