Gravity: Lab Grade Analog EC / Electrical Conductivity Sensor Kit for Water Quality Monitoring (K=1)

This Gravity analog electrical conductivity sensor kit brings EC measurement to Arduino water testing projects, with a K=1 laboratory-grade probe, a V2 signal conversion board, and calibration solutions included. Recommended for 1–15mS/cm measurements, this EC sensor kit helps compare aqueous samples and track conductivity changes in hydroponic, aquaponic, aquaculture, and environmental water experiments. Gravity and BNC connectors simplify assembly, while the Arduino library provides two-point calibration and conductivity conversion. This laboratory-grade kit is designed for intermittent sampling, making this EC sensor a practical choice for hands-on experiments and DIY water testing instruments.

Calibration Solutions Included for a Complete Two-Point Setup

This EC sensor kit includes two bottles each of 1413µS/cm and 12.88mS/cm standard solution, providing both references required by the Arduino library's two-point calibration method. The library automatically recognizes these two standards during calibration, simplifying the setup process before testing samples. Together with the documented Arduino example, the supplied solutions provide a clear route from initial assembly to calibrated conductivity measurements without sourcing the calibration references separately.

Stable Analog Output with AC Excitation

This analog EC sensor combines hardware output filtering with AC excitation to support stable conductivity readings. Hardware filtering reduces signal jitter, while AC excitation reduces electrode polarization and helps prolong probe life. These V2 improvements support sample comparisons and repeated laboratory measurements, where fluctuating output can make results harder to interpret. The result is a practical sensing foundation for custom EC displays and water testing projects.

Gravity and BNC Connections for Easy Arduino Integration

This EC sensor kit uses a BNC connector for the probe and a Gravity analog cable for the controller connection, allowing assembly without soldering. The V2 board accepts a 3.0–5.0V supply, and Arduino wiring instructions and library examples guide initial setup. A 42mm*32mm board and standardized Gravity interface also simplify mechanical planning when combining this EC sensor with other water quality sensors in a DIY multi-parameter instrument.