FR2651578A1 - Device for mechanical adjustment of the measurement range of a refractometer - Google Patents

Device for mechanical adjustment of the measurement range of a refractometer Download PDF

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Publication number
FR2651578A1
FR2651578A1 FR8912072A FR8912072A FR2651578A1 FR 2651578 A1 FR2651578 A1 FR 2651578A1 FR 8912072 A FR8912072 A FR 8912072A FR 8912072 A FR8912072 A FR 8912072A FR 2651578 A1 FR2651578 A1 FR 2651578A1
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FR
France
Prior art keywords
barrel
refractometer
free end
prism
mechanical
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.)
Granted
Application number
FR8912072A
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French (fr)
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FR2651578B1 (en
Inventor
Egretier Jean Michel
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to FR8912072A priority Critical patent/FR2651578B1/en
Priority to IT02139590A priority patent/IT1242529B/en
Priority to ES9002331A priority patent/ES2025976A6/en
Publication of FR2651578A1 publication Critical patent/FR2651578A1/en
Application granted granted Critical
Publication of FR2651578B1 publication Critical patent/FR2651578B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01N21/43—Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle

Abstract

The invention relates to devices for mechanical adjustment of the measurement range of refractometers, of the type including a cell (1), a prism (2), an incident-light source (3), a gun (barrel) (5) recovering the reflected rays (4), solidly attached, at one end, to the prism by means of a common support (6) and, opposite, at the other end, called the free end, with a light flux sensor (13). According to the invention, the said device includes a gun (5), made of elastic material, associated with a mechanical component (8) joining the said free end of the gun to the chassis (11) of the refractometer and causing, by adjustment of its length, the displacement, by bending of the body of the gun, of the said end with respect to its elastic rest position.

Description

DISPOSITIF D'AJUSTAGE MECANIQUE DE LA PLAGE DE MESURE
D'UN REFRACTOMETRE
L'invention se rapporte aux dispositifs d'ajustage mécanique de la plage de mesure de réfractomètres du genre comportant une cuve, un prisme, une source lumineuse incidente, un canon, récupérant les rayons réfléchis, solidaire, à une extrémité, du prisme par l'intermèdiaire d'un support commum, et, en regard, à l'autre extrémité, dite extrémité libre, d'un capteur de flux lumineux.MECHANICAL ADJUSTMENT DEVICE OF THE MEASURING RANGE
A REFRACTOMETER
The invention relates to devices for mechanical adjustment of the measuring range of refractometers of the type comprising a tank, a prism, an incident light source, a gun, recovering the reflected rays, secured at one end to the prism by the 'intermediary of a commum support, and, opposite, at the other end, called the free end, of a light flux sensor.

Les dispositifs connus,destinés à régler mécaniquement la plage de mesure d'un réfractomètre, sont du type à modification mécanique de la position du corps du canon de manière à obtenir le zéro dit mécanique. The known devices, intended for mechanically adjusting the measuring range of a refractometer, are of the type with mechanical modification of the position of the barrel body so as to obtain the so-called mechanical zero.

Ils font en règle générale appel à des moyens sophistiqués et onéreux du type à glissières avec cales d'ajustage.They generally use sophisticated and expensive means of the slide type with adjusting shims.

L'invention vise à réaliser un moyen simple et bon marché. Elle concerne à cet effet un dispositif mettant en oeuvre un canon, réalisé en matériau élastique, associé à une pièce mécanique reliant l'extrémité libre dudit canon au chassies du réfractomètre et provoquant, par modification de sa longueur, le déplacement, par flexion du corps du canon,de ladite extrémité par rapport à sa position de repos élastique. The invention aims to provide a simple and inexpensive means. To this end, it relates to a device using a barrel, made of elastic material, associated with a mechanical part connecting the free end of said barrel to the casings of the refractometer and causing, by modification of its length, displacement, by bending of the body of the barrel, of said end relative to its elastic rest position.

