JPS57101743A - Optical concentration meter - Google Patents

Optical concentration meter

Info

Publication number
JPS57101743A
JPS57101743A JP17919280A JP17919280A JPS57101743A JP S57101743 A JPS57101743 A JP S57101743A JP 17919280 A JP17919280 A JP 17919280A JP 17919280 A JP17919280 A JP 17919280A JP S57101743 A JPS57101743 A JP S57101743A
Authority
JP
Japan
Prior art keywords
output
light receiving
scattered
transmitted light
amplifier
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
JP17919280A
Other languages
Japanese (ja)
Inventor
Takahei Kuwata
Kazuo Takashima
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP17919280A priority Critical patent/JPS57101743A/en
Publication of JPS57101743A publication Critical patent/JPS57101743A/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
    • 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
    • G01N21/532—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke with measurement of scattering and transmission

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 obtain a linear output with respect to the concentration without a dividing device, by adjusting gain so that the transmitted light output becomes constant, and amplifying the scattered light output by the same gain. CONSTITUTION:The parallel light beams from a power source lamp 2 which is positioned at a focal point of a convex lens 3 are absorbed and scattered by dirt particles and the like in liquid to be measured 1 and detected by a transmitted light receiving cell 4 and scattered light receiving cells 5. The automatic gain control device (AGC) 10 automatically adjusts a variable resistor 91 of an amplifier 71 so that the output from the transmitted light receiving cell 4 is always kept constant. The AGC10 also concurrently adjusts a variable resistor 92 of an amplifier 72 so that the gains of the amplifiers 71 and 72 become the same. Thereafter the scattered light output 60 becomes a signal proportional to the turbidity concentration. Since the dividing device can be omitted, the device is inexpensive, and the errors due to division can be eliminated.
JP17919280A 1980-12-17 1980-12-17 Optical concentration meter Pending JPS57101743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17919280A JPS57101743A (en) 1980-12-17 1980-12-17 Optical concentration meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17919280A JPS57101743A (en) 1980-12-17 1980-12-17 Optical concentration meter

Publications (1)

Publication Number Publication Date
JPS57101743A true JPS57101743A (en) 1982-06-24

Family

ID=16061538

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17919280A Pending JPS57101743A (en) 1980-12-17 1980-12-17 Optical concentration meter

Country Status (1)

Country Link
JP (1) JPS57101743A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999030132A1 (en) * 1997-12-09 1999-06-17 Matsushita Electric Industrial Co., Ltd. Angle-of-rotation measuring instrument urine analysis method
EP1553399A1 (en) * 2004-01-12 2005-07-13 Samsung Electronics Co., Ltd. Body fluid components measuring apparatus and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999030132A1 (en) * 1997-12-09 1999-06-17 Matsushita Electric Industrial Co., Ltd. Angle-of-rotation measuring instrument urine analysis method
EP1553399A1 (en) * 2004-01-12 2005-07-13 Samsung Electronics Co., Ltd. Body fluid components measuring apparatus and method

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