The Krohne ALTOSONIC III is a 3-path ultrasonic flowmeter, designed for light crude oil and refined products. The ALTOSONIC III offers decisive advantages over conventional, mechanical flowmeters in custody transfer metering applications. The ALTOSONIC III has no obstructions or moving parts, resulting in no wear or pressure loss. In this way, operators stand to gain from maintenance-free operation and simplified meter run configuration (smaller pump capacity, no filters required). This results in considerable cost savings in both capital expenditure (CAPEX) and operational expenditure (OPEX).