These three are all part of the Rosemount 3051CF series differential pressure flowmeters, and the core differences lie in the measuring elements and applicable pipe diameters.
1. 3051CFA - Annubar Flowmeter
* Measuring Element: Insert-type T-type Pitot Tube
* Pipe Diameter: DN50 - DN900 (Large Pipe Diameter)
* Features:
Insert installation, minimal pressure loss
Can be installed and disassembled online
Suitable for large pipeline gases, steam, and liquids
* Application Scenarios: Large pipe diameter, energy saving, renovation projects
2. 3051CFC - Compact Adjustable Orifice Plate
* Measuring Element: Conditioning Orifice
* Pipe Diameter: DN15 - DN50 (Medium and Small Pipe Diameters)
* Features:
Extremely short straight pipe sections (2D before and 1D after)
Anti-interference, stable accuracy
Integrated compact type
* Application Scenarios: Space is limited, insufficient straight pipe sections, complex working conditions
3. 3051CFP - Integrated Orifice Plate Flowmeter
* Measuring Element: Self-centering Standard Orifice Plate
* Pipe Diameter: DN15 - DN40 (Special for Small Pipe Diameters)
* Features:
Factory-installed entire pipe, high accuracy (1.75%)
Optimal for small diameters, no leakage
Ready for installation
* Application Scenarios: Small diameters, high accuracy, chemical / water treatment
