| 摘要 |
<p>A transient flow capillary viscometer is provided for establishing a measure of the viscosity of a highly viscous test fluid. More particularly, a capillary tube (12) filled with test the fluid is provided. The viscometer relies upon inducing a step change in the differential pressure across the ends of the capillary tube, which causes the fluid to flow therein. The resultant decrease in pressure drop as a function of time, i.e., the half-life of pressure decay, is monitored and provides an approximate measure of the viscosity of the fluid.</p> |
