Airborne ultrasound technology provides solutions for locating a variety of potential problems. The three main areas are leak detection, mechanical inspection/trending and electrical inspection.
Instruments based on airborne ultrasound sense high frequency sounds produced by leaks, electrical emissions and mechanical operations. They translate these sounds down into the audible range by an electronic process called heterodyning where they are heard through headphones and observed as intensity increments, typically decibels, on a display panel.
Since ultrasound is composed of high frequencies that are not heard by the human ear, the heterodyning process allows users of airborne ultrasound instruments to “hear” an accurate translation of these sounds helping them identify subtle changes in operating equipment that might normally be overlooked, providing early warning capabilities.