Dynamic density measurement with the use of terahertz - radiation with real time - thickness measurement to the process control

摘要

A method for determining a density of a rolling compressed belt, discloses. The method has a compression of a pharmaceutical dry powder between the press rolls of a rolling compressor, in order to produce a pressing piece - vol. The method also has a determining a thickness at a point on the pressing piece - band in a non-invasive manner, after the same between the press rolls was rolled on. In addition, the process, an operation of the pressed part - belt through an intermediate space between the terahertz - emitter and the terahertz - detector. As a next step, the method has a determining a refractive index at the point on the pressing piece - strip with the use of a measured value of the terahertz - emitter and the terahertz - detector and a measured value for the thickness at the point on. Finally, the method includes calculating a density of the pressed part - belt to the point with the use of a value of the refractive index.