Radar level gauge system with leakage detection

Details Radar level gauge system with leakage detection Radar level gauge system with leakage detection

2009-03-10

2010-12-21

Tarcza, Thomas H. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Determining distance

Material level within container

C073S29000R

Reexamination Certificate

active

07855676

ABSTRACT:
A radar level gauge system comprising a transceiver for generating, transmitting and receiving electromagnetic signals; an antenna arranged to direct transmitted electromagnetic signals towards a surface of the product contained in the tank, and to return reflected electromagnetic signals resulting from reflections at impedance transitions encountered by the transmitted electromagnetic signals back to the transceiver; and a hollow waveguide connecting the transceiver and the antenna for guiding the electromagnetic signals therebetween. The radar level gauge system further comprises a leak indication member being movably arranged inside the hollow waveguide in such a way that a force resulting from leakage of the fluid at the sealing member causes a movement of the leak indication member which causes a change in at least one microwave propagation characteristic of the hollow waveguide.

REFERENCES:
patent: 5872494 (1999-02-01), Palan et al.
patent: 2002/0053238 (2002-05-01), Fahrenbach et al.
patent: 2004/0173020 (2004-09-01), Edvardsson
patent: 2005/0017896 (2005-01-01), Klofer et al.
patent: 2005/0223781 (2005-10-01), Renk et al.
patent: 2006/0225499 (2006-10-01), Gravel et al.
patent: WO 2004/076982 (2004-09-01), None
The International Search Report from PCT/SE2010/050264, dated May 27, 2010.
The Written Opinion from PCT/SE2010/050264, dated May 27, 2010.

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