DE3474072D1 - Apparatus and method employing extraneous field compensation for locating current-carrying objects - Google Patents

Apparatus and method employing extraneous field compensation for locating current-carrying objects

Info

Publication number
DE3474072D1
DE3474072D1 DE8484850115T DE3474072T DE3474072D1 DE 3474072 D1 DE3474072 D1 DE 3474072D1 DE 8484850115 T DE8484850115 T DE 8484850115T DE 3474072 T DE3474072 T DE 3474072T DE 3474072 D1 DE3474072 D1 DE 3474072D1
Authority
DE
Germany
Prior art keywords
method employing
field compensation
carrying objects
locating current
extraneous field
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE8484850115T
Other languages
English (en)
Inventor
John Rippingale
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schonstedt Instrument Co LLC
Original Assignee
Schonstedt Instrument Co LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schonstedt Instrument Co LLC filed Critical Schonstedt Instrument Co LLC
Application granted granted Critical
Publication of DE3474072D1 publication Critical patent/DE3474072D1/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/081—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices the magnetic field is produced by the objects or geological structures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/025—Compensating stray fields

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Geophysics And Detection Of Objects (AREA)
DE8484850115T 1983-04-11 1984-04-10 Apparatus and method employing extraneous field compensation for locating current-carrying objects Expired DE3474072D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/483,613 US4639674A (en) 1983-04-11 1983-04-11 Apparatus and method employing extraneous field compensation for locating current-carrying objects

Publications (1)

Publication Number Publication Date
DE3474072D1 true DE3474072D1 (en) 1988-10-20

Family

ID=23920792

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484850115T Expired DE3474072D1 (en) 1983-04-11 1984-04-10 Apparatus and method employing extraneous field compensation for locating current-carrying objects

Country Status (3)

Country Link
US (1) US4639674A (de)
EP (1) EP0122899B1 (de)
DE (1) DE3474072D1 (de)

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NL2007986C2 (nl) * 2011-12-16 2013-07-15 Roos & Bijl B V Werkwijze en systeem voor het bepalen van een in ten minste ã©ã©n ondergrondse buisleiding geã¯nduceerde stroomsterkte, werkwijze voor het reduceren van de gevolgen van de geã¯nduceerde stroom, computerprogramma en informatiedrager.
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Also Published As

Publication number Publication date
EP0122899A3 (en) 1985-04-17
US4639674A (en) 1987-01-27
EP0122899A2 (de) 1984-10-24
EP0122899B1 (de) 1988-09-14

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee