As a substitute for chlorine, hydrogen peroxide is used for disinfection purposes in many different branches. The prerequisite is that the oxidation and reduction agent is added to  the respective processes at the right time and in the correct quantity. This requirement can be realised application-optimised with corresponding measurement and control instruments as well as metering systems from ProMinent. The DULCOTEST® hydrogen peroxide sensors PER1 and PEROX from ProMinent are at the heart of the control circuits. The amperometric sensors enable reproducible and exact measurement of the H2O2 concentration. While the PER1 sensors covers the measuring ranges 0-50 mg/l, 0-200 mg/l or 0-2000 mg/l and is resistant to chemicals and dirt particles, the PEROX sensor can be used in the ranges 0-20 mg/l, 0-200 mg/l or 0-2000 mg/l and is particularly impressive with its short response time even in temporary absence of the hydrogen peroxide to be determined. With the PEROX sensor, the measuring ranges can be selected manually at the measuring transducer.
With the measuring range of 0-50 ppm H2O2, the Heidelberg-based manufacturer has enhanced the PER1 sensor range for measuring hydrogen peroxide. The reference electrode and the NTC temperature sensor are integrated in the stem of the sensor. The 4-20 mA standard signals of the measuring transducer, which is also integrated, ensure secure and reliable data transmission between the controller and sensor even in environments subject to high electromagnetic influence. The 2-wire technology used for power supply and signal transmission permits easy handling for installation and servicing. The sensor stem is made from PVC-C.
In addition to hydrogen peroxide, the following 12 variables can be measured with DULCOTEST® sensors:
- pH
- Redox (ORP)
- Chlorine
- Conductivity (inductive and conductive)
- Chlorine dioxide
- Chlorite
- Bromine
- Ozone
- Peracetic acid
- Fluoride
- Dissolved oxygen
- Temperature
With the constantly updated measured values, processes can be optimised by functions such as feedforward control, additive basic load metering and limit monitoring with controlled variable deactivation corresponding to the entered parameters. |