FR2484081A1 - Temperature curve corrector for polarimeter instrument - uses profiled cam moved by arm in fluid enabling mirror to deflect correcting beam - Google Patents

Temperature curve corrector for polarimeter instrument - uses profiled cam moved by arm in fluid enabling mirror to deflect correcting beam Download PDF

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Publication number
FR2484081A1
FR2484081A1 FR8012486A FR8012486A FR2484081A1 FR 2484081 A1 FR2484081 A1 FR 2484081A1 FR 8012486 A FR8012486 A FR 8012486A FR 8012486 A FR8012486 A FR 8012486A FR 2484081 A1 FR2484081 A1 FR 2484081A1
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France
Prior art keywords
cam
measured
controlled
temperature
mirror
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Granted
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FR8012486A
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French (fr)
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FR2484081B1 (en
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LEBEUF PHILIPPE
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LEBEUF PHILIPPE
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Priority to FR8012486A priority Critical patent/FR2484081A1/en
Publication of FR2484081A1 publication Critical patent/FR2484081A1/en
Application granted granted Critical
Publication of FR2484081B1 publication Critical patent/FR2484081B1/fr
Granted legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/028—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure
    • 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

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  • Physics & Mathematics (AREA)
  • General 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)
  • Immunology (AREA)
  • Pathology (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

The device provides a progressive temperature correction by using cams which take account of liquid and the temperature characteristics. The device uses an orientable cam (1) whose profile represents a temperature correction curve. This cam (1) turns about an axis (2) representing a normal temperature point. The cam rotation is controlled by a lever arm (3) and by a second cam (4) on a rotating arm (5). This rotating arm is controlled by the fluid detector (6) and a position detector is used to provide values for a measuring system. The profiled cam movements are transferred by a lever arm (7) to a rotating mirror (8) which deviates a light beam by a valve corresponding to the correction to be applied.

Description

La présente invention concerne les instruments du type réfracto- mbtre, polarimètre, saccharimètre et autres permettant de mesurer un liquide et d'en déduire ses caractéristiques. The present invention relates to instruments of the refractometer, polarimeter, saccharimeter and other type for measuring a liquid and deducing its characteristics.

Dans les appareils connus de ce genre, le correction de tempera ture n'est pas continue et progressive ou alors elle empêche une mesure précise ou fait intervenir un système complexe. Elle oblige de plus souvent le système de détection des appareils å revenir vers son origine pour effaçer la mesure précédente. In known devices of this kind, the temperature correction is not continuous and progressive or else it prevents precise measurement or involves a complex system. More often, it forces the device detection system to return to its origin to erase the previous measurement.

Le dispositif objet de l'invention évite tous ces inconvénients. The device which is the subject of the invention avoids all these drawbacks.

La correction de température est progressive en tenant compte des deux paramètres dont elle dépend: La valeur du liquide å mesurer et sa température. La mesure peut être faite d'une manière directe et précise.The temperature correction is progressive taking into account the two parameters on which it depends: The value of the liquid to be measured and its temperature. The measurement can be made in a direct and precise manner.

La majorité.des pièces du dispositif étant en rotation, il peut etre réalisé d'une façon simple et économique. La correction de température est obtenue par trois pièces mobiles dont les mouvements sont solidaires les uns des autres par l'intermédiaire de deux cames qu'elles supportent.The majority of the parts of the device being in rotation, it can be produced in a simple and economical manner. The temperature correction is obtained by three moving parts whose movements are integral with each other by means of two cams which they support.

Les dessins annexés représentent: Figure 1, les courbes de correction de température à appliquer à un fluide déterminé; figure 2, le ai3pOsitif de correction lui-même. The attached drawings represent: FIG. 1, the temperature correction curves to be applied to a determined fluid; Figure 2, the correction ai3pOsitif itself.

Le dispositif objet de l'invention a pour principale particulité de revenir dans la théorie à faire superposer au mieux par rotation autour du point 20ee les courbes de correction de température des fluides à mesurer. The main object of the device of the invention is to return to the theory of having the temperature correction curves of the fluids to be measured superimposed as best as possible by rotation around the point 20ee.

Cela est réalisé dans la pratique par une came orientable 1 dont le profil représente une des courbes. Cette pièce tourne autour d'un axe 2 qui représente le point 20 c, et se déplace latéralement sur un chariot en fonction de la température. La rotation de cette came est commandée, par l'intermédiaire d'un bras de levier 3, par une seconde came 4 solidaire d'une pièce rotative 5 commandée elle même par un dispositif de détection du fluide 6. Les mouvements de la came 1 oriente par l'intermédiaire d'un autre bras de levier 7 un miroir rotatif 8 qui dévie les faisceaux lumineux de l'appareil d'une valeur correspondante à la correction à appliquer en fonction de la température et de la valeur du fluide détecté. La pièce rotative 5 commandée par le dispositif de détection du fluide est munie d'un système de lecture mesurant sa position qui peut être directement traduite en unités à mesurer. This is achieved in practice by an adjustable cam 1, the profile of which represents one of the curves. This part rotates around an axis 2 which represents point 20 c, and moves laterally on a carriage as a function of the temperature. The rotation of this cam is controlled, by means of a lever arm 3, by a second cam 4 secured to a rotating part 5 itself controlled by a fluid detection device 6. The movements of the cam 1 directs by means of another lever arm 7 a rotating mirror 8 which deflects the light beams of the device by a value corresponding to the correction to be applied as a function of the temperature and the value of the detected fluid. The rotating part 5 controlled by the fluid detection device is provided with a reading system measuring its position which can be directly translated into units to be measured.

