DE2713775A1 - Automatic continuous measurement of fluid ternary mixt. concentrations - using refractometer(s) with two different wavelengths and followed by evaluation - Google Patents

Automatic continuous measurement of fluid ternary mixt. concentrations - using refractometer(s) with two different wavelengths and followed by evaluation

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Publication number
DE2713775A1
DE2713775A1 DE19772713775 DE2713775A DE2713775A1 DE 2713775 A1 DE2713775 A1 DE 2713775A1 DE 19772713775 DE19772713775 DE 19772713775 DE 2713775 A DE2713775 A DE 2713775A DE 2713775 A1 DE2713775 A1 DE 2713775A1
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DE
Germany
Prior art keywords
refractometer
different wavelengths
automatic continuous
concentrations
continuous measurement
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.)
Withdrawn
Application number
DE19772713775
Other languages
German (de)
Inventor
Peter Weinreich
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.)
Steuma Fuchs & Cie KG
Original Assignee
Steuma Fuchs & Cie KG
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 Steuma Fuchs & Cie KG filed Critical Steuma Fuchs & Cie KG
Priority to DE19772713775 priority Critical patent/DE2713775A1/en
Publication of DE2713775A1 publication Critical patent/DE2713775A1/en
Withdrawn legal-status Critical Current

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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

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  • 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 Analysing Materials By Optical Means (AREA)

Abstract

The method is for automatic continuous measurement of three different fluids, e.g. a ternary mixture, and uses a refractometer with two different wavelengths. It is developed from the simple measurement method used for binary mixtures and employs two different wavelengths of light, a mathematical model, and derivation of the concentrations in a computer. One or two refractometers are operated with light of two wavelengths, e.g. 0.45 and 0.65 micrometers, to which the components exhibit different refractive indices. Current methods involve positive identification or summed identification and individual component subtraction.

Description

Verfahren zur automatischen koiitinuierlichen Messung von drei verschiedenen F1Bigkeiten, d.h. Dreistoffgemischen mittels Refraktometer bei 2 verschiedenen Wellenlängen.Process for the automatic continuous measurement of three different F1 liquids, i.e. three-component mixtures using a refractometer at 2 different wavelengths.

Beschreibung und PatentansprcK C 1s Die Erfindung betrifft ein Verfahren, das die Bestimmung der Konzentration von 3 verschiedenen Stoffen erlaubt, die als Gemisch vorliegen, nach dem Durchgang durch ein oder zwei messende Refraktometer, die mit Licht zweier, voneinander verschiedenen Wellenzahlen hetrieben werden (z.B. mit Licht der Wellenlängen x 450 und 650 nanometer). Mit diesem Verfahren soll eine laufende Analyse von Dreistoffgemischen ermöglicht werden, die bei vielen Prozessen, z.B. in der Lebensmitteltechnologie eine Prozesskontrolle verbessert oder überhaupt erst möglich macht, und damit zur Produktverbesserung oder zu einer besseren Einhaltung von vorgegebenen Produktspezifikationen beiträgt.Description and Claim C 1s The invention relates to a method that allows the determination of the concentration of 3 different substances, which are present as a mixture, after passing through one or two measuring refractometers, which are driven with light of two different wave numbers (e.g. with light of wavelengths x 450 and 650 nanometers). This method is intended to enable an ongoing analysis of ternary mixtures, which improves process control in many processes, e.g. in food technology, or makes it possible in the first place, and thus contributes to product improvement or better compliance with given product specifications.

Der Stand der Technik ist der, daß Dreistoffgemische nur über positividentifizierende Messverfahren bestimnibar sind bzw. über die Summenbestimmung zweier Komponenten und Subtraktion einer positivdentifizierter Komponente neben der Positivdentifizierung der dritten Komponente.The state of the art is that ternary mixtures only have positive identifying factors Measurement methods are determinable or by determining the sum of two components and subtracting a positively identified component from the positive identification the third component.

