JPS5637538A - Sludge settling meter - Google Patents
Sludge settling meterInfo
- 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
Links
- 239000010802 sludge Substances 0.000 title 1
- 230000004907 flux Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
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.
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)
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 |
-
1979
- 1979-09-05 JP JP11283879A patent/JPS5637538A/en active Pending
Cited By (3)
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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