FR2251811A1 - Contactless induction pickup - detects boundary between two media having different densities and conductivities - Google Patents

Contactless induction pickup - detects boundary between two media having different densities and conductivities

Info

Publication number
FR2251811A1
FR2251811A1 FR7341454A FR7341454A FR2251811A1 FR 2251811 A1 FR2251811 A1 FR 2251811A1 FR 7341454 A FR7341454 A FR 7341454A FR 7341454 A FR7341454 A FR 7341454A FR 2251811 A1 FR2251811 A1 FR 2251811A1
Authority
FR
France
Prior art keywords
media
pickup
conductivities
different densities
boundary
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.)
Granted
Application number
FR7341454A
Other languages
French (fr)
Other versions
FR2251811B1 (en
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.)
Institut Elektrosvarki Imeni E O Patona Akademii Nauk Ukrainskoi Ssr
Original Assignee
Institut Elektrosvarki Imeni E O Patona Akademii Nauk Ukrainskoi Ssr
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 Institut Elektrosvarki Imeni E O Patona Akademii Nauk Ukrainskoi Ssr filed Critical Institut Elektrosvarki Imeni E O Patona Akademii Nauk Ukrainskoi Ssr
Priority to FR7341454A priority Critical patent/FR2251811A1/en
Publication of FR2251811A1 publication Critical patent/FR2251811A1/en
Application granted granted Critical
Publication of FR2251811B1 publication Critical patent/FR2251811B1/fr
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
    • G01F23/261—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 for discrete levels

Abstract

At least one of the media is electrically conducting and non-magnetic. The pickup has output and measurement windings on an open magnetic system whose end faces, when the pickup is inserted, face the boundary between the two media. The magnetic circuit consists of two parallel bars, whose end faces lie in a plane when the pickup is inserted. Each bar carries its own measurement winding, connected in series in opposition to the other, and both bars carry a common output winding. The apparatus has high sensitivity even with small measurements. As well as measuring the apparatus can keep the media at the correct stipulated height.
FR7341454A 1973-11-21 1973-11-21 Contactless induction pickup - detects boundary between two media having different densities and conductivities Granted FR2251811A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7341454A FR2251811A1 (en) 1973-11-21 1973-11-21 Contactless induction pickup - detects boundary between two media having different densities and conductivities

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7341454A FR2251811A1 (en) 1973-11-21 1973-11-21 Contactless induction pickup - detects boundary between two media having different densities and conductivities

Publications (2)

Publication Number Publication Date
FR2251811A1 true FR2251811A1 (en) 1975-06-13
FR2251811B1 FR2251811B1 (en) 1976-05-07

Family

ID=9128051

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7341454A Granted FR2251811A1 (en) 1973-11-21 1973-11-21 Contactless induction pickup - detects boundary between two media having different densities and conductivities

Country Status (1)

Country Link
FR (1) FR2251811A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010539A1 (en) * 1978-10-25 1980-04-30 Arbed S.A. Method to measure the filling level of liquid metals in containers, especially in continuous-casting moulds
FR2448131A1 (en) * 1979-01-31 1980-08-29 Inst Elektroswarki Patona INDUCTION LIQUID METAL LEVEL SENSOR
EP0312799A1 (en) * 1987-10-21 1989-04-26 CEDA S.p.A. COSTRUZIONI ELETTROMECCANICHE E DISPOSITIVI D'AUTOMAZIONE Device to measure the level of liquid metal in a crystallizer of a continuous casting ingot mould

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010539A1 (en) * 1978-10-25 1980-04-30 Arbed S.A. Method to measure the filling level of liquid metals in containers, especially in continuous-casting moulds
FR2448131A1 (en) * 1979-01-31 1980-08-29 Inst Elektroswarki Patona INDUCTION LIQUID METAL LEVEL SENSOR
EP0312799A1 (en) * 1987-10-21 1989-04-26 CEDA S.p.A. COSTRUZIONI ELETTROMECCANICHE E DISPOSITIVI D'AUTOMAZIONE Device to measure the level of liquid metal in a crystallizer of a continuous casting ingot mould

Also Published As

Publication number Publication date
FR2251811B1 (en) 1976-05-07

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Legal Events

Date Code Title Description
ST Notification of lapse