In recent plant rounds, I noticed subtle but consistent pressure drops right after our main water filters, which weren’t triggering any flow alarms yet. Checking the flow rates alongside revealed a slow decline that matched the pressure dip patterns. This pointed to developing clogging before a full flow restriction alarm trips. Monitoring pressure differential trends across filters can catch early flow restrictions without relying solely on flow sensors, especially when flow sensors have calibration drift. Has anyone else used pressure trend monitoring in water lines for spotting filter or pipe fouling before the system detects major flow loss? Would appreciate hearing how you set baselines or adjust for normal process fluctuations.
We’ve used pressure trend monitoring in a similar way, especially across filters and strainers. In our case, the flow alarms only came much later, but the slow increase in differential pressure was a clear early sign that something was building up.
What helped us was establishing a “normal” DP range during steady operation and watching how fast it changed rather than just absolute values. If the DP started rising faster than usual, it went on the maintenance list even if flow was still within limits.
We also noticed pressure trends are more reliable than flow alone when sensors start drifting. Using both together makes it easier to tell the difference between real fouling and normal process fluctuations.