Operation of a Vibrating Wire Viscometer with a Wire Radius of 0.207 mm in a Fluid with Nominal Viscosity, at T = 289.1 K, of 1.581 Pa·s at Temperatures between (289.1 and 420.7) K and a Pressure of 0.1 MPa

A viscometer formed of a tungsten wire of radius about 0.2 mm has been evaluated with measurements of the viscosity of certified reference material for viscosity N350 at viscosities up to 1.581 Pa·s, at temperatures between (289.1 and 420.7) K and a pressure of 0.1 MPa. The results differed from the cited values by less than ± 10 %.