CA2007300A1 - Methode pour determiner la teneur en humidite d'un materiau, et appareil connexe - Google Patents

Methode pour determiner la teneur en humidite d'un materiau, et appareil connexe

Info

Publication number
CA2007300A1
CA2007300A1 CA2007300A CA2007300A CA2007300A1 CA 2007300 A1 CA2007300 A1 CA 2007300A1 CA 2007300 A CA2007300 A CA 2007300A CA 2007300 A CA2007300 A CA 2007300A CA 2007300 A1 CA2007300 A1 CA 2007300A1
Authority
CA
Canada
Prior art keywords
moisture content
change
velocity
measured
microwave signal
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
CA2007300A
Other languages
English (en)
Other versions
CA2007300C (fr
Inventor
Pekka Jakkula
Esko Tahkola
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.)
Valmet Automation Oy
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2007300A1 publication Critical patent/CA2007300A1/fr
Application granted granted Critical
Publication of CA2007300C publication Critical patent/CA2007300C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Radar Systems Or Details Thereof (AREA)
CA002007300A 1989-01-13 1990-01-08 Methode pour determiner la teneur en humidite d'un materiau, et appareil connexe Expired - Lifetime CA2007300C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI890201A FI84402C (fi) 1989-01-13 1989-01-13 Foerfarande och anordning foer bestaemning av fukthalt i materialet.
FI890201 1989-01-13

Publications (2)

Publication Number Publication Date
CA2007300A1 true CA2007300A1 (fr) 1990-07-13
CA2007300C CA2007300C (fr) 2000-09-26

Family

ID=8527725

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002007300A Expired - Lifetime CA2007300C (fr) 1989-01-13 1990-01-08 Methode pour determiner la teneur en humidite d'un materiau, et appareil connexe

Country Status (5)

Country Link
JP (1) JP3026223B2 (fr)
CA (1) CA2007300C (fr)
DE (1) DE4000925C2 (fr)
FI (1) FI84402C (fr)
SE (1) SE505241C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3014254A4 (fr) * 2013-06-28 2017-05-17 Sensors & Software Inc. Système et procédé pour la mesure d'une propriété de matière utilisant un réflecteur variable

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3160474B2 (ja) * 1994-09-12 2001-04-25 株式会社東芝 マイクロ波濃度計
DE19725305A1 (de) * 1997-06-14 1998-12-17 Micas Elektronik Gmbh U Co Kg Verfahren und Vorrichtung zur Bestimmung des Feuchtigkeitsgehalts von Gegenständen
FI104447B (fi) * 1998-07-10 2000-01-31 Valmet Automation Inc Menetelmä ja mittalaite nestemäisen aineen kaasupitoisuuden mittaamiseksi
JP2000111499A (ja) 1998-10-02 2000-04-21 Toshiba Fa Syst Eng Corp マイクロ波濃度測定装置
US6854322B2 (en) * 2002-06-10 2005-02-15 The Procter & Gamble Company Directional coupler sensor
US7151380B2 (en) 2004-08-06 2006-12-19 Voith Paper Patent Gmbh Microwave water weight sensor and process
DE102004058641B4 (de) * 2004-12-01 2007-03-01 Agueeva, Olga, Dr. Verfahren zur kontinuierlichen oder diskontinuierlichen Bestimmung der Konzentration der enthaltenen Bestandteile in einem Medium mittels Auswertung der das Medium durchdringende Mikrowellen
DE102006052789B3 (de) * 2006-11-09 2008-07-10 Festo Ag & Co Verfahren und Positionsmessvorrichtung zur Bestimmung einer Position eines Messobjekts
DE102014216466A1 (de) * 2014-08-20 2016-02-25 Bayerische Motoren Werke Aktiengesellschaft Quantitative Bestimmung des Wassergehalts an Werkstoffen
CN104977312B (zh) * 2015-06-18 2017-10-13 四川莱源科技有限公司 雷达型微波测水仪器的测试方法
DE102017202214B4 (de) 2017-02-13 2019-06-27 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Anordnung zur Messung von Eigenschaften einer Materialbahn

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851244A (en) * 1973-12-18 1974-11-26 Electronic Ass Of Canada Ltd Microwave moisture measuring apparatus
NL8100250A (nl) * 1980-03-13 1981-10-01 Halliburton Co Akoestisch logstelsel met zwaai-energiebron.
DE3150202A1 (de) * 1981-12-18 1983-06-23 Philips Patentverwaltung Gmbh, 2000 Hamburg Anordnung zur messung der feuchte
JPH0785062B2 (ja) * 1987-06-09 1995-09-13 建設省土木研究所長 電磁波による土の乾燥密度の測定方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3014254A4 (fr) * 2013-06-28 2017-05-17 Sensors & Software Inc. Système et procédé pour la mesure d'une propriété de matière utilisant un réflecteur variable
US10247680B2 (en) 2013-06-28 2019-04-02 Sensors & Software Inc. System and method for measurement of material property using variable reflector
US10527560B2 (en) 2013-06-28 2020-01-07 Sensors & Software Inc. System and method for measurement of material property using variable reflector

Also Published As

Publication number Publication date
JP3026223B2 (ja) 2000-03-27
DE4000925A1 (de) 1990-07-19
CA2007300C (fr) 2000-09-26
FI84402C (fi) 1991-11-25
DE4000925C2 (de) 1998-01-22
FI84402B (fi) 1991-08-15
FI890201A0 (fi) 1989-01-13
SE505241C2 (sv) 1997-07-21
JPH02238348A (ja) 1990-09-20
FI890201A7 (fi) 1990-07-14
SE9000065D0 (sv) 1990-01-09
SE9000065L (sv) 1990-07-14

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