Method for putting a level measuring device into operation

A method of putting into operation a level measuring device which is configured to measure a level of a filling material in a container, the method comprising:

• detecting, by means of a radar sensor unit of the level measuring device, an echo curve, wherein the echo curve comprises at least a first echo;
• selecting, from the echo curve, the first echo corresponding to a first distance and having a first amplitude, the first amplitude having the highest amplitude of the echo curve;
• determining a calculated first amplitude, wherein the calculated first amplitude is a function of the first distance;
• and
• if the first amplitude is higher than the calculated first amplitude, evaluating the echo curve as acceptable for putting into operation the level measuring device.