METERING METHOD OF PARTICULATE SUBSTANCE, APPARATUS FOR MAKING SUCH METERING AND INSTRUMENT COMPRISING A GREATER NUMBER OF SUCH APPARATUS

摘要

In the present invention, there is disclosed a metering device for metering a predetermined amount of a particulate substance, comprising: a body member (2) defining a metering chamber (9); an unbroken inflow path having an inlet (6) and leading to the metering chamber (9), an outflow path having an outlet (8) and leading from the metering chamber (9); and a reservoir (30) connected to the inflow path inlet (6). Said inflow path includes a first channel (10) that is extended downwards from the inlet (6) and is coaxial to an axis (4), and a second channel (12) extended at an angle {beta}relative to said axis (4) of rotation so that the second channel (12) is inclined downwards in filling state and upwards in emptying state. There is also described a method of such metering using a metering apparatus having at least two the above-described metering devices.