Rosemount™ 3051CFC Wireless Compact Annubar™ Flow Meter

Built with a secure WirelessHART® network, the Rosemount 3051CFC Wireless Compact Annubar Flow Meter provides optimal flow measurement accuracy without the cost of wiring. This device is designed with a patented averaging pitot tube engineered for installation between raised-face flanges, eliminating the need for impulse piping and additional process penetrations. The T-shaped design of this sensor also includes a flat upstream surface for high performance over a wide flow range.


  • WirelessHART® technology is secure, cost-effective and delivers >99% data reliability
  • Compact pitot tube designed to fit and install between raised-face flanges for straightforward installation
  • T-shape sensor with flat upstream surface offers a fixed separation point for high performance over a wide flow range
  • 10-year stability and 8:1 flow turndown (150:1 rangedown) produce reliable measurements and application flexibility
  • Sensor design eliminates the need for impulse piping and added pipe penetrations for a cost-effective solution
  • Complete flow assemblies are leak-tested and calibrated to reduce leak points up to 70% and simplify installation
  • SmartPower™ module provides up to 10-year maintenance-free operation and field replacement without transmitter removal
  • Easy installation enables quick instrumentation of measurement points without the cost of wiring
  • Warranty
    Up to 5-year limited warranty
  • Rangedown
    Up to 150:1 (8:1 flow turndown)
  • Measurement
    Range Up to 1000 inH2O (2,48 bar) differential
  • Line Size
    2 to 8 in. (50 to 200 mm)
  • Output
    Differential pressure, scaled variable
  • Communication Protocol
  • Process Wetted Material
    316 SST
  • Diagnostics
    Basic Diagnostics, Loop Integrity
  • Certifications/Approvals
    NACE®, hazardous location, see full specs for complete list of certifications
  • Update Rate
    1 sec. to 60 min., user selectable
  • Power Module Life
    Up to 10-year life, field replaceable (order separately)
  • Wireless Range
    Internal antenna (225 m)