ORP Controllers

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Overview

Duvera, in collaboration with Digital Instruments Corporation, provides reliable and precise ORP (Oxidation-Reduction Potential) controllers designed for real-time monitoring and control of oxidation or disinfection processes. ORP measurement is vital in wastewater treatment, chlorination systems, and industrial process applications where redox balance determines chemical efficiency and water safety. Built on advanced electronics and rugged industrial design, Duvera ORP controllers ensure stable, accurate, and consistent control in all operating conditions.

Key Features

The ION-605-C ORP controller combines measurement accuracy with intelligent control functionality. It features a wide measurement range of –2000 to +2000 mV with 1 mV resolution and ±1 digit accuracy. The unit’s dual red LED display clearly presents the measured ORP value and control setpoint simultaneously. A single-point manual calibration system with adjustable slope correction ensures quick field calibration. The controller includes both analog and relay outputs — a fully isolated 4–20 mA DC signal and a 5 Amp changeover relay — enabling integration with chemical dosing systems, pumps, or PLC-based automation. Compact and rugged, the instrument is housed in a grey ABS cabinet designed for reliable performance in demanding plant environments.

Applications

Duvera ORP controllers are widely used in wastewater treatment plants for oxidation control and chlorination, in swimming pools for disinfectant management, and in chemical industries for redox potential monitoring during reactions. They are also used in drinking water systems and cooling water circuits to maintain effective sterilization and prevent biological fouling.

Specifications

The controller operates across a range of –2000 to +2000 mV with 1 mV resolution and ±1 digit full-scale accuracy. It provides a dual red LED display, showing upper ORP measurement and lower control setpoint. The unit supports single-point manual calibration with ±30% display slope adjustment. Outputs include 4–20 mA DC (fully isolated, optional) and a potential-free 5 Amp relay for control action. Two setpoints allow independent high and low control configurations. Power requirement is 230 V AC ±10%, 50 Hz single phase, with an operating temperature range of 5°C to 50°C. The enclosure measures 96×96×65 mm, built from grey ABS plastic, weighing approximately 400 grams. Designed for panel mounting, it delivers reliable operation in continuous-duty industrial conditions.