FR2274894A1 - Appareil de mesure de faibles ecarts, notamment par refractometrie - Google Patents

Appareil de mesure de faibles ecarts, notamment par refractometrie

Info

Publication number
FR2274894A1
FR2274894A1 FR7420285A FR7420285A FR2274894A1 FR 2274894 A1 FR2274894 A1 FR 2274894A1 FR 7420285 A FR7420285 A FR 7420285A FR 7420285 A FR7420285 A FR 7420285A FR 2274894 A1 FR2274894 A1 FR 2274894A1
Authority
FR
France
Prior art keywords
refractometry
measurement device
deviation measurement
low deviation
low
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
FR7420285A
Other languages
English (en)
Other versions
FR2274894B1 (fr
Inventor
Helenio Llop
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.)
Societe dOptique Precision Electronique et Mecanique SOPELEM SA
Original Assignee
Societe dOptique Precision Electronique et Mecanique SOPELEM SA
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 Societe dOptique Precision Electronique et Mecanique SOPELEM SA filed Critical Societe dOptique Precision Electronique et Mecanique SOPELEM SA
Priority to FR7420285A priority Critical patent/FR2274894A1/fr
Priority to IT68383/75A priority patent/IT1036122B/it
Priority to GB23663/75A priority patent/GB1514236A/en
Priority to NL7506508A priority patent/NL7506508A/xx
Priority to US05/584,496 priority patent/US3983390A/en
Priority to DE2526110A priority patent/DE2526110C3/de
Priority to CH756775A priority patent/CH592866A5/xx
Priority to BE157295A priority patent/BE830188A/fr
Publication of FR2274894A1 publication Critical patent/FR2274894A1/fr
Application granted granted Critical
Publication of FR2274894B1 publication Critical patent/FR2274894B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
    • G01D5/34776—Absolute encoders with analogue or digital scales
    • G01D5/34792—Absolute encoders with analogue or digital scales with only digital scales or both digital and incremental scales
    • 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

Landscapes

  • 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)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
FR7420285A 1974-06-12 1974-06-12 Appareil de mesure de faibles ecarts, notamment par refractometrie Granted FR2274894A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR7420285A FR2274894A1 (fr) 1974-06-12 1974-06-12 Appareil de mesure de faibles ecarts, notamment par refractometrie
IT68383/75A IT1036122B (it) 1974-06-12 1975-05-28 Apparecchio di misura di piccoli scarti particolarmente refratto metro
GB23663/75A GB1514236A (en) 1974-06-12 1975-05-30 Instrument for measuring small deviations
NL7506508A NL7506508A (nl) 1974-06-12 1975-06-02 Optische inrichting voor het meten van kleine ver- schillen.
US05/584,496 US3983390A (en) 1974-06-12 1975-06-06 Device for measuring angular deviation of a light beam by use of gratings
DE2526110A DE2526110C3 (de) 1974-06-12 1975-06-11 Vorrichtung zum Messen kleiner Auslenkungen eines Lichtbündels
CH756775A CH592866A5 (fr) 1974-06-12 1975-06-11
BE157295A BE830188A (fr) 1974-06-12 1975-06-12 Appareil de mesure de faibles ecarts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7420285A FR2274894A1 (fr) 1974-06-12 1974-06-12 Appareil de mesure de faibles ecarts, notamment par refractometrie

Publications (2)

Publication Number Publication Date
FR2274894A1 true FR2274894A1 (fr) 1976-01-09
FR2274894B1 FR2274894B1 (fr) 1977-12-16

Family

ID=9139937

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7420285A Granted FR2274894A1 (fr) 1974-06-12 1974-06-12 Appareil de mesure de faibles ecarts, notamment par refractometrie

Country Status (8)

Country Link
US (1) US3983390A (fr)
BE (1) BE830188A (fr)
CH (1) CH592866A5 (fr)
DE (1) DE2526110C3 (fr)
FR (1) FR2274894A1 (fr)
GB (1) GB1514236A (fr)
IT (1) IT1036122B (fr)
NL (1) NL7506508A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4078173A (en) * 1976-06-24 1978-03-07 Pertec Computer Corporation Light amplitude control system for position and motion transducers
DE3045156C2 (de) * 1980-12-01 1983-12-08 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Vorrichtung zur Spektralanalyse
US4668093A (en) * 1983-06-13 1987-05-26 Mcdonnell Douglas Corporation Optical grating demodulator and sensor system
GB2210525B (en) * 1987-09-30 1991-11-20 Okuma Machinery Works Ltd Optical encoder
JP2539269B2 (ja) * 1989-07-17 1996-10-02 オークマ株式会社 光学式エンコ―ダ
JP4006355B2 (ja) * 2003-04-28 2007-11-14 アルプス電気株式会社 濃度測定ユニット並びにこの濃度測定ユニットを備えた燃料電池
US8852535B2 (en) * 2003-10-03 2014-10-07 Saudi Arabian Oil Company Device and method for measuring elemental sulfur in gas in gas lines
EP2745093B1 (fr) * 2011-08-16 2021-12-15 Waters Technologies Corporation Cellules d'écoulement pour détection différentielle par indice de réfraction

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1208087B (de) * 1964-04-22 1965-12-30 Wenczler & Heidenhain Einrichtung zum Messen von Laengen mittels Impulszaehlung
US3451054A (en) * 1965-03-18 1969-06-17 Gen Electric Light optic digital transducer using displaced ronchi rulings
DE1282988B (de) * 1965-05-28 1968-11-14 Zeiss Carl Fa Einrichtung zum Messen von Lageaenderungen zweier zueinander beweglicher Teile unterVerwendung einer inkohaerenten Strahlung
US3426211A (en) * 1965-10-21 1969-02-04 Honeywell Inc Refractometers
DE1966918U (de) * 1967-06-15 1967-08-24 Bodenseewerk Perkin Elmer Co Differentialrefraktometer.
DE1921507C2 (de) * 1969-04-26 1971-02-11 Zeiss Carl Fa Einrichtung zur Erzeugung phasenverschobener elektrischer Signale
US3728715A (en) * 1970-04-20 1973-04-17 Bendix Corp Digital sun sensor having sub-image resolution

Also Published As

Publication number Publication date
FR2274894B1 (fr) 1977-12-16
CH592866A5 (fr) 1977-11-15
DE2526110C3 (de) 1982-04-08
NL7506508A (nl) 1975-12-16
US3983390A (en) 1976-09-28
IT1036122B (it) 1979-10-30
BE830188A (fr) 1975-12-12
DE2526110A1 (de) 1976-01-02
GB1514236A (en) 1978-06-14
DE2526110B2 (de) 1981-07-16

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Legal Events

Date Code Title Description
ST Notification of lapse