SE8505813D0 - DEVICE FOR DETECTING THE SLAUGHTER LEVEL IN A METAL BATH - Google Patents

DEVICE FOR DETECTING THE SLAUGHTER LEVEL IN A METAL BATH

Info

Publication number
SE8505813D0
SE8505813D0 SE8505813A SE8505813A SE8505813D0 SE 8505813 D0 SE8505813 D0 SE 8505813D0 SE 8505813 A SE8505813 A SE 8505813A SE 8505813 A SE8505813 A SE 8505813A SE 8505813 D0 SE8505813 D0 SE 8505813D0
Authority
SE
Sweden
Prior art keywords
antenna
probe
hum
detecting
slag
Prior art date
Application number
SE8505813A
Other languages
Swedish (sv)
Other versions
SE455820B (en
SE8505813L (en
Inventor
H Hegglund
Original Assignee
Geotronics Metaltech Ab
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 Geotronics Metaltech Ab filed Critical Geotronics Metaltech Ab
Priority to SE8505813A priority Critical patent/SE455820B/en
Publication of SE8505813D0 publication Critical patent/SE8505813D0/en
Priority to GB08629268A priority patent/GB2183849A/en
Priority to JP61293335A priority patent/JPS62174313A/en
Priority to DE19863641987 priority patent/DE3641987A1/en
Priority to IT22613/86A priority patent/IT1199720B/en
Publication of SE8505813L publication Critical patent/SE8505813L/en
Publication of SE455820B publication Critical patent/SE455820B/en

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
    • 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
    • G01F23/28—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 the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

A device for detecting the slag level in a molten bath comprises a measurement probe (2) provided on the probe with an antenna (8) for picking up hum in particular mains hum, in the vicinity of the antenna. A hum detector is connected to the antenna (8). Antenna (8) may be an exposed metal rod (as shown) protruding from the end of the probe (2) or it may be constituted by the wires of a temperature measuring thermocouple. The hum detector is arranged to compare the signal picked up by the antenna as it is moved by stepping motor (3) with constant velocity towards molten bath (1) with an alternating voltage related to the mains frequency only at the zero crossings of the alternating voltage. If the antenna signal and alternating voltage correspond with each other during a predetermined number of zero crossings an output is produced indicating mechanical contact of antenna (8) with the slag layer and which causes stepping motor (3) to stop. The number of steps moved is indicative of the slag level. The probe may include an inductor for detecting conventionally slag/metal interface. <IMAGE>
SE8505813A 1985-12-09 1985-12-09 DEVICE FOR DETECTING THE SLAUGHTER LEVEL IN A METAL BATH SE455820B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE8505813A SE455820B (en) 1985-12-09 1985-12-09 DEVICE FOR DETECTING THE SLAUGHTER LEVEL IN A METAL BATH
GB08629268A GB2183849A (en) 1985-12-09 1986-12-08 Device for the detection of slag level in a molten metal bath
JP61293335A JPS62174313A (en) 1985-12-09 1986-12-09 Apparatus for detecting slag level of molten metal bath
DE19863641987 DE3641987A1 (en) 1985-12-09 1986-12-09 DEVICE FOR DETERMINING THE SLUME HEIGHT IN A METAL MELT
IT22613/86A IT1199720B (en) 1985-12-09 1986-12-09 DEVICE FOR THE DETECTION OF THE SLAG LEVEL IN A MELTED METAL BATH

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8505813A SE455820B (en) 1985-12-09 1985-12-09 DEVICE FOR DETECTING THE SLAUGHTER LEVEL IN A METAL BATH

Publications (3)

Publication Number Publication Date
SE8505813D0 true SE8505813D0 (en) 1985-12-09
SE8505813L SE8505813L (en) 1987-06-10
SE455820B SE455820B (en) 1988-08-08

Family

ID=20362398

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8505813A SE455820B (en) 1985-12-09 1985-12-09 DEVICE FOR DETECTING THE SLAUGHTER LEVEL IN A METAL BATH

Country Status (5)

Country Link
JP (1) JPS62174313A (en)
DE (1) DE3641987A1 (en)
GB (1) GB2183849A (en)
IT (1) IT1199720B (en)
SE (1) SE455820B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE463893B (en) * 1987-09-28 1991-02-04 Geotronics Ab DEVICE FOR DETECTING THE LEVEL OF A BATTERY SURFACE OF A SMALL METAL BATH
MY108816A (en) * 1992-05-28 1996-11-30 Shell Int Research An apparatus for measuring the water bottom of a product storage tank and providing water bottom informaiton
DE4402463C2 (en) * 1994-01-28 1998-01-29 Amepa Eng Gmbh Device for discontinuous detection of the thickness of a layer on a molten metal
JPH0941357A (en) * 1995-07-31 1997-02-10 Stec:Kk Method of ground hardener side injection construction and equipment thereof
DE102006003950A1 (en) * 2006-01-26 2007-08-30 Heraeus Electro-Nite International N.V. Device for determining an interface of a slag layer
CA2797632C (en) 2010-04-30 2018-05-08 Agellis Group Ab Measurements in metallurgical vessels
CN104841897B (en) * 2014-02-13 2017-02-22 宝山钢铁股份有限公司 Measuring method and measuring apparatus for the thickness of molten layer of mold powder and fluctuation of liquid level of molten steel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB875437A (en) * 1959-02-03 1961-08-23 Gilbert & Barker Mfg Co Electronic level sensing apparatus
DE1909684C3 (en) * 1968-03-01 1975-02-27 Siemens Ag, 1000 Berlin U. 8000 Muenchen Measuring cables for determining the temperature distribution of bulk goods or the like in silos
US4081700A (en) * 1976-06-16 1978-03-28 Hamilton Ii William F Touch control switch circuit with compensation for power supply line fluctuations
GB2136131B (en) * 1983-02-16 1987-06-03 Mark Ian Howell Electromagnetic surveying of pipes and cables

Also Published As

Publication number Publication date
JPS62174313A (en) 1987-07-31
IT1199720B (en) 1988-12-30
GB8629268D0 (en) 1987-01-14
SE455820B (en) 1988-08-08
GB2183849A (en) 1987-06-10
DE3641987A1 (en) 1987-06-11
IT8622613A0 (en) 1986-12-09
SE8505813L (en) 1987-06-10

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