method and measuring device for recording the kolbenposition a piston in a cylinder by means of a microwave koppelsonde fluidischen

摘要

The method involves coupling a waveguide wave into an adjacent cylinder chamber (13) by a microwave-coupled probe (18) arranged in or on a cylinder cover (15) of a fluid cylinder (10). The magnitude of the field strength of the standing wave is captured in the region of a piston stop device in the adjacent cylinder chamber. The position of a piston (12) is determined from the magnitude of the field strength. An independent claim is also included for a measuring device for capturing the piston position in a fluid cylinder.