Swimming Pool Filter Pressure Dashboard

The default band is clean ≈10–15 psi; backwash/clean at ~8–10 psi above the clean baseline. Treat it as a sensible starting point — your own specification, regulator, equipment manual or product datasheet sets the authoritative limits, and you can read your true band straight off the worst case those documents allow. Edit the readings against whatever band applies to you.

When the pressure rises about 8–10 psi above the clean baseline you recorded right after the last cleaning — that's the universal rule, regardless of filter type. Backwashing on a fixed schedule instead wastes water (and the heat/chemicals in it) if it's early, or hurts circulation and water clarity if it's late. If pressure barely drops after a thorough backwash, the sand may be channelled, calcified or due for replacement (sand lasts ~5–7 years), or a cartridge is worn out. Recording the post-clean baseline here makes the rise obvious.

Match the interval to the consequence and the rate of change: where an excursion spoils product or risks safety, log continuously (or as often as you can sample); where it is merely informative, daily or per-shift spot checks suffice. The in-range % and excursion count only mean something if your sampling is regular — sparse, irregular readings hide the excursions between them.

Yes — every reading is stored in this browser's localStorage on your device and nothing is uploaded to any server, which also makes the dashboard usable on sites with strict data policies. For shared, audit-grade records across a team or for regulatory retention, export the values into your own system.