Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Viscosity
Patent
1992-08-21
1994-03-01
Warden, Robert J.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Viscosity
73 5415, G01N 1100
Patent
active
052897168
ABSTRACT:
A device and method for determining the viscosity of a fluid, preferably molten glass. The apparatus and method uses the velocity of rising bubbles, preferably helium bubbles, within the molten glass to determine the viscosity of the molten glass. The bubbles are released from a tube positioned below the surface of the molten glass so that the bubbles pass successively between two sets of electrodes, one above the other, that are continuously monitoring the conductivity of the molten glass. The measured conductivity will change as a bubble passes between the electrodes enabling an accurate determination of when a bubble has passed between the electrodes. The velocity of rising bubbles can be determined from the time interval between a change in conductivity of the first electrode pair and the second, upper electrode pair. The velocity of the rise of the bubbles in the glass melt is used in conjunction with other physical characteristics, obtained by known methods, to determine the viscosity of the glass melt fluid and, hence, glass quality.
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Dixon Harold M.
Moser William R.
The United States of America as represented by the United States
Trembley Theresa A.
Tumm Brian R.
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