BR9907347A - Método para detectar a condição de um fluido em um sistema fluido - Google Patents

Método para detectar a condição de um fluido em um sistema fluido

Info

Publication number
BR9907347A
BR9907347A BR9907347-1A BR9907347A BR9907347A BR 9907347 A BR9907347 A BR 9907347A BR 9907347 A BR9907347 A BR 9907347A BR 9907347 A BR9907347 A BR 9907347A
Authority
BR
Brazil
Prior art keywords
fluid
measured
current
frequency
analog
Prior art date
Application number
BR9907347-1A
Other languages
English (en)
Inventor
Robert Alexander Bauer
Richard Walter Hirthe
Mark Henry Polczynski
Martin A Seitz
James Edward Hansen
Original Assignee
Eaton Corp
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 Eaton Corp filed Critical Eaton Corp
Publication of BR9907347A publication Critical patent/BR9907347A/pt

Links

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
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • 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
    • G01N27/221—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance by investigating the dielectric properties
    • 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
    • G01N33/26—Oils; Viscous liquids; Paints; Inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G01N33/2888—Lubricating oil characteristics, e.g. deterioration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Electrochemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

"MéTODO PARA DETECTAR A CONDIçãO DE UM FLUIDO EM UM SISTEMA FLUIDO". Um monitor de condição de fluido adequado para monitoramento em tempo real de um fluido em um sistema fluido tal como monitoramento a bordo de veículo de óleo do motor e fluido da transmissão para determinar contaminação. Uma sonda capacitiva de eletrodos de disposição espaçados é imersa no fluido e uma voltagem oscilante é aplicada em uma primeira frequência hertziana e a corrente I~ B~ medida como uma análoga da impiedância aparente do fluido. A voltagem é também aplicada à sonda em uma segunda frequência subhertziana e a corrente I~ S~ medida como uma análoga da impiedância da superfície de eletrodo. A diferença em correntes medidas ) 3 é determinada eletricamente comparada com um valor limite pré-determinado; e, a medida corrente de primeira frequência I~ B~ é comparada com um valor de limite superior e inferior para I~ B~ determinada empiricamente para o fluido linha base conhecido. Se ) 3 estiver abaixo do limite ou I~ B~ não estiver dentro dos limites superior e inferior, uma condição de falha é declarada e um indicador é ativado para alertar que o fluido não está adequado para operação continuada do sistema. Uma configuração alternativa inclui um sensor de nível de fluido.
BR9907347-1A 1998-12-23 1999-12-22 Método para detectar a condição de um fluido em um sistema fluido BR9907347A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/220,556 US6278281B1 (en) 1998-12-23 1998-12-23 Fluid condition monitor

Publications (1)

Publication Number Publication Date
BR9907347A true BR9907347A (pt) 2000-08-29

Family

ID=22824012

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9907347-1A BR9907347A (pt) 1998-12-23 1999-12-22 Método para detectar a condição de um fluido em um sistema fluido

Country Status (10)

Country Link
US (1) US6278281B1 (pt)
EP (1) EP1014082B1 (pt)
JP (1) JP2000193619A (pt)
KR (1) KR20000048376A (pt)
CN (2) CN1576833A (pt)
AT (1) ATE290206T1 (pt)
BR (1) BR9907347A (pt)
CA (1) CA2293049C (pt)
DE (1) DE69923937T2 (pt)
ES (1) ES2237024T3 (pt)

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Also Published As

Publication number Publication date
DE69923937D1 (de) 2005-04-07
CA2293049A1 (en) 2000-06-23
CN1576833A (zh) 2005-02-09
KR20000048376A (ko) 2000-07-25
ES2237024T3 (es) 2005-07-16
CN1192229C (zh) 2005-03-09
ATE290206T1 (de) 2005-03-15
DE69923937T2 (de) 2006-04-06
EP1014082A2 (en) 2000-06-28
EP1014082B1 (en) 2005-03-02
US6278281B1 (en) 2001-08-21
CA2293049C (en) 2004-05-25
CN1258002A (zh) 2000-06-28
JP2000193619A (ja) 2000-07-14
EP1014082A3 (en) 2001-02-07

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 9A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1990 DE 25/02/2009.