Used with all VesselCheck non-invasive level systems, this sensor from HMA INSTRUMENTATION is made up of a piezoelectric transducer that propagates ultrasonic waves, and then converts reflected waves back to the processor as an electrical current. It is available with in-built temperature compensation (TIUP) and ATEX/IECEx approvals for use within hazardous areas, regardless of where the VesselCheck processor is located (this can be up to 100 m away).