GB864295A - Hydraulic remote indicating or control apparatus - Google Patents
Hydraulic remote indicating or control apparatusInfo
- Publication number
- GB864295A GB864295A GB607357A GB607357A GB864295A GB 864295 A GB864295 A GB 864295A GB 607357 A GB607357 A GB 607357A GB 607357 A GB607357 A GB 607357A GB 864295 A GB864295 A GB 864295A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bellows
- tube
- changes
- coupled
- temperature
- 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
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/20—Compensating for effects of temperature changes other than those to be measured, e.g. changes in ambient temperature
- G01K1/22—Compensating for effects of temperature changes other than those to be measured, e.g. changes in ambient temperature by means of fluid contained in a hollow body having parts which are deformable or displaceable under the pressure developed by the fluid
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/01—Control of temperature without auxiliary power
- G05D23/12—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid
- G05D23/125—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid the sensing element being placed outside a regulating fluid flow
- G05D23/126—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid the sensing element being placed outside a regulating fluid flow using a capillary tube
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Measuring Fluid Pressure (AREA)
- Control Of Temperature (AREA)
Abstract
864,295. Pressure gauges; indicating apparatus. ARIC Ltd. Feb. 21, 1958 [Feb. 22, 1957], No. 6073/57. Classes 106 (2) and 106 (4). [Also in Groups XIII and XX] Hydraulic remote indicating apparatus in which an indicator is actuated by an expansion chamber connected through an operating tube to a device which varies the volume of liquid filling the expansion chamber comprises a first compensating expansion chamber connected to a compensating tube adjacent the operating tube, to correct fully for temperature changes in the vicinity of the tube and partially for temperature changes in the vicinity of the expansion chambers, a second compensating expansion chamber to complete the correction for temperature changes in the vicinity of the expansion chambers, and independent adjustments for the two expansion chambers. In the thermometer shown, the liquid-filled bulb 21 is connected by a capillary tube 19 to a bellows 1, the expansion of which moves a rod 26 in a bearing 12. This rod carries a pivoted bellcrank 13 having a fulcrum 27, bearing on an arm 15, and an arm 28 against which is held, by a spring 23, a roller 29 on the arm of a bellcrank 10 which actuates a pointer 11 through a toothed sector 31 and pinion 32. Correcting movements are applied to the lower end of the bellows 1, the capillary tube 19 being looped at 25 to provide flexibility. The end of the bellows is attached to a pivoted arm 8 to which is coupled at an adjustable point a bellows 2 connected to a capillary tube 20 adjacent the tube 19. This compensates for changes in ambient temperature of the capillary and partly compensates for changes in temperature of the bellows 1. The compensation for the latter is completed by a bellows 3 having one end fixed and coupled at the other to an adjustable point on a lever 9 to which the bellows 2 is coupled. The pivoted lever 15 is coupled to a bi-metallic strip 14 which adjusts the fulcrum 27 to provide a second order correction for the fact that the volume of liquid in the bellows changes with temperature. The bellows may be replaced by Bourdon tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB607357A GB864295A (en) | 1957-02-22 | 1957-02-22 | Hydraulic remote indicating or control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB607357A GB864295A (en) | 1957-02-22 | 1957-02-22 | Hydraulic remote indicating or control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB864295A true GB864295A (en) | 1961-03-29 |
Family
ID=9807903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB607357A Expired GB864295A (en) | 1957-02-22 | 1957-02-22 | Hydraulic remote indicating or control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB864295A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104245013A (en) * | 2012-04-12 | 2014-12-24 | 普雷斯弗雷克斯股份公司 | Compensated capillary indicator |
-
1957
- 1957-02-22 GB GB607357A patent/GB864295A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104245013A (en) * | 2012-04-12 | 2014-12-24 | 普雷斯弗雷克斯股份公司 | Compensated capillary indicator |
| CN104245013B (en) * | 2012-04-12 | 2016-08-24 | 普雷斯弗雷克斯股份公司 | The capillary indicator compensated |
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