On the Study of Technical Viscometer (5 th Report)

Abstract

In this report the author described the application of the experimental and theoretical results which had been reported on the 1 st∼4 th reports and in addition the experimental results of two newly-designed technical absolute viscometers. The one is a viscometer whose jets are non-rounded uniform short tubes and its measuring error is less than 3∼4% for all range, therefore its accuracy is higher than the Redwood viscometer obtained in our markets. The other one is a viscometer whose jets are the short tubes with divergent exits, and the kinematic viscosity can be given by multiplying the jet factor x by time of efflux T sec. (effluxed volume is 25 cc) and its measuring error is less than 2% at the measuring ranges of these jets. As this viscometer is wieldy and strong in construction and high accuracy, it is very suitable for any practical use.