FI74540C - System och anordning foer maetning av en vaetskas hoejdnivao. - Google Patents

System och anordning foer maetning av en vaetskas hoejdnivao. Download PDF

Info

Publication number
FI74540C
FI74540C FI834873A FI834873A FI74540C FI 74540 C FI74540 C FI 74540C FI 834873 A FI834873 A FI 834873A FI 834873 A FI834873 A FI 834873A FI 74540 C FI74540 C FI 74540C
Authority
FI
Finland
Prior art keywords
coil
electromagnetic field
electrode
electrodes
electrically conductive
Prior art date
Application number
FI834873A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI74540B (fi
FI834873L (fi
FI834873A0 (fi
Inventor
Graham Peter Sealey
Andrew Cedric Corney
Original Assignee
Tru Test Distributors Ltd
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 Tru Test Distributors Ltd filed Critical Tru Test Distributors Ltd
Publication of FI834873A0 publication Critical patent/FI834873A0/fi
Publication of FI834873L publication Critical patent/FI834873L/fi
Application granted granted Critical
Publication of FI74540B publication Critical patent/FI74540B/fi
Publication of FI74540C publication Critical patent/FI74540C/fi

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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
FI834873A 1982-12-31 1983-12-30 System och anordning foer maetning av en vaetskas hoejdnivao. FI74540C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ201498A NZ201498A (en) 1982-12-31 1982-12-31 Liquid level measured by induction field of shortable solenoid
NZ20149882 1982-12-31

Publications (4)

Publication Number Publication Date
FI834873A0 FI834873A0 (fi) 1983-12-30
FI834873L FI834873L (fi) 1984-07-01
FI74540B FI74540B (fi) 1987-10-30
FI74540C true FI74540C (fi) 1988-02-08

Family

ID=19920053

Family Applications (1)

Application Number Title Priority Date Filing Date
FI834873A FI74540C (fi) 1982-12-31 1983-12-30 System och anordning foer maetning av en vaetskas hoejdnivao.

Country Status (19)

Country Link
US (1) US4554831A (enExample)
JP (1) JPS59136623A (enExample)
AU (1) AU567529B2 (enExample)
BE (1) BE898582A (enExample)
CA (1) CA1208453A (enExample)
DD (1) DD216793A5 (enExample)
DE (1) DE3347606A1 (enExample)
DK (1) DK608783A (enExample)
FI (1) FI74540C (enExample)
FR (1) FR2538900B1 (enExample)
GB (1) GB2134264B (enExample)
HU (1) HU189801B (enExample)
IE (1) IE54949B1 (enExample)
IT (1) IT1171898B (enExample)
NL (1) NL8304488A (enExample)
NO (1) NO159420C (enExample)
NZ (1) NZ201498A (enExample)
SE (1) SE8307204L (enExample)
ZA (1) ZA839692B (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716536A (en) * 1985-04-16 1987-12-29 The Foxboro Company Measurement calibration
US4827769A (en) * 1988-09-16 1989-05-09 Hamilton Standard Controls, Inc. Fuel level sensor with buried conductor
JPH0324425A (ja) * 1989-06-20 1991-02-01 Murata Mfg Co Ltd 変位量計測装置
CA2947598C (en) * 2014-05-08 2018-09-18 WellGauge, Inc. Well water depth monitor
GB2570323B (en) * 2018-01-19 2020-08-12 Paul Clarkson Melvin Permittivity based fluid level sensor wherein build-up of fluid vapour droplets is prevented

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1243891B (de) * 1964-04-06 1967-07-06 Euratom Geraet zum kontinuierlichen Messen des Fluessigkeitsstandes elektrisch leitfaehiger Fluessigkeiten
US3349617A (en) * 1965-01-12 1967-10-31 Hartstone John Lewis Metering and flow indicating device for use during milking
AU1185670A (en) * 1969-02-27 1971-08-26 The Commonwealth Industrial Gases Limited Cryogenic liquid level indicator
US3722281A (en) * 1970-11-04 1973-03-27 Eng Physics Co Liquid height gauge
US3755804A (en) * 1971-10-18 1973-08-28 W Johnson Liquid level sensing system and apparatus
DE2210296C2 (de) * 1972-03-03 1983-10-20 Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach Füllstandsmeßgerät zur kontinuierlichen Messung für elektrisch leitende Flüssigkeiten
DE7333074U (de) * 1973-09-12 1975-06-26 Interatom Int Atomreaktorbau Gmbh Kontinuierlicher Füllstandsmesser für elektrisch leitende Flüssigkeiten
US4125021A (en) * 1976-06-01 1978-11-14 Doryokuro Kakunenryo Kaihatsu Jigyodan Apparatus for detecting conductive liquid level
GB2062238A (en) * 1979-10-15 1981-05-20 Ponting I M An impedance measuring system

Also Published As

Publication number Publication date
AU567529B2 (en) 1987-11-26
IE54949B1 (en) 1990-03-28
IT8349591A0 (it) 1983-12-27
SE8307204L (sv) 1984-07-01
DD216793A5 (de) 1984-12-19
DK608783A (da) 1984-07-01
DE3347606C2 (enExample) 1988-12-15
NZ201498A (en) 1987-11-27
IT8349591A1 (it) 1985-06-27
US4554831A (en) 1985-11-26
SE8307204D0 (sv) 1983-12-29
ZA839692B (en) 1984-08-29
JPS59136623A (ja) 1984-08-06
NO159420B (no) 1988-09-12
GB2134264B (en) 1986-03-05
GB2134264A (en) 1984-08-08
CA1208453A (en) 1986-07-29
IT1171898B (it) 1987-06-10
NL8304488A (nl) 1984-07-16
FI74540B (fi) 1987-10-30
DK608783D0 (da) 1983-12-30
DE3347606A1 (de) 1984-07-12
GB8334576D0 (en) 1984-02-01
IE833058L (en) 1984-06-30
FR2538900A1 (fr) 1984-07-06
FR2538900B1 (fr) 1988-03-18
AU2277083A (en) 1984-07-05
FI834873L (fi) 1984-07-01
NO834879L (no) 1984-07-02
HU189801B (en) 1986-08-28
BE898582A (fr) 1984-04-16
FI834873A0 (fi) 1983-12-30
NO159420C (no) 1988-12-21

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MM Patent lapsed

Owner name: TRU TEST DISTRIBUTORS LIMITED