GB1264317A - - Google Patents
Info
- Publication number
- GB1264317A GB1264317A GB1264317DA GB1264317A GB 1264317 A GB1264317 A GB 1264317A GB 1264317D A GB1264317D A GB 1264317DA GB 1264317 A GB1264317 A GB 1264317A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- fluid
- clamped
- density
- aug
- 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
- 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
- G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
- G01L9/0008—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/74—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables of fluids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/002—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02863—Electric or magnetic parameters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
1,264,317. Measuring fluid density. SOLARTRON ELECTRONIC GROUP Ltd. 29 Aug., 1969 [30 Aug., 1968], No. 41646/68. Heading H4D. [Also in Division G1] Apparatus for measuring the density of a fluid comprises a hollow, thin-walled ferromagnetic cylinder located in the fluid with its lower edge clamped, and means for causing the wall to vibrate radially like a bell at the natural resonant frequency, which is indicative of the fluid density. As shown (Fig. 1), the cylinder 11 has a stepped flange 19, 20 at its lower end which is clamped to a base member 12, in turn clamped to a base flange 15. Inside the cylinder at antinodal positions of the cylinder vibrations, are drive coil 16 and pick-up coil 17 embedded in perpendicular relationship in a block 27 of epoxy resin and supported on base member 12. The cylinder 11 has a thickened ring 26 at its upper end to define a nodal position and is surrounded by a magnetic shield 25. The small overlap between flanged parts 19, 20 is basically flexible and forms a circular hinge for the transducer assembly. The test fluid enters via inlet 23, flows over both sides of the wall 18 and exits via outlet 24. The coils 16, 17 are connected via a plug-and-socket arrangement 29 to a transistor amplifier which maintains oscillation at the natural resonant frequency, measured and indicated on external apparatus. In a modification (Fig. 2, not shown), an inlet and outlet filter are assembled in the fluid flow path. In another embodiment (Fig. 5, not shown), the upper end of the cylinder 11 is closed by a solid plate, enabling the transducer to measure fluid pressure or pressure difference.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4164668 | 1968-08-30 | ||
| NL6916796A NL161882C (en) | 1968-08-30 | 1969-11-06 | TRANSMITTER FOR MEASURING DENSITY, PRESSURE OR PRESSURE DIFFERENCE IN A FLUID. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1264317A true GB1264317A (en) | 1972-02-23 |
Family
ID=26264720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1264317D Expired GB1264317A (en) | 1968-08-30 | 1968-08-30 |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB1264317A (en) |
| NL (1) | NL161882C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2400195A1 (en) * | 1977-08-12 | 1979-03-09 | Solartron Electronic Group | PRESSURE SENSORS |
| DE2930287A1 (en) * | 1978-08-14 | 1980-02-28 | Solartron Electronic Group | FOR MEASURING FLUID CHARACTERISTICS OF SPECIFIC CONVERTERS |
| DE4034883A1 (en) * | 1990-11-02 | 1992-05-07 | Fibronix Sensoren Gmbh | Vibrating tube-type liq. densimeter - has piezoelectric transducers within liq.-tight vibrating tube |
-
1968
- 1968-08-30 GB GB1264317D patent/GB1264317A/en not_active Expired
-
1969
- 1969-11-06 NL NL6916796A patent/NL161882C/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2400195A1 (en) * | 1977-08-12 | 1979-03-09 | Solartron Electronic Group | PRESSURE SENSORS |
| DE2930287A1 (en) * | 1978-08-14 | 1980-02-28 | Solartron Electronic Group | FOR MEASURING FLUID CHARACTERISTICS OF SPECIFIC CONVERTERS |
| DE4034883A1 (en) * | 1990-11-02 | 1992-05-07 | Fibronix Sensoren Gmbh | Vibrating tube-type liq. densimeter - has piezoelectric transducers within liq.-tight vibrating tube |
Also Published As
| Publication number | Publication date |
|---|---|
| NL161882B (en) | 1979-10-15 |
| NL6916796A (en) | 1971-05-10 |
| NL161882C (en) | 1980-03-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |