Rosemount 2051 Differential Pressure Flow Transmitter

Designed to provide industry-standard performance, the Rosemount 2051 Differential Pressure Flow Transmitter offers dependable differential pressure (DP) flow measurements. For easy installation, this DP flow transmitter can be pre-assembled to various primary elements. This safety-certified transmitter also features a local operator interface (LOI) with easy-to-use menus and built-in configuration buttons for device commissioning without tools.

 Rosemount Coplanar™ platform enables integration of primary elements, manifolds, and remote seal solutions
 Best in Class performance with up to 0.05% high accuracy option
 IEC 62591 (WirelessHART®) Protocol enables cost effective installations
 Local Operator Interface (LOI) offers easy to use configuration capabilities at the transmitter
 Protocols available include HART® 4–20 mA, FOUNDATION™ Fieldbus, PROFIBUS® PA, HART 1–5 Vdc Low Power
 Selectable HART Revision prepares your plant for the latest HART capabilities while ensuring seamless integration with today’s systems
 SIL2/3 safety certification to IEC 61508 is available with the full 4–20 mA HART offering to simplify compliance

Rosemount 2051 Differential Pressure Flow Transmitter


Up to 5-year limited warranty
Up To 100:1
Measurement Range
Up to 2000 psi (137,9 bar) differential
Differential pressure, scaled variable
Communication Protocol
4-20 mA HART®, WirelessHART®, FOUNDATION™ Fieldbus, PROFIBUS®, 1-5 V Low Power HART®
Process Wetted Material
316L SST, Alloy C-276, Tantalum
Basic Diagnostics
SIL 2/3 certified to IEC 61508 by an independent 3rd party, NSF, NACE®, hazardous location, see full specs for complete list of certifications


  • Available pre-assembled to primary elements for an installation-ready flow solution that ensures reliable performance
  • Complete flow assemblies are leak-tested and calibrated to reduce leak points up to 70% and simplify installation
  • Local operator interface offers easy-to-use menus and built-in configuration buttons for streamlined commissioning
  • Performance up to 0.05% of span accuracy
  • SIL 2/3 certified to IEC 61508 (via 3rd party) and prior-use certificate of FMEDA data for safety installations

Rosemount 2051 Pressure Transmitter product offering

Foundation of reliable measurement
 Differential, gage, and absolute pressure measurement
 Select from an extensive offering of DP Flowmeters, liquid level, manifolds and flanges
 Available with variety of protocols and materials

Best-in-class capabilities extended to IEC 62591 (WirelessHART)
 Cost effectively implement wireless on the industry’s most proven platform
 Optimize safety with the industry’s only intrinsically safe power module
 Eliminate wiring design and construction complexities to lower costs by 40–60 percent
 Quickly deploy new pressure, level, and flow measurements in 70 percent less time

Innovative, integrated DP Flowmeters
 Fully assembled and leak tested for out-of-the-box installation
 Reduce straight pipe requirements, lower permanent pressure loss, and achieve accurate measurement in small line sizes
 Up to two percent volumetric flow accuracy at 5:1 turndown

Proven, reliable, and innovative DP Level technologies
 Connect to virtually any process with a comprehensive offering of process connections, fill fluids, direct mount or capillary connections and materials.
 Quantify and optimize total system performance with QZ option.
 Optimize level measurement with cost efficient Tuned-System™ Assemblies

Instrument manifolds — quality, convenient, and easy
 Designed and engineered for optimal performance with Rosemount transmitters
 Save installation time and money with factory assembly
 Offers a variety of styles, materials, and configurations