Viscometer

Details Viscometer Viscometer

1998-03-09

2000-06-06

O'Shea, Sandra

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Viscosity

73 5428, G01N 3348, G01N 1114

Patent

active

060704578

ABSTRACT:
The invention comprises a viscometer for indicating a liquid viscosity in terms of a measured rotational deflection imparted upon a support structure for supporting a bob within the liquid, which has a bob assembly unit suspended between the fixation points for a torsion wire. The torsion wire runs through a tube, which is connected to the bob. The tube has cutouts so that it may rotate in response to rotations of a cup, in which the bob is disposed. The framework to support the fixation points for the wire is preferably positioned to extend through cutouts in the tube so as not to interfere with rotational movements of the tube. An arm connected to the tube in conjunction with a transducer measures the angular defection of the wire for determination of viscosity for the fluid being examined. The rotational viscometer also comprises a centralizing device for improving the accuracy, stability, reliability and overall performance thereof, where such centralizing device for the bob exerts a symmetric non-contact force, as a magnetic force, on the bob exposed to the liquid under test.

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