Glossary
Controls and ancillaries
Predictive maintenance
Also known as PdM, predictive maintenance, condition-based maintenance.
Predictive maintenance (PdM) schedules service based on actual equipment-condition signals — vibration, temperature, acoustic output, oil analysis — rather than fixed time-based intervals. PdM reduces unnecessary maintenance, defers replacements until they are really needed, and gives advance warning of impending failures.
PdM for sonic horns
PdM is increasingly applied to sonic-horn cleaning systems:
- Acoustic-output monitoring — a microphone or in-line pressure transducer trends the horn's SPL over time
- Air-consumption monitoring — flow meters detect changes in horn behaviour
- Firing-count tracking — cumulative cycle count for diaphragm-life prediction
- Cycle-time analysis — slower or faster diaphragm action signals component drift
Trend analysis flags the gradual SPL drift that signals impending diaphragm replacement, allowing maintenance to be scheduled into a routine outage rather than triggered by a sudden failure.
Related terms
Related terms
- Reliability-centred maintenanceRCM is a structured framework for deciding what maintenance is needed and when, by analysing failure modes, consequences and detection methods for each asset.
- Mean Time Between FailuresMTBF is the average time between failures of repairable equipment. The headline reliability metric for industrial maintenance planning.
- Diaphragm replacementDiaphragm replacement is the routine maintenance task for industrial sonic horns. Typical interval 3–5 years for titanium, 1.5–3 years for stainless. Field-replaceable in under an hour.