METHOD OF DETERMINING FALLING STATE OF FALLING BODY FOR VISCOMETER OF FALLING BODY TYPE, FALLING-BODY VELOCITY MEASURING SENSOR, AND VISCOMETER OF FALLING BODY TYPE INCLUDING SAME

摘要

A technique which is usefully used to determine a falling state of a falling body, such as whether the falling body reaches a falling termination speed and falls uniformly or falls with a change in the speed is provided. In particular, a method of determining a falling state of a falling body (4) passing through a measured substance (3) inserted into a measuring container (11) is provided, the method including: measuring a first elapsed time (Ta) which is a time interval between extreme values (M1 and M2) of two potentials generated in a first coil pair (91) when the falling body (4) passes through the first coil pair (91) and a second elapsed time (Tb) which is a time interval between extreme values (M3 and M4) of two potentials generated in a second coil pair (92) when the falling body (4) passes through the second coil pair (92); and determining the falling state of the falling body (4) by comparing the first elapsed time (Ta) with the second elapsed time (Tb).