Oxidation-Reduction Potential (ORP): Application examples
INSA analyzers and measuring sets are used in a wide range of applications in industry, water management, and in a number of other areas. Below you will find brief information and tips on some typical applications.
pH and ORP measurement in swimming pools
pH meters in these applications automatically maintain the optimal pH value by base or acid dosing. Usually the chlorine concentration is also measured and regulated at the same time. The requirement to monitor the ORP value is also common.
For these applications, the MFD88 analyzer offers a cost-effective multi-channel configuration. A single device then measures chlorine and pH (or chlorine, pH and ORP), even from several measurement points at the same time. It can also directly control the dosage without the use of other control systems.
ORP measurement at biological wastewater treatment plants
Oxidation-reduction potential (ORP) is a quantity indicating whether the measured environment is in the aerobic or anaerobic region. In the case of biological WWTPs, the operation of the denitrification stages can be monitored and optimized by measuring the ORP.
A basic prerequisite for reliable ORP measurement is maintaining a clean surface of the electrode. In many cases, this can only be achieved by mechanical cleaning of the sensor, provided by the SPR41ME nad SPO41ME probes.
ORP measurement in drinking water treatment plants
ORP measurement is mainly used to control the preparation of sand filters with permanganate. For this application it is necessary to use probes with automatic cleaning (SPR41ME, SPO41ME).
ORP measurements can also be used to monitor low concentrations (up to approx. 0.15 mg/l) of chlorine, chlorine dioxide or ozone in clean water.