Les caractéristiques et les avantages de l'invention vont apparaitre plus clairement à la lecture de la description détaillée qui suit d'un mode de réalisation préféré de 1 invention donné à titre d'exemple seulement et représenté aux dessins annexés. The characteristics and advantages of the invention will appear more clearly on reading the following detailed description of a preferred embodiment of the invention given by way of example only and shown in the accompanying drawings.

Sur ces dessins - la figure 1 est une vue d'ensemble en coupe du dispositif selon l'invention; - la figure 2 est une vue, en coupe AA, de la pièce mécanique de liaison permettant de faire varier la position de l'extrémité libre du canon.In these drawings - Figure 1 is an overall sectional view of the device according to the invention; - Figure 2 is a view, in section AA, of the mechanical connecting part for varying the position of the free end of the barrel.

L'ensemble représenté aux figures comporte - un prisme (2) associé à une cuve (1) par l'intermèdiaire d'un support(6); - une source lumineuse (non représentée), du type infrarouge LED, dont le faisseau incident (3),qui traverse une partie du prisme, rencontre la surface inférieure de la cuve pour se réfléchir partiellement; - un canon (5),récupérant les rayons réflêchis (4), solidaire, à une extrémité, du prisme par l'intermèdiaire du support commum (6), et, en regard, à l'autre extrémité, dite extrémité libre, d'un capteur de flux lumineux (13), du type photoélectrique CCD; ledit canon étant réalisé en matériau élastique lui donnant un caractère rigide mais autorisant, sous l'effet d'une force appropriée, par flexion, un déplacement de son extrémité libre; - un moyen,permettant de faire varier l'extrémité libre du canon, constitué par une pièce de liaison (8) possèdant une ouverture (14) , venant entourer le corps du canon, et un trou fileté (9) dans lequel vient se visser une vis de réglage (10), qui, solidaire en déplacement longitudinal du châssis (11), provoque, lors de sa rotation, le déplacement de l'extrémité libre du canon, par rapport à sa position de repos élastique. The assembly shown in the figures comprises - a prism (2) associated with a tank (1) via a support (6); - a light source (not shown), of the infrared LED type, whose incident beam (3), which passes through part of the prism, meets the lower surface of the tank to partially reflect; - a barrel (5), recovering the reflected rays (4), secured, at one end, to the prism via the commum support (6), and, opposite, at the other end, called the free end, d 'a light flux sensor (13), of the CCD photoelectric type; said barrel being made of elastic material giving it a rigid character but allowing, under the effect of an appropriate force, by bending, a displacement of its free end; - A means for varying the free end of the barrel, consisting of a connecting piece (8) having an opening (14), surrounding the barrel body, and a threaded hole (9) into which is screwed an adjusting screw (10), which, integral in longitudinal displacement of the chassis (11), causes, during its rotation, the displacement of the free end of the barrel, relative to its elastic rest position.

Le canon comporte en outre un épaulement (7) et un circuit imprimé (12) sur lequel est embroché le capteur (13).The barrel also comprises a shoulder (7) and a printed circuit (12) on which the sensor (13) is connected.

Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et représenté pour lequel on pourra prévoir d'autres variantes sans pour cela sortir du cadre de l'invention.  Of course, the invention is not limited to the embodiment described and shown for which we can provide other variants without departing from the scope of the invention.

Claims (2)

