JPH0325728B2 - - Google Patents

Info

Publication number
JPH0325728B2
JPH0325728B2 JP1121319A JP12131989A JPH0325728B2 JP H0325728 B2 JPH0325728 B2 JP H0325728B2 JP 1121319 A JP1121319 A JP 1121319A JP 12131989 A JP12131989 A JP 12131989A JP H0325728 B2 JPH0325728 B2 JP H0325728B2
Authority
JP
Japan
Prior art keywords
probe
conductive
coating layer
layer
probe device
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
JP1121319A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0271119A (ja
Inventor
Eru Marutobii Furederitsuku
Emu Rooensutaan Keniisu
Jii Beningu Junia Jatsuku
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 JPH0271119A publication Critical patent/JPH0271119A/ja
Publication of JPH0325728B2 publication Critical patent/JPH0325728B2/ja
Granted 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Measuring Leads Or Probes (AREA)
JP1121319A 1979-09-06 1989-05-15 導電性物質の存在を検出するためのプローブ装置 Granted JPH0271119A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/072,833 US4301681A (en) 1979-09-06 1979-09-06 Method of using capacitor probe with a semiconductive electrode
US72833 1987-07-13

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP12394280A Division JPS5696221A (en) 1979-09-06 1980-09-06 Probe

Publications (2)

Publication Number Publication Date
JPH0271119A JPH0271119A (ja) 1990-03-09
JPH0325728B2 true JPH0325728B2 (en]) 1991-04-08

Family

ID=22110027

Family Applications (2)

Application Number Title Priority Date Filing Date
JP12394280A Granted JPS5696221A (en) 1979-09-06 1980-09-06 Probe
JP1121319A Granted JPH0271119A (ja) 1979-09-06 1989-05-15 導電性物質の存在を検出するためのプローブ装置

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP12394280A Granted JPS5696221A (en) 1979-09-06 1980-09-06 Probe

Country Status (4)

Country Link
US (1) US4301681A (en])
JP (2) JPS5696221A (en])
DE (1) DE3033343A1 (en])
GB (1) GB2060893B (en])

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4301681A (en) * 1979-09-06 1981-11-24 Drexelbrook Controls, Inc. Method of using capacitor probe with a semiconductive electrode
NO154648C (no) * 1984-03-05 1986-11-19 Skand Instr As Sensorelement for kapasitivt nivaamaalesystem.
FI82756B (fi) * 1989-06-05 1990-12-31 Ahlstroem Oy Foerfarande och apparatur foer manoevrering av funktionen av en centrifugalpump.
US5316035A (en) * 1993-02-19 1994-05-31 Fluoroware, Inc. Capacitive proximity monitoring device for corrosive atmosphere environment
US5661251A (en) * 1995-12-19 1997-08-26 Endress + Hauser Gmbh + Co. Sensor apparatus for process measurement
US6118282A (en) * 1995-12-19 2000-09-12 Endress & Hauser Gmbh & Co. Sensor apparatus
US5827985A (en) * 1995-12-19 1998-10-27 Endress + Hauser Gmbh + Co. Sensor apparatus for process measurement
US6386055B1 (en) 1998-01-06 2002-05-14 Endress +Hauser Gmbh +Co. Sensor apparatus for transmitting electrical pulses from a signal line into and out of a vessel to measure a process variable—in order to be more informative
US6078280A (en) * 1998-01-09 2000-06-20 Endress + Hauser Gmbh + Co. Periodic probe mapping
US5973637A (en) * 1998-01-09 1999-10-26 Endress + Hauser Gmbh + Co. Partial probe mapping
US6250153B1 (en) 1998-07-06 2001-06-26 Sensor Measurement Technology Continuous, non-metallic, media sensors for corrosive environments
US6559657B1 (en) 1999-01-13 2003-05-06 Endress+Hauser Gmbh+Co. Probe mapping diagnostic methods
DE19938270A1 (de) * 1999-08-12 2001-02-15 Abb Research Ltd Kapazitiver Füllstandssensor mit Dielektrischer Beschichtung
US6938479B2 (en) * 2002-08-12 2005-09-06 Randy Val Carpenter Sensing device for measuring volume, position, or mass of matter
DE102005042646A1 (de) * 2005-09-07 2007-03-08 Endress + Hauser Gmbh + Co. Kg Vorrichtung zur Ermittlung und Überwachung des Füllstandes eines Mediums in einem Behälter
DE102007059669A1 (de) * 2007-12-10 2009-06-25 Endress + Hauser Gmbh + Co. Kg Vorrichtung zur Bestimmung und/oder Überwachung des Füllstandes eines Mediums
US20110231127A1 (en) * 2008-11-28 2011-09-22 Ametek, Inc. Apparatus for High Precision Measurement of Varied Surface and Material Levels
JP7177482B2 (ja) * 2019-02-08 2022-11-24 株式会社タンジ製作所 液面レベル測定装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR423695A (fr) * 1909-12-17 1911-04-24 Societe Internationale D Eclairage Par Le Gaz D Hu Robinet d'allumage pour les lampes des voitures de chemins de fer, avec réserve de gaz et flamme d'allumage permanente, réduite pendant la combustion de la flamme principale
US2955466A (en) * 1955-12-01 1960-10-11 Robertshaw Fulton Controls Co Test probe
US3049584A (en) * 1959-02-10 1962-08-14 Anaconda Wire & Cable Co High voltage shielding composition
US3096210A (en) * 1959-04-17 1963-07-02 Cabot Corp Insulated conductors and method of making same
US3166688A (en) * 1962-11-14 1965-01-19 Ronald P Rowand Polytetrafluoroethylene tubing having electrically conductive properties
US3184967A (en) * 1962-11-14 1965-05-25 Elmer B Rogers Electric charge flow meter
US3339412A (en) * 1965-10-18 1967-09-05 Frederick L Maltby Capacitance measuring apparatus
US3706980A (en) * 1970-04-27 1972-12-19 Drexelbrook Controls Rf system for measuring the level of materials
US3746975A (en) * 1971-08-20 1973-07-17 Drexelbrook Controls Measuring characteristics of materials by using susceptive and conductive components of admittance
US4064753A (en) * 1974-12-12 1977-12-27 Drexelbrook Controls, Inc. RF admittance measuring method and apparatus for determining the level of a conductive liquid
US3988668A (en) * 1975-10-17 1976-10-26 Robertshaw Controls Company Antistatic capacitance probe
US4196464A (en) * 1978-02-23 1980-04-01 Eaton Corporation Semi-conductive layer-containing reinforced pressure hose and method of making same
US4301681A (en) * 1979-09-06 1981-11-24 Drexelbrook Controls, Inc. Method of using capacitor probe with a semiconductive electrode

Also Published As

Publication number Publication date
DE3033343A1 (de) 1981-03-26
GB2060893B (en) 1984-05-02
GB2060893A (en) 1981-05-07
JPH0141927B2 (en]) 1989-09-08
US4301681A (en) 1981-11-24
JPH0271119A (ja) 1990-03-09
JPS5696221A (en) 1981-08-04

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