Pressure accuracy across the operating range, probe tone level and frequency, pump rate, and compliance measurement checked against calibrated test cavities. The cavity check is the quickest useful confidence test and the one clinics most…
Pressure accuracy across the operating range, probe tone level and frequency, pump rate, and compliance measurement checked against calibrated test cavities. The cavity check is the quickest useful confidence test and the one clinics most often skip between annual services.
The single most frequent fault is a partially occluded probe tip. It produces erratic or flat traces that look like clinical findings and are not. Daily cavity verification catches it immediately; without that habit, a blocked probe can run for weeks and contaminate a whole caseload of results.
A leak in the pneumatic path shows up as a failure to hold pressure or as traces that never reach peak. Sources are usually the tubing, the probe seal, or a perished connector. All are consumable parts and all are cheap - the cost of a leak is the repeat appointments, not the repair.
Annual calibration with certification, plus daily cavity checks by your own staff. Instruments used across multiple sites, carried in vehicles or subjected to temperature swings deserve a shorter interval, because transport is harder on them than clinic use.
Primary regulations and standards referenced above. Where a standard is published commercially it is named in full rather than linked to a copy.