Advances In Radar Level Gauge Technology

In the last 10 years there hasn't been such rapidwhen used in abrasive media and electromechanical
development with any measuring principle as thereplumb line systems are subject to constant wear and
has with radar, pioneers of this radar technologyfrequent servicing.
recognised very early on the advantages andIn 2004 a reliable, continuous measuring system had
application possibilities of radar technology for levelbeen developed and introduced especially for bulk
measurement in the process industry.solids to solve the problem of unsatisfactory solutions
In 1997, new standards in level measurementfor the bulk solids market. This radar level gauge has
technology were set when the first two-wire radara measuring range up to 70 m, can handle
sensor was developed and advanced within a verytemperature ranges up to 200 oC, and represented
short time to international technology. It quicklyan immense advancement in level measurement of
became the market leader.bulk solids and has since established itself solidly in the
The pioneers of this technology have systematicallymarket.
developed the radar level gauge and revolutionisedIn 2007, these very same pioneers of radar level
the radar market with the first intrinsically safe,gauge technology came up with the low cost radar
two-wire instruments. These radar level sensors havesensor solution. This new radar device finds
proven their virtually unlimited application potential, asapplication in areas where, for reasons of economy,
their high process reliability and compact size madeultrasonic instruments were used until now. This
them versatile level measurement instruments for allsensor is the ideal solution for application in
industries.medium-sized silos up to 15 m high and thus covers
Today the issue of process optimization has athe majority of standard applications in bulk solids.
decisive influence on the selection of a sensor. TheWith these two radar solutions (designed to cover
implemented process technology has a substantialboth short and long ranges), whatever the bulk solid,
effect on the efficiency of a pant, its consumptionthe readings provide for an efficient and transparent
of raw materials, and not least the cost.process.
Until a few years ago only unsatisfactory solutionsIn the last 10 years, level measurement with
could be found for this continuous measurement oftwo-wire radar became accepted as a dependable
bulk solids. Ultrasonic sensors are seriously affectedstandard technology. Their versatility and high
by strong dust generation, intense noise air currentsreliability in liquids and bulk solids have made radar
during pneumatic filling. Sensors that have physicalsensors the ideal solution for all industries and process
contact with the medium quickly reach their limitsconditions.