REVENDICATIONS 1- Dispositif d'ajustage mécanique de la plage de mesure d'un réfractomètre du genre comportant une cuve (1), un prisme (2), une source lumineuse incidente (3), un canon (5), récupérant les rayons réflêchis (4), solidaire, à une extrémité, du prisme par l'intermèdiaire d'un support commum (6), et, en regard, à l'autre extrémité, dite extrémité libre, d'un capteur de flux lumineux (13), caractérisé en ce qu'il comporte un canon (5), réalisé en matériau élastique, associé à une pièce mécanique (8) reliant l'extrémité libre dudit canon au châssis (11) du réfractomètre et provoquant, par modification de sa longueur, le déplacement, par flexion du corps du canon, de ladite extrémité par rapport à sa position de repos élastique. 1- Device for mechanical adjustment of the measuring range of a refractometer of the type comprising a tank (1), a prism (2), an incident light source (3), a barrel (5), recovering the reflected rays ( 4), secured at one end to the prism by means of a commum support (6), and, opposite, at the other end, called the free end, of a light flux sensor (13), characterized in that it comprises a barrel (5), made of elastic material, associated with a mechanical part (8) connecting the free end of said barrel to the chassis (11) of the refractometer and causing, by modification of its length, the displacement, by bending of the barrel body, of said end relative to its elastic rest position. 2- Dispositif, selon la revendication 1, caractérisé en ce que la pièce mécanique de liaison (8) possède une ouverture (14),venant entourer le corps du canon,et un trou fileté (9) dans lequel vient se visser une vis de réglage (10), qui, solidaire en déplacement longitudinal du chassies (11), provoque, lors de sa rotation, le déplacement de l'extrémité libre du canon.  2- Device according to claim 1, characterized in that the mechanical connecting piece (8) has an opening (14), surrounding the barrel body, and a threaded hole (9) into which is screwed a screw adjustment (10), which, integral in longitudinal displacement of the casings (11), causes, during its rotation, the displacement of the free end of the barrel.
FR8912072A 1989-09-07 1989-09-07 DEVICE FOR MECHANICALLY ADJUSTING THE MEASURING RANGE OF A REFRACTOMETER. Expired - Fee Related FR2651578B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR8912072A FR2651578B1 (en) 1989-09-07 1989-09-07 DEVICE FOR MECHANICALLY ADJUSTING THE MEASURING RANGE OF A REFRACTOMETER.
IT02139590A IT1242529B (en) 1989-09-07 1990-09-06 MECHANICAL ADJUSTMENT DEVICE OF THE MEASUREMENT RANGE OF A REFRACTOMETER
ES9002331A ES2025976A6 (en) 1989-09-07 1990-09-07 Device for mechanical adjustment of the measurement range of a refractometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8912072A FR2651578B1 (en) 1989-09-07 1989-09-07 DEVICE FOR MECHANICALLY ADJUSTING THE MEASURING RANGE OF A REFRACTOMETER.

Publications (2)

Publication Number Publication Date
FR2651578A1 true FR2651578A1 (en) 1991-03-08
FR2651578B1 FR2651578B1 (en) 1994-05-20

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ID=9385490

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8912072A Expired - Fee Related FR2651578B1 (en) 1989-09-07 1989-09-07 DEVICE FOR MECHANICALLY ADJUSTING THE MEASURING RANGE OF A REFRACTOMETER.

Country Status (3)

Country Link
ES (1) ES2025976A6 (en)
FR (1) FR2651578B1 (en)
IT (1) IT1242529B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE702376C (en) * 1938-04-23 1941-02-06 Leitz Ernst Gmbh Adjustment devices for lenses and other optical parts
US3323410A (en) * 1963-10-04 1967-06-06 Waters Associates Inc Critical angle refractometer
DE1961913A1 (en) * 1969-12-05 1971-07-01 Askania Gmbh Fine adjustment device, in particular adjusting device for diaphragms arranged in the beam path of lasers
FR2536537A1 (en) * 1982-11-22 1984-05-25 Alexandre Laugier Method and refractometer for measuring the refractive index of a liquid and application to the measurement of the alcoholic strength of a must

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE702376C (en) * 1938-04-23 1941-02-06 Leitz Ernst Gmbh Adjustment devices for lenses and other optical parts
US3323410A (en) * 1963-10-04 1967-06-06 Waters Associates Inc Critical angle refractometer
DE1961913A1 (en) * 1969-12-05 1971-07-01 Askania Gmbh Fine adjustment device, in particular adjusting device for diaphragms arranged in the beam path of lasers
FR2536537A1 (en) * 1982-11-22 1984-05-25 Alexandre Laugier Method and refractometer for measuring the refractive index of a liquid and application to the measurement of the alcoholic strength of a must

Also Published As

Publication number Publication date
FR2651578B1 (en) 1994-05-20
IT9021395A1 (en) 1992-03-06
IT1242529B (en) 1994-05-16
ES2025976A6 (en) 1992-04-01
IT9021395A0 (en) 1990-09-06

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