The Rosemount 4051SFA Annubar Flow Meter features an averaging pitot tube that delivers superior measurement accuracy over a wide flow range. Its T-shaped sensor is engineered with an integrated thermowell, capable of obtaining measurements via a single pipe penetration while maintaining a small profile in the pipe to reduce permanent pressure loss and increase energy savings. With an industry-leading 20 year warranty and 20 year stability, the Rosemount 4051SFA Annubar Flow Meter is built to withstand tough processes and harsh environments. Bluetooth® connectivity lets you simplify configuration and maintenance while increasing personnel safety. Plus, built-in advanced diagnostics give you more insights to keep you informed.