Redox Measurement
The Redox potential measures oxidants or reducing agents in a medium. The measurement of this parameter is relatively cost-efficient, however, it has also some disadvantages: These include non-selective determination of a defined oxidant or reducing agent, strong pH dependence, and the measured signal has a saturation curve with increasing concentration.
The Redox potential is a parameter that does not determine a specific oxidant or reducing agent, but will measure all agents within the sample line. The measured signal is strongly pH dependant and has a saturation curve with increasing concentration. The Redox measurement can be used as a cost-efficient alternative to direct determination of oxidants and reducing agents (e.g. via amperometric probes) or as a secondary measurement. For this purpose, the following conditions must be observed:
- The sample line being analyzed is potential and there are no other redox active connections
- The pH value of the process fluid remains constant
- The expected concentration is located in the steep section of the saturation curve
Application Areas
- Cyanid detoxication at high pH value by oxidation
- Chromate detoxication at low pH value by reduction
- Monitoring of disinfection effect when metering oxidants
- etc.
Our Program offers the following Advantages:
- 11 types of electrodes, in different versions (electric connection, installation length, cable length)
- Fittings for simple installation into bypasses, containers, pipings, an adapter fitting allows replacement without interrupting the process
- Measuring transmitter with display/control to send a signal to a programmable logic controller (PLC) and without display/control
- Control devices with staged capacities
- Integration of the control circuits into Bus systems (PROFIBUS®-DP, CANopen-Bus)
- Easy calibration with buffer solutions
- Standardized measuring and metering systems with plug&play modules
