Process and device for testing the closure, the leak tightness or the passage section of a controlling element, in particular a valve for electrically conducting liquids

摘要

Every electrically conducting connection running via solid bodies between the feed side and the drain side of the controlling element is open-circuited and the electrical conductivity through the liquid is determined between two electrodes which are insulated from each other and one of which is brought into contact with the electrically conducting liquid upstream of the feed side and the other downstream of the drain side of the controlling element.