Piezoelectric crystal transducers have many purposes, from cleaning jewellery to parking your car.
HAWK is the long standing world leader at the use of this technology to create the unique self-cleaning acoustic effect used in the Sultan Acoustic Wave Level Transmitter series. Dirty, dusty, wet environments cover passive sensors resulting in false readings, down time and constant manual maintenance.
The Sultan uses the physics of Acoustic Waves to keep its sensor face clean no matter what the environmental conditions are.