Filling level measuring device operating with microwaves, having an insert composed of a dielectric, and process for producing the dielectric

Abstract From the Canadian patent

A description is given of a filling level measuring device operating with microwaves, having a housing and an insert composed of a dielectric, and of a process for producing the dielectric, in which the dielectric constant of the insert is adjustable and in which the insert has a high chemical resistance and a mechanical strength adequate for industrial applications. The dielectric is a composite material composed of a fluoroplastic, in particular polytetrafluoroethylene and ceramic and is produced by mixing powdered ceramic and powdered fluoroplastic, drying the mixture pressing the mixture and sintering the pressed mixture.