| 摘要 |
A rotational viscometer has an open ended outer cylinder (22) which is freely supported and a coaxial inner cylinder (18) which is rotated at one or more fixed angular velocities. Liquid in the annular region between the cylinders provides a viscous coupling causing the freely supported cylinder (22) to rotate. By providing a magnet (26) on one cylinder and an appropriately orientated coil (20) on the other cylinder, the voltage induced in the coil (20) provides a measure of relative rotation and thus of viscosity. |
