METHOD OF DETERMINATION OF DENSITY, VISCOSITY AND LUBRICATING CAPACITY OF LIQUID MEDIA Russian patent published in 2003 - IPC

FIELD: study of physical and physico-chemical properties of liquid media; oil, chemical, automotive-tractor, microbiological, food-processing and other industries. SUBSTANCE: body having mass "m" and volume "V" is set in up and down motion at different velocities by external force "F" on side of thread wound on pulley which is rotated by motor provided with built-in tachometer. Force "F" is related linearly with velocity of motion of body. Then, dependence of velocity v_up of up motion of body versus force v_up = k_upF+b_up and velocity v_down of down motion of body versus force v_down = k_downF+b_down obtained from readings of piston velocity indicator is found, where k_down and k_up are proportionality factors between up and down motion of body external force "F" linearly related with velocity of body motion; b_down and b_up are magnitudes of velocities of up and down motion of body at zero magnitude of external force linearly related with velocity of body motion. Density, viscosity and lubricating capacity are determined from magnitudes thus obtained. EFFECT: enhanced accuracy; extended functional capabilities. 4 dwg