JPS57132040A - Method for optical measurement of sludge concentration - Google Patents

Method for optical measurement of sludge concentration

Info

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
Application number
JP1824981A
Other languages
Japanese (ja)
Other versions
JPS6230585B2 (en
Inventor
Akira Kumada
Kenichi Amano
Shotaro Urushibara
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.)
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Corp
Meidensha Electric Manufacturing 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 Meidensha Corp, Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Corp
Priority to JP1824981A priority Critical patent/JPS57132040A/en
Publication of JPS57132040A publication Critical patent/JPS57132040A/en
Publication of JPS6230585B2 publication Critical patent/JPS6230585B2/ja
Granted 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
    • G01N21/47—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.
JP1824981A 1981-02-10 1981-02-10 Method for optical measurement of sludge concentration Granted JPS57132040A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5345588A (en) * 1976-10-06 1978-04-24 Meidensha Electric Mfg Co Ltd Sludge densitometer

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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