| 摘要 |
The invention relates to a method for rough detection of a filling material in a container in liquid or bulk material by using a level-measuring device which senses a reflected echo signal. According to the invention, said rough detection is dependent on the breadth of the individual echos in a enveloping curve in an echo signal. Alternatively, said rough detection can occur according to the number of equidistant echoes in an echo signal or according to the detection of an agitator. All of said alternatives can be combined together. The invention also relates to devices for carrying out said methods. |
