GB1308870A - Apparatus for producing an electrical signal related to the con centration of a solution - Google Patents

Apparatus for producing an electrical signal related to the con centration of a solution

Info

Publication number
GB1308870A
GB1308870A GB2945471A GB2945471A GB1308870A GB 1308870 A GB1308870 A GB 1308870A GB 2945471 A GB2945471 A GB 2945471A GB 2945471 A GB2945471 A GB 2945471A GB 1308870 A GB1308870 A GB 1308870A
Authority
GB
United Kingdom
Prior art keywords
cells
photo
solution
signal related
june
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
GB2945471A
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
Publication of GB1308870A publication Critical patent/GB1308870A/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

Landscapes

  • 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

1308870 Refractometer SOC D'OPTIQUE PRECISION ELECTRONIQUE ET MECANIQUE 23 June 1971 [23 June 1970] 29454/71 Heading G1A An apparatus for indicating that a desired concentration of a solution 1, Fig.1, has been reached comprises means for directing light from a source 8 inclinedly upon an internal plane surface 6 of a prism 5, a pair of photo-cells 14, 15, means for directing the light internally reflected by surface 6 towards the photo-cells, means for deriving a signal related to the difference in illumination of the two cells which are spaced in the direction in which the boundary formed by the limit of the totally reflected light moves and the photo-cells are adjustably mounted on a track against a scale, so that the area closely monitored can be pre-set. The apparatus is described with reference to monitoring sugar concentration during jam making.
GB2945471A 1970-06-23 1971-06-23 Apparatus for producing an electrical signal related to the con centration of a solution Expired GB1308870A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7023157A FR2094486A5 (en) 1970-06-23 1970-06-23

Publications (1)

Publication Number Publication Date
GB1308870A true GB1308870A (en) 1973-03-07

Family

ID=9057639

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2945471A Expired GB1308870A (en) 1970-06-23 1971-06-23 Apparatus for producing an electrical signal related to the con centration of a solution

Country Status (5)

Country Link
DE (1) DE2120421C3 (en)
ES (1) ES389797A1 (en)
FR (1) FR2094486A5 (en)
GB (1) GB1308870A (en)
NL (1) NL170332C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500930B1 (en) * 1980-11-14 1985-12-06 Sopelem REFRACTOMETER USING THE LIMIT ANGLE METHOD
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
DE2120421A1 (en) 1971-12-30
NL7105765A (en) 1971-12-27
NL170332B (en) 1982-05-17
DE2120421C3 (en) 1974-03-28
FR2094486A5 (en) 1972-02-04
NL170332C (en) 1982-10-18
ES389797A1 (en) 1973-06-01
DE2120421B2 (en) 1973-08-16

Similar Documents

Publication Publication Date Title
BE810176A (en) SYSTEM FOR DETERMINING THE NATURE OF THE OPTICAL DEFORMATION OF GLASS
IE38495B1 (en) Method and apparatus for determining the optical quality of transparent or reflective material
ES387036A1 (en) Nondestructive method for measuring states of surface and apparatus for carrying out said method
GB1461141A (en) Method for inspecting flaws of material
IT1040362B (en) AUTOMATIC PROCEDURE FOR OPTIMUM ADJUSTMENT OF FUEL CONSUMPTION IN AN AIRCRAFT
GB1308870A (en) Apparatus for producing an electrical signal related to the con centration of a solution
GB1322087A (en) Spectrum analysis systems using optical correlation techniques particularly useful in pulse modulated doppler radar systems
BE797045A (en) METHOD AND DEVICE FOR THE PRODUCTION OF GLASS FIBERS BY CENTRIFUGATION
US3751168A (en) Indicating apparatus for the varying concentration of a solution
GB1451990A (en) Apparatus producing an electrical signal related to the concentration of a solution
GB1514236A (en) Instrument for measuring small deviations
CH551616A (en) METHOD AND DEVICE FOR ADJUSTING THE MEASURING PRESSURE OF A MECHANICAL PROBE OF AN ELECTRONIC MICRO-INDICATOR.
JPS51136478A (en) Defect inspection device
GB1319070A (en) Apparatus for sensing a change in light intensity
GB1408414A (en) Device for measuring the displacement of a measuring point along at least two coordinate directions
JPS5317376A (en) Measuring method for speed of running object
ES413703A1 (en) Procedure for the optical control of the floated glass. (Machine-translation by Google Translate, not legally binding)
GB1366944A (en) Method and apparatus for testing light-transmitting material
ES406936A1 (en) Method and apparatus for measuring optical irregularities in an article
GB1429290A (en) Scanning
JPS5249083A (en) Device for detecting surface defects of one dimensionally continuous o bjects to be examined
GB1086285A (en) Apparatus for measuring traces of oil in liquids
JPS56130606A (en) Optical measuring device for thickness of transparent material
JPS5240175A (en) Laser doppler current meter
JPS53120552A (en) Evaluation method of plating surface

Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee