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1. (EP0802401) TEMPERATURE MEASUREMENT METHOD, TEMPERATURE CONTROL METHOD AND TEMPERATURE MEASUREMENT APPARATUS FOR HIGH-TEMPERATURE MELT

Office : European Patent Office
Application Number: 96935514 Application Date: 31.10.1996
Publication Number: 0802401 Publication Date: 22.10.1997
Publication Kind : A4
Designated States: BE, DE, FI
Prior PCT appl.: Application Number:JP1996003197 ; Publication Number: Click to see the data
IPC:
G01J 5/04
G01J 5/08
G PHYSICS
01
MEASURING; TESTING
J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
5
Radiation pyrometry
02
Details
04
Casings
G PHYSICS
01
MEASURING; TESTING
J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
5
Radiation pyrometry
02
Details
08
Optical features
CPC:
G01J 5/08
G01J 5/004
G01J 5/0044
G01J 5/0205
G01J 5/026
G01J 5/029
G01J 5/041
G01J 5/0821
G01J 5/084
Applicants: MITSUBISHI MATERIALS CORP
Inventors: OKABE SUSUMU
OGINO FUMIHIKO
SATO HIDEYA
HASEGAWA NOZOMU
FUNAMIZU TAKASHI
YAMADA YOSHIROU
Priority Data: 30989495 02.11.1995 JP
5587696 13.03.1996 JP
9603197 31.10.1996 JP
9784596 19.04.1996 JP
Title: (DE) TEMPERATURMESSVERFAHREN, TEMPERATURKONTROLLVERFAHREN UND TEMPERATURMESSVORRICHTUNG FÜR EINE HOCHTEMPERATURSCHMELZE
(EN) TEMPERATURE MEASUREMENT METHOD, TEMPERATURE CONTROL METHOD AND TEMPERATURE MEASUREMENT APPARATUS FOR HIGH-TEMPERATURE MELT
(FR) PROCEDE DE MESURE DES TEMPERATURES, PROCEDE DE CONTROLE DE TEMPERATURE ET EQUIPEMENT DE MESURE POUR MASSE FONDUE A HAUTE TEMPERATURE
Abstract: front page image
(EN) A method of measuring the temperature of a hot melt by converting into temperature a light signal transmitted through an optical fiber the leading end of which is inserted into the hot melt. The temperature measurement is cyclically executed while severing by cutting any devitrified leading end portion of the optical fiber. Peak values of measured temperature, attributable to burning of components of the optical fiber, are excluded from the results of the measurement. The temperature of the hot melt is controlled based on the measured temperature as close as possible to a lower limit temperature which when not exceeded causes a reduction in fluidity of slag on the hot melt. The temperature measurement is performed by a temperature measuring apparatus which has a device for feeding the optical fiber into and out of the hot melt and a cutting device for severing the devitrified leading end portion of the optical fiber.
(FR) La présente invention concerne un procédé de mesure de la température d'une masse fondue à haute température, comprenant l'introduction de l'extrémité distale d'une fibre optique dans cette masse et la transformation en température des signaux optiques transmis par la fibre optique. L'extrémité dévitrifiée de la fibre optique est sectionnée ou la perturbation d'une crête de mesure due à la combustion de cette fibre est éliminée. La température de la masse fondue est contrôlée au voisinage de la limite inférieure de température à laquelle la fluidité des scories peut être maintenue. En outre, la mesure de température peut être effectuée par un équipement comprenant un mécanisme d'introduction et de retrait de la fibre et un coupe-fibre.
Also published as:
CA2209207KR1003489800000*AU1996073390WO/1997/016709