ARC-SHAPED CAVITY OF THE MICROWAVE MOISTURE ANALYZER

摘要

An arc-shaped cavity of a microwave moisture analyzer is classified as an analytical instrument which includes a top panel, a bottom panel and a side panel for forming the cavity, wherein a flat and straight side panel unit provided on the side panel; and a curved side panel unit connected to the flat and straight side panel unit such that the arc-shaped cavity is formed. The flat and straight side panel unit has a straight surface and the curved side panel unit has an arc surface. Through the combined application of focused microwave energy at the radial/axial directions and the reflection/diffusion of the straight surface, the location at which the sample is placed forms a uniform and high field density area which greatly increase the heating efficiency of microwave, and is particularly suitable for sheet-like sample or sample with large surface area. Accordingly, the moisture volatile of the sample can be analysis accurately and efficiently, where the deviation due to too high or too low moisture content in the sample is minimized and the work efficiency for the entire analysis process is increased dramatically. The present invention can be widely used in testing/analysis of moisture content.