Measuring the oxidizing or reducing power of a solution to control chemical and biological processes.
An ORP sensor measures the oxidation–reduction potential of a liquid, expressed in millivolts (mV). ORP indicates a solution’s tendency to either gain electrons (reduction) or lose electrons (oxidation). It is a critical parameter for disinfection, biological treatment, and chemical reaction control.
ORP sensors operate by measuring the electrical potential difference between an inert measuring electrode (commonly platinum or gold) and a reference electrode immersed in a solution. The resulting voltage reflects the solution’s redox condition.
The measured value directly represents the oxidizing or reducing strength of a solution.
ORP trends indirectly indicate disinfection effectiveness, biological activity health, anaerobic or aerobic conditions, and the need for chemical dosing adjustments.
With Industrial IoT integration, ORP sensors enable real-time monitoring of redox conditions, automated control of disinfection and aeration, early warning of process upsets, and compliance-ready data logging.
The ORP Sensor provides insight beyond numbers. By revealing the chemical direction of a process, it guides disinfection, biological treatment, and oxidation control with clarity and confidence.