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From the analysis to the solution.

KROHNE – Intelligent solutions for water and wastewater industry.



KROHNE is your professional partner for solutions pertaining to all questions regarding instrumentation in the areas of water purification and sewage treatment. Whether for community sewage treatment plants and water works or for the process industry in the areas of wastewater treatment, cooling water treatment, and steam processes, KROHNE has been supporting its customers in improving water systems efficiency with optimally designed measurement technology for over 80 years.

With the broad range of analytical measurement technology from our OPTISENS series, KROHNE Water Solutions supplements the measurement of the physical parameters of flow, level, and temperature. Our main goals are attaining sturdiness, reliability, and quality in the various application areas. In order to meet your application needs, we deploy state-of-the-art technologies which enable us to offer highly-efficient measurement technology designed for everyday usage.

An additional bonus: We don’t just deliver the measurement techno-logy, but we‘re also able to configure entire systems for customer-specific requirements – worldwide.

Technology highlights of the OPTISENS series.


ASR – automatic sensor cleaning.
The formation of deposits on analytical sensors has a considerable impact on their lifespan and measurement accuracy. The new ASR process creates outgassing on the electrode surfaces of the OPTISENS 1000 chlorine sensor. This removes even tough coatings and considerably lengthens maintenance intervals.


Integrated spray cleaning on OPTISENS 2000 sensors.
In many wastewater applications, such as primary treatment and final sedimentation or during biological treatment, measuring devices are often subject to heavy biological growth or ragging. All sensors of our OPTISENS 2000 series feature integrated spray cleaning using air or water, to ensure optimum measurement accuracy over long periods. The large sensor diamete – without any deadlegs – prevents ragging.


Ammonium and nitrate measurement with ISE – ion-selective electrodes technology.
The OPTISENS PAM 2080 measuring system allows direct, continuous measurement of ammonium and nitrate concentrations, e.g. in aeration basins of municipal sewage treatment facilities. The use of directly immersed electrodes eliminates the need for sample preparation of reagent addition. Compensation of interfering ions, self monitoring, automatic cleaning and simple installation and operation make the OPTISENS PAM 2080 the most reliable solution for this measurement task. Technology highlights of the OPTISENS series.


Easy recalibration of the OPTISENS OAM 1050 turbidity measuring system.
The OPTISENS OAM 1050 utilizes reusable standard cuvettes for calibration. The sealed cells contain turbidity standards with the values 0,02, 10 and 100 FNU and are simply inserted into the measurement chamber instead of the measuring cuvette. This means that calibration takes just a few minutes. There is no longer a need for liquid calibration standards, which are difficult to handle and susceptible to errors.




Customer-specific solutions.
We will gladly assist you in the search for the optimum solution to your measurement task. Should it be required to specifically design a measuring system according to your requirements, we are able to modify our systems according to your needs and include additional components such as sample devices, mounting plates or enclosures.

In addition, we can offer measuring systems for the following special parameters:
Hydrogen peroxide and ozone in disinfection applications,
Fluoride and sodium in drinking water applications,
Chloride, ammonium, nitrate, calcium, copper and lime in water applications.

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