Le dispositif objet de l'invention peut être utilisé dans toute sorte d'appareils où la détection du fluide s'effectue par déplacement. The device which is the subject of the invention can be used in all kinds of apparatus where the detection of the fluid is carried out by displacement.

Cela peut être le cas notamment de réfractomètres, de polarimètres, de saccharimètre et de tout autre instrument. Des applications particulièrement intéressantes peuvent concerner le mesure des monts de raisin, jus de fruits, Jus de betteraves, confitures, chocolats, essences, alcools, et d'une manière générale tous fluides dont les caractéristiques changent en fonction de la température et de leur propre dosage. This may be the case in particular for refractometers, polarimeters, saccharimeter and any other instrument. Particularly interesting applications can relate to the measurement of the mounts of grapes, fruit juices, beet juice, jams, chocolates, essences, alcohols, and in general all fluids whose characteristics change according to the temperature and their own dosage.

Claims (10)

REVENDICATIONS 1. Dispositif de correction de temprzture pour appareils de mesure des fluides, caractérisé par le fait qu'il revient dans la théorie k superposer au mieux par rotation autour du point 20-c les courbes de correction de température des différents fluides b mesurer. 1. Temperature correction device for devices for measuring fluids, characterized in that it returns in theory k to superimpose at best by rotation around point 20-c the temperature correction curves of the different fluids to be measured. 2. Dispositif selon revendication 1, caractérisé par le fait que la superposition des courbes de correction de température est obtenue à- l'aide d'une came orientable 1 dont le profil représente une de ces tourbes. 2. Device according to claim 1, characterized in that the superposition of the temperature correction curves is obtained using a steerable cam 1 whose profile represents one of these peat. 3. Dispositif selon revendication 2, caractérisé par le fait que la came 1 s'oriente autour d'un axe 2 qui représente le point 20'c.  3. Device according to claim 2, characterized in that the cam 1 is oriented around an axis 2 which represents the point 20'c. 4. Dispositif selon revendication 3, caractérisé par le fait que l'orientation de la came 1 est commandée par une seconde came 4 solidaire d'une pièce rotative 5, elle même commandée par le dispositif de détection 6 de la solution à mesurer. 4. Device according to claim 3, characterized in that the orientation of the cam 1 is controlled by a second cam 4 secured to a rotating part 5, itself controlled by the detection device 6 of the solution to be measured. 5. Dispositif selon revendication 4, caractérisé par le fait que la pièce rotative 5 commandée par le dispositif de détection de la solution à mesurer peut être remplaçé par une pièce mobile dont le mouvement serait rectiligne ou non. 5. Device according to claim 4, characterized in that the rotating part 5 controlled by the device for detecting the solution to be measured can be replaced by a moving part whose movement would be rectilinear or not. 6. Dispositif selon revendication 4, caractérisé par le fait que la pièce rotative 5 commandée par le dispositif de détection de la solution à mesurer peut être munie d'un dispositif de lecture direct ou indirect; par exemple par codage électronique ou électrique, par comptage d'impulsions, par mesure directe ou comparative de tension électrique. 6. Device according to claim 4, characterized in that the rotary part 5 controlled by the device for detecting the solution to be measured can be provided with a direct or indirect reading device; for example by electronic or electrical coding, by pulse counting, by direct or comparative measurement of electrical voltage. 7. Dispositif selon revendication 2, caractérisé par le fait que la première came 1 se déplace latéralement en fonction de la température du fluide à mesurer. 7. Device according to claim 2, characterized in that the first cam 1 moves laterally as a function of the temperature of the fluid to be measured. 8. Dispositif selon revendication 7, caractérisé par le fait que le déplacement latéral de la première came 1 peut entre remplaçé par un déplacement angulaire ou par une combinaison des deux. 8. Device according to claim 7, characterized in that the lateral displacement of the first cam 1 can between replaced by an angular displacement or by a combination of the two. 9. Dispositif selon revendication 2, caractérisé par le fait que les mouvements de la première came 1 entrain la rotation d'un miroir 8 qui dévie le faisceau lumineux de l'appareil d'une valeur correspondante à la correction à appliquer en fonction de la température. 9. Device according to claim 2, characterized in that the movements of the first cam 1 causes the rotation of a mirror 8 which deflects the light beam of the device by a value corresponding to the correction to be applied according to the temperature. 10. Dispositif selon revendication 9, caractérisé par le fait que le miroir 8 peut être remplaçé par un autre élément optique ou non lame parrallèle, prisme, qui donnerait un effet identique à celui du miroir.  10. Device according to claim 9, characterized in that the mirror 8 can be replaced by another optical element or not parallel blade, prism, which would give an effect identical to that of the mirror.
FR8012486A 1980-06-05 1980-06-05 Temperature curve corrector for polarimeter instrument - uses profiled cam moved by arm in fluid enabling mirror to deflect correcting beam Granted FR2484081A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8012486A FR2484081A1 (en) 1980-06-05 1980-06-05 Temperature curve corrector for polarimeter instrument - uses profiled cam moved by arm in fluid enabling mirror to deflect correcting beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8012486A FR2484081A1 (en) 1980-06-05 1980-06-05 Temperature curve corrector for polarimeter instrument - uses profiled cam moved by arm in fluid enabling mirror to deflect correcting beam

Publications (2)

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FR2484081A1 true FR2484081A1 (en) 1981-12-11
FR2484081B1 FR2484081B1 (en) 1985-01-25

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2386103A1 (en) * 1977-03-30 1978-10-27 United Gas Industries Ltd TEMPERATURE COMPENSATOR DEVICE

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2386103A1 (en) * 1977-03-30 1978-10-27 United Gas Industries Ltd TEMPERATURE COMPENSATOR DEVICE

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FR2484081B1 (en) 1985-01-25

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