JPS5456495A - Detector of water contents of cereals - Google Patents

Detector of water contents of cereals

Info

Publication number
JPS5456495A
JPS5456495A JP12235077A JP12235077A JPS5456495A JP S5456495 A JPS5456495 A JP S5456495A JP 12235077 A JP12235077 A JP 12235077A JP 12235077 A JP12235077 A JP 12235077A JP S5456495 A JPS5456495 A JP S5456495A
Authority
JP
Japan
Prior art keywords
slots
cereals
water contents
attenuation
wattmeter
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.)
Pending
Application number
JP12235077A
Other languages
Japanese (ja)
Inventor
Hidekazu Hase
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12235077A priority Critical patent/JPS5456495A/en
Publication of JPS5456495A publication Critical patent/JPS5456495A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
    • G01N22/04—Investigating moisture content

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (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 Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

PURPOSE:To make possible the reduction in the variations in measurement values by measuring the water contents of the cereals, tec. placed on the slots provided to the metal film bonded to one side of a low-microwave-loss dielectric substrate from the attenuation quantity of the radio waves being propagated. CONSTITUTION:Strip lines 12, 13 for coupling are provided on the back of a metal film 10 provided with slots 9, by way of a dielectric substrate 11, and cereals 7 being the specimen to be measured are connected to the slots 9. The output of a microwave oscillator 2 is directed to the slots 9 through the line 12, passes therethrough by receiving attenuation according to the moisture content of the cereals 7 placed on the slots 9, are again led into the line 13 from the slots 9 and is received in a wattmeter 8. Hence, by comparing the transmission power and the value of the wattmeter 8 which has received the effect of the moisture contents of the cereals 7 and from the quantity of the attenuation, the water contents may be measured with good accuracy.
JP12235077A 1977-10-14 1977-10-14 Detector of water contents of cereals Pending JPS5456495A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12235077A JPS5456495A (en) 1977-10-14 1977-10-14 Detector of water contents of cereals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12235077A JPS5456495A (en) 1977-10-14 1977-10-14 Detector of water contents of cereals

Publications (1)

Publication Number Publication Date
JPS5456495A true JPS5456495A (en) 1979-05-07

Family

ID=14833748

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12235077A Pending JPS5456495A (en) 1977-10-14 1977-10-14 Detector of water contents of cereals

Country Status (1)

Country Link
JP (1) JPS5456495A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5296096A (en) * 1976-02-06 1977-08-12 Matsushita Electric Ind Co Ltd Water-content detecting apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5296096A (en) * 1976-02-06 1977-08-12 Matsushita Electric Ind Co Ltd Water-content detecting apparatus

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