Rosemount Compact Orifice Flowmeters
3051SFC, 3095MFC, 405P
It’s no coincidence that orifice plates are still the most popular flow technology. They provide reliable and accurate flow measurement for gas, liquid and steam applications. Compact Orifice flowmeter installations are straightforward and affordable.
The Rosemount 405P Compact Orifice Flowmeter is designed for closed loop control and general purpose monitoring applications. This design lowers the total installed cost of DP Flow measurement points eliminating the need for fittings, impulse tubing, valves, adapters and manifolds by providing a single device packaged together for simplified installation. By integrating Rosemount pressure transmitters with the 405 Compact Orifice primary element, we deliver the highest performing Flowmeters which arrive assembled, calibrated, pressure tested, and ready to install.
Features of the Rosemount Compact Orifice Flowmeter include:
- Available up to ANSI 600# pressure rating
- Follows industry standard utilizing ASME and ISO corner tap design
- Installation between existing raised-faced flanges
- Self centering ring ensure optimal accuracy while improving installation
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Proven Technology
Orifice technology is time-tested with established standards for manufacture and use. Performance under varied installation and process conditions is well documented. |
Minimized Installation Errors
Rosemount orifice flowmeters facilitate proper installation to maximize performance.
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Alignment mechanisms ensure centering |
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Improper centering can cause up to a ±5.0% error in small line sizes | |
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| The Most Specified Flow Device |
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Well-known technology |
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Industry standards exist |
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Flexible mounting configurations |
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Highly repeatable |
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Excellent response time |
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No inherent low-flow cut off |
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Field calibrated |
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Two-wire | |
Reduced Total Cost of Ownership
Rosemount orifice flowmeters reduce capital and operating expenditures and are more reliable.
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Integrated components lower installed costs |
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Direct mounting eliminates maintenance-intensive impulse lines | |
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- Less expensive than an orifice plate installation
- Accurate and repatable
- Centering mechanism
- Based on ASME / ISO corner tap design
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| Fully Integrated Flowmeter |
Rosemount 3051SFC
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Rosemount 3095MFC
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| Accuracy |
Ultra for Flow Up to ± 1.25 % of flow rate, 14:1 flow turndown
Classic MV ± 1.30 % of flow rate, 8:1 flow turndown |
± 1.50% of mass flow rate, 8:1 flow turndown
Ultra for Flow ±1.40 % of flow rate, 10:1 flow turndown |
| Repeatability |
± 0.1 % |
± 0.1 % |
| Output |
4-20mA signal based on HART® Communication
FOUNDATION™ fieldbus. |
4-20mA signal based on HART® Communication
FOUNDATION™ fieldbus |
| Long Term Stability |
Up to 10-year stability |
Up to 10-year stability |
| Warranty |
Up to 12-year limited warranty |
Up to 12-year limited warranty |
| Line Sizes |
2-in (50 mm)
3-in (80 mm)
4-in (100 mm)
6-in (150 mm)
8-in (200 mm)
10-in (250 mm)
12-in (300 mm) |
2-in (50 mm)
3-in (80 mm)
4-in (100 mm)
6-in (150 mm)
8-in (200 mm)
10-in (250 mm)
12-in (300 mm) |
| Complete Specifications (PDF @ 2.77Mb) |
The Rosemount 405P Compact Orifice Flowmeter is the ideal solution for closed loop and general purpose monitoring applications. It is designed to save money with easy installation and tight process control.
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Easy Installation
The Rosemount 405P Compact Orifice Flowmeter was designed to make installations easier for orifice applications.
- The compact design allows it to be installed between existing flange up to ANSI B16.5 600# or DIN PN100
- The self-centering mechanism allows proper centering to reduce error
- Direct mounting eliminates impulse lines
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Tight Process Control
The rapid time response characteristics inherent in the close coupled design of the 405P Compact Orifice Flowmeter enable tighter process controls.
- Multivariable technology makes the solution easy
- Direct Mounting eliminates impulse lines
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| Primary Element |
405P Compact Orifice
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| Service |
Liquid, Gas, Steam |
| Accuracy |
Up to ±1.25% of flow rate |
| Operating Process Temperature Limits |
Standard (direct/remote mount):
• -40 to 450 °F (-40 to 232 °C)
Extended (remote mount only with option code T):
• -148 to 850 °F (-100 to 454 °C) |
| Line Sizes |
2-in (50 mm)
3-in (80 mm)
4-in (100 mm)
6-in (150 mm)
8-in (200 mm)
10-in (250 mm)
12-in (300 mm) | |
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