Seeed Studio Studio Grove ORP Sensor Kit Pro (HR-O) - IP68 Waterproof

The sensor module supports a dual supply voltage of 3.3V and 5V DC, making it compatible with a wide range of microcontrollers like Arduino Uno (5V), Raspberry Pi (3.3V), ESP32, and STM32 boards. Ensure your base shield or controller provides the correct logic level.

Connect the sensor's Grove cable to an analog port (e.g., A0) on a Grove Base Shield attached to your Arduino. Use the provided Seeed Studio Studio library to read the analog voltage, which is then converted to an ORP value in millivolts. The wiring is simplified with the 4-pin Grove connector, eliminating complex soldering.

The IP68 rating indicates the probe is dust-tight and can be continuously submerged in water under specified conditions, typically beyond 1 meter depth. This makes it suitable for permanent installation in tanks, open water bodies, and submerged process vessels without risk of water ingress damaging the sensing element.

Yes, the probe features a standard BNC connector, allowing it to be disconnected from the Grove interface board. This enables probe replacement for maintenance or connection to other compatible BNC-based meters or data acquisition systems, offering flexibility in system design.

The sensor requires periodic calibration using standard ORP calibration solutions (e.g., 225mV and 465mV) to maintain accuracy. The probe's reference electrolyte may form harmless white potassium chloride crystals at the junction; these can be gently wiped clean with a damp cloth. Store the probe in a storage solution or moist environment when not in use.