Coupling signals to flowlines
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United States of America Patent
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N/A
Issued Date -
Feb 12, 2004
app pub date -
Jun 13, 2003
filing date -
Dec 15, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Coupling apparatus for allowing transmission of electrical signals between a flowline (1) and a communications unit (4). The coupling apparatus comprises first (5) and second (8) portions of magnetic material. The first portion is arranged to receive the second portion and at least partially defines a flowline receiving aperture. The first and second portions (5,8) together form a magnetic circuit around the aperture and the second portion carries a winding (9) arranged for electrical connection to the communications unit (4). The winding links with the magnetic circuit when the second portion (8) is received in the first (5) such that an alternating current in the winding will generate a corresponding current in a flowline disposed in the aperture and vice versa. The arrangement allows the first portion to be permanently mounted on a flowline and the second portion to be inserted in situ.
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