Method for controlling a transducer device in level sensors and device for carrying out such a method

摘要

The invention pertains to a method for controlling a transducer device (7) featuring supply lines (17, 18) in a level sensor. The transducer device (7) is coupled to a fork resonator with fork tines and is used for both oscillation excitation and also for oscillation detection. For detection of a defective transducer device or an incorrectly connected connection of this transducer device (7), the capacitance value between the supply lines (17, 18) or a variable proportional to this value is determined during the oscillation excitation and if there is deviation from a predetermined desired value by a predetermined amount, a fault signal is generated.