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Title: Apparatus and method for high temperature viscosity and temperature measurements

Abstract

A probe for measuring the viscosity and/or temperature of high temperature liquids, such as molten metals, glass and similar materials comprises a rod which is an acoustical waveguide through which a transducer emits an ultrasonic signal through one end of the probe, and which is reflected from (a) a notch or slit or an interface between two materials of the probe and (b) from the other end of the probe which is in contact with the hot liquid or hot melt, and is detected by the same transducer at the signal emission end. To avoid the harmful effects of introducing a thermally conductive heat sink into the melt, the probe is made of relatively thermally insulative (non-heat-conductive) refractory material. The time between signal emission and reflection, and the amplitude of reflections, are compared against calibration curves to obtain temperature and viscosity values.

Inventors:
; ; ;
Issue Date:
Research Org.:
Mississippi State Univ., Mississippi State, MS (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
874023
Patent Number(s):
6296385
Application Number:
09/075,922
Assignee:
Mississippi State University (Mississippi State, MS)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G - PHYSICS G01 - MEASURING G01K - MEASURING TEMPERATURE
DOE Contract Number:  
FG02-93CH10575
Resource Type:
Patent
Resource Relation:
Patent File Date: 1998 May 12
Country of Publication:
United States
Language:
English
Subject:
apparatus; method; temperature; viscosity; measurements; probe; measuring; liquids; molten; metals; glass; similar; materials; comprises; rod; acoustical; waveguide; transducer; emits; ultrasonic; signal; reflected; notch; slit; interface; contact; hot; liquid; melt; detected; emission; avoid; harmful; effects; introducing; thermally; conductive; heat; sink; relatively; insulative; non-heat-conductive; refractory; material; time; reflection; amplitude; reflections; compared; calibration; curves; obtain; values; molten metals; calibration curve; similar material; ultrasonic signal; temperature measurements; refractory material; heat sink; molten metal; thermally conductive; hot liquid; temperature measurement; calibration curves; materials comprises; temperature liquid; harmful effects; conductive heat; materials comprise; temperature measure; temperature liquids; sonic signal; similar materials; /374/73/

Citation Formats

Balasubramaniam, Krishnan, Shah, Vimal, Costley, R. Daniel, and Singh, Jagdish P. Apparatus and method for high temperature viscosity and temperature measurements. United States: N. p., 2001. Web.
Balasubramaniam, Krishnan, Shah, Vimal, Costley, R. Daniel, & Singh, Jagdish P. Apparatus and method for high temperature viscosity and temperature measurements. United States.
Balasubramaniam, Krishnan, Shah, Vimal, Costley, R. Daniel, and Singh, Jagdish P. Mon . "Apparatus and method for high temperature viscosity and temperature measurements". United States. https://www.osti.gov/servlets/purl/874023.
@article{osti_874023,
title = {Apparatus and method for high temperature viscosity and temperature measurements},
author = {Balasubramaniam, Krishnan and Shah, Vimal and Costley, R. Daniel and Singh, Jagdish P.},
abstractNote = {A probe for measuring the viscosity and/or temperature of high temperature liquids, such as molten metals, glass and similar materials comprises a rod which is an acoustical waveguide through which a transducer emits an ultrasonic signal through one end of the probe, and which is reflected from (a) a notch or slit or an interface between two materials of the probe and (b) from the other end of the probe which is in contact with the hot liquid or hot melt, and is detected by the same transducer at the signal emission end. To avoid the harmful effects of introducing a thermally conductive heat sink into the melt, the probe is made of relatively thermally insulative (non-heat-conductive) refractory material. The time between signal emission and reflection, and the amplitude of reflections, are compared against calibration curves to obtain temperature and viscosity values.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}