FR2292960A1 - Optical temp. measurement of continuously cast ingots - using annular gas jet to surround optical path and remove interference - Google Patents

Optical temp. measurement of continuously cast ingots - using annular gas jet to surround optical path and remove interference

Info

Publication number
FR2292960A1
FR2292960A1 FR7536259A FR7536259A FR2292960A1 FR 2292960 A1 FR2292960 A1 FR 2292960A1 FR 7536259 A FR7536259 A FR 7536259A FR 7536259 A FR7536259 A FR 7536259A FR 2292960 A1 FR2292960 A1 FR 2292960A1
Authority
FR
France
Prior art keywords
temp
optical path
gas
measurement
optical
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
FR7536259A
Other languages
French (fr)
Other versions
FR2292960B1 (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.)
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
Centre de Recherches Metallurgiques CRM ASBL
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 Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Publication of FR2292960A1 publication Critical patent/FR2292960A1/en
Application granted granted Critical
Publication of FR2292960B1 publication Critical patent/FR2292960B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/04—Casings
    • G01J5/041—Mountings in enclosures or in a particular environment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/04—Casings
    • G01J5/041—Mountings in enclosures or in a particular environment
    • G01J5/042—High-temperature environment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/05—Means for preventing contamination of the components of the optical system; Means for preventing obstruction of the radiation path
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/05—Means for preventing contamination of the components of the optical system; Means for preventing obstruction of the radiation path
    • G01J5/051—Means for preventing contamination of the components of the optical system; Means for preventing obstruction of the radiation path using a gas purge

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Radiation Pyrometers (AREA)

Abstract

A visual instrument (e.g. an optical pyrometer) is used for measuring the temp. of a body where the optical path is surrounded by a protective tubular sheath; which is extended by a cylindrical or diverging annulus of gas completely surrounding the optical path of the body. Gas is pref. also blown down the sheath to remove any interfering vapours. The device is for use on continuously-cast ingots, the flow of gas being sufficient to blow away water-spray interfering with temp. measurement, plus any dust and smoke, without affecting the temp. of the ingot-surface being measured. The gas used is pref. air, N2 and/or an inert gas, completely free from oil, CO, CO2 and H2O.
FR7536259A 1974-11-28 1975-11-21 Optical temp. measurement of continuously cast ingots - using annular gas jet to surround optical path and remove interference Granted FR2292960A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE822744 1974-11-28

Publications (2)

Publication Number Publication Date
FR2292960A1 true FR2292960A1 (en) 1976-06-25
FR2292960B1 FR2292960B1 (en) 1980-02-08

Family

ID=3861123

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7536259A Granted FR2292960A1 (en) 1974-11-28 1975-11-21 Optical temp. measurement of continuously cast ingots - using annular gas jet to surround optical path and remove interference

Country Status (2)

Country Link
FR (1) FR2292960A1 (en)
LU (1) LU73885A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0147885A1 (en) * 1983-12-14 1985-07-10 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Method of cleaning a hot metallic surface during movement
FR2583779A1 (en) * 1985-06-25 1986-12-26 Montaudon Patrick Device for reducing the oxidation of objects placed in a gas treatment enclosure when they are extracted therefrom

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0147885A1 (en) * 1983-12-14 1985-07-10 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Method of cleaning a hot metallic surface during movement
FR2583779A1 (en) * 1985-06-25 1986-12-26 Montaudon Patrick Device for reducing the oxidation of objects placed in a gas treatment enclosure when they are extracted therefrom

Also Published As

Publication number Publication date
FR2292960B1 (en) 1980-02-08
LU73885A1 (en) 1976-07-01

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Legal Events

Date Code Title Description
ST Notification of lapse