Level transmitter
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United States of America Patent
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-
Jun 11, 2002
Grant Date -
Jan 24, 2002
app pub date -
Sep 24, 2001
filing date -
Aug 5, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A level transmitter for use in a process application measures the height of a product level in a container, e.g., in a tank. The level transmitter includes an electromagnetic wave antenna directed into the tank. An electromagnetic wave source sends an electromagnetic wave signal through the electromagnetic wave antenna. An electromagnetic wave receiver receives the reflected electromagnetic wave signal. Measurement circuitry coupled to the source and receiver initiates transmitting of the electromagnetic wave signal and determines product level height based upon the received, reflected signal. Output circuitry transmits information related to product height. The device is suitable for use with containers having very small orifices for antenna insertion.
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