Device for providing a gas composition and temperature compensated acoustic measurement of a liquid level
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United States of America Patent
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Apr 28, 2020
Grant Date -
Jul 19, 2018
app pub date -
Jul 6, 2016
filing date -
Jul 9, 2015
priority date (Note) -
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Abstract
A device for providing a gas and temperature compensated acoustic measurement of the level of a liquid surface, including a transmitter, a receiver, and a waveguide for guiding acoustic signals. The waveguide includes a reference portion extending from a first end to a reference element, and a measurement portion extending from the reference element towards the end. The device further includes a channel extending from at least one inlet in said reference portion to at least one outlet in said measurement portion, the channel being separated from the waveguide so as to provide a fluid flow independent of the waveguide, and a gas-pump arranged to create a gas flow in said channel from said at least one inlet to said at least one outlet.
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