FI56903C - Anordning foer maetning av fuktinnehaollet i ett arkmaterial - Google Patents

Anordning foer maetning av fuktinnehaollet i ett arkmaterial Download PDF

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Publication number
FI56903C
FI56903C FI2738/73A FI273873A FI56903C FI 56903 C FI56903 C FI 56903C FI 2738/73 A FI2738/73 A FI 2738/73A FI 273873 A FI273873 A FI 273873A FI 56903 C FI56903 C FI 56903C
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FI
Finland
Prior art keywords
radiation
detector
source
paper
web
Prior art date
Application number
FI2738/73A
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English (en)
Finnish (fi)
Other versions
FI56903B (fi
Inventor
John Josehp Howarth
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 FI56903B publication Critical patent/FI56903B/fi
Application granted granted Critical
Publication of FI56903C publication Critical patent/FI56903C/fi

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/86Investigating moving sheets
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3554Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content
    • G01N21/3559Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content in sheets, e.g. in paper
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/34Paper
    • G01N33/346Paper sheets

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Claims (10)

1. Anordning för mätning av fuktinnehället i ett arkmaterial (14, 14. med väsentliga strälningsspridande och -absorberande egenskaper, vilken anordning innefattar organ (17, 18), som avgränsar en bana för arkmaterialet och innefattar dels en strälningskälla (S), vilken är belägen pä en sida om banan och emitterar strälning inom ett spektralband, i vilket strälningen är relativt känslig för absorption i vatten, och ett annat spektralband, i vilket strälningen är relativt okänslig för absorption i vatten, medan strälningen i bäda spektralbanden är känsliga för absorption och spridning i arkmaterialet, dels en strälningsdetektor (D) invid banan för mottagning av en del av strälningen, efter det att denna träffat arkmaterialet i banan, och för omvandling av den mottagna strälningen tili en elekt-risk signal, samt organ (23, 24; 23’, 24'; 32; 51-54; 55, 56), som är sä anordnade relativt källan, detektorn och banan, att de i sam-verkan med arkmaterialet ästadkommer väsentlig och upprepad spridning 13 £16903 med reflektion av väsentligen all strälningen under dennas väg frän kallan till detektorn för att förhindra direkt överföring av nägon väsentlig strälningsmängd frän kallan tili detektorn, var-vid den elektriska signalen är proportionell mot fuktinnehället och fuktmätningen är väsentligen oberoende av fluktuationer i ark-materialets spridning eller absorption, kännetecknad därav, att de direkt överföring förhindrande organen (23, 24; 23', 24'; 32; 51-54; 55, 56) innefattar strälningsspridande material (51, 52; 55, 56) i ett sädant läge invid banan, att all straining som rör sig frän källan (S) tili detektorn (D) avskäres därav.
2. Anordning enligt patentkravet 1, kännetecknad därav, att de banan avgränsande organen (17, 18) innefattar ätskilda element (17a, 18a; 30, 31) med ytor, mellan vilka arkina teriä let (14, 14') passerar.
3. Anordning enligt patentkravet 2, kännetecknad därav, att de ätskilda elementen (17a, 18a; 30, 31) har öppningar (21, 22; 28, 29), tili vilka källan (S) och detektorn (D) är kopplade.
4. Anordning enligt patentkravet 3, kännetecknad därav, att arkmaterialet (14, 14’) är sammanhängande över ätminstone en av ytorna och täcker ätminstone en av öppningarna (21, 22; 28, 29).
5. Anordning enligt patentkravet 4, kännetecknad därav, att källan (S) och detektorn (D) är kopplade tili öppningar (21, 22) pä motsatta sidor om arkmaterialets (14, 14') bana.
6. Anordning enligt patentkravet 5, kännetecknad därav, att källans (S) öppning (22) relativt banan är förskjuten i sidled frän detektorns (D) öppning (21).
7. Anordning enligt patentkravet 5, kännetecknad därav, att källans (S) och detektorns (D) öppningar (21, 22) är inriktade mot varandra.
FI2738/73A 1972-09-05 1973-09-03 Anordning foer maetning av fuktinnehaollet i ett arkmaterial FI56903C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28605372A 1972-09-05 1972-09-05
US28605372 1972-09-05

