G - Physics – 01 – S
Patent
G - Physics
01
S
343/38
G01S 13/08 (2006.01) G01F 23/284 (2006.01) G01F 23/296 (2006.01) G01S 7/40 (2006.01) G01S 13/86 (2006.01) G01S 13/88 (2006.01)
Patent
CA 2031453
A device for gauging the level of a fluid in a container, above the surface of the fluid there being a gas, is described. The device comprises a transmitter for transmitting a microwave signal through the gas to said surface and a receiver for receiving the microwave signal reflected against the surface, and an electronic unit arranged to calculate from the propagation time of the microwave signal a first distance from the transmit- ter to the surface of the fluid and thereby the level in the container. Particularly characteristic of the device is a first means for feeding the sound velocity in the gas and a second means for correcting the first dis- tance to a second distance with consideration to the microwave velocity in the gas through a known relation between the sound velocity and the microwave velocity.
Marks & Clerk
Saab Marine Electronics Aktiebolag
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