GB1527082A - Monitoring for incipient electrode failure in joule effect heating - Google Patents

Monitoring for incipient electrode failure in joule effect heating

Info

Publication number
GB1527082A
GB1527082A GB42042/75A GB4204275A GB1527082A GB 1527082 A GB1527082 A GB 1527082A GB 42042/75 A GB42042/75 A GB 42042/75A GB 4204275 A GB4204275 A GB 4204275A GB 1527082 A GB1527082 A GB 1527082A
Authority
GB
United Kingdom
Prior art keywords
electrode
resistance
incipient
voltage
failure
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
GB42042/75A
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.)
Owens Corning
Original Assignee
Owens Corning Fiberglas Corp
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 Owens Corning Fiberglas Corp filed Critical Owens Corning Fiberglas Corp
Publication of GB1527082A publication Critical patent/GB1527082A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • G05D23/2401—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor using a heating element as a sensing element
    • 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
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0019—Circuit arrangements
    • H05B3/0023—Circuit arrangements for heating by passing the current directly across the material to be heated

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Furnace Details (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

1527082 Measuring resistance OWENSCORNING FIBERGLAS CORP 14 Oct 1975 [15 Oct 1974] 42042/75 Heading G1U In a process for heating glass by the Joule effect, incipient electrode failure is detected by monitoring voltage across and current flowing two pairs of electrodes, an indication of resistance derived therefrom being provided. Heating of the molten glass 18 is achieved by pulses derived from controlled switching 28 of paralleled thyristors 26, 27 in the supply paths between supply transformers 29 and electrode pairs with single 12-15 or multi-elements 16. Current and voltage to each electrode pair is sequentially monitored under computer 51 control via de-coder 68, relays R1-R6 and their contacts. Conventional R.M.S. converters 48, 61 apply the true R.M.S. voltage and current values to the computer 51 which computes the resistance, compares it to a predetermined value, which may be periodically updated to account for normal acceptable ageing, and operates a display. The display incorporates an electrode identification and alarm indication, operated when the resistance of the electrode pair exceeds the predetermined value, indicating incipient failure.
GB42042/75A 1974-10-15 1975-10-14 Monitoring for incipient electrode failure in joule effect heating Expired GB1527082A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51454974A 1974-10-15 1974-10-15

Publications (1)

Publication Number Publication Date
GB1527082A true GB1527082A (en) 1978-10-04

Family

ID=24047680

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42042/75A Expired GB1527082A (en) 1974-10-15 1975-10-14 Monitoring for incipient electrode failure in joule effect heating

Country Status (11)

Country Link
JP (1) JPS5917051B2 (en)
AU (1) AU501033B2 (en)
BE (1) BE834497A (en)
BR (1) BR7506656A (en)
CA (1) CA1024598A (en)
DE (1) DE2545532A1 (en)
FI (1) FI66257C (en)
FR (1) FR2288064A1 (en)
GB (1) GB1527082A (en)
IT (1) IT1043337B (en)
SE (1) SE7511463L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000008538A1 (en) * 1998-08-06 2000-02-17 BSH Bosch und Siemens Hausgeräte GmbH Domestic appliance

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59128221A (en) * 1983-01-11 1984-07-24 Yokohamashi Electric melting apparatus
WO2012132474A1 (en) * 2011-03-31 2012-10-04 ＡｖａｎＳｔｒａｔｅ株式会社 Glass substrate production method
JP5668066B2 (en) * 2011-03-31 2015-02-12 ＡｖａｎＳｔｒａｔｅ株式会社 Manufacturing method of glass substrate
GB2512042A (en) * 2012-12-31 2014-09-24 Continental Automotive Systems Resistance determination with increased sensitivity for temperature control of heated automotive component
GB2512041A (en) * 2012-12-31 2014-09-24 Continental Automotive Systems Resistance determination for temperature control of heated automotive components
JP6015828B2 (en) * 2015-08-13 2016-10-26 日本電気硝子株式会社 Heating element inspection method and inspection apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE554543A (en) *
DE1671439A1 (en) * 1965-11-11 1971-09-30 Knapsack Ag Arrangement for measuring the current on the individual electrodes of electrolytic cells
FR1537495A (en) * 1967-09-21 1968-08-23 Electric resistance furnaces incorporating current control means
GB1210432A (en) * 1968-02-20 1970-10-28 Quicfit & Quartz Ltd Improvements in and relating to electronic circuits for temperature control
US3681758A (en) * 1970-04-29 1972-08-01 Northrop Corp Data acquisition unit with memory
US3636227A (en) * 1970-10-22 1972-01-18 Corning Glass Works Control systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000008538A1 (en) * 1998-08-06 2000-02-17 BSH Bosch und Siemens Hausgeräte GmbH Domestic appliance

Also Published As

Publication number Publication date
DE2545532A1 (en) 1976-04-22
BR7506656A (en) 1976-08-31
JPS5165441A (en) 1976-06-07
FR2288064A1 (en) 1976-05-14
CA1024598A (en) 1978-01-17
FI66257B (en) 1984-05-31
JPS5917051B2 (en) 1984-04-19
AU501033B2 (en) 1979-06-07
FI66257C (en) 1984-09-10
AU8544875A (en) 1977-04-07
IT1043337B (en) 1980-02-20
FR2288064B1 (en) 1982-07-23
SE7511463L (en) 1976-04-15
FI752853A (en) 1976-04-16
BE834497A (en) 1976-02-02

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Legal Events

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