ZA200103389B - Dew point hygrometers and dew sensors. - Google Patents
Dew point hygrometers and dew sensors. Download PDFInfo
- Publication number
- ZA200103389B ZA200103389B ZA200103389A ZA200103389A ZA200103389B ZA 200103389 B ZA200103389 B ZA 200103389B ZA 200103389 A ZA200103389 A ZA 200103389A ZA 200103389 A ZA200103389 A ZA 200103389A ZA 200103389 B ZA200103389 B ZA 200103389B
- Authority
- ZA
- South Africa
- Prior art keywords
- dew
- light
- fiber
- dew point
- optic
- Prior art date
Links
- 238000009833 condensation Methods 0.000 claims abstract description 49
- 230000005494 condensation Effects 0.000 claims abstract description 49
- 230000003287 optical effect Effects 0.000 claims abstract description 35
- 230000008859 change Effects 0.000 claims abstract description 15
- 239000013307 optical fiber Substances 0.000 claims abstract 2
- 239000000835 fiber Substances 0.000 claims description 150
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000011109 contamination Methods 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 26
- 239000012212 insulator Substances 0.000 claims description 20
- 230000035945 sensitivity Effects 0.000 claims description 18
- 239000007787 solid Substances 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 14
- 238000002834 transmittance Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000003792 electrolyte Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
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- 239000007789 gas Substances 0.000 description 29
- 150000003839 salts Chemical class 0.000 description 12
- 239000000356 contaminant Substances 0.000 description 11
- 238000005259 measurement Methods 0.000 description 7
- 235000019592 roughness Nutrition 0.000 description 6
- 239000004020 conductor Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 239000002195 soluble material Substances 0.000 description 5
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- 229920003266 Leaf® Polymers 0.000 description 3
- 238000004581 coalescence Methods 0.000 description 3
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- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
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- 229910052717 sulfur Inorganic materials 0.000 description 2
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- 238000001953 recrystallisation Methods 0.000 description 1
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- 239000002904 solvent Substances 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
- G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point
- G01N25/68—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point by varying the temperature of a condensing surface
Landscapes
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Pinball Game Machines (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Gas Or Oil Filled Cable Accessories (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL12682698A IL126826A0 (en) | 1998-10-30 | 1998-10-30 | Optical hygrometers |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA200103389B true ZA200103389B (en) | 2002-07-25 |
Family
ID=11072083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA200103389A ZA200103389B (en) | 1998-10-30 | 2001-04-25 | Dew point hygrometers and dew sensors. |
Country Status (12)
Country | Link |
---|---|
US (1) | US6575621B1 (zh) |
EP (1) | EP1125115B1 (zh) |
JP (1) | JP2002529700A (zh) |
CN (2) | CN1168977C (zh) |
AT (1) | ATE331213T1 (zh) |
AU (1) | AU6486099A (zh) |
CA (1) | CA2349539A1 (zh) |
DE (1) | DE69932072D1 (zh) |
ES (1) | ES2270618T3 (zh) |
IL (1) | IL126826A0 (zh) |
WO (1) | WO2000026652A1 (zh) |
ZA (1) | ZA200103389B (zh) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7234860B2 (en) * | 2001-11-20 | 2007-06-26 | Aalborg Universitetet | Dynamic dew point analysis method and a device for determining the dew point temperature and relative humidity |
JP2004108940A (ja) * | 2002-09-18 | 2004-04-08 | National Institute Of Advanced Industrial & Technology | 光導波路を利用する露点の測定装置 |
JP4354860B2 (ja) | 2004-03-30 | 2009-10-28 | 株式会社山武 | 水分検出装置 |
GB0418555D0 (en) * | 2004-08-19 | 2004-09-22 | Michell Instr Ltd | Apparatus for measuring dew point of a gas stream |
JP4685513B2 (ja) * | 2005-05-31 | 2011-05-18 | 株式会社山武 | 鏡面冷却式センサ |
JP2007101479A (ja) * | 2005-10-07 | 2007-04-19 | Earekkusu:Kk | 凝縮センサー |
DE102006013726A1 (de) * | 2006-03-24 | 2007-09-27 | Bartec Gmbh | Verfahren und Sensor zum Bestimmen des Kohlenwasserstoff-Taupunktes in einem Gas |
DE102007052796B4 (de) * | 2007-11-02 | 2018-10-11 | Hochschule Niederrhein | Aktive faseroptische Betauungsvorrichtung |
JP5285147B2 (ja) | 2008-05-21 | 2013-09-11 | ジョン クレーン インコーポレーテッド | シール監視及び制御システム |
US9388686B2 (en) | 2010-01-13 | 2016-07-12 | Halliburton Energy Services, Inc. | Maximizing hydrocarbon production while controlling phase behavior or precipitation of reservoir impairing liquids or solids |
US9063067B1 (en) | 2010-11-17 | 2015-06-23 | Alvin P. Schmitt | Moisture sensing devices |
DE102011076220A1 (de) * | 2011-05-20 | 2012-11-22 | BSH Bosch und Siemens Hausgeräte GmbH | Trockner mit Feuchtesensor sowie Verfahren zu seinem Betrieb |
US8786860B2 (en) * | 2011-10-20 | 2014-07-22 | Schlumberger Technology Corporation | Measurement of liquid fraction dropout using micropatterned surfaces |
US8764414B2 (en) * | 2011-11-07 | 2014-07-01 | Bha Altair, Llc | System for detecting contaminants in an intake flow of a compressor |
CN111473114B (zh) | 2016-02-23 | 2022-06-17 | 约翰起重机英国有限公司 | 用于机械系统的预测诊断的系统和方法 |
JP2018173323A (ja) * | 2017-03-31 | 2018-11-08 | アズビル株式会社 | 乾き度判定装置及び乾き度判定方法 |
CN109798839B (zh) * | 2017-11-16 | 2021-04-09 | 致茂电子(苏州)有限公司 | 表面量测系统 |
CN108181345B (zh) * | 2017-11-27 | 2020-05-08 | 中国空间技术研究院 | 一种用于测试冷凝水形成的装置及方法 |
CN108872158B (zh) * | 2018-05-31 | 2020-12-29 | 京东方科技集团股份有限公司 | 湿度检测器 |
CN109239011B (zh) * | 2018-07-20 | 2024-04-30 | 华南师范大学 | 一种光纤露点湿度检测装置、系统及其控制方法 |
CN110471132B (zh) * | 2019-08-23 | 2021-06-08 | 国网山东省电力公司济南供电公司 | 在线监测户外环网柜或分支箱凝露的方法 |
CN110646471A (zh) * | 2019-09-29 | 2020-01-03 | 杭州铂得科技有限公司 | 一种微环境智能监测装置和微环境智能监测系统 |
CN112666217A (zh) * | 2020-11-10 | 2021-04-16 | 西安交通大学 | 一种电容式露点监测装置及方法 |
KR102569705B1 (ko) * | 2021-10-08 | 2023-08-24 | 에스티에이코퍼레이션 주식회사 | 매질의 상 변화 감지 센서 |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3611788A (en) * | 1969-10-08 | 1971-10-12 | Anatoly Kuzmich Amelkin | Dew-point hygrometer |
US3623356A (en) | 1969-12-18 | 1971-11-30 | Eg & G Inc | Dew point hygrometer |
US4216669A (en) | 1978-10-06 | 1980-08-12 | General Eastern Instruments Corporation | Contaminant error reduction system for dew point hygrometers |
DE3024523A1 (de) * | 1980-06-28 | 1982-01-28 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Als elektrischer kondensator ausgebildeter feuchtigkeitssensor |
DE3231995C2 (de) | 1982-08-27 | 1985-06-27 | Endress U. Hauser Gmbh U. Co, 7867 Maulburg | Verfahren und Anordnung zum Messen der Verschmutzung eines kapazitiven Taupunktsensors |
JPS6118850A (ja) * | 1984-07-06 | 1986-01-27 | Chino Works Ltd | 湿度・結露検出素子 |
DE3708697A1 (de) * | 1987-03-18 | 1988-09-29 | Draegerwerk Ag | Verfahren und anordnung zur messung des taupunktes |
DE3713864A1 (de) * | 1987-04-25 | 1988-11-17 | Hoelter Heinz | Verfahren zur genauen messung der relativen luftfeuchtigkeit |
DE3720189C1 (de) | 1987-06-16 | 1988-12-29 | Endress Hauser Gmbh Co | Taupunkt-Sensor |
EP0311939A3 (en) * | 1987-10-12 | 1990-10-17 | Nihon Parkerizing Co., Ltd. | Humidity sensor |
DE3740719A1 (de) * | 1987-12-01 | 1989-06-15 | Endress Hauser Gmbh Co | Verfahren und anordnung zur messung des wasserdampf-taupunkts in gasen |
DE3843341A1 (de) * | 1988-12-22 | 1990-06-28 | Hubert Kurz | Taupunkthygrometer fuer dampfbadekabinen |
US5024532A (en) * | 1989-05-22 | 1991-06-18 | Luxtron Corporation | Dew point measuring apparatus installation system |
GB9016425D0 (en) * | 1990-07-26 | 1990-09-12 | Protimeter Plc | Apparatus for determining the dewpoint |
SE9101259D0 (sv) * | 1991-04-25 | 1991-04-25 | Fladda Mcs Ab | Metod foer att kompensera foer ljusintensitetsfoeraendringar i ett optiskt maetgap vid bestaemning av halten suspenderat material |
US5402075A (en) | 1992-09-29 | 1995-03-28 | Prospects Corporation | Capacitive moisture sensor |
JPH06194114A (ja) * | 1992-12-22 | 1994-07-15 | Miyawaki:Kk | 静電容量センサ |
US5345821A (en) * | 1993-01-15 | 1994-09-13 | A.I.R., Inc. | Relative humidity sensing apparatus |
US5364185A (en) * | 1993-04-16 | 1994-11-15 | California Institute Of Technology | High performance miniature hygrometer and method thereof |
DE4423179A1 (de) * | 1994-07-01 | 1996-01-04 | Dirk Dr Heinze | Taupunkthygrometer mit optischem Nachweisprinzip |
JPH10508096A (ja) | 1994-08-16 | 1998-08-04 | インダストリアル リサーチ リミテッド | 露点センサ |
US5533393A (en) * | 1995-01-13 | 1996-07-09 | Honeywell Inc. | Determination of dew point or absolute humidity |
GB2298042B (en) * | 1995-02-14 | 1998-09-30 | Protimeter Plc | Dewpoint measuring apparatus |
GB9511204D0 (en) * | 1995-06-02 | 1995-07-26 | Sonander Sven O | Method and apparatus for measuring dew point temperature of a moist gas |
JP3291982B2 (ja) * | 1995-06-21 | 2002-06-17 | 松下電器産業株式会社 | 結露センサおよびそれを用いた電子機器 |
JP2000114090A (ja) * | 1998-09-30 | 2000-04-21 | Sony Corp | コンデンサおよびコンデンサ製造方法およびプリント回路板およびプリント回路板の製造方法 |
US6126311A (en) * | 1998-11-02 | 2000-10-03 | Claud S. Gordon Company | Dew point sensor using mems |
-
1998
- 1998-10-30 IL IL12682698A patent/IL126826A0/xx unknown
-
1999
- 1999-10-29 US US09/830,494 patent/US6575621B1/en not_active Expired - Fee Related
- 1999-10-29 DE DE69932072T patent/DE69932072D1/de not_active Expired - Lifetime
- 1999-10-29 ES ES99952776T patent/ES2270618T3/es not_active Expired - Lifetime
- 1999-10-29 CN CNB998139092A patent/CN1168977C/zh not_active Expired - Fee Related
- 1999-10-29 CA CA002349539A patent/CA2349539A1/en not_active Abandoned
- 1999-10-29 EP EP99952776A patent/EP1125115B1/en not_active Expired - Lifetime
- 1999-10-29 JP JP2000579982A patent/JP2002529700A/ja active Pending
- 1999-10-29 AU AU64860/99A patent/AU6486099A/en not_active Abandoned
- 1999-10-29 AT AT99952776T patent/ATE331213T1/de not_active IP Right Cessation
- 1999-10-29 WO PCT/IL1999/000571 patent/WO2000026652A1/en active IP Right Grant
- 1999-10-29 CN CN200410056221.7A patent/CN1657925A/zh active Pending
-
2001
- 2001-04-25 ZA ZA200103389A patent/ZA200103389B/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE69932072D1 (de) | 2006-08-03 |
EP1125115A1 (en) | 2001-08-22 |
WO2000026652A1 (en) | 2000-05-11 |
ATE331213T1 (de) | 2006-07-15 |
JP2002529700A (ja) | 2002-09-10 |
EP1125115B1 (en) | 2006-06-21 |
CA2349539A1 (en) | 2000-05-11 |
IL126826A0 (en) | 1999-08-17 |
CN1168977C (zh) | 2004-09-29 |
AU6486099A (en) | 2000-05-22 |
US6575621B1 (en) | 2003-06-10 |
CN1329719A (zh) | 2002-01-02 |
CN1657925A (zh) | 2005-08-24 |
ES2270618T3 (es) | 2007-04-01 |
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