SE7900926L - SET TO DETERMINE THE QUANTITY OF A SUBJECT IN A MATERIAL IN THE PRESENCE OF A POLLUTION - Google Patents

SET TO DETERMINE THE QUANTITY OF A SUBJECT IN A MATERIAL IN THE PRESENCE OF A POLLUTION

Info

Publication number
SE7900926L
SE7900926L SE7900926A SE7900926A SE7900926L SE 7900926 L SE7900926 L SE 7900926L SE 7900926 A SE7900926 A SE 7900926A SE 7900926 A SE7900926 A SE 7900926A SE 7900926 L SE7900926 L SE 7900926L
Authority
SE
Sweden
Prior art keywords
contaminant
specimen
substance
absorption band
beams
Prior art date
Application number
SE7900926A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
L M Chase
Original Assignee
Measurex 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 Measurex Corp filed Critical Measurex Corp
Publication of SE7900926L publication Critical patent/SE7900926L/en

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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths

Abstract

The quantity of a substance in a specimen is determined in the presence of a contaminant by using a first beam of radiation within an absorption band of the contaminant and a second beam of radiation within both an absorption band of the contaminant and an absorption band of the substance, the respective intensifies of the beams after incidence upon the specimen being detected and converted into electrical signals, functions of which are subtracted to indicate directly the quantity of the substance in the specimen. The beams may be transmitted through a paper sheet 40 with the aid of diffuse reflectors 41, 43, to determine the water content despite carbon contaminant particles 46 (e.g. from recycled pulp), suitable wavelengths being 1.8 mu and 1.94 mu . Reflection may also be used. Appropriate equations for determining the water content are given. <IMAGE>
SE7900926A 1978-02-03 1979-02-02 SET TO DETERMINE THE QUANTITY OF A SUBJECT IN A MATERIAL IN THE PRESENCE OF A POLLUTION SE7900926L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87477778A 1978-02-03 1978-02-03

Publications (1)

Publication Number Publication Date
SE7900926L true SE7900926L (en) 1979-08-04

Family

ID=25364556

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7900926A SE7900926L (en) 1978-02-03 1979-02-02 SET TO DETERMINE THE QUANTITY OF A SUBJECT IN A MATERIAL IN THE PRESENCE OF A POLLUTION

Country Status (5)

Country Link
JP (1) JPS54114294A (en)
CA (1) CA1102579A (en)
FR (1) FR2416466A1 (en)
GB (1) GB2013881B (en)
SE (1) SE7900926L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602160A (en) * 1983-09-28 1986-07-22 Sentrol Systems Ltd. Infrared constituent analyzer and control system
JPS6242035A (en) * 1985-08-19 1987-02-24 Yunisoku:Kk Drying degree detecting device for leaf tobacco
JPH0372346U (en) * 1989-11-20 1991-07-22
DE19520035C1 (en) * 1995-03-31 1996-11-07 Gta Sensorik Gmbh Contactless measurement of surface moisture of objects
JP2014016373A (en) * 2013-10-30 2014-01-30 Fujifilm Corp Method of measuring component amount in coating film

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614450A (en) * 1969-02-17 1971-10-19 Measurex Corp Apparatus for measuring the amount of a substance that is associated with a base material
US3851175A (en) * 1972-10-27 1974-11-26 Measurex Corp Moisture gauge with opacity type compensation
CA1000406A (en) * 1972-10-27 1976-11-23 Measurex Corporation Moisture gauge with opacity type compensation
US4006358A (en) * 1975-06-12 1977-02-01 Measurex Corporation Method and apparatus for measuring the amount of moisture that is associated with a web of moving material

Also Published As

Publication number Publication date
GB2013881A (en) 1979-08-15
CA1102579A (en) 1981-06-09
FR2416466A1 (en) 1979-08-31
FR2416466B1 (en) 1983-06-24
JPS54114294A (en) 1979-09-06
GB2013881B (en) 1982-06-16

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