REQUIREMENTS FOR MEASURING A PHYSICAL SIZE AND PROCEDURES FOR PREPARING A PHYSICAL SIZE

摘要

A device (14, 60, 80) for measuring the physical size of a fluid includes a housing (21, 61, 81),which includes a bypass flow channel (31, 32, 71, 91, 92, 95) and a unit (22, 62, 82, 97, 98) to capture a physical size of the flow in the bypass flow channel. The housing includes a housing head (41, 61a, 81a) made of a dielectric and a cover foil (42),which covers at least part of a surface (41a, 41b) of the housing head body and the surface of the housing is positively charged as positive loads (45) are placed in the housing head body along the surface of the housing head body or in the cover layer along a surface of the cover layer.