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80 years - KROHNE for the water and wastewater industry
1921
LUDWIG KROHNE & SOHN founded. Production of variable-area flowmeters for measurement of air, gases and liquids
1952
First electromagnetic flowmeter for water, wastewater, sludge, etc.
1955
Start of production of mechanical level devices for measurement of liquids in tanks
1972
Pulsed DC field excitation with automatic zero correction for electromagnetic flowmeters for the water and wastewater industry
1978
Development of ultrasonic flowmeters for water, district heating, etc.
1979
First non-analog frequency based electronics for EMFs for improved flow measurement of wastewater and sludge.
1981
World?s first ceramic measuring tube for electromagnetic flowmeters to measure iron (III) chloride, et.
1983
First microprocessor-based electronics for cost-optimized production of MIDs for the water and wastewater industries
1986
First electrode-free EMF with capacitive sensor for non-contact measurement of greasy sludges
1990
First microwave radar (FMCW) level gauge for process tanks and digestion tanks
1994
First straight-tube Coriolis mass flowmeter for measurement of mass flow and density of polymers, methanol, activated charcoal, sludge, etc.
1996
First electromagnetic flowmeter for partially filled pipes with integrated capacitive level measurement
2000
Construction of a third calibration rig, the largest and most accurate in the world, at KROHNE Altometer, 43 meters high certified calibration tower, calibration volume uncertainty < 0.013%
2003
First 3-beam ultrasonic flowmeter for water and wastewater, etc.
2004
First electromagnetic flowmeter with auto-diagnosis / monitoring of installation, process and product (VDI / VDE / NAMUR 2650 standard) and fulfils all requirements for custody transfer (OIML R49)
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Further InformationFor detailed information about KROHNE, ckick here. |
