| 摘要 |
<p>The invention relates to a diagnostic system for a valve that can be actuated by a position controller via a drive. The inventive diagnostic system comprises a device provided for recording, storing and evaluating body sound spectra on the valve. In order to enable the valves to be diagnosed in a particularly reliable manner, a body sound spectrum which is recorded when the intact valve (2) is slightly open can be stored in the device (14) provided for recording, storing and evaluating body sound spectra, whereby the valve (2) can be closed for diagnostic purposes and the resemblance of the recorded body sound spectrum to the stored body sound spectrum is referred to as a criterion for a non-sealing of the valve (2).</p> |
