JP2930340B2 - コーティング感応物質条件監視システム - Google Patents

コーティング感応物質条件監視システム

Info

Publication number
JP2930340B2
JP2930340B2 JP1510850A JP51085089A JP2930340B2 JP 2930340 B2 JP2930340 B2 JP 2930340B2 JP 1510850 A JP1510850 A JP 1510850A JP 51085089 A JP51085089 A JP 51085089A JP 2930340 B2 JP2930340 B2 JP 2930340B2
Authority
JP
Japan
Prior art keywords
sensor
substance
output
bridge
level
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
Application number
JP1510850A
Other languages
English (en)
Japanese (ja)
Other versions
JPH04501770A (ja
Inventor
エル． マルトビー，フレドリック
クラマー，エル．ジョナサン
アール． ピーターソン，スティーブン
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DOREKUSERUBURUTSUKU KONTOROORUSU Inc
Original Assignee
DOREKUSERUBURUTSUKU KONTOROORUSU Inc
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 DOREKUSERUBURUTSUKU KONTOROORUSU Inc filed Critical DOREKUSERUBURUTSUKU KONTOROORUSU Inc
Publication of JPH04501770A publication Critical patent/JPH04501770A/ja
Application granted granted Critical
Publication of JP2930340B2 publication Critical patent/JP2930340B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
    • G01F23/266—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors measuring circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
JP1510850A 1988-08-25 1989-08-25 コーティング感応物質条件監視システム Expired - Lifetime JP2930340B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US23690488A 1988-08-25 1988-08-25
US236,904 1988-08-25
PCT/US1989/003694 WO1990002319A1 (en) 1988-08-25 1989-08-25 Coating-responsive material condition monitoring system

Publications (2)

Publication Number Publication Date
JPH04501770A JPH04501770A (ja) 1992-03-26
JP2930340B2 true JP2930340B2 (ja) 1999-08-03

Family

ID=22891481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1510850A Expired - Lifetime JP2930340B2 (ja) 1988-08-25 1989-08-25 コーティング感応物質条件監視システム

Country Status (5)

Country Link
JP (1) JP2930340B2 (enExample)
CA (1) CA1338881C (enExample)
DE (1) DE3990989T (enExample)
GB (1) GB2247529B (enExample)
WO (1) WO1990002319A1 (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2351901B (en) * 1999-07-14 2001-06-27 Earth Anchors Ltd A bench
KR100434930B1 (ko) * 2001-03-07 2004-06-14 박경래 양궁용 안정기의 보강장치
DE102007049526A1 (de) * 2007-10-15 2009-04-16 Endress + Hauser Gmbh + Co. Kg Vorrichtung zur Bestimmung und/oder Überwachung einer Prozessgröße
SE541463C2 (sv) * 2017-10-06 2019-10-08 Sealwacs Ab Plastsvetssensor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635094A (en) 1969-09-06 1972-01-18 Greiner Electronic Ag Automatic transfer pipette means

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4800755A (en) * 1982-08-25 1989-01-31 Berwind Corporation Capacitance-type material level indicator
US4686857A (en) * 1983-03-04 1987-08-18 Kabushiki Kaisha Toyota Chuo Kenkyusho Method and apparatus for evaluating the performance of dielectric substances
US4624139A (en) * 1984-09-21 1986-11-25 Berwind Corporation Capacitance-type material level indicator
US4676100A (en) * 1984-10-31 1987-06-30 Berwind Corporation Capacitance-type material level indicator
US4638305A (en) * 1985-03-22 1987-01-20 General Motors Corporation Apparatus for detecting water in fuel
DE3537129C2 (de) * 1985-10-18 1996-06-13 Crostack Horst Artur Prof Dr I Verfahren und Vorrichtung zur zerstörungsfreien Werkstoffprüfung, insbesondere zur Dickenbestimmung
US4757252A (en) * 1985-10-25 1988-07-12 Drexelbrook Controls, Inc. Probe system for measuring the condition of materials
US4723122A (en) * 1985-10-25 1988-02-02 Drexelbrook Controls, Inc. Remotely calibratable instrument system
US4676101A (en) * 1986-09-03 1987-06-30 Walbro Corporation Capacitance-type material level indicator
US4749988A (en) * 1986-11-20 1988-06-07 Imtec Products, Inc. Non-invasive liquid level sensor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635094A (en) 1969-09-06 1972-01-18 Greiner Electronic Ag Automatic transfer pipette means

Also Published As

Publication number Publication date
DE3990989T (enExample) 1992-01-30
GB2247529B (en) 1993-04-14
WO1990002319A1 (en) 1990-03-08
CA1338881C (en) 1997-01-28
JPH04501770A (ja) 1992-03-26
GB2247529A (en) 1992-03-04
GB9103868D0 (en) 1991-05-15

Similar Documents

Publication Publication Date Title
US5539670A (en) Coating responsive material condition monitoring system
US4485673A (en) Two-wire level measuring instrument
US5049878A (en) Two-wire compensated level measuring instrument
KR100219020B1 (ko) 3선저전력전송기
US4157506A (en) Flame detector
US4799174A (en) Multiple set point condition monitoring systems
CN1268219A (zh) 容性液面传感器
US4499766A (en) Capacitance-type material level indicator
US4676100A (en) Capacitance-type material level indicator
US4788488A (en) Continuous condition sensing system
US6112579A (en) Fluid leakage sensors
CA2016886A1 (en) Correction procedure of the phase difference introduced by a zero sequence measurement toroid of a leakage current and isolation monitor implementing this procedure
US5287062A (en) Reference voltage measuring bridge for a device for monitoring and measuring the insulation of a DC voltage electrical mains system
JPS59148998A (ja) 加工装置のための中央制御兼モニタ装置への入力回路の動作をモニタする装置
CA1338881C (en) Coating-responsive condition monitoring system
US4459856A (en) CMOS Bridge for capacitive pressure transducers
WO2020068710A1 (en) A system for monitoring a thickness of one or more assets using an ultrasonic measurement system, a multiplexer switch module and a two-conductor connection, and a method of performing the same
US4950998A (en) Continuous condition sensing system
US4851831A (en) Two-wire level measuring instrument
US5045797A (en) Continuous condition sensing system determining liquid level by admittance measurement
IE61520B1 (en) Arrangement for capactive filling level measurement
US6498501B2 (en) Measuring circuit
CN201251468Y (zh) 两线制防挂料连续射频导纳控制器
US10101190B2 (en) Field device electronics for a conductive limit-level switch
US4746911A (en) Alarm device for isolated pipe systems