SE9203834D0 - PROCEDURE AND DEVICE TO DETERMINE THE LEVEL OF GASCULAR OR SCIENTIFIC MEDIA IN PIPES - Google Patents

PROCEDURE AND DEVICE TO DETERMINE THE LEVEL OF GASCULAR OR SCIENTIFIC MEDIA IN PIPES

Info

Publication number
SE9203834D0
SE9203834D0 SE9203834A SE9203834A SE9203834D0 SE 9203834 D0 SE9203834 D0 SE 9203834D0 SE 9203834 A SE9203834 A SE 9203834A SE 9203834 A SE9203834 A SE 9203834A SE 9203834 D0 SE9203834 D0 SE 9203834D0
Authority
SE
Sweden
Prior art keywords
tube
different
detector
media
level
Prior art date
Application number
SE9203834A
Other languages
Swedish (sv)
Other versions
SE9203834L (en
Inventor
J Lundberg
T Nilson
T Silander
Original Assignee
Tesi Ab
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 Tesi Ab filed Critical Tesi Ab
Priority to SE9203834A priority Critical patent/SE9203834L/en
Publication of SE9203834D0 publication Critical patent/SE9203834D0/en
Priority to PCT/SE1993/001087 priority patent/WO1994015181A1/en
Publication of SE9203834L publication Critical patent/SE9203834L/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/04—Investigating sedimentation of particle suspensions
    • G01N15/05—Investigating sedimentation of particle suspensions in blood
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Dispersion Chemistry (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Abstract

The present invention relates to a method for determining the level of gaseous or liquid media that have different optical reflec tion properties and are contained in a tube. According to the invention, a generally horizontal laser beam is caused to impinge on the tube at an angle such that no directly reflected light will impinge on the laser. The intensity of the light reflected from the tube is measured by at least one detector and the laser beam and the detector or detectors are moved vertically along the height of the tube. The measurement values obtained from the detector or detectors are recorded during movement of the laser, and the levels of the media contained in the tube are calculated on the basis of the recorded measurement values, these values being different for different media due to the different reflective properties thereof. The method can be applied with particular advantage to determine the sedimentation rate of blood. The invention also relates to a device for carrying out the method.
SE9203834A 1992-12-18 1992-12-18 Method and apparatus for determining the level of gaseous or liquid media in tubes SE9203834L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9203834A SE9203834L (en) 1992-12-18 1992-12-18 Method and apparatus for determining the level of gaseous or liquid media in tubes
PCT/SE1993/001087 WO1994015181A1 (en) 1992-12-18 1993-12-17 A method and device for determining the level of gaseous or liqu id media in tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9203834A SE9203834L (en) 1992-12-18 1992-12-18 Method and apparatus for determining the level of gaseous or liquid media in tubes

Publications (2)

Publication Number Publication Date
SE9203834D0 true SE9203834D0 (en) 1992-12-18
SE9203834L SE9203834L (en) 1994-06-19

Family

ID=20388180

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9203834A SE9203834L (en) 1992-12-18 1992-12-18 Method and apparatus for determining the level of gaseous or liquid media in tubes

Country Status (2)

Country Link
SE (1) SE9203834L (en)
WO (1) WO1994015181A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19605232C2 (en) * 1996-02-13 1999-12-30 Zubler Geraetebau Device and method for automatically determining blood sedimentation
US6448574B1 (en) * 2000-03-14 2002-09-10 Dade Behring Inc. Method and apparatus for determining liquid levels in a liquid sample container
TWI609768B (en) * 2013-12-13 2018-01-01 Xyzprinting, Inc. Three dimensional printing apparatus
CN105973153B (en) * 2016-06-16 2018-08-17 浙江万克新能源科技有限公司 A kind of cylindrical cell detection platform
EP4092394B1 (en) 2021-05-19 2024-06-26 Roche Diagnostics GmbH Apparatus for determining a vertical position of at least one interface between a first component and at least one second component
EP4137784A1 (en) * 2021-08-18 2023-02-22 Roche Diagnostics GmbH Laboratory system and method for determining a piece of information

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1119532B (en) * 1958-05-30 1961-12-14 Helmut Schulz Method and device for level measurement in glass tubes using a photo cell
SE348837B (en) * 1970-07-13 1972-09-11 Sjuco Ab
FR2413661A1 (en) * 1977-12-30 1979-07-27 Nancy 1 Universite Measurement of sedimentation rate of erythrocytes - uses blood sample in clear vertical tube with IR source and detector sensing clarity of sample
DE3609552C1 (en) * 1986-03-21 1987-08-20 Hans-Juergen Fahl Device for the automatic determination of a sedimentation in blood
US4848900A (en) * 1987-06-22 1989-07-18 Kuo Cheng Deng Computerized automatic monitoring and recording system of erythrocyte sedimentation process
US5328822A (en) * 1990-04-23 1994-07-12 Solid State Farms, Inc. Apparatus and method for sedimentation based blood analysis

Also Published As

Publication number Publication date
WO1994015181A1 (en) 1994-07-07
SE9203834L (en) 1994-06-19

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