Comparison tests for the determination of the viscosity values of reference liquids by capillary viscometers and stabinger viscometer SVM 3001

Abstract

The present study was realized for measuring viscosities of reference liquids using capillary viscometers and Stabinger viscometer SVM 3001 with viscosity interval between 1 mm2/s and 5000 mm2/s with temperatures from 20 °C to 80 °C. Based on our measurement with various liquids, we determine the viscosity values and compare both of the results. The aim of this study to evaluate the results of the primary level viscosity measurement system and stabinger viscometer and to compare the measurement results due to the providing traceability of Stabinger viscometer by TUBITAK UME. An increasing number of national metrology institutes and accredited laboratories provide viscometer calibration with reference liquids in a wide viscosity range. It is a common practice to use the viscosity of water as the metrological basic of viscometry. The national standard of viscosity provided by TUBITAK UME consists of a set of ubbelohde viscometers covering the measuring range of kinematic viscosities from about 0.5 mm2/s to 100 000 mm2/s. At the low viscosity, long − capillary viscometers are used as primary standards which are directly calibrated water.

Oil-gated isoporous membrane with micro-apertures for controllable pressure-induced passive flow regulator

“…Generally, the kinematic viscosity of the oil is measured by using a capillary viscometer, where the kinematic viscosity is calculated by measuring the time taken for a specic oil volume to ow through a calibrated glass capillary under a specied pressure differential. 28,29 This suggests that when the oil exhibits high kinematic viscosity, it experiences a prolonged ow duration and requires more time to restructure the pores of the membrane. This indicates the delay in the closing time of the silicone oil due to its high kinematic viscosity.…”

Measuring Kinematic Viscosity of Engine Oils: A Comparison of Data Obtained from Four Different Devices

“…The relative uncertainty value of each oil viscosity was calculated according to references [ 11 , 30 , 31 , 32 ]. The expanded uncertainty was calculated by multiplying the relative uncertainty by the coverage factor k = 2 to derive the 95% confidence interval.…”

“…Viscosity measurements are important in many industries, as they are a very fast, accurate, and very reliable way to analyze important factors affecting the machine performance [ 11 , 12 ].…”

“…On the other hand, the developed method of the simultaneous determination of dynamic viscosity and density—Stabinger viscometer—can boast many advantages. With this device, quick measurements in a wide temperature range become possible [ 11 ]. Unlike the capillary method, the measurement results are obtained in a short time; however, the device is not suitable for field use.…”

Experimental Investigation of the Viscosity Parameters Ranges—Case Study of Engine Oils in the Selected Viscosity Grade

“…Oil viscosity has an impact on the operation of an internal combustion engine, because [20][21][22] the maintenance of liquid friction and the reduction of wear of two mating surfaces strictly depend on viscosity-too low viscosity causes the loss of liquid friction, and leads to an increase in wear of the two elements. Furthermore, the amount of energy and losses to overcome friction depend on viscosity-high viscosity increases the energy needed to overcome friction.…”