Val Controls IDC24-A User Manual page 21

Rough movement
The IDC will not report errors if the deviations from the reference signature are small. In cases like
this the signatures must be extracted and analysed visually.
The Figure 11 shows a signature from a valve with increased torque which leads to uneven
movement. The measured times and pressures for this test does not give an error but in time the
performance cab get so bad that it will give errors.
Figure 11: Rough movement
Val Controls A/S • Limfjordsvej 3 • DK-6715 Esbjerg N • Tel. +45 7547 0600
DID-UM-002
Revision: 10 vc@valcontrols.com • www.valcontrols.com
21/74