Rosemount  Annubar Flowmeter 485 Annubar Primary combined with the 3051S or 3095 MultiVariable transmitter

Quick Detail:

• Innovative slot and T-shape design increases accuracy to ±0.75%
• Wide variety of mounting configurations
• Integral manifold head allows direct mounting of DP transmitters
• Flo-Tap design allows installation without system shutdown
• Ideal fluid types: liquid, gas, and steam

Description:

Industry leading integrated DP flowmeters
By integrating pressure transmitter electronics with the Annubar
Averaging Pitot Tube (APT), Rosemount provides the highest
performing insertion DP flowmeter. This fully integrated flowmeter
eliminates the need for fittings, tubing, valves, adapters,
manifolds, and mounting brackets, thereby reducing welding and
installation time.
Improved performance with innovative measuring
techniques
The Annubar’s frontal slot design and revolutionary shape improve
the accuracy and repeatability of every flow measurement point.
Tight process control is gained by increased signal strength and
reduced signal noise.
Real-time mass flow measurements are available with
the integral temperature sensor design
The patented T-shaped sensor includes a sealed,
pressure-retaining thermowell that permits mass flow in all line
sizes with a single pipe penetration. Multivariable technology in
gas and steam applications compensates for pressure and
temperature variations, which can cause significant flow errors.
Plant uptime is increased with the maintenance-free
design
The Annubar sensor is designed to prevent wear and blockage in
the pipe. The electronics are the most stable in the industry and
allows up to 10 year calibration cycles, providing significant
maintenance savings.
Energy savings gained through minimal permanent
pressure loss
The non-constricting design of the Annubar sensor creates
minimal blockage in the pipe, which reduces permanent pressure
loss. Permanent pressure loss can be converted directly into
energy savings in the form of compressor cost for gas, electrical
cost for pumping liquids, and fuel costs for generating steam.

Applications:

Annubar Flowmeter Series: Rosemount 3051SFA
ProBar®, 3095MFA Mass ProBar®, 485, and 285
The state-of-the-art, fifth generation Rosemount 485 Annubar
combined with the 3051S or 3095 MultiVariable transmitter creates
an accurate, repeatable and dependable insertion-type flowmeter.
The Rosemount 285 provides a commercial product offering for
your general purpose applications.

Specifications:

Performance
Performance Statement Assumptions
Measured pipe I.D.
Discharge Coefficient Factor
±0.75% of flow rate
Repeatability
±0.1%
Line Sizes
• Sensor Size 1: 2-in. to 8-in. (50 to 200 mm)
• Sensor Size 2: 6-in. to 96-in. (150 to 2400 mm)
• Sensor Size 3: 12-in. to 96-in. (300 to 2400 mm)

Sizing
Contact an Emerson Process Management representative for
assistance. A Configuration Data Sheet is required prior to order
for application verification.
Flow Turndown
10:1or better
Annubar Sensor Surface Finish
The front surface of the Annubar primary is textured for high
Reynolds number applications (typically gas and steam). The
surface texture creates a more turbulent boundary layer on the
front surface of the sensor. The increased turbulence produces a
more predictable and repeatable separation of flow at the edge of
the sensor. The appropriate surface finish will be determined for
each application by the Emerson Process Management sizing
program, Instrument Toolkit software.

Functional
Service
• Liquid
• Gas
• Steam
Process Temperature Limits
Direct Mount Transmitter
• 500