Level sensor for fluids, in particular for determining the level of the brake fluid or of the contents of the fuel tank in motor vehicles

摘要

The level sensor contains a ceramic PTC-resistor (10), provided with current feedlines (2, 3), as sensor element, is surrounded by a protective sheath (14) which is provided with openings (17) and is positioned on a housing (1) which is provided with a screw thread (19) and through which the current feedlines are guided, the current feedlines (2, 3) being composed at their outwardly presented ends from standardised plug-in tongues (4, 5) inside the bore (21) made of elongate pieces (6, 7) and of thin, narrow contact springs (8, 9) which are each attached to an elongate piece (6, 7), hold the ceramic PTC-resistor (10) in a clamped fashion and at the same time produce the electrical contact, and the ceramic PTC-resistor (10) and the contact springs (8, 9) being provided with an insulating coating (11) produced by immersion coating. IMAGE