GB673495A - Electronic high precision dial gauge - Google Patents
Electronic high precision dial gaugeInfo
- Publication number
- GB673495A GB673495A GB12089/50A GB1208950A GB673495A GB 673495 A GB673495 A GB 673495A GB 12089/50 A GB12089/50 A GB 12089/50A GB 1208950 A GB1208950 A GB 1208950A GB 673495 A GB673495 A GB 673495A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oscillator
- ratiometer
- condenser
- frequency
- output
- 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
- G01B7/08—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using capacitive means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
673,495. Frequency and capacitance measurements. SOC. ANON. DITE ETABLISSMENTS E. BELIN. May 15, 1950 [May 16, 1949], No. 12089/50. Class 37. [Also in Group XXXVIII] The output frequency of a single tube phase-shift oscillator is determined by the distance apart of plates 2, 3 of a linear dimension gauge condenser 1 which forms with resistance 7 the final mesh in the phase-shifting network of the oscillator. The output of the oscillator is taken through an amplifier 15 and transformer 16 and applied across series resonant circuits 17, 18 respectively tuned above and below a selected output frequency corresponding to a standard or comparison dimension between condenser plates 2, 3. The two coils 19, 20 of a ratiometer are fed with D.C. through rectifier/resistance combinations in the resonant circuits 17, 18. In use, for example with operation of the gauge condenser 1 producing an increase in frequency of the oscillator output the current through coil 19 increases and the current through coil 20 decreases so that the ratiometer pointer takes up a position indicative of the dimension undergoing measurement. As shown, a centre-zero milliammeter may be used instead of the ratiometer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR673495X | 1949-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB673495A true GB673495A (en) | 1952-06-04 |
Family
ID=9018160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12089/50A Expired GB673495A (en) | 1949-05-16 | 1950-05-15 | Electronic high precision dial gauge |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB673495A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE910233C (en) * | 1952-07-15 | 1954-04-29 | Hans Bretschneider Dipl Ing | Arrangement for measuring the blade clearance on flow machines |
-
1950
- 1950-05-15 GB GB12089/50A patent/GB673495A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE910233C (en) * | 1952-07-15 | 1954-04-29 | Hans Bretschneider Dipl Ing | Arrangement for measuring the blade clearance on flow machines |
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