JPS5729932A - Method and device for measuring moisture quantity and moisture percentage or the like of paper - Google Patents

Method and device for measuring moisture quantity and moisture percentage or the like of paper

Info

Publication number
JPS5729932A
JPS5729932A JP10476980A JP10476980A JPS5729932A JP S5729932 A JPS5729932 A JP S5729932A JP 10476980 A JP10476980 A JP 10476980A JP 10476980 A JP10476980 A JP 10476980A JP S5729932 A JPS5729932 A JP S5729932A
Authority
JP
Japan
Prior art keywords
light beam
dust
moisture
adhered
measuring
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
JP10476980A
Other languages
Japanese (ja)
Other versions
JPS6123500B2 (en
Inventor
Seiichiro Kiyobe
Haruo Kuroji
Masaaki Inoue
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 JP10476980A priority Critical patent/JPS5729932A/en
Publication of JPS5729932A publication Critical patent/JPS5729932A/en
Publication of JPS6123500B2 publication Critical patent/JPS6123500B2/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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/86—Investigating moving sheets

Abstract

PURPOSE:To measure the moisture quantity and the moisture percentage, by generating an error correcting function based on a calibration measured value after dust has adhered, in case when no dust has adhered to each part by a standard sample through a multiple scattered optical system and a transmission optical system, of a reference light beam and a measuring light beam. CONSTITUTION:A reference light beam and a measuring light beam passing through reference light beam and measuring light beam filters 42, 43 of a continuous rotary sector 42 are cut off and controlled by through-holes 61... of an intermittent rotary wheel 60, and are projected from irradiation windows 11, 12 of an upper head 10 provided with a scattered surface 13. This projected light beam passes through paper 30 and is photodetected by a sensor 25 through a lens 23 of a lower head 22 provided with a scattered surface 22. By a standard sample in case when no dust adheres to the windows 11, 12 and the surfaces 13, 22, etc., the sensor 25 detects calibration signals Rno, Rto and Mno, Mto by scattering and transmission of a reference signal and a measuring signal. In the same way, calibration signals Rnd, Rtd and Mnd, Mtd in case when prescribed dust has adhered are detected. When a dust error of an actual measured value is corrected by generating a correcting function by a value based on the expression I, the moisture quantity and the moisture percentage are measured with high accuracy.
JP10476980A 1980-07-30 1980-07-30 Method and device for measuring moisture quantity and moisture percentage or the like of paper Granted JPS5729932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10476980A JPS5729932A (en) 1980-07-30 1980-07-30 Method and device for measuring moisture quantity and moisture percentage or the like of paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10476980A JPS5729932A (en) 1980-07-30 1980-07-30 Method and device for measuring moisture quantity and moisture percentage or the like of paper

Publications (2)

Publication Number Publication Date
JPS5729932A true JPS5729932A (en) 1982-02-18
JPS6123500B2 JPS6123500B2 (en) 1986-06-06

Family

ID=14389674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10476980A Granted JPS5729932A (en) 1980-07-30 1980-07-30 Method and device for measuring moisture quantity and moisture percentage or the like of paper

Country Status (1)

Country Link
JP (1) JPS5729932A (en)

Also Published As

Publication number Publication date
JPS6123500B2 (en) 1986-06-06

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