JPS56125624A - Measuring apparatus of molten metal level - Google Patents

Measuring apparatus of molten metal level

Info

Publication number
JPS56125624A
JPS56125624A JP2870480A JP2870480A JPS56125624A JP S56125624 A JPS56125624 A JP S56125624A JP 2870480 A JP2870480 A JP 2870480A JP 2870480 A JP2870480 A JP 2870480A JP S56125624 A JPS56125624 A JP S56125624A
Authority
JP
Japan
Prior art keywords
voltage
component
signal
circuit
noise
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.)
Pending
Application number
JP2870480A
Other languages
Japanese (ja)
Inventor
Ichiro Wada
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2870480A priority Critical patent/JPS56125624A/en
Publication of JPS56125624A publication Critical patent/JPS56125624A/en
Pending 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

Abstract

PURPOSE:To make highly accurate and highly reliable measurement by removing the noise component contained in the electromotive force generated from a detecting coil and the noise component out of the signal component and taking out only the signal component. CONSTITUTION:After the electromotive force generated from a detecting coil C is amplified with an amplifier 41, it is inputted to a synchronous rectifying circuit 53. On the other hand, the exciatation current from an excitation current detecting circuit 51 is controlled over phase shifting with a phase shifter 52 so as to assume the same phase as that of the signal voltage and the excitation current, after which it is inputted into the circit 53. In the circuit 53, the component of noise voltage is removed and the voltage of the signal voltage alone is taken out. The voltage which is now only the signal voltage component is converted to a level value by a level converting circuit 42.
JP2870480A 1980-03-07 1980-03-07 Measuring apparatus of molten metal level Pending JPS56125624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2870480A JPS56125624A (en) 1980-03-07 1980-03-07 Measuring apparatus of molten metal level

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2870480A JPS56125624A (en) 1980-03-07 1980-03-07 Measuring apparatus of molten metal level

Publications (1)

Publication Number Publication Date
JPS56125624A true JPS56125624A (en) 1981-10-02

Family

ID=12255844

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2870480A Pending JPS56125624A (en) 1980-03-07 1980-03-07 Measuring apparatus of molten metal level

Country Status (1)

Country Link
JP (1) JPS56125624A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018203551A1 (en) * 2018-03-08 2019-09-12 Te Connectivity Germany Gmbh Sensor for measuring a height of a liquid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018203551A1 (en) * 2018-03-08 2019-09-12 Te Connectivity Germany Gmbh Sensor for measuring a height of a liquid

Similar Documents

Publication Publication Date Title
IN170428B (en)
JPS56125624A (en) Measuring apparatus of molten metal level
JPS5776451A (en) Measuring circuit for eddy current magnetic field
JPS5536782A (en) Electromagnetic sensing method and electromagnetic sensor
JPS56112662A (en) Measuring apparatus for loss of capacity element
JPS53128363A (en) Flow meter of eddy current type
JPS5512401A (en) Eddy current type range finder
JPS5612568A (en) Body detecting device
JPS5664661A (en) Measuring apparatus of dc electric energy
JPS54142498A (en) Magnetic field generator
JPS566170A (en) Iron loss measuring instrument
JPS55125404A (en) Distortion gage
JPS55149863A (en) Extreme value detector for electric signal
JPS5523436A (en) Measuring instrument for wettability of solder
JPS54113842A (en) Anti-time eddy current relay
JPS5333691A (en) Measurement of alternating current corrosion
JPS5523480A (en) Measuring instrument for modulation degree
JPS5684572A (en) Measuring method for noise voltage of semiconductor device
JPS5658623A (en) Detecting method for load of hoisting machine in crane and the like
JPS53135377A (en) Eddy current flaw detecting apparatus by rlc series resonance method
JPS56126722A (en) Measuring device
JPS56111474A (en) Total testing device for motor
JPS54143678A (en) Eddy current type velocity measuring apparatus
JPS56139269A (en) Measuring method of mold level in continuous casting
JPS5550140A (en) Atmospheric corrosion circumstance meter