PULSED LEVEL GAUGE SYSTEM WITH CONTROLLABLE DELAY PATH THROUGH SELECTED NUMBER OF DELAY CELLS
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United States of America Patent
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Issued Date -
Mar 7, 2013
app pub date -
Sep 6, 2011
filing date -
Sep 6, 2011
priority date (Note) -
Abandoned
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Abstract
A level gauge system comprising transmission signal generating circuitry for generating a transmission signal; a propagation device connected to the transmission signal generating circuitry and arranged to propagate the transmission signal towards a surface of the product inside the tank, and to return a reflected signal resulting from reflection of the transmission signal at the surface of the product contained in the tank. The level gauge system further comprises reference signal providing circuitry configured to provide a reference signal. At least one of the transmission signal generating circuitry and the reference signal providing circuitry comprises delay circuitry. The delay circuitry comprises a plurality of delay cells, and controllable switching circuitry arranged and configured to allow formation of a delay path comprising a subset of the plurality of delay cells connected in series, to thereby allow control of a signal propagation delay of the delay circuitry.
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