| 摘要 |
An electromagnetic field tuning and detection apparatus generates in to a material space and in at least two different directions radio frequency electromagnetic fields adapted to resonate in different directions at a different frequency on the basis of a material insertable into the material space; and a signal processing unit configured to determine a moisture content of the material on the basis of a resonance frequency of each electromagnetic field and quality of each resonance in different directions. While controlling a process, a control system comprises a measurement chamber and an electromagnetic field tuning and detection apparatus placed on each material feed line of the process. A controller may control the process on the basis of each determined moisture content on each feed line. |
