Device for determining the level of the contents in a container

The invention relates to is used for detecting the container (3) cargo (2) is degree device. Target of the present invention refers to realize a high precision delay circuit (9). The invention provides, the end part delay circuit (9): The emitting frequencies generating transmitted pulse emitter oscillator (14); (F1) for generating sampling pulse sampling oscillator of the sampling box (15), the sampling frequency is lower than the emitting frequencies; Apparatus and sampling's digital sampling circuit to the transmitted pulse of the sampling pulse (17); A sensor and for acquiring converting module when (14) and a sampling (15) and (f2-f1) for adjusting/control unit (16).