Gravity: Lab Grade Analog pH Sensor Kit for Arduino

The Gravity: Lab Grade Analog pH Sensor Kit is a 5V liquid analysis module designed to read acidity and alkalinity levels from 0 to 14 pH. It is tailored for students, makers, and educators conducting laboratory experiments or monitoring water quality for indoor plants with Arduino.

Full-range laboratory liquid testing

The sensor measures fluid acidity across the entire 0 to 14 pH range with an accuracy of ± 0.1 pH at 25 ℃. It functions reliably within operating fluid temperatures between 0 and 60 ℃ and delivers readings within a response time of one minute or less.

BNC probe and interface board

The kit includes a dedicated pH probe that attaches to the driver circuit board via an industry-standard BNC connector. The 43 x 32 mm board conditions the raw probe signal for straightforward processing by microcontroller analogue inputs.

Gain adjustment and visual indicators

An onboard gain adjustment potentiometer allows users to fine-tune the analogue output during calibration. The circuit board also includes a dedicated power indicator LED to confirm operational status at a glance.

Standard 5V micro-controller connection

Designed for 5.00V systems, the driver board connects using a 3-pin pH2.0 patch interface. The included analogue cable links directly to compatible microcontroller boards without complex wiring.

Complete hardware package contents

Each kit supplies one pH probe with a BNC connector, one pH sensor circuit board, and one analogue connection cable. All core components are provided to begin measuring liquid pH immediately.

Downloads & documentation

• Product wiki (DFRobot)