The catalytic unit measures pressure differences, reserves, pressure drops, etc., as well as the clearance of conduits

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Those of us who have done instrument maintenance on catalytic units know that when there is blockage in the pipes used for measuring pressure differences, reserves, pressure drops, etc., it is a very troublesome issue. When the conduit is blocked, the instrument reading will be higher or lower (depending on whether it is the positive pressure side or the negative pressure side that is blocked). When the conduit is blocked, the catalyst can block the pressure-transmitting conduit of the reverse blowing air (which creates even more problems), or it can only block the primary valve, the vent valve, and certain sections of the conduit. When cleaning the ducts, we must be extremely careful and thorough; if a mistake is made, in mild cases this can lead to contamination due to the release of catalysts and contamination of the operator’s clothing, while in severe cases it can result in physical injuries and production accidents. I would like to ask those who have worked with catalytic units for any tips, advanced techniques, or sophisticated tools related to cleaning ducts. Often, when we give up, we artificially set a fake value for a single reading as a temporary solution; there’s nothing we can do about it. Especially when process technicians take catalyst samples, the excessive release of gas through the instrument vent valves is really frustrating; after all, they’re in charge and you can’t say anything to them. I would appreciate it if everyone could offer some suggestions – thank you very much.