JPS57132040A - Method for optical measurement of sludge concentration - Google Patents
Method for optical measurement of sludge concentrationInfo
- Publication number
- JPS57132040A JPS57132040A JP1824981A JP1824981A JPS57132040A JP S57132040 A JPS57132040 A JP S57132040A JP 1824981 A JP1824981 A JP 1824981A JP 1824981 A JP1824981 A JP 1824981A JP S57132040 A JPS57132040 A JP S57132040A
- Authority
- JP
- Japan
- Prior art keywords
- photodetector
- photodetectors
- sludge
- concn
- output
- 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
Links
- 239000010802 sludge Substances 0.000 title abstract 4
- 238000005259 measurement Methods 0.000 title abstract 3
- 230000003287 optical effect Effects 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 1
- 239000003086 colorant Substances 0.000 abstract 2
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
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
- G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
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
PURPOSE:To calculate the concn. M which is unaffected by sludge colors from the ratio of the square value of the output of a photodetector for measurement and the outputs of photodetectors for correction by providing at least one photodetector for correction near the photodetectors for measurement, separately from the photodetector. CONSTITUTION:As optical detector 6 for sludge concns. provided with one light source 7, one photodetector element 8 for measuring scattered light and two photodetectors 9, 10 is used. In this case, the two elements 9, 10 are installed near the element 8. If the output of the photodetector 8 defined as N and the output of the photodetector 9 (or 10) as F, an MLSS concn. M is calculated by M=K'(N<2>/F), and if the position relations of the photodetectors 8, 9 are suitably designed, the concn. M unaffected by sludge colors is calculated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1824981A JPS57132040A (en) | 1981-02-10 | 1981-02-10 | Method for optical measurement of sludge concentration |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1824981A JPS57132040A (en) | 1981-02-10 | 1981-02-10 | Method for optical measurement of sludge concentration |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57132040A true JPS57132040A (en) | 1982-08-16 |
JPS6230585B2 JPS6230585B2 (en) | 1987-07-03 |
Family
ID=11966400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1824981A Granted JPS57132040A (en) | 1981-02-10 | 1981-02-10 | Method for optical measurement of sludge concentration |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57132040A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6019955U (en) * | 1983-07-19 | 1985-02-12 | 海上電機株式会社 | Photoelectric concentration meter |
JPH01165936A (en) * | 1987-12-22 | 1989-06-29 | Meidensha Corp | Detecting apparatus of concentration of suspended substance |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5345588A (en) * | 1976-10-06 | 1978-04-24 | Meidensha Electric Mfg Co Ltd | Sludge densitometer |
-
1981
- 1981-02-10 JP JP1824981A patent/JPS57132040A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5345588A (en) * | 1976-10-06 | 1978-04-24 | Meidensha Electric Mfg Co Ltd | Sludge densitometer |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6019955U (en) * | 1983-07-19 | 1985-02-12 | 海上電機株式会社 | Photoelectric concentration meter |
JPH01165936A (en) * | 1987-12-22 | 1989-06-29 | Meidensha Corp | Detecting apparatus of concentration of suspended substance |
Also Published As
Publication number | Publication date |
---|---|
JPS6230585B2 (en) | 1987-07-03 |
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