DE2829264C2 - - Google Patents
Info
- Publication number
- DE2829264C2 DE2829264C2 DE2829264A DE2829264A DE2829264C2 DE 2829264 C2 DE2829264 C2 DE 2829264C2 DE 2829264 A DE2829264 A DE 2829264A DE 2829264 A DE2829264 A DE 2829264A DE 2829264 C2 DE2829264 C2 DE 2829264C2
- Authority
- DE
- Germany
- Prior art keywords
- magnetic field
- receiver
- gauge
- thickness
- sensors
- 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
Links
- 239000000463 material Substances 0.000 claims description 63
- 238000005259 measurement Methods 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000010618 wire wrap Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
- G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
- G01B2210/40—Caliper-like sensors
- G01B2210/46—Caliper-like sensors with one or more detectors on a single side of the object to be measured and with a transmitter on the other side
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Inverter Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/819,469 US4107606A (en) | 1976-12-14 | 1977-07-27 | Non-contacting electromagnetic thickness gauge for sheet measurement having improved small distance sensitivity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2829264A1 DE2829264A1 (de) | 1979-02-08 |
| DE2829264C2 true DE2829264C2 (US06373033-20020416-M00018.png) | 1989-09-28 |
Family
ID=25228254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19782829264 Granted DE2829264A1 (de) | 1977-07-27 | 1978-07-04 | Vorrichtung zum beruehrungsfreien messen der dicke von nichtmagnetischem, bahnenfoermigem material |
Country Status (5)
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57197434A (en) * | 1981-05-29 | 1982-12-03 | Hitachi Ltd | Measuring method of tension |
| JPS59122505U (ja) * | 1983-02-07 | 1984-08-17 | 株式会社キ−エンス | 二枚送り検出器の送信コイル |
| JPS59230136A (ja) * | 1983-06-09 | 1984-12-24 | Rohm Co Ltd | 発光表示装置の光洩れ検査方法 |
| DE3331407A1 (de) * | 1983-08-31 | 1985-03-14 | Helmut Fischer GmbH & Co Institut für Elektronik und Meßtechnik, 7032 Sindelfingen | Elektromagnetische mess-sonde |
| JPS6166104A (ja) * | 1984-09-07 | 1986-04-04 | Anelva Corp | 金属薄膜膜厚測定方法 |
| DE3612914A1 (de) * | 1986-04-17 | 1987-10-22 | Heidelberger Druckmasch Ag | Vorrichtung zum messen der dicke von papier oder dergleichen |
| US4813147A (en) * | 1987-03-27 | 1989-03-21 | Amp Incorporated | Apparatus for interacting with both sides of a two-sided strip |
| DE4011646A1 (de) * | 1990-04-11 | 1991-10-24 | Micro Epsilon Messtechnik | Dickenmesseinrichtung |
| FI103918B (fi) | 1998-02-26 | 1999-10-15 | Metso Paper Automation Oy | Menetelmä ja laite liikkuvan rainan ominaisuuksien mittaamiseksi |
| SE517293C2 (sv) * | 1999-06-30 | 2002-05-21 | Abb Ab | Förfarande och anordning för induktiv mätning av geometrisk dimension och elektrisk egenskap med motriktade magnetfält |
| US7205166B2 (en) * | 2002-06-28 | 2007-04-17 | Lam Research Corporation | Method and apparatus of arrayed, clustered or coupled eddy current sensor configuration for measuring conductive film properties |
| WO2009024187A1 (fr) * | 2007-08-21 | 2009-02-26 | Thomas Edye | Dispositif de mesure sans contact de l'epaisseur de films ou de couches minces en defilement |
| US10119837B2 (en) * | 2016-07-06 | 2018-11-06 | Biosense Webster (Israel) Ltd. | Magnetic-field generating circuit for a tracking system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE480971A (US06373033-20020416-M00018.png) * | 1948-03-05 | |||
| US2563254A (en) * | 1948-05-10 | 1951-08-07 | Hydril Corp | Thickness indicator |
| US2665333A (en) * | 1950-11-30 | 1954-01-05 | Libbey Owens Ford Glass Co | Apparatus for measuring thickness of sheet material |
| GB843624A (en) * | 1955-12-19 | 1960-08-04 | Roe A V & Co Ltd | Improvements relating to thickness measuring instruments |
| US3528002A (en) * | 1968-01-04 | 1970-09-08 | Conrac Corp | Caliper with air bearings for continuously moving sheet material |
| US3696290A (en) * | 1970-07-22 | 1972-10-03 | Hays Corp | Magnetic non-contact thickness gauge with means to compensate the effects of stray fields on the gauge |
| SU394654A1 (ru) * | 1970-12-28 | 1973-08-22 | УСТРОЙСТВО дл ИЗМЕРЕНИЯ ТОЛЩИНЫ КРУПНОГАБАРИТНЫХ ИЗДЕЛИЙ | |
| DE2640155C3 (de) * | 1976-09-07 | 1982-02-11 | Electronic Production Aids Co., Ltd., Worcester Park, Surrey | Nach dem Wirbelstromprinzip arbeitende Meßvorrichtung zur kontinuierlichen Messung der Dicke eines sich bewegenden, aus Metall bestehenden Meßobjekts. |
-
1978
- 1978-02-15 FR FR7804277A patent/FR2398999A1/fr active Granted
- 1978-04-24 CA CA301,795A patent/CA1096956A/en not_active Expired
- 1978-07-04 DE DE19782829264 patent/DE2829264A1/de active Granted
- 1978-07-19 IT IT25874/78A patent/IT1097875B/it active
- 1978-07-26 JP JP53091378A patent/JPS5839283B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5425755A (en) | 1979-02-26 |
| DE2829264A1 (de) | 1979-02-08 |
| CA1096956A (en) | 1981-03-03 |
| FR2398999A1 (fr) | 1979-02-23 |
| FR2398999B1 (US06373033-20020416-M00018.png) | 1985-05-17 |
| IT7825874A0 (it) | 1978-07-19 |
| IT1097875B (it) | 1985-08-31 |
| JPS5839283B2 (ja) | 1983-08-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |