CA1198908A - Piezoelectric moisture measuring device - Google Patents
Piezoelectric moisture measuring deviceInfo
- Publication number
- CA1198908A CA1198908A CA000435500A CA435500A CA1198908A CA 1198908 A CA1198908 A CA 1198908A CA 000435500 A CA000435500 A CA 000435500A CA 435500 A CA435500 A CA 435500A CA 1198908 A CA1198908 A CA 1198908A
- Authority
- CA
- Canada
- Prior art keywords
- crystal
- moisture
- capacitor
- ambient
- sonically
- 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
Links
- 239000013078 crystal Substances 0.000 claims abstract description 56
- 239000003990 capacitor Substances 0.000 claims abstract description 26
- 230000004044 response Effects 0.000 claims abstract description 15
- 230000008859 change Effects 0.000 claims abstract description 14
- 230000005284 excitation Effects 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 14
- 239000003129 oil well Substances 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims 3
- 238000010408 sweeping Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 5
- 238000010793 Steam injection (oil industry) Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000013707 sensory perception of sound Effects 0.000 description 2
- BHELIUBJHYAEDK-OAIUPTLZSA-N Aspoxicillin Chemical compound C1([C@H](C(=O)N[C@@H]2C(N3[C@H](C(C)(C)S[C@@H]32)C(O)=O)=O)NC(=O)[C@H](N)CC(=O)NC)=CC=C(O)C=C1 BHELIUBJHYAEDK-OAIUPTLZSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000010795 Steam Flooding Methods 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K5/00—Measuring temperature based on the expansion or contraction of a material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02845—Humidity, wetness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02863—Electric or magnetic parameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
Landscapes
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US413,286 | 1982-08-31 | ||
| US06/413,286 US4491784A (en) | 1982-08-31 | 1982-08-31 | Piezoelectric moisture measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1198908A true CA1198908A (en) | 1986-01-07 |
Family
ID=23636649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000435500A Expired CA1198908A (en) | 1982-08-31 | 1983-08-26 | Piezoelectric moisture measuring device |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4491784A (Direct) |
| EP (1) | EP0106470B1 (Direct) |
| JP (1) | JPS5965247A (Direct) |
| KR (1) | KR900005478B1 (Direct) |
| AR (1) | AR241330A1 (Direct) |
| AT (1) | ATE34846T1 (Direct) |
| BR (1) | BR8304589A (Direct) |
| CA (1) | CA1198908A (Direct) |
| DE (1) | DE3376878D1 (Direct) |
| IN (1) | IN162581B (Direct) |
| MX (1) | MX154786A (Direct) |
| PH (1) | PH20323A (Direct) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63226506A (ja) * | 1987-03-16 | 1988-09-21 | Matsushita Electric Ind Co Ltd | 触媒燃焼装置 |
| US6554424B1 (en) | 1999-03-01 | 2003-04-29 | Boston Innovative Optices, Inc. | System and method for increasing the depth of focus of the human eye |
| KR100815294B1 (ko) | 2006-06-28 | 2008-03-19 | 한국폴리텍Iv대학 산학협력단 | 회복전압법과 유전특성을 이용한 수분량 검출 장치 및 방법 |
| US20110133755A1 (en) * | 2009-12-08 | 2011-06-09 | Delphi Technologies, Inc. | System and Method of Occupant Detection with a Resonant Frequency |
| GB2496136A (en) * | 2011-11-01 | 2013-05-08 | Isis Innovation | Passive capacitive moisture detector |
| US9032792B2 (en) * | 2012-01-19 | 2015-05-19 | Nalco Company | Fouling reduction device and method |
| JP6046160B2 (ja) | 2011-12-02 | 2016-12-14 | アキュフォーカス・インコーポレーテッド | 選択的分光透過性を有する眼科マスク |
| US9204962B2 (en) | 2013-03-13 | 2015-12-08 | Acufocus, Inc. | In situ adjustable optical mask |
| US9427922B2 (en) | 2013-03-14 | 2016-08-30 | Acufocus, Inc. | Process for manufacturing an intraocular lens with an embedded mask |
| CN105452853B (zh) * | 2013-08-13 | 2018-01-30 | 株式会社村田制作所 | 温湿度传感器 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2536111A (en) * | 1945-07-04 | 1951-01-02 | Karl S Van Dyke | Dew point hygrometer |
| US3256482A (en) * | 1962-02-23 | 1966-06-14 | Nat Tank Co | Basic sediment and water monitor utilizing a plurality of selectable compensating capacitors in a resonant detecting circuit |
| GB1340703A (en) * | 1970-04-22 | 1973-12-12 | Atomic Energy Authority Uk | Transducers for measuring apparatus |
| JPS5255580A (en) * | 1975-10-30 | 1977-05-07 | Matsushita Electric Ind Co Ltd | Humidity sensor |
| US4312228A (en) * | 1979-07-30 | 1982-01-26 | Henry Wohltjen | Methods of detection with surface acoustic wave and apparati therefor |
| JPS56119474A (en) * | 1980-02-25 | 1981-09-19 | Nippon Denso Co | Device for responding to refrigerang amount for refrigerant circulating apparatus |
-
1982
- 1982-08-31 US US06/413,286 patent/US4491784A/en not_active Expired - Fee Related
-
1983
- 1983-08-25 BR BR8304589A patent/BR8304589A/pt not_active IP Right Cessation
- 1983-08-26 JP JP58155160A patent/JPS5965247A/ja active Granted
- 1983-08-26 CA CA000435500A patent/CA1198908A/en not_active Expired
- 1983-08-29 IN IN1045/CAL/83A patent/IN162581B/en unknown
- 1983-08-29 PH PH29465A patent/PH20323A/en unknown
- 1983-08-30 KR KR1019830004060A patent/KR900005478B1/ko not_active Expired
- 1983-08-30 AR AR83294054A patent/AR241330A1/es active
- 1983-08-31 AT AT83305013T patent/ATE34846T1/de not_active IP Right Cessation
- 1983-08-31 MX MX198578A patent/MX154786A/es unknown
- 1983-08-31 EP EP83305013A patent/EP0106470B1/en not_active Expired
- 1983-08-31 DE DE8383305013T patent/DE3376878D1/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4491784A (en) | 1985-01-01 |
| AR241330A1 (es) | 1992-05-29 |
| DE3376878D1 (en) | 1988-07-07 |
| ATE34846T1 (de) | 1988-06-15 |
| EP0106470A2 (en) | 1984-04-25 |
| JPS5965247A (ja) | 1984-04-13 |
| EP0106470A3 (en) | 1985-05-02 |
| EP0106470B1 (en) | 1988-06-01 |
| PH20323A (en) | 1986-11-25 |
| MX154786A (es) | 1987-12-11 |
| KR900005478B1 (ko) | 1990-07-30 |
| IN162581B (Direct) | 1988-06-11 |
| JPH0257865B2 (Direct) | 1990-12-06 |
| BR8304589A (pt) | 1984-04-03 |
| KR840006070A (ko) | 1984-11-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |