METHOD FOR MONITORING A FILL LEVEL MEASURING DEVICE OPERATING ACCORDING TO THE RADAR PRINCIPLE AND FILL LEVEL MEASURING DEVICE

摘要

Described and illustrated is a method (1) for monitoring a working according to the radar level measuring device (2), wherein the level measuring device (2) has a support housing (3) with a process side arranged leakage chamber (4), a signal conductor (5) for conducting transmission - and / or received signals, a transmitting and receiving unit (6a) configured for transmitting and receiving the transmitting or receiving signals and a control and evaluation unit (6b) designed to control the transmitting and receiving unit and for evaluating the received signals, wherein the signal conductor (5) from the interior of the leakage chamber (4) of the support housing (3) through a process-side first opening (7) of the leakage chamber (4) and / or the support housing (3) in the process-side outer space of the support housing (3) is guided wherein the process-side first opening (7) of the leakage chamber (4) and / or the support housing (3) and the transmitting and receiving unit (6a) facing zw Eite opening (8) of the leakage chamber (4) and / or the support housing (3) each with a first seal (9) or with a second seal (10) are sealed, comprising the following method steps: emitting (11) a pulse-shaped transmission signal along the signal conductor (5), receiving (12) a reflected received signal, forwarding (13) of the received signal to the control and evaluation unit (6b). The object of the invention to provide a method for monitoring a functioning according to the radar level measurement, with which in addition to the simple evidence of the presence of leakage also the change in the received signal can be quantified, is achieved in that the frequency spectrum of the received signal is determined and that the monitoring of the Level gauge in the frequency space is done. In addition, the invention relates to a level gauge.