Gravity: Analog Industrial ORP Sensor Meter Pro for Arduino

The Gravity: Analog Industrial ORP Sensor Meter Pro is an upgraded water quality monitoring kit designed for Arduino microcontrollers. Equipped with a platinum indicator and silver-silver chloride reference electrode, it enables continuous 24-hour online monitoring across a -2000mV to +2000mV range. It is ideally suited for students, hobbyists, and researchers building durable aquatic and environmental telemetry systems.

Upgraded industrial electrode probe

The probe combines a platinum indicator electrode with a silver-silver chloride reference electrode for high durability. This design supports uninterrupted 24-hour online ORP monitoring in water quality setups.

Stable voltage reference converter

The signal converter module integrates an improved voltage reference, ensuring that supply voltage fluctuations do not alter sensor readings. It operates on a 5V input and provides an analog output across 0.5V to 4.5V via a standard Gravity PH2.0 3-pin interface.

Accurate oxidation-reduction tracking

Oxidation-Reduction Potential measures the oxidizing or reducing strength of an aqueous solution in millivolts. The probe delivers reliable readings from -2000mV to +2000mV with an electrode stability of ±8mV per 24 hours across operating temperatures of 5°C to 70°C.

Mounting and waterproof hardware

The package includes a waterproof aviation cable connector, waterproof cable gland, nylon screws, and nylon columns. These accessories allow for secure mounting and robust enclosure integration in demanding environments.

Compact converter module specifications

Measuring 42mm by 32mm, the signal converter features a 5.08mm pluggable terminal connector for simple probe wiring. The probe exhibits an internal resistance of 10KΩ or less with an electrode potential between 245mV and 270mV.

Downloads & documentation

• Product wiki (DFRobot)