KR970010977B1 - Concentration measuring method using photo absorption - Google Patents

Concentration measuring method using photo absorption Download PDF

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Publication number
KR970010977B1
KR970010977B1 KR93025014A KR930025014A KR970010977B1 KR 970010977 B1 KR970010977 B1 KR 970010977B1 KR 93025014 A KR93025014 A KR 93025014A KR 930025014 A KR930025014 A KR 930025014A KR 970010977 B1 KR970010977 B1 KR 970010977B1
Authority
KR
South Korea
Prior art keywords
light
sample
density
measuring method
fluid
Prior art date
Application number
KR93025014A
Other languages
Korean (ko)
Other versions
KR950009227A (en
Inventor
Yukio Nakano
Original Assignee
Korea Measurement System Co
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 Korea Measurement System Co filed Critical Korea Measurement System Co
Priority to KR93025014A priority Critical patent/KR970010977B1/en
Publication of KR950009227A publication Critical patent/KR950009227A/en
Application granted granted Critical
Publication of KR970010977B1 publication Critical patent/KR970010977B1/en

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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
    • G01N21/59—Transmissivity

Abstract

A method of measuring a density using a light absorption is disclosed. A light from a direct current light source(11) is passed or blocked by a shutter(12). The light from the shutter(12) is passed through a sample cell(14). The sample changer(15,16) changes a zero density fluid and a measuring sample fluid or a standard sample fluid. The interference component of the light from the sample cell(14) is removed by a light filter(17). The light from the light filter(17) is measured by a detector(18). The measured light is amplified by an amplifier(19) and the output from the amplifier is provided to a controller(21) wherein the density of the sample is calculated. The calculated density is displayed at a digital displayer(22).
KR93025014A 1993-09-23 1993-11-23 Concentration measuring method using photo absorption KR970010977B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR93025014A KR970010977B1 (en) 1993-09-23 1993-11-23 Concentration measuring method using photo absorption

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR930019538 1993-09-23
KR93-19538 1993-09-23
KR93025014A KR970010977B1 (en) 1993-09-23 1993-11-23 Concentration measuring method using photo absorption

Publications (2)

Publication Number Publication Date
KR950009227A KR950009227A (en) 1995-04-21
KR970010977B1 true KR970010977B1 (en) 1997-07-05

Family

ID=66826774

Family Applications (1)

Application Number Title Priority Date Filing Date
KR93025014A KR970010977B1 (en) 1993-09-23 1993-11-23 Concentration measuring method using photo absorption

Country Status (1)

Country Link
KR (1) KR970010977B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019189970A1 (en) * 2018-03-30 2019-10-03 주식회사 씨엠랩 Blood flow measuring apparatus and method having function of correcting noise due to pressure

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101609467B1 (en) 2014-09-05 2016-04-05 금오공과대학교 산학협력단 Composition Analysis Method for Cathode Material of Li Ion Rechargeable Battery
WO2017029791A1 (en) * 2015-08-18 2017-02-23 国立大学法人徳島大学 Concentration measurement device
JP6767442B2 (en) * 2018-08-24 2020-10-14 株式会社東芝 Measuring instrument, etching system, silicon concentration measurement method, and silicon concentration measurement program

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019189970A1 (en) * 2018-03-30 2019-10-03 주식회사 씨엠랩 Blood flow measuring apparatus and method having function of correcting noise due to pressure

Also Published As

Publication number Publication date
KR950009227A (en) 1995-04-21

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