MEASURING METHOD FOR POWDER LEVEL INSIDE POWDER HOUSING CONTAINER

摘要

PROBLEM TO BE SOLVED: To find a method capable of precisely and continuously detecting the residual amount of a powder or a granule existing inside a container or an apparatus used to house the powder or the granule such as a synthetic resin or the like. SOLUTION: A structure whose window glass is composed of a conductive treated glass, and in which a gas flow is blown to at least the inner side surface of the window glass, is provided. The powder or the granule is detected through an observation window used to prevent a fine powder or the like from adhering. When a laser-type level meter composed of a laser irradiation part and a reflected laser light detector is applied, the level of an existence amount of the powder or the granule inside the powder housing container or the apparatus is measured. COPYRIGHT: (C)2003,JPO