GB914101A - Improvements in or relating to electrical indicating and/or control apparatus - Google Patents
Improvements in or relating to electrical indicating and/or control apparatusInfo
- Publication number
- GB914101A GB914101A GB726060A GB726060A GB914101A GB 914101 A GB914101 A GB 914101A GB 726060 A GB726060 A GB 726060A GB 726060 A GB726060 A GB 726060A GB 914101 A GB914101 A GB 914101A
- Authority
- GB
- United Kingdom
- Prior art keywords
- variable
- windings
- signals
- limits
- allowable
- 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
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B1/00—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values
- G05B1/01—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric
- G05B1/02—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric for comparing analogue signals
- G05B1/025—Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric for comparing analogue signals using inductance means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
914,101. Measuring electrically. WAYNE KERR LABORATORIES Ltd., and CALVERT, R. May 25, 1961 [March 1, 1960], No. 7260/60. Class 40 (1). [Also in Group XXXV] A variable, e.g. temperature or liquid level, varies impedance 10 to produce a signal applied to windings 14, 15 on two transformers 16, 17; impedances 18, 22 determine signals in windings 19, 23, one corresponding to the upper allowable limit of the variable, and the other to the low allowable limit; windings 20, 24 thus develop signals corresponding to the differences between the variable and its upper and lower allowable limits; these signals are applied to phase discriminating detectors 21, 25, one of which delivers an output when the variable moves outside its allowable limits; detectors 21, 25 control an indicator or servomotor 26 to bring the variable back between the limits defined by 18.22. Further windings 30, 31 may be used to sum the difference signals algebraically and provide at 33 an indication of the deviation of the variable from the mean of the upper and lower allowable limits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB726060A GB914101A (en) | 1960-03-01 | 1960-03-01 | Improvements in or relating to electrical indicating and/or control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB726060A GB914101A (en) | 1960-03-01 | 1960-03-01 | Improvements in or relating to electrical indicating and/or control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB914101A true GB914101A (en) | 1962-12-28 |
Family
ID=9829699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB726060A Expired GB914101A (en) | 1960-03-01 | 1960-03-01 | Improvements in or relating to electrical indicating and/or control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB914101A (en) |
-
1960
- 1960-03-01 GB GB726060A patent/GB914101A/en not_active Expired
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