JPS5637538A - Sludge settling meter - Google Patents

Sludge settling meter

Info

Publication number
JPS5637538A
JPS5637538A JP11283879A JP11283879A JPS5637538A JP S5637538 A JPS5637538 A JP S5637538A JP 11283879 A JP11283879 A JP 11283879A JP 11283879 A JP11283879 A JP 11283879A JP S5637538 A JPS5637538 A JP S5637538A
Authority
JP
Japan
Prior art keywords
light sources
light
photodetector
alphan
alpha1
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.)
Pending
Application number
JP11283879A
Other languages
Japanese (ja)
Inventor
Seiji Yamaguchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11283879A priority Critical patent/JPS5637538A/en
Publication of JPS5637538A publication Critical patent/JPS5637538A/en
Pending legal-status Critical Current

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth 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

PURPOSE:To make measurement accurate by providing the compensating means which compensates that the quantity of the light received in a photodetector is less with the light sources opposing to the positions nearer to the top end of the photodetectors from the directivity of the light sources and the height position relations between the light sources and the photodetector. CONSTITUTION:The gain of an amplifier 13 when it receives the light from the light sources positioned on the lower side than the upper limit position C0 where the liminous fluxes emitted from the light sources 8 enter a photodetector 9 completely up to their circumferential edge is defined as alpha0, and the gains of the amplifier 13 when it receives the light from the light sources positioned upper than the position C0 are defined as alpha1, alpha2...alphan successively upward from the case of the light source close to the position C0. The gains of the amplifier 13 are so controlled by a control circuit 11 that the gains alpha1, alpha2...alphan become alpha0<alpha1<alpha2...alphan in inverse proportion on the photodetecting area of the photodetector 9 in respective cases.
JP11283879A 1979-09-05 1979-09-05 Sludge settling meter Pending JPS5637538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11283879A JPS5637538A (en) 1979-09-05 1979-09-05 Sludge settling meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11283879A JPS5637538A (en) 1979-09-05 1979-09-05 Sludge settling meter

Publications (1)

Publication Number Publication Date
JPS5637538A true JPS5637538A (en) 1981-04-11

Family

ID=14596789

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11283879A Pending JPS5637538A (en) 1979-09-05 1979-09-05 Sludge settling meter

Country Status (1)

Country Link
JP (1) JPS5637538A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6117141A (en) * 1984-07-04 1986-01-25 Agency Of Ind Science & Technol Photosensitive resin composition for screen plate making
JPS61206853U (en) * 1985-06-17 1986-12-27
US5686676A (en) * 1996-05-07 1997-11-11 Brush Wellman Inc. Process for making improved copper/tungsten composites

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6117141A (en) * 1984-07-04 1986-01-25 Agency Of Ind Science & Technol Photosensitive resin composition for screen plate making
JPS61206853U (en) * 1985-06-17 1986-12-27
US5686676A (en) * 1996-05-07 1997-11-11 Brush Wellman Inc. Process for making improved copper/tungsten composites

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