GB1370869A - Method and apparatus for producing a signal proportional to the electrical resistance across electrodes or workpiece holders - Google Patents

Method and apparatus for producing a signal proportional to the electrical resistance across electrodes or workpiece holders

Info

Publication number
GB1370869A
GB1370869A GB1899573A GB1899573A GB1370869A GB 1370869 A GB1370869 A GB 1370869A GB 1899573 A GB1899573 A GB 1899573A GB 1899573 A GB1899573 A GB 1899573A GB 1370869 A GB1370869 A GB 1370869A
Authority
GB
United Kingdom
Prior art keywords
voltage
measured
multiplier
resistance
constant
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
GB1899573A
Other languages
English (en)
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.)
Messer Griesheim GmbH
Original Assignee
Messer Griesheim GmbH
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 Messer Griesheim GmbH filed Critical Messer Griesheim GmbH
Publication of GB1370869A publication Critical patent/GB1370869A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/20—Measuring earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates
    • G01R27/205—Measuring contact resistance of connections, e.g. of earth connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/24—Electric supply or control circuits therefor
    • B23K11/25—Monitoring devices
    • B23K11/251—Monitoring devices using analogue means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Resistance Welding (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
GB1899573A 1972-04-20 1973-04-19 Method and apparatus for producing a signal proportional to the electrical resistance across electrodes or workpiece holders Expired GB1370869A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722219284 DE2219284C3 (de) 1972-04-20 1972-04-20 Verfahren und Einrichtung zum Messen des Widerstandes, insbesondere des Gesamtwiderstandes beim Widerstandspunktschweißen

Publications (1)

Publication Number Publication Date
GB1370869A true GB1370869A (en) 1974-10-16

Family

ID=5842665

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1899573A Expired GB1370869A (en) 1972-04-20 1973-04-19 Method and apparatus for producing a signal proportional to the electrical resistance across electrodes or workpiece holders

Country Status (7)

Country Link
AT (1) AT333378B (enExample)
CH (1) CH560906A5 (enExample)
DE (1) DE2219284C3 (enExample)
FR (1) FR2180741B1 (enExample)
GB (1) GB1370869A (enExample)
IT (1) IT980261B (enExample)
NL (1) NL7305369A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139361A (en) * 1983-12-30 1984-11-07 Metal Box Plc Monitoring weld voltages
GB2173912A (en) * 1985-04-01 1986-10-22 Bristol Myers Co Weld resistance measuring apparatus
NL1028829C2 (nl) * 2005-04-20 2006-10-23 Fontijne Grotnes B V Werkwijze en systeem voor het aan elkaar lassen van delen.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106493A3 (en) * 1982-09-10 1986-02-05 The Welding Institute Monitoring in-service resistance of ac conductors

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139361A (en) * 1983-12-30 1984-11-07 Metal Box Plc Monitoring weld voltages
GB2173912A (en) * 1985-04-01 1986-10-22 Bristol Myers Co Weld resistance measuring apparatus
GB2173912B (en) * 1985-04-01 1989-06-21 Bristol Myers Co Spot welder
NL1028829C2 (nl) * 2005-04-20 2006-10-23 Fontijne Grotnes B V Werkwijze en systeem voor het aan elkaar lassen van delen.
US8933362B2 (en) 2005-04-20 2015-01-13 Fontijne Grotnes B.V. Method and system for welding parts together

Also Published As

Publication number Publication date
DE2219284C3 (de) 1975-10-23
IT980261B (it) 1974-09-30
FR2180741A1 (enExample) 1973-11-30
CH560906A5 (enExample) 1975-04-15
ATA192473A (de) 1976-03-15
DE2219284A1 (de) 1973-11-08
AT333378B (de) 1976-11-25
NL7305369A (enExample) 1973-10-23
DE2219284B2 (de) 1975-02-27
FR2180741B1 (enExample) 1976-05-21

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee