Expander speed
Thread Content
After maintenance on the 20,000-rpm air distribution expander, when the speed exceeded 11,000 rpm, the speed reading surged to 18,000 rpm. After replacing the gauge and probe, the issue was not resolved; the handheld speed meter indicated only 11,000 revolutions.
Did the rotation speed fluctuate after reaching 18,000?
Has it fluctuated upward and remained stable? Which components of the instrument were replaced?
The probe was replaced, the display instrument was used, and a shielding wire was connected; the rotation speed is now stable
In other words, the readings at the site appear normal, but they show high values when transmitted to the DCS system?
The machine goes to the site where the secondary instruments are located, and that’s it
The probe is fine; check the transmission. Also, is the vibration of the expander normal? ~~
There is no vibration measurement device, and no significant vibration abnormalities are observed
You have a backup, right? Try swapping the two watches~~