GB840552A - Improvements in or relating to the measurement of wall thickness of metallic articles - Google Patents
Improvements in or relating to the measurement of wall thickness of metallic articlesInfo
- Publication number
- GB840552A GB840552A GB3551856A GB3551856A GB840552A GB 840552 A GB840552 A GB 840552A GB 3551856 A GB3551856 A GB 3551856A GB 3551856 A GB3551856 A GB 3551856A GB 840552 A GB840552 A GB 840552A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wall thickness
- coil
- nov
- conductor
- series
- 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
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
840,552. Electric tests. BRITISH INSULATED CALLENDER'S CABLES Ltd. Nov. 19,1957 [Nov. 20,1956], No. 35518/56. Class 37. The wall thickness of metal articles, such as sheet-strip, tubing and cable sheaths 3, is determined by passing a constant current through the wall from electrodes 3 so that a magnetic field is produced, and adjusting the height of a conductor 4 in series with the sheet path so that the resultant magnetic field, as detected by a ferrite-cored coil 6 is zero. The height of the conductor as measured on the adjusting screw 11 is a measure of wall thickness. An alternating supply is used and the coil is tuned to the A.C. frequency by capacitor 7. The contact members are held in a frame 5 of heat and electrical insulating material which also supports the coil 6. In an alternative arrangement (not shown) the field is arranged to deflect the electron path in a triode valve the heater of which is fed with A.C. and the grid of which consists of a slotted plate through which the electrons pass. Thus the output is a series of " squarish " pulses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3551856A GB840552A (en) | 1956-11-20 | 1956-11-20 | Improvements in or relating to the measurement of wall thickness of metallic articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3551856A GB840552A (en) | 1956-11-20 | 1956-11-20 | Improvements in or relating to the measurement of wall thickness of metallic articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB840552A true GB840552A (en) | 1960-07-06 |
Family
ID=10378640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3551856A Expired GB840552A (en) | 1956-11-20 | 1956-11-20 | Improvements in or relating to the measurement of wall thickness of metallic articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB840552A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988004028A1 (en) * | 1986-11-25 | 1988-06-02 | Battelle Memorial Institute | Method for detecting thickness variations in the wall of a current conducting tubular body |
| CN116282411A (en) * | 2023-03-28 | 2023-06-23 | 宁夏大学 | Electric vortex type sea water desalination chip based on combined control of transverse electric field and longitudinal electric field |
-
1956
- 1956-11-20 GB GB3551856A patent/GB840552A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988004028A1 (en) * | 1986-11-25 | 1988-06-02 | Battelle Memorial Institute | Method for detecting thickness variations in the wall of a current conducting tubular body |
| CH670504A5 (en) * | 1986-11-25 | 1989-06-15 | Battelle Memorial Institute | |
| US4947132A (en) * | 1986-11-25 | 1990-08-07 | Battelle Memorial Institute | Method for detecting thickness variations in the wall of a tubular body which conducts electricity |
| CN116282411A (en) * | 2023-03-28 | 2023-06-23 | 宁夏大学 | Electric vortex type sea water desalination chip based on combined control of transverse electric field and longitudinal electric field |
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