New paths are created by walking them.

KROHNE has always been a pioneer.

The pioneering spirit has always been a part of KROHNE. Without this, many of our products and solutions would not exist today: many times, we have pioneered the industrial implementation of technologies that became standards in the process industries.

At KROHNE, pioneering spirit also means courage and foresight when entering new markets: in 1987, we were the second German company to found a joint venture company in China.

Many more steps followed, leading to a global company with more than 4,000 employees in over 100 countries worldwide. Today, KROHNE is not only present on all continents, but also in all industries.



    KROHNE launches the next generation of sensors.

  • 2021

    KROHNE turns 100 years, placing its anniversary under THE SPIRIT OF CREATIVITY that emphasizes the open approach to unconventional ideas and stands for a century under the sign of creativity and innovation.




    KROHNE introduces Bluetooth® Low Energy (BLE) option for Coriolis mass flowmeters, being the first manufacturer to provide SIL certified Coriolis meters allowing Bluetooth® communication for wireless parameterisation and monitoring in safety-related applications.

  • 2019

    KROHNE and SAMSON found a Joint Venture to develop autonomous actuators for the process industry 4.0: the intelligent process node measures the flow and controls its valve function autonomously, based on a highly innovative software and hardware architecture. This provides a prerequisite for swarm intelligence and self-learning systems, and is a major step on the way to the autonomous factory.




    To assure the best performance under all process conditions, KROHNE introduces Total 3D-linearisation of every DP transmitter to compensate all possible influencing factors in combination, providing for a robust and accurate differential pressure measurement, even under changing process conditions.

  • 2013

    KROHNE introduces the first process analytics digital sensor portfolio with integrated transmitter technology and direct connection to control system via 4…20 mA/HART®: with unique circuit technology and special encapsulation, the sensors offer process reliability at a level previously unknown.




    Entrained Gas Measurement EGM for KROHNE Coriolis mass flowmeters is a technology to cope with entrained gas: with EGM, Coriolis meters maintain operation over a wide range of gas fractions and complex flow conditions, e.g. liquids mixed with gas, slurries containing gases, and highly viscous fluids with plugs of gas entrainment.

  • 2011

    KROHNE introduces SmartSense insulation resistance monitoring for safe operation of temperature assemblies: integrated in the temperature transmitter, it can detect cracks in the thermowell e.g. caused by wear or corrosion, and prevents erroneous measurements.




    First electromagnetic flowmeter (EMF) with measuring tube with a rectangular and reduced cross-section that enables a stable measurement even at low flow rates: due to the optimized flow profile, it can be installed virtually anywhere without straight inlet or outlet runs – behind pipe bends, slide valves or a reduction in the pipe. The special cross section is characteristic for one of our most successful products in the water market.

  • 2009

    Introduction of the Drop antenna for radar level transmitters: its ellipsoidal shape minimises scaling and is unaffected by the angle of repose, eliminating the need for expensive antenna aiming kits or purging systems. Accompanied by additional antenna types, the Drop antenna remains in the portfolio to the present day.




    KROHNE introduces the first 2-wire vortex flowmeter with integrated pressure and temperature compensation: it combines flow, temperature and pressure measurement as well as flow calculation in just one device, saving installation costs and resulting in a better overall system accuracy. It was the basis for our current Vortex portfolio.

  • 2000

    Installation of the world’s most precise volumetric calibration rig for flowmeters up to DN 3000/120″ with a certified accuracy of 0.013% in Dordrecht, The Netherlands, which remains our largest production site for electromagnetic and ultrasonic flowmeters, and also for system solutions.




    First straight-tube Coriolis mass flowmeter: KROHNE is the first process instrumentation company to present a direct mass flow measurement using the Coriolis effect with a single straight measuring tube without a flow splitter. Accompanied by additional pipe geometries, the product remains in the portfolio to the present day.

  • 1989

    Presentation of the first FMCW radar level transmitter for process tanks: KROHNE pioneered the industrial implementation of radar in process applications as a non-contact level measurement technology for difficult vessel geometries. From this, a complete portfolio of radar level transmitters has been developed.




    KROHNE is the second German company to found a joint venture company in Shanghai, China. Today, China is the largest single market for KROHNE.

  • 1981

    First electromagnetic flowmeter (EMF) with measuring tube made of oxide ceramics and sintered-in platinum electrodes: chemically resistant, dimensionally stable, abrasion and corrosion resistant, thermally stable – in sum, this device was developed for maximum reliability in all processes. The product remains in the portfolio to the present day.




    As technology pioneer, KROHNE started developing 2-path ultrasonic flowmeters, and 1980 marks the first delivery of an ultrasonic flowmeter to Shell for crude oil measurements. From this, a complete portfolio of ultrasonic flowmeters has been developed.




    KROHNE introduces the first electromagnetic flowmeter (EMF) for industrial process measurement, setting a new standard in volume flow measurement: no moving parts, no constriction, no pressure loss – nothing like this had ever existed before. This was the foundation for the current portfolio.

  • 1949

    The Second World War brought great tragedy as both Ludwig and Karl Krohne lost their lives. This left KROHNE in the hands of Ludwig’s wife Anna Krohne. In 1949, she asked her grandson Kristian Rademacher-Dubbick, who was co-incidentally born also in 1921, to help her in the business.




    KROHNE starts manufacturing variable area flowmeters to measure the flow of air, gases and liquids. Since then, the variable area technology has remained in the portfolio, and has continuously been adapted to new requirements.

  • 1921

    LUDWIG KROHNE & SOHN is founded in Duisburg, Germany. The initial workforce was Ludwig Krohne, his wife Anna and his son Karl.