Der Erfindung liegt die Aufgabe zugrunde, die für binäre üblichen einfachen physikalischen Messverfahren wie z.B. die Refraktometrie, auf ternäre Gemische auszudehnen. Dies ist möglich durch die Verwendung der Refraktometrie bei zwei verschiedenen Wellenlängen und der Anwendung eines mathematisch-geometrischen Modells, das mit Hilfe eines angeschlossenen Rechners die Errechnung der Konzentration der drei Komponenten des Gemisches erlaubt.The invention is based on the object that is usual for binary simple physical measuring methods such as refractometry, on ternary To expand mixtures. This is possible through the use of refractometry at two different wavelengths and the application of a mathematical-geometric Model that calculates the concentration with the help of a connected computer of the three components of the mixture allowed.

Claims (1)

Patentanspruch:Claim: Verfahren zur automatischen kontinuierlichen Messung von 3 verschiedenen Flüßigkeiten d.h. nreistoffgemischen mittels Refraktometer bei 2 verschiedenen Wellenlängen. Das Verfahren ist dadurch gekennzeichnet, daß mittels eines oder zweier Refraktometer, die mit Licht verschiedener Wellenzahl, z.B. Licht der Wellenlängen 0,450 mikrometer und 0.650 mirkometer, betrieben werden, die einzelnen Stoffe unterschiedliche Brechzahidifferenzen aufweisen. Mittels eines angeschlossenen Rechners kann jeder einzelne Stoff ermittelt und ausgegeben werden.Process for the automatic continuous measurement of 3 different Liquids i.e. mixtures of substances using a refractometer at 2 different wavelengths. The method is characterized in that by means of one or two refractometers, those with light of different wave numbers, e.g. light with a wavelength of 0.450 micrometers and 0.650 micrometers, the individual substances have different refractive index differences exhibit. Each individual substance can be determined using a connected computer and output.
DE19772713775 1977-03-29 1977-03-29 Automatic continuous measurement of fluid ternary mixt. concentrations - using refractometer(s) with two different wavelengths and followed by evaluation Withdrawn DE2713775A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772713775 DE2713775A1 (en) 1977-03-29 1977-03-29 Automatic continuous measurement of fluid ternary mixt. concentrations - using refractometer(s) with two different wavelengths and followed by evaluation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772713775 DE2713775A1 (en) 1977-03-29 1977-03-29 Automatic continuous measurement of fluid ternary mixt. concentrations - using refractometer(s) with two different wavelengths and followed by evaluation

Publications (1)

Publication Number Publication Date
DE2713775A1 true DE2713775A1 (en) 1978-10-12

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DE19772713775 Withdrawn DE2713775A1 (en) 1977-03-29 1977-03-29 Automatic continuous measurement of fluid ternary mixt. concentrations - using refractometer(s) with two different wavelengths and followed by evaluation

Country Status (1)

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DE (1) DE2713775A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487010A1 (en) * 1980-07-15 1982-01-22 Tno FUEL SUPPLY SYSTEM FOR COMBUSTION ENGINES
DE3828325A1 (en) * 1988-08-20 1990-02-22 Miller Johannisberg Druckmasch METHOD FOR MEASURING THE ALCOHOL CONTENT OF THE MOISTURE LIQUID FOR ALCOHOL HUMIDIFIERS OF OFFSET PRINTING MACHINES

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487010A1 (en) * 1980-07-15 1982-01-22 Tno FUEL SUPPLY SYSTEM FOR COMBUSTION ENGINES
US4438749A (en) * 1980-07-15 1984-03-27 Nederlandse Centrale Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Fuel supply system for combustion engines
DE3828325A1 (en) * 1988-08-20 1990-02-22 Miller Johannisberg Druckmasch METHOD FOR MEASURING THE ALCOHOL CONTENT OF THE MOISTURE LIQUID FOR ALCOHOL HUMIDIFIERS OF OFFSET PRINTING MACHINES

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