GB761880A - Improvements in and relating to a device for recording the density of a liquid - Google Patents
Improvements in and relating to a device for recording the density of a liquidInfo
- Publication number
- GB761880A GB761880A GB3270053A GB3270053A GB761880A GB 761880 A GB761880 A GB 761880A GB 3270053 A GB3270053 A GB 3270053A GB 3270053 A GB3270053 A GB 3270053A GB 761880 A GB761880 A GB 761880A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bridge
- recorder
- liquid
- density
- hydrometer
- 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
- 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
- G01N9/10—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing bodies wholly or partially immersed in fluid materials
- G01N9/12—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing bodies wholly or partially immersed in fluid materials by observing the depth of immersion of the bodies, e.g. hydrometers
- G01N9/18—Special adaptations for indicating, recording, or control
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
Abstract
761,880. Electric indicating systems. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Nov. 5, 1954 [Nov. 25, 1953], No. 32700/53. Class 40 (1). In a device for recording the density of a liquid using a hydrometer, movements of which are sensed by a ferromagnetic wire carried thereby and a coacting coil system connected through a bridge circuit to the recorder, linearity of the recorder response relative to liquid density changes is achieved by appropriate dimensioning of the wire and the circuit components. As shown, a glass hydrometer 12, Fig. 4, floats in the liquid whose density is to be measured, in a constant level chamber 14. The hydrometer stem carries an iron wire enclosed in a corrosion resistant sheath 13 disposed within a transmitter coil system 15, and a resistance thermometer 16 used for temperature compensation is disposed in a sheath in the liquid inlet to the chamber 14. Circuitry, Fig. 2. The coil system 15 comprises an A.C. energized primary coil 2 mounted on or inside a pair of similar secondary coils R<SP>1</SP>, R<SP>2</SP> connected in series aiding in a bridge circuit R<SP>1</SP>-R<SP>8</SP> the component values of which are chosen as disclosed in the Specification to achieve linearity of the recorder response. The galvanometer 3 of the self-balancing recorder is connected across the bridge output in series with a temperature compensating voltage applied at 4, 5. The bridge is balanced by automatic adjustment of R<SP>6</SP>, and R<SP>4</SP> is adjustable for zeroizing the recorder. The rectifiers 7, 8 permit use of a D.C. recorder but may be dispensed with, Fig. 1 (not shown), for A.C. operation. Temperature compensation, Fig. 3. The compensating voltage at 4, 5 is derived from a bridge one arm of which includes the winding 9 of the resistance thermometer 16, Fig. 4. The bridge is fed from the same A.C. source 10- 11 which feeds the coil 2, Fig. 2, through a potentiometer R<SP>9</SP> ganged with the bridge balancing resistor R<SP>6</SP>, Fig. 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3270053A GB761880A (en) | 1953-11-25 | 1953-11-25 | Improvements in and relating to a device for recording the density of a liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3270053A GB761880A (en) | 1953-11-25 | 1953-11-25 | Improvements in and relating to a device for recording the density of a liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB761880A true GB761880A (en) | 1956-11-21 |
Family
ID=10342705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3270053A Expired GB761880A (en) | 1953-11-25 | 1953-11-25 | Improvements in and relating to a device for recording the density of a liquid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB761880A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2585467A1 (en) * | 1985-07-23 | 1987-01-30 | Commissariat Energie Atomique | APPARATUS FOR AUTOMATICALLY MEASURING THE APPARENT WEIGHT OF A LIQUID-LOADING SLUDGE, AUTOMATIC MEASUREMENT SYSTEM OF THE PONSAR INDEX OF SUCH SLUD, USING THE APPARATUS, AND METHOD OF MEASURING THE INDEX |
| WO2018093527A1 (en) * | 2016-11-15 | 2018-05-24 | Fresenius Medical Care Holdings, Inc. | Digital hydrometer assistant reader |
-
1953
- 1953-11-25 GB GB3270053A patent/GB761880A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2585467A1 (en) * | 1985-07-23 | 1987-01-30 | Commissariat Energie Atomique | APPARATUS FOR AUTOMATICALLY MEASURING THE APPARENT WEIGHT OF A LIQUID-LOADING SLUDGE, AUTOMATIC MEASUREMENT SYSTEM OF THE PONSAR INDEX OF SUCH SLUD, USING THE APPARATUS, AND METHOD OF MEASURING THE INDEX |
| EP0210916A1 (en) * | 1985-07-23 | 1987-02-04 | Commissariat A L'energie Atomique | Apparatus for measuring the apparent weight of mud suspended in a liquid, and apparatus and method for measuring Ponsar's index of such a mud |
| US4779462A (en) * | 1985-07-23 | 1988-10-25 | Commissariat A L'energie Atomique | Apparatus for the automatic measurement of the apparent density of the mud in a liquid, system for the automatic measurement of the ponsar index of such a mud using the apparatus and process for measuring said index |
| WO2018093527A1 (en) * | 2016-11-15 | 2018-05-24 | Fresenius Medical Care Holdings, Inc. | Digital hydrometer assistant reader |
| US10379023B2 (en) | 2016-11-15 | 2019-08-13 | Fresenius Medical Care Holdings, Inc. | Digital hydrometer assistant reader |
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