Fault analysis of absolute pressure gauge
Thread Content
There is a gauge for absolute pressure at both the top and bottom of the vacuum tower. Under conditions where the process parameters remain unchanged, the pressure at the top of the tower gradually changes from 2 KPa to 9 KPa before stabilizing. Checks such as resetting the gauge and clearing the pressure transmission pipes did not resolve the issue; the problem was resolved after swapping the pressure transmitters between the top and bottom of the tower. The cause of this issue is unknown – please help analyze it；
Check the inlet pipe for any minor sand eyes or hidden cracks. Replace all pads! Swap the two tables and see how it goes. Make another judgment!
Given your situation, it’s likely that there’s a leak at the point where it connects to the gauge – an internal leak. Try replacing it and seeing if that helps? :)