WO2004008043A3 - Heating element condition monitor - Google Patents

Heating element condition monitor Download PDF

Info

Publication number
WO2004008043A3
WO2004008043A3 PCT/US2003/022224 US0322224W WO2004008043A3 WO 2004008043 A3 WO2004008043 A3 WO 2004008043A3 US 0322224 W US0322224 W US 0322224W WO 2004008043 A3 WO2004008043 A3 WO 2004008043A3
Authority
WO
WIPO (PCT)
Prior art keywords
heating element
composition
impedance
condition monitor
location
Prior art date
Application number
PCT/US2003/022224
Other languages
French (fr)
Other versions
WO2004008043A2 (en
WO2004008043A9 (en
Inventor
Kevin B Peck
Noel H Johnson
William D Mcentire
Thomas J Berdner
Original Assignee
Mrl Ind
Kevin B Peck
Noel H Johnson
William D Mcentire
Thomas J Berdner
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
Priority claimed from US10/196,160 external-priority patent/US6956489B2/en
Application filed by Mrl Ind, Kevin B Peck, Noel H Johnson, William D Mcentire, Thomas J Berdner filed Critical Mrl Ind
Priority to JP2004521905A priority Critical patent/JP4890760B2/en
Priority to AU2003253943A priority patent/AU2003253943A1/en
Publication of WO2004008043A2 publication Critical patent/WO2004008043A2/en
Publication of WO2004008043A3 publication Critical patent/WO2004008043A3/en
Publication of WO2004008043A9 publication Critical patent/WO2004008043A9/en

Links

Classifications

    • 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0288—Applications for non specified applications
    • H05B1/0291—Tubular elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light

Abstract

A method for monitoring the condition of a heating element (11)involving installing the heating element (101)in a location and setting the initial composition Ci of the material as a reference baseline at an initial time Ti corresponding to said installation of the heating element (101). Data is then collected reflecting the subsequent composition Cs of the heating element material after a subsequent time Ts at the installed location and any change in the material composition of the heating element (101) between Ti and Tsis monitored. An alarm (508) is sent when the change reaches a threshold value indicating a possible failure condition. According to one embodiment, an impedance monitor is provided that calculates and compares impedance at the required levels of accuracy to determine changes in material composition. The impedance monitor, or portions thereof can be embedded within a microcontroller for increased portability and functionality.
PCT/US2003/022224 2002-07-17 2003-07-17 Heating element condition monitor WO2004008043A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004521905A JP4890760B2 (en) 2002-07-17 2003-07-17 Heating element status monitor
AU2003253943A AU2003253943A1 (en) 2002-07-17 2003-07-17 Heating element condition monitor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10/196,160 US6956489B2 (en) 2002-07-17 2002-07-17 Heating element condition monitor
US10/196,160 2002-07-17
US10/619,561 US7012538B2 (en) 2002-07-17 2003-07-16 Heating element condition monitor
US10/619,561 2003-07-16

Publications (3)

Publication Number Publication Date
WO2004008043A2 WO2004008043A2 (en) 2004-01-22
WO2004008043A3 true WO2004008043A3 (en) 2004-03-25
WO2004008043A9 WO2004008043A9 (en) 2004-05-21

Family

ID=32314321

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/022224 WO2004008043A2 (en) 2002-07-17 2003-07-17 Heating element condition monitor

Country Status (2)

Country Link
AU (1) AU2003253943A1 (en)
WO (1) WO2004008043A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5669987A (en) * 1994-04-13 1997-09-23 Canon Kabushiki Kaisha Abnormality detection method, abnormality detection apparatus, and solar cell power generating system using the same
US5702624A (en) * 1996-10-09 1997-12-30 Taiwan Semiconductors Manfuacturing Company, Ltd Compete hot plate temperature control system for hot treatment
US5927077A (en) * 1996-04-23 1999-07-27 Dainippon Screen Mfg. Co., Ltd. Processing system hot plate construction substrate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5669987A (en) * 1994-04-13 1997-09-23 Canon Kabushiki Kaisha Abnormality detection method, abnormality detection apparatus, and solar cell power generating system using the same
US5927077A (en) * 1996-04-23 1999-07-27 Dainippon Screen Mfg. Co., Ltd. Processing system hot plate construction substrate
US5702624A (en) * 1996-10-09 1997-12-30 Taiwan Semiconductors Manfuacturing Company, Ltd Compete hot plate temperature control system for hot treatment

Also Published As

Publication number Publication date
AU2003253943A1 (en) 2004-02-02
WO2004008043A2 (en) 2004-01-22
WO2004008043A9 (en) 2004-05-21
AU2003253943A8 (en) 2004-02-02

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