Circuit arrangement for capacitive fluid level measurement, has circuit part with fluid level-dependent measuring capacity and controllable switching element arrangement

摘要

The circuit arrangement has a circuit part (I) with a fluid level-dependent measuring capacity (C-mess) and a controllable switching element arrangement (S-1). Another symmetrical circuit part (II) is arranged to the former circuit part and is provided with a reference capacity (C-ref) and another controllable switching element arrangement (S-2). An independent claim is also included for a method for capacitive fluid level measurement by a circuit arrangement.