Endress+Hauser”s Proline Promass 83X/84X Coriolis flowmeter is a large four-tube device that can support up to 14-inch diameter pipelines, measuring the mass flow, density and temperature of oil, gas and other fluids in large lines at rates up to 4,100 tons/hr. The 83X model comes standard with fully traceable 0.1 percent flow accuracy, and optionally with a flow accuracy of 0.05 percent. The 84X is suitable for custody-transfer applications, featuring MID (OIML R117) and PTB approvals. For both models, accuracy of the density measurement is 0.01 g/cm3 (0.001 g/cm3 optional), while accuracy of the temperature measurement is 0.5 C. Both models also have a balanced measuring system with high immunity to external pipe vibrations and process influences, and both work in applications with entrained air.