Publications (2)

Publication Number Publication Date
FI56903B FI56903B (fi) 1979-12-31
FI56903C true FI56903C (fi) 1980-04-10

Family

ID=23096856

Family Applications (1)

Application Number Title Priority Date Filing Date
FI2738/73A FI56903C (fi) 1972-09-05 1973-09-03 Anordning foer maetning av fuktinnehaollet i ett arkmaterial

Country Status (9)

Country Link
US (1) US3793524A (sv)
JP (1) JPS5749854B2 (sv)
CA (1) CA958915A (sv)
CH (1) CH570618A5 (sv)
DE (1) DE2343869C3 (sv)
FI (1) FI56903C (sv)
GB (1) GB1420854A (sv)
NO (1) NO146517C (sv)
SE (1) SE388485B (sv)

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US4306151A (en) * 1978-02-03 1981-12-15 Measurex Corporation Method of measuring the amount of substance associated with a material in the presence of a contaminant
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GB2046432B (en) * 1979-04-09 1983-05-11 Infrared Eng Ltd Apparatus for determining the thickness moisture content or other parameter of a film or coating
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US4319847A (en) * 1979-12-05 1982-03-16 Measurex Corporation Apparatus to measure select properties of a moving sheet with improved standardization means
US4277177A (en) * 1979-12-05 1981-07-07 Measurex Corporation Apparatus to measure select properties of a moving sheet
JPS6042359Y2 (ja) * 1980-07-04 1985-12-26 横河電機株式会社 赤外線分析装置
US4406545A (en) * 1981-05-07 1983-09-27 Western Electric Company, Inc. Methods of and apparatus for measuring surface areas
JPS57186156A (en) * 1981-05-13 1982-11-16 Yokogawa Hokushin Electric Corp Characteristic measuring device for sheet of body
JPS5838036A (ja) * 1981-08-29 1983-03-05 Fujitsu Ltd レベル検出方式
JPS5842657U (ja) * 1981-09-12 1983-03-22 加茂 栄一 製紙における光学式坪量検出装置
DE3370181D1 (en) * 1982-05-17 1987-04-16 Measurex Corp Gauge for measuring a sheet of material
GB2127541B (en) * 1982-09-27 1986-08-20 Imp Group Plc Monitoring sheet material
US4577104A (en) * 1984-01-20 1986-03-18 Accuray Corporation Measuring the percentage or fractional moisture content of paper having a variable infrared radiation scattering characteristic and containing a variable amount of a broadband infrared radiation absorber
US4769544A (en) * 1984-06-01 1988-09-06 Measurex Corporation System and process for measuring fiberglass
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US4928013A (en) * 1987-02-17 1990-05-22 Measurex Corporation Temperature insensitive moisture sensor
US4823008A (en) * 1987-11-05 1989-04-18 Process Automation Business, Inc. Apparatus and methods employing infrared absorption means to measure the moisture content of heavy grades of paper
US4957770A (en) * 1989-01-27 1990-09-18 Measurex Corporation Coating weight measuring and control apparatus and method
US5049216A (en) * 1989-05-31 1991-09-17 Measurex Corporation Warp control apparatus and method for sheet material
US5166747A (en) * 1990-06-01 1992-11-24 Schlumberger Technology Corporation Apparatus and method for analyzing the composition of formation fluids
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US6253604B1 (en) * 2000-01-19 2001-07-03 Impact Systems, Inc. Scanner with interior gauging head and combined dust and drive belt
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Also Published As

Publication number Publication date
FI56903B (fi) 1979-12-31
DE2343869C3 (de) 1979-03-08
JPS5749854B2 (sv) 1982-10-25
NO146517B (no) 1982-07-05
US3793524A (en) 1974-02-19
NO146517C (no) 1982-10-13
SE388485B (sv) 1976-10-04
JPS4966194A (sv) 1974-06-26
GB1420854A (en) 1976-01-14
CA958915A (en) 1974-12-10
DE2343869B2 (de) 1978-07-13
DE2343869A1 (de) 1974-03-28
CH570618A5 (sv) 1975-12-15

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