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SE460740B - Foerfarande och anordning foer maetning av nedsmutsningen av en kapacitiv daggpunktsgivare - Google Patents

Foerfarande och anordning foer maetning av nedsmutsningen av en kapacitiv daggpunktsgivare

Info

Publication number
SE460740B
SE460740B SE8304613A SE8304613A SE460740B SE 460740 B SE460740 B SE 460740B SE 8304613 A SE8304613 A SE 8304613A SE 8304613 A SE8304613 A SE 8304613A SE 460740 B SE460740 B SE 460740B
Authority
SE
Sweden
Prior art keywords
dew point
impedance
sensor
point sensor
dew
Prior art date
Application number
SE8304613A
Other languages
English (en)
Swedish (sv)
Other versions
SE8304613L (sv
SE8304613D0 (sv
Inventor
P P L Regtien
Original Assignee
Endress Hauser Gmbh Co
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 Endress Hauser Gmbh Co filed Critical Endress Hauser Gmbh Co
Publication of SE8304613D0 publication Critical patent/SE8304613D0/xx
Publication of SE8304613L publication Critical patent/SE8304613L/
Publication of SE460740B publication Critical patent/SE460740B/sv

Links

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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pathology (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
SE8304613A 1982-08-27 1983-08-25 Foerfarande och anordning foer maetning av nedsmutsningen av en kapacitiv daggpunktsgivare SE460740B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3231995A DE3231995C2 (de) 1982-08-27 1982-08-27 Verfahren und Anordnung zum Messen der Verschmutzung eines kapazitiven Taupunktsensors

Publications (3)

Publication Number Publication Date
SE8304613D0 SE8304613D0 (sv) 1983-08-25
SE8304613L SE8304613L (sv) 1984-04-18
SE460740B true SE460740B (sv) 1989-11-13

Family

ID=6171900

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8304613A SE460740B (sv) 1982-08-27 1983-08-25 Foerfarande och anordning foer maetning av nedsmutsningen av en kapacitiv daggpunktsgivare

Country Status (9)

Country Link
US (1) US4626774A (de)
JP (1) JPS5985949A (de)
CH (1) CH661986A5 (de)
DE (1) DE3231995C2 (de)
FR (1) FR2532427B1 (de)
GB (1) GB2127975B (de)
IT (1) IT1159590B (de)
NL (1) NL8302753A (de)
SE (1) SE460740B (de)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446277A1 (de) * 1984-12-19 1986-06-19 Forschungsinstitut Prof. Dr.-Ing.habil, Dr.phil.nat. Karl Otto Lehmann, Nachf. GmbH & Cie, 7570 Baden-Baden Messwertaufnehmer zur messung des taupunkts
JPH0646186B2 (ja) * 1985-12-12 1994-06-15 株式会社日本自動車部品総合研究所 水滴検出装置
GB8602742D0 (en) * 1986-02-04 1986-03-12 Mestra Ag Capacitive sensor circuit
DE3633015A1 (de) * 1986-09-29 1988-04-07 Draegerwerk Ag Verfahren und anordnung zur messung des taupunktes
CH672957A5 (de) * 1987-03-16 1990-01-15 Novasina Ag
DE3708697A1 (de) * 1987-03-18 1988-09-29 Draegerwerk Ag Verfahren und anordnung zur messung des taupunktes
DE3720189C1 (de) * 1987-06-16 1988-12-29 Endress Hauser Gmbh Co Taupunkt-Sensor
DE3740719A1 (de) * 1987-12-01 1989-06-15 Endress Hauser Gmbh Co Verfahren und anordnung zur messung des wasserdampf-taupunkts in gasen
FI82554C (fi) * 1988-11-02 1991-03-11 Vaisala Oy Kalibreringsfoerfarande foer maetning av den relativa halten av gas eller aonga.
US5121068A (en) * 1989-12-26 1992-06-09 Emhart Industries, Inc. Sensor for sensing the wall thickness of an object
US5072190A (en) * 1990-08-14 1991-12-10 The Foxboro Company Pressure sensing device having fill fluid contamination detector
DE4116322C2 (de) * 1991-05-16 1998-08-06 Ct Fuer Intelligente Sensorik Vorrichtung zur Messung der Taupunkttemperatur und der Betauung
IT1251318B (it) * 1991-09-13 1995-05-08 Ente Naz Energia Elettrica Apparecchiatura per controllare lo stato di contaminazione di isolatori elettrici
US5365784A (en) * 1992-04-30 1994-11-22 The United States Of America As Represented By The Secretary Of The Air Force Humidity sensing apparatus and method
DE4305934B4 (de) * 1993-02-26 2004-09-30 CiS Institut für Mikrosensorik gGmbH Anordnung von Sensoren zur Messung der Luftfeuchte
US5364185A (en) * 1993-04-16 1994-11-15 California Institute Of Technology High performance miniature hygrometer and method thereof
EP0790479B1 (de) 1996-02-14 2002-01-16 STMicroelectronics S.r.l. Kapazitiver Abstandssensor, insbesondere zur Erfassung von Fingerabdrücken
US6114862A (en) 1996-02-14 2000-09-05 Stmicroelectronics, Inc. Capacitive distance sensor
US6320394B1 (en) * 1996-02-14 2001-11-20 Stmicroelectronics S.R.L. Capacitive distance sensor
US5809826A (en) * 1996-07-29 1998-09-22 Baker, Jr.; Hugh M. Inferential condensation sensor
US5764065A (en) * 1996-09-20 1998-06-09 Richards; Clyde N. Remote contamination sensing device for determining contamination on insulation of power lines and substations
DE19708053B4 (de) * 1997-02-28 2006-06-08 Ust Umweltsensortechnik Gmbh Verfahren und Sensoranordnung zur Dedektion von Kondensationen an Oberflächen
US6566893B2 (en) 1997-02-28 2003-05-20 Ust Umweltsensortechnik Gmbh Method and arrangement for monitoring surfaces for the presence of dew
US6483931B2 (en) 1997-09-11 2002-11-19 Stmicroelectronics, Inc. Electrostatic discharge protection of a capacitve type fingerprint sensing array
US6191593B1 (en) * 1997-12-17 2001-02-20 Stmicroelectronics, Inc. Method for the non-invasive sensing of physical matter on the detection surface of a capacitive sensor
US6091082A (en) 1998-02-17 2000-07-18 Stmicroelectronics, Inc. Electrostatic discharge protection for integrated circuit sensor passivation
US6926439B2 (en) 1998-10-30 2005-08-09 Optiguide Ltd. Dew point hygrometers and dew sensors
IL126826A0 (en) 1998-10-30 1999-08-17 Optiguide Ltd Optical hygrometers
US6512381B2 (en) 1999-12-30 2003-01-28 Stmicroelectronics, Inc. Enhanced fingerprint detection
US7239227B1 (en) 1999-12-30 2007-07-03 Upek, Inc. Command interface using fingerprint sensor input system
US6906530B2 (en) * 2002-05-30 2005-06-14 D.J. Geisel Technology, Inc. Apparatus and method to detect moisture
NL1021400C2 (nl) * 2002-09-05 2004-03-08 Tno Werkwijze en inrichting voor het bepalen van een faseovergang van een stof.
AU2003902836A0 (en) * 2003-06-06 2003-06-26 M.B.T.L. Limited Environmental sensor
DE102004005353B4 (de) 2004-02-03 2016-08-11 CiS Forschungsinstitut für Mikrosensorik GmbH Verfahren zur Bestimmung der Parameter von Gasen
JP4229885B2 (ja) * 2004-08-18 2009-02-25 株式会社デンソー 容量式物理量検出装置
GB2419415A (en) * 2004-09-20 2006-04-26 Bioquell Uk Ltd Sterilisation sensor
US8115497B2 (en) * 2007-11-13 2012-02-14 Authentec, Inc. Pixel sensing circuit with common mode cancellation
DE102007047888A1 (de) * 2007-11-28 2009-08-13 Sitronic Gesellschaft für elektrotechnische Ausrüstung mbH. & Co. KG Sensoranordnung
US9063067B1 (en) 2010-11-17 2015-06-23 Alvin P. Schmitt Moisture sensing devices

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435895A (en) * 1943-06-24 1948-02-10 Oran T Mciivaine Dew point detector
DE1813333A1 (de) * 1968-12-07 1970-06-11 Leybold Heraeus Gmbh & Co Kg Verfahren zur Messung der Schichtdicke eines Metallbelages auf einer Isolierstoffbahn
US3664192A (en) * 1969-09-08 1972-05-23 Univ Utah State Dew point hygrometers
US3778707A (en) * 1972-12-14 1973-12-11 Agridustrial Electronics Means for measuring loss tangent of material for determining moisture content
CA1020631A (en) * 1974-03-04 1977-11-08 Edward I. Parker Control and gauging method and apparatus using locked oscillators
US4216669A (en) * 1978-10-06 1980-08-12 General Eastern Instruments Corporation Contaminant error reduction system for dew point hygrometers
US4272986A (en) * 1979-04-16 1981-06-16 Harris Corporation Method and means for measuring moisture content of hermetic semiconductor devices
JPS5731102A (en) * 1980-08-01 1982-02-19 Tokyo Shibaura Electric Co Moisture sensitive element
JPS57111566A (en) * 1980-12-29 1982-07-12 Fujitsu Ltd Detecting circuit for toner density
NL8101310A (nl) * 1981-03-18 1982-10-18 Skf Ind Trading & Dev Inrichting voor het meten van de variatie van een capacitieve impedantie, waarvan het dielektricum wordt gevormd door een smeermiddel.

Also Published As

Publication number Publication date
IT1159590B (it) 1987-03-04
FR2532427A1 (fr) 1984-03-02
JPH0260141B2 (de) 1990-12-14
SE8304613L (sv) 1984-04-18
GB2127975A (en) 1984-04-18
CH661986A5 (de) 1987-08-31
GB2127975B (en) 1985-11-13
FR2532427B1 (fr) 1986-01-31
DE3231995A1 (de) 1984-03-01
DE3231995C2 (de) 1985-06-27
US4626774A (en) 1986-12-02
IT8367893A0 (it) 1983-08-25
SE8304613D0 (sv) 1983-08-25
GB8323158D0 (en) 1983-09-28
JPS5985949A (ja) 1984-05-18
NL8302753A (nl) 1984-03-16

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