JPS56117148A - Measuring apparatus of moisture content and moisture regain of paper - Google Patents

Measuring apparatus of moisture content and moisture regain of paper

Info

Publication number
JPS56117148A
JPS56117148A JP2031980A JP2031980A JPS56117148A JP S56117148 A JPS56117148 A JP S56117148A JP 2031980 A JP2031980 A JP 2031980A JP 2031980 A JP2031980 A JP 2031980A JP S56117148 A JPS56117148 A JP S56117148A
Authority
JP
Japan
Prior art keywords
optical system
signal
windows
window
moisture
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
JP2031980A
Other languages
Japanese (ja)
Other versions
JPS6123497B2 (en
Inventor
Seiichiro Kiyobe
Masaaki Inoue
Haruo Kuroji
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 JP2031980A priority Critical patent/JPS56117148A/en
Publication of JPS56117148A publication Critical patent/JPS56117148A/en
Publication of JPS6123497B2 publication Critical patent/JPS6123497B2/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 improve measuring accuracy, by forming multiple scattering type optical system by the first irradiation window and incidence window and transmissive optical system by the second irradiation window and incidence window, then, reducing the variation of Rn/Rt signal due to the shift of upper and lower head. CONSTITUTION:The upper head 1 having the irradiation windows 4, 4' and the lower head 2 having the incidence window 5 are disposed opposite to each other with the paper 3 between. Further, the rotary wheel 8 having the filter for measuring light 9 and filter for reference light 10 is provided to the head 1 and the transmissive optical system is formed by said windows 4' and 5 and also, multiple scattering type optical system is formed by said windows 4 and 5. Accordingly, measuring accuracy can be improved by obtaining measured value of moisture content and moisture regain as stabilized signal for shift, by compensating the ratio signals of the measured signal Mn and reference signal Rn detected by the latter optical system with the ratio signals of the signal Rn and reference signal Rt detected by the former optical system.
JP2031980A 1980-02-20 1980-02-20 Measuring apparatus of moisture content and moisture regain of paper Granted JPS56117148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2031980A JPS56117148A (en) 1980-02-20 1980-02-20 Measuring apparatus of moisture content and moisture regain of paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2031980A JPS56117148A (en) 1980-02-20 1980-02-20 Measuring apparatus of moisture content and moisture regain of paper

Publications (2)

Publication Number Publication Date
JPS56117148A true JPS56117148A (en) 1981-09-14
JPS6123497B2 JPS6123497B2 (en) 1986-06-06

Family

ID=12023803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2031980A Granted JPS56117148A (en) 1980-02-20 1980-02-20 Measuring apparatus of moisture content and moisture regain of paper

Country Status (1)

Country Link
JP (1) JPS56117148A (en)

Also Published As

Publication number Publication date
JPS6123497B2 (en) 1986-06-06

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