GB704162A - Improvements in and relating to fluid speed meters - Google Patents
Improvements in and relating to fluid speed metersInfo
- Publication number
- GB704162A GB704162A GB399751A GB399751A GB704162A GB 704162 A GB704162 A GB 704162A GB 399751 A GB399751 A GB 399751A GB 399751 A GB399751 A GB 399751A GB 704162 A GB704162 A GB 704162A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heater
- fluid
- tube
- hot junction
- thermo
- 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
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
- G01F1/688—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element
- G01F1/6888—Thermoelectric elements, e.g. thermocouples, thermopiles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
704,162. Fluid speed meters. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 8, 1952 [Feb. 19, 1951], No. 3997/51. Class 97(2) In a fluid speed meter of the kind in which the rate of flow is determined by the cooling effect of the fluid on an electrical heater, a thermo-couple is mounted with its hot junction close to the heater and its cold junction sufficiently remote from the heater as to be unaffected by the heat therefrom, and a shield for the heater and hot junction is shaped to direct part of the fluid over the heater and hot junction when the part of the meter carrying them is immersed in the flowing fluid, the heater and hot junction being electrically insulated from one another and from the fluid. As shown, the heater 1 is in the form of a hairpin loop of resistance wire the limbs 2, 3 of which are threaded through bores 4, 5 of a silica tube 6. Two wires 7, 8 of dissimilar materials are threaded through aperture bores 9, 10 in tube 6 and are united at 11 to form the hot junction and at 13 to form the cold junction of the thermo-couple. Leads from the heater and thermo-couple pass through a co-axial silica tube 12, the two tubes 6, 12 being housed in a metal tube 15 terminating above the lower end of tube 6. Cemented joints are made at the two ends of tube 15 and a cement covering is provided at the lower end of the tube 6 to prevent access of the fluid to the conductive parts. The exposed part of tube 6 is shielded by a member 16 as of metal which terminates below heater 1 and hot junction 11 and is provided with an inlet 18 for the fluid which flows past the heater and hot junction at a speed less than, but related to, that of the free stream. The heater is supplied with electrical energy at a known rate and the fluid speed is determined from a recorder or indicator connected to the thermocouple by the leads passing through tube 12. In a further form, the two silica tubes 6, 12 are disposed at right angles, and the shield 16 is closed at the end adjacent the heater and hot junction and provided with a fluid outlet as well as a fluid inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB399751A GB704162A (en) | 1951-02-19 | 1951-02-19 | Improvements in and relating to fluid speed meters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB399751A GB704162A (en) | 1951-02-19 | 1951-02-19 | Improvements in and relating to fluid speed meters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB704162A true GB704162A (en) | 1954-02-17 |
Family
ID=9768813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB399751A Expired GB704162A (en) | 1951-02-19 | 1951-02-19 | Improvements in and relating to fluid speed meters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB704162A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2870305A (en) * | 1955-04-04 | 1959-01-20 | Ling Sung-Ching | Constructions for anemometers of the hot wire type |
| US2890586A (en) * | 1953-09-08 | 1959-06-16 | Cons Electrodynamics Corp | Apparatus for detecting movements of a fluid |
| US4016758A (en) * | 1975-09-09 | 1977-04-12 | Taylor Julian S | Thermal gauge probe |
-
1951
- 1951-02-19 GB GB399751A patent/GB704162A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2890586A (en) * | 1953-09-08 | 1959-06-16 | Cons Electrodynamics Corp | Apparatus for detecting movements of a fluid |
| US2870305A (en) * | 1955-04-04 | 1959-01-20 | Ling Sung-Ching | Constructions for anemometers of the hot wire type |
| US4016758A (en) * | 1975-09-09 | 1977-04-12 | Taylor Julian S | Thermal gauge probe |
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