| 摘要 |
The method involves determining reference flow values using an intact reference control valve, in which the reference control valve is placed in open positions and reference is measured for each reference open positions on the reference flow value. The reference-impact sound is arranged by determining the reference flow rate value in the surrounding of the reference control valve. The current-impact sound is determined at the closed process control valve. An independent claim is included for a device for quantifying a leakage flow in a process control valve throttling a process flow, particularly constant flow pressure. |
