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

Proposed is a technology of much use to determine the falling state of a falling body, for example, whether or not the velocity of the falling body reaches a terminal falling velocity and the falling body is falling at a constant velocity or whether or not the falling body is falling while the velocity thereof changes. Disclosed is a method of determining the falling state of a falling body (4) that passes through an object (3) to be measured inside a measuring vessel (11), which comprises measuring a first elapsed time (Ta) serving as a time interval between extrema (M1, M2) of two potentials generated in a first coil pair (91) when the falling body (4) passes between the first coil pair (91) and a second elapsed time (Tb) serving as a time interval between extrema (M3, M4) of two potentials generated in a second coil pair (92) when the falling body (4) passes between the second coil pair (92), and determining the falling state of the falling body (4) by comparing the first elapsed time (Ta) and the second elapsed time (Tb).