GB1515662A - Transducers - Google Patents
TransducersInfo
- Publication number
- GB1515662A GB1515662A GB4548372A GB4548372A GB1515662A GB 1515662 A GB1515662 A GB 1515662A GB 4548372 A GB4548372 A GB 4548372A GB 4548372 A GB4548372 A GB 4548372A GB 1515662 A GB1515662 A GB 1515662A
- Authority
- GB
- United Kingdom
- Prior art keywords
- capsule
- gold
- shell
- pressure
- plating
- 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
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/10—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the capsule type
- G01L7/102—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the capsule type construction or mounting of capsules
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0082—Transmitting or indicating the displacement of capsules by electric, electromechanical, magnetic, or electromechanical means
- G01L9/0083—Transmitting or indicating the displacement of capsules by electric, electromechanical, magnetic, or electromechanical means using variations in ohmic resistance
Abstract
1515662 Pressure gauges: fluid-pressure transducers KDG INSTRUMENTS Ltd 3 Jan 1974 [3 Oct 1972] 45483/72 Headings G1L and G1N A pressure transducer for use immersed in sea water comprises a housing with a resilient wall, movement of which accompanies a response of the transducer, the wall being formed of a berylliumcopper alloy coated on that area exposed to sea water with gold, e.g. by electro-plating, as a protection against corrosion. Such a transducer, shown in Fig. 2, comprises an outer casing 10 within which fits a shell 11, sea water being admitted via a central bore 13 at one end. The shell is sealed at the end facing bore 13 by a plug 17 and screwed within a central opening of this plug is a boss 20, to the outer end of which is secured, as by brazing, one diaphragm 21a of a nesting type pressure capsule 21, the other diaphragm 21b of which is attached to a spring- loaded plunger 22 passing through a central opening in the boss 20. Plunger 22 is connected via an arm 24 to a wiper arm 27 movable over a resistance element 28. Terminals 29 are provided in the end-wall of the shell 11 for connection to the resistance element 28. The interior of the shell 11, and the interior of the capsule 21, are brought to a low pressure via an exhaust tube (not shown) which is then sealed. The deflection of capsule 21 is a measure of the absolute pressure applied to its external surface through bore 13. The diaphragms 21a, 21b of the capsule 21 are formed from a beryllium-copper alloy which is electro-plated with gold. In order to verify that the gold layer is complete, the capsule after plating is made the anode in a dilute solution of ammonium sulphate in dilute ammonium hydroxide with a noble metal, preferably gold, as cathode. If a voltage of up to 1À5V is applied between the two electrodes, any pin holes in the gold plating, or any other area where copper is exposed to the electrolyte, become subject to electrolytic action and produce striae of a bright blue cuprammonium complex which is readily visible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4548372A GB1515662A (en) | 1972-10-03 | 1972-10-03 | Transducers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4548372A GB1515662A (en) | 1972-10-03 | 1972-10-03 | Transducers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1515662A true GB1515662A (en) | 1978-06-28 |
Family
ID=10437391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4548372A Expired GB1515662A (en) | 1972-10-03 | 1972-10-03 | Transducers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1515662A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2153538A (en) * | 1984-01-24 | 1985-08-21 | Roy Edward Carter | Pressure transducer |
| CN117288368A (en) * | 2023-11-24 | 2023-12-26 | 微智医疗器械有限公司 | Pressure sensor assembly manufacturing method and pressure sensor assembly |
-
1972
- 1972-10-03 GB GB4548372A patent/GB1515662A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2153538A (en) * | 1984-01-24 | 1985-08-21 | Roy Edward Carter | Pressure transducer |
| CN117288368A (en) * | 2023-11-24 | 2023-12-26 | 微智医疗器械有限公司 | Pressure sensor assembly manufacturing method and pressure sensor assembly |
| CN117288368B (en) * | 2023-11-24 | 2024-01-30 | 微智医疗器械有限公司 | Pressure sensor assembly manufacturing method and pressure sensor assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |