JPS56138240A - Method and apparatus for measuring water quantity, water percentage and the like of paper - Google Patents

Method and apparatus for measuring water quantity, water percentage and the like of paper

Info

Publication number
JPS56138240A
JPS56138240A JP1604380A JP1604380A JPS56138240A JP S56138240 A JPS56138240 A JP S56138240A JP 1604380 A JP1604380 A JP 1604380A JP 1604380 A JP1604380 A JP 1604380A JP S56138240 A JPS56138240 A JP S56138240A
Authority
JP
Japan
Prior art keywords
light beam
water
measuring
area quantity
paper
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
JP1604380A
Other languages
Japanese (ja)
Other versions
JPS6123496B2 (en
Inventor
Naozo Taniguchi
Seiichiro Kiyobe
Seiji Takita
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP1604380A priority Critical patent/JPS56138240A/en
Publication of JPS56138240A publication Critical patent/JPS56138240A/en
Publication of JPS6123496B2 publication Critical patent/JPS6123496B2/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
    • G01N21/25—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

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (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 accurately measure both the water quantity and the water percentage, by measuring the intensity of a transmission light beam and a scattering light beam of paper to be measured, against a measuring light beam and a reference light beam. CONSTITUTION:A light beam from the light source 6 becomes two light paths, they mutually pass through the filter 9 for a reference light beam (R) and a measuring light beam (M), which is installed to the rotary light wheel 8, pass through a newspaper 3 through the windows 4, 4' of the upper head 1, and a multiple reflected ray (subscript ''n'') and a transmission light beam (subscript ''t'') go into the photosensitive element 12 through the window 5 of the lower head. Signals Rn, Mn, Rt, Mt are output by time series from the element 12. The I1 signals Mn/Rn from the moisture detection part A, and the I2 signals Rn/Rt are sent to the transmission compensating part C and the area quantity compensating part D. In the D part, the area quantity to I2 is compensated by an area quantity signal I3 from the area quantity detection part B, a signal I4 is sent to the C part, compensation to mixing of old paper is executed, and water percentage Is in a prescribed value of I3 is calculated and output by a signal I5 in the area quantity compensating part E. In this way, water quantity and water percentage can be measured accurately.
JP1604380A 1980-02-14 1980-02-14 Method and apparatus for measuring water quantity, water percentage and the like of paper Granted JPS56138240A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1604380A JPS56138240A (en) 1980-02-14 1980-02-14 Method and apparatus for measuring water quantity, water percentage and the like of paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1604380A JPS56138240A (en) 1980-02-14 1980-02-14 Method and apparatus for measuring water quantity, water percentage and the like of paper

Publications (2)

Publication Number Publication Date
JPS56138240A true JPS56138240A (en) 1981-10-28
JPS6123496B2 JPS6123496B2 (en) 1986-06-06

Family

ID=11905537

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1604380A Granted JPS56138240A (en) 1980-02-14 1980-02-14 Method and apparatus for measuring water quantity, water percentage and the like of paper

Country Status (1)

Country Link
JP (1) JPS56138240A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02115750A (en) * 1988-10-25 1990-04-27 Yokogawa Electric Corp Infrared moisture meter less affected by basis weight

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02115750A (en) * 1988-10-25 1990-04-27 Yokogawa Electric Corp Infrared moisture meter less affected by basis weight

Also Published As

Publication number Publication date
JPS6123496B2 (en) 1986-06-06

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