GB1297981A - - Google Patents
Info
- Publication number
- GB1297981A GB1297981A GB1297981DA GB1297981A GB 1297981 A GB1297981 A GB 1297981A GB 1297981D A GB1297981D A GB 1297981DA GB 1297981 A GB1297981 A GB 1297981A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cavity
- cavities
- sheet
- thickness
- micro
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
- G01B15/02—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring thickness
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
Abstract
1297981 Measuring displacement electrically COMMISSARIAT A L'ENERGIE ATOMIQUE 27 Feb 1970 [7 March 1969] 9630/70 Addition to 1173438 Heading G1N In order to measure the position of a surface of an electrically conductive body e.g. conductive liquid level, vibration or thickness of the body, the surface closes an open ended resonant cavity so that the latter's resonant frequency is determined by the spacing of the surface from the cavity. By using a test cavity provided with a displaceable plunger as described in Fig.1, parent Specification or in Specification 1197699, which plunger is moved until the resonant frequencies of both cavities, when supplied with the same micro-wave frequency, are the same and noting the movement of a micro-meter associated with the plunger the distance of the surface from the closed end of the cavity can be ascertained. In order to measure the thickness of a sheet two measuring cavities are employed positioned adjacent opposite surfaces of the sheet and each being provided with a test cavity and micro-wave generator. By knowing the distance between the cavities and determining the distances of the two surfaces from their respective cavities the thickness of the sheet can be calculated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR6906396A FR2036238A6 (en) | 1969-03-07 | 1969-03-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1297981A true GB1297981A (en) | 1972-11-29 |
Family
ID=9030278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1297981D Expired GB1297981A (en) | 1969-03-07 | 1970-02-27 |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE746687A (en) |
| CH (1) | CH520920A (en) |
| DE (1) | DE2010893A1 (en) |
| FR (1) | FR2036238A6 (en) |
| GB (1) | GB1297981A (en) |
| IT (1) | IT943550B (en) |
| LU (1) | LU60448A1 (en) |
| NL (1) | NL7003146A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023955B (en) * | 2019-12-10 | 2022-01-18 | 广东省智能制造研究所 | High-dynamic high-precision dimension measurement and defect detection system and method thereof |
| CN111023964B (en) * | 2019-12-10 | 2021-08-17 | 广东省智能制造研究所 | Online detection device for surface profile and surface quality |
-
1969
- 1969-03-07 FR FR6906396A patent/FR2036238A6/fr not_active Expired
-
1970
- 1970-02-27 GB GB1297981D patent/GB1297981A/en not_active Expired
- 1970-02-27 BE BE746687D patent/BE746687A/en unknown
- 1970-03-03 LU LU60448D patent/LU60448A1/xx unknown
- 1970-03-05 NL NL7003146A patent/NL7003146A/xx unknown
- 1970-03-06 IT IT6775970A patent/IT943550B/en active
- 1970-03-06 CH CH333370A patent/CH520920A/en not_active IP Right Cessation
- 1970-03-07 DE DE19702010893 patent/DE2010893A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| IT943550B (en) | 1973-04-10 |
| DE2010893A1 (en) | 1971-04-08 |
| LU60448A1 (en) | 1970-05-04 |
| FR2036238A6 (en) | 1970-12-24 |
| BE746687A (en) | 1970-07-31 |
| NL7003146A (en) | 1970-09-09 |
| CH520920A (en) | 1972-03-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |