GB1301082A - Specific gravity and refractive index measurements - Google Patents

Specific gravity and refractive index measurements

Info

Publication number
GB1301082A
GB1301082A GB54169/68A GB5416968A GB1301082A GB 1301082 A GB1301082 A GB 1301082A GB 54169/68 A GB54169/68 A GB 54169/68A GB 5416968 A GB5416968 A GB 5416968A GB 1301082 A GB1301082 A GB 1301082A
Authority
GB
United Kingdom
Prior art keywords
refractive index
block
photo
light
face
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
Application number
GB54169/68A
Inventor
Dennis Vincent Evans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RICHMOND ELECTRONICS MARKYATE
Original Assignee
RICHMOND ELECTRONICS MARKYATE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by RICHMOND ELECTRONICS MARKYATE filed Critical RICHMOND ELECTRONICS MARKYATE
Priority to GB54169/68A priority Critical patent/GB1301082A/en
Publication of GB1301082A publication Critical patent/GB1301082A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/43—Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/484—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring electrolyte level, electrolyte density or electrolyte conductivity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/4133—Refractometers, e.g. differential
    • G01N2021/414—Correcting temperature effect in refractometers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1301082 Measuring refractive index photo-electrically; measuring state of charge of a battery RICHMOND ELECTRONICS (MARKYATE) Ltd 13 Feb 1970 [14 Nov 1968] 54169/68 Headings G1A and G1U [Also in Divisions G2 and G4] The refractive index of a fluid is measured, in order to determine the specific gravity thereof, by means of a probe comprising a translucent block 1, means 4 for directing light towards a surface 2 of the block which forms an interface with the fluid, and means for receiving light distributed along a line 6 reached by the light after internal reflection at the interface, the extent of illumination along the line being dependent on the refractive index of the fluid. The probe may monitor flowing fluids or designed for use in testing inaccessible fluids, for example, in a battery, the state of charge of which is to be checked by determination of the specific gravity, Fig. 4. The light source which may be a permanent emitter of the type employing a beta source and which may be monochromatic may be mounted at one corner of block 1, which may be of plastics or glass, a shield member 5 being provided internally of the block, to prevent light passing direct to detection surface 6. One or more photo-cells or photodiodes may be mounted adjacent face 6 to provide an analog or digital measure of the illuminated part y of face 6. Alternatively, Fig. 2 (not shown), light may be conducted to the corner by a fibre optic guide (7) and a row (8) of fibres be mounted at face 6, these being associated with an equal number of photo-cells at a remote location for digital measurement or with a single photo-cell sensing the total intensity issuing from the fibres of Y. A single fibre or cluster of fibres may be used to determine refractive index changes in a very narrow range and may be associated with a further single fibre to sense the direction of change. In an alternative form of block, Fig. 3 (not shown) face 6 is at an obtuse angle to the interface, for greater sensitivity. Circuit Fig. 5 for a multi-cell battery monitor, has probes for each cell of the battery producing refractive index and temperature indications. Various summing circuits and a comparator are used to produce a temperature compensated measure of mean charge which is indicated and/ or used to control charging.
GB54169/68A 1968-11-14 1968-11-14 Specific gravity and refractive index measurements Expired GB1301082A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB54169/68A GB1301082A (en) 1968-11-14 1968-11-14 Specific gravity and refractive index measurements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB54169/68A GB1301082A (en) 1968-11-14 1968-11-14 Specific gravity and refractive index measurements

Publications (1)

Publication Number Publication Date
GB1301082A true GB1301082A (en) 1972-12-29

Family

ID=10470146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54169/68A Expired GB1301082A (en) 1968-11-14 1968-11-14 Specific gravity and refractive index measurements

Country Status (1)

Country Link
GB (1) GB1301082A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256403A (en) * 1979-03-23 1981-03-17 Simmonds Precision Products, Inc. Combination water contaminant and fuel density detector
FR2578978A1 (en) * 1985-03-12 1986-09-19 Petroles Cie Francaise Method and device for measuring the refractive index of a medium
GB2199404A (en) * 1986-11-19 1988-07-06 Lindley Flow Technology Ltd Refractive index measuring device
WO2009057048A1 (en) * 2007-10-31 2009-05-07 Roelof Mulder Portable power supply system
CN106323810A (en) * 2016-11-14 2017-01-11 宜兴市晶科光学仪器有限公司 Specific gravity refraction tube for urine detection

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256403A (en) * 1979-03-23 1981-03-17 Simmonds Precision Products, Inc. Combination water contaminant and fuel density detector
FR2578978A1 (en) * 1985-03-12 1986-09-19 Petroles Cie Francaise Method and device for measuring the refractive index of a medium
GB2199404A (en) * 1986-11-19 1988-07-06 Lindley Flow Technology Ltd Refractive index measuring device
WO2009057048A1 (en) * 2007-10-31 2009-05-07 Roelof Mulder Portable power supply system
CN106323810A (en) * 2016-11-14 2017-01-11 宜兴市晶科光学仪器有限公司 Specific gravity refraction tube for urine detection

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee