Rotational viscometer

Details Rotational viscometer Rotational viscometer

G - Physics

01

N

73/69

G01N 11/14 (2006.01)

Patent

CA 1144392

ROTATIONAL VISCOMETER Abstract of the Disclosure A microprocessor controlled rotating-cylinder viscometer for measuring the shear stress at a given shear rate of a fluid is disclosed. The fluid is contained between a rotatable outer cylinder and a rotatable inner cylinder. The inner cylinder rotates in response to the torque produced by rotation of the outer cylinder in the fluid. The amount of rotation of the inner cylinder is related to the shear stress of the fluid. A fast slewing accurate motor speed control is provided for maintaining rotation of the outer cylinder at the selected shear rates. An absolute value shaft encoder monitors the amount of rotation of the inner cylinder to obtain the shear stress readings. The steady state value of the shear stress is obtained by averaging a predetermined number of measurements taken over a sample interval to obtain a stress reading. Consecutive readings are compared until the difference between readings in less than ? 1°, the current shear stress then taken on the steady state value.

376057

Affiliated with

Also associated with

Rating

Rotational viscometer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rotational viscometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotational viscometer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-258548