FR2257856B1 - - Google Patents

Info

Publication number
FR2257856B1
FR2257856B1 FR7426135A FR7426135A FR2257856B1 FR 2257856 B1 FR2257856 B1 FR 2257856B1 FR 7426135 A FR7426135 A FR 7426135A FR 7426135 A FR7426135 A FR 7426135A FR 2257856 B1 FR2257856 B1 FR 2257856B1
Authority
FR
France
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
FR7426135A
Other languages
French (fr)
Other versions
FR2257856A1 (de
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.)
KM Kabelmetal AG
Original Assignee
KM Kabelmetal AG
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 KM Kabelmetal AG filed Critical KM Kabelmetal AG
Publication of FR2257856A1 publication Critical patent/FR2257856A1/fr
Application granted granted Critical
Publication of FR2257856B1 publication Critical patent/FR2257856B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Pipeline Systems (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
FR7426135A 1973-07-26 1974-07-26 Expired FR2257856B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732337983 DE2337983C2 (de) 1973-07-26 1973-07-26 Ortungs- und Überwachungsschaltung

Publications (2)

Publication Number Publication Date
FR2257856A1 FR2257856A1 (de) 1975-08-08
FR2257856B1 true FR2257856B1 (de) 1979-08-03

Family

ID=5888050

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7426135A Expired FR2257856B1 (de) 1973-07-26 1974-07-26

Country Status (7)

Country Link
JP (1) JPS5072683A (de)
AT (1) AT351842B (de)
CH (1) CH572187A5 (de)
DE (1) DE2337983C2 (de)
FR (1) FR2257856B1 (de)
GB (1) GB1481850A (de)
SE (1) SE397585B (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5382909A (en) 1983-06-30 1995-01-17 Raychem Corporation Method for detecting and obtaining information about changes in variables
US5015958A (en) 1983-06-30 1991-05-14 Raychem Corporation Elongate sensors comprising conductive polymers, and methods and apparatus using such sensors
ATE77155T1 (de) 1983-06-30 1992-06-15 Raychem Corp Methode zur erkennung und beschaffung von information ueber die veraenderungen von variablen.
SE456376B (sv) * 1983-12-08 1988-09-26 Helmersson Rune Larmanordning vid isolerat rorsystem
JPS613300A (ja) * 1984-04-11 1986-01-09 レイケム・コ−ポレイシヨン 可変状態の変化に関する情報の検出・獲得用装置
JPS60263872A (ja) * 1984-06-07 1985-12-27 レイケム・コ−ポレイシヨン 出来事に関する情報の検知・位置検出用装置および方法
DE3687819T2 (de) 1985-06-12 1993-06-09 Raychem Corp Kohlenwasserstoffsensor.
SE447682B (sv) * 1985-07-26 1986-12-01 Safe Bridge Ab Larmsystem med minst en signalledning for indikering av skada pa och/eller forsok till manipulation av ledningen
AT388430B (de) * 1987-05-06 1989-06-26 Scheuermann Herbert Dipl Ing Vorrichtung zur feststellung und ortung von leckstellen in einer ein feuchtes medium fuehrenden rohrleitung
DE3721205A1 (de) * 1987-06-26 1989-01-05 Pfaudler Werke Ag Verfahren zur feststellung eines schadens einer korrosionsschutzschicht und messeinrichtung zur durchfuehrung dieses verfahrens
DE3822123C1 (de) * 1988-06-30 1990-03-15 Bernd 2325 Grebin De Brandes
US4926129A (en) * 1988-10-12 1990-05-15 Raychem Corporation Sensor assembly for detecting multiple events and distinguishing between them
EP0417061B1 (de) * 1989-09-05 1994-03-02 Brandes, Bernd Verfahren und Vorrichtung zur Ortung des wahren Ortes einer Leckstelle in einer ein feuchtes Medium führenden Rohrleitung
DE19604821C1 (de) * 1996-02-10 1997-10-02 Michael Hesky Gmbh Vorrichtung zur Leckerfassung bei Rohrleitungen
DE102011113039A1 (de) * 2011-09-09 2013-03-14 Kurt Bruse Vorrichtung zum Erkennen von Leckagen an Leitungen von Undichtheiten in Wassersperren einer im Boden befindlichen Gebäudewand, sowie Schaltung zum Betreiben der Vorrichtung
CN106123109B (zh) * 2016-08-05 2022-02-15 倪晨钧 一种管道监测***

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE579184C (de) * 1931-04-08 1933-06-22 Berthold Jenewein Dr Ing Feuchtigkeitsanzeigevorrichtung fuer Isolierungen
DE637703C (de) * 1934-03-07 1936-11-02 Ludwig Maurer Dipl Ing Einrichtung zur elektrischen Fernanzeige der metrischen Entfernung undichter Stellen in Rohrleitungen
DE1814857A1 (de) * 1968-09-05 1970-04-30 Siemens Ag Anordnung zur Signalisierung von Leckstellen in einer Rohrleitung zum Fluessigkeitstransport

Also Published As

Publication number Publication date
JPS5072683A (de) 1975-06-16
DE2337983A1 (de) 1975-02-06
ATA612874A (de) 1979-01-15
DE2337983C2 (de) 1984-03-22
FR2257856A1 (de) 1975-08-08
GB1481850A (en) 1977-08-03
SE7409603L (de) 1975-01-27
SE397585B (sv) 1977-11-07
AT351842B (de) 1979-08-10
CH572187A5 (de) 1976-01-30

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse