CA2007300C - Method and apparatus for determining the moisture content of a material - Google Patents
Method and apparatus for determining the moisture content of a material Download PDFInfo
- Publication number
- CA2007300C CA2007300C CA 2007300 CA2007300A CA2007300C CA 2007300 C CA2007300 C CA 2007300C CA 2007300 CA2007300 CA 2007300 CA 2007300 A CA2007300 A CA 2007300A CA 2007300 C CA2007300 C CA 2007300C
- Authority
- CA
- Canada
- Prior art keywords
- signal
- frequency
- moisture content
- microwave
- designed
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title abstract description 29
- 230000008859 change Effects 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 claims description 41
- 238000007620 mathematical function Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 description 13
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 5
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001956 neutron scattering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001702 transmitter Effects 0.000 description 1
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)
- Radar Systems Or Details Thereof (AREA)
- Geophysics And Detection Of Objects (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI890201 | 1989-01-13 | ||
| FI890201A FI84402C (fi) | 1989-01-13 | 1989-01-13 | Foerfarande och anordning foer bestaemning av fukthalt i materialet. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2007300A1 CA2007300A1 (en) | 1990-07-13 |
| CA2007300C true CA2007300C (en) | 2000-09-26 |
Family
ID=8527725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2007300 Expired - Lifetime CA2007300C (en) | 1989-01-13 | 1990-01-08 | Method and apparatus for determining the moisture content of a material |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP3026223B2 (de) |
| CA (1) | CA2007300C (de) |
| DE (1) | DE4000925C2 (de) |
| FI (1) | FI84402C (de) |
| SE (1) | SE505241C2 (de) |
Families Citing this family (12)
| 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 |
| EP3014254B1 (de) * | 2013-06-28 | 2022-10-12 | Sensors & Software Inc. | System und verfahren zur messung der materialeigenschaft mithilfe eines variablen reflektors |
| 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)
| 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 |
-
1989
- 1989-01-13 FI FI890201A patent/FI84402C/fi not_active IP Right Cessation
-
1990
- 1990-01-08 CA CA 2007300 patent/CA2007300C/en not_active Expired - Lifetime
- 1990-01-09 SE SE9000065A patent/SE505241C2/sv not_active IP Right Cessation
- 1990-01-12 JP JP2005402A patent/JP3026223B2/ja not_active Expired - Lifetime
- 1990-01-15 DE DE4000925A patent/DE4000925C2/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| SE9000065D0 (sv) | 1990-01-09 |
| CA2007300A1 (en) | 1990-07-13 |
| FI84402B (fi) | 1991-08-15 |
| JP3026223B2 (ja) | 2000-03-27 |
| FI890201A (fi) | 1990-07-14 |
| DE4000925C2 (de) | 1998-01-22 |
| FI84402C (fi) | 1991-11-25 |
| SE505241C2 (sv) | 1997-07-21 |
| DE4000925A1 (de) | 1990-07-19 |
| FI890201A0 (fi) | 1989-01-13 |
| SE9000065L (sv) | 1990-07-14 |
| JPH02238348A (ja) | 1990-09-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |