Abstract: A material metering method which is executed by way of multistage metering including a memory in which a target metering time for the each stage of metering except for a first stage of metering is memorized, each of the target time including unstable metering time for drop amount of material whose drop amount per unit time after changed from prior stage of the metering is unstable; a metering time measuring unit for measuring an actual metering time at the each stage of metering; and a set value correction unit for correcting the supply mass switch value at each stage of the metering except for the first stage of metering based on the target metering time and the actual metering time after performing one batch metering, whereby the entire metering time for subsequent batch metering to be performed is more reduced than one batch metering performed.

Abstract: A material metering system which is executed by way of multistage metering in which material drop amount supplied into a metering device from a material outlet of a hopper per unit time is stepwisely reduced in one batch metering as a stage of metering is changed to subsequent stage of metering, each time the mass value measured with the metering device reaches a supply mass switch value as set in advance for each stage of the metering, thereby performing one batch metering.