| 摘要 |
A device and a method in processing, such as pharmaceutical processing, is provided. At least one signal is transmitted in a processing structure which is adapted to receive materials. The propagated signal is received and a parameter value thereof is compared with a reference value. The presence of materials or any other geometrical change in the processing structure is evaluated based on the comparison. The signal may be in the form of an electromagnetic wave, e.g. a microwave. Also, a use of a processing vessel, or a pipe connected to such a vessel, is provided |
