An error analysis of a rheological study of magnetic nanofluids on a rotational viscometer

Abstract The paper considers metrological instrumentation for studying the rheological properties of magnetic fluids. It also presents design a coaxial viscometer. There is analysis factors that affect measurement accuracy. Errors are systematized into 2 main groups: method and instrumental. authors analyse contribution each group to total error. established temperature instability liquid under study error in determining level contact with measuring cylinder have greatest effect on results. theoretical assessment instrument its minimum value. propose directions improving viscometer design. They show possibility significant reduce by calibrating device. comparative studies experimental reference liquids indicating good accuracy reliability data.