viscometer

viscometer
—viscometric /vis'keuh me"trik/, viscosimetric /vis'koh si me"trik/, adj. —viscometrically, adv. —viscometry, n.
/vi skom"i teuhr/, n.
a device for measuring viscosity.
Also, viscosimeter /vis'koh sim"i teuhr/.
[1880-85; syncopated var. of VISCOSIMETER; see VISCOSE, -I-, -METER]

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Instrument for measuring the viscosity (resistance to internal flow) of a fluid.

In one type, the time taken for a given volume of fluid to flow through an opening is recorded. In the capillary-tube viscometer, the pressure needed to force the fluid to flow at a specified rate through a narrow tube is measured. Other types depend on measurements of the time taken for a sphere to fall through the fluid, or of the force needed to rotate the inner cylinder of a pair (the space between the two cylinders being filled with the fluid under test), or of the rate at which oscillations of a disk vibrating in the fluid die out.

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▪ measurement instrument
      instrument for measuring the viscosity (resistance to internal flow) of a fluid. In one version, the time taken for a given volume of fluid to flow through an opening is recorded. In the capillary tube viscometer, the pressure needed to force the fluid to flow at a specified rate through a narrow tube is measured. Other types depend on measurements of the time taken for a sphere to fall through the fluid, or of the force needed to rotate the inner cylinder of a coaxial pair (the space between the two cylinders being filled with the fluid under test), or of the rate at which oscillations of a disk vibrating in the fluid die out.

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Universalium. 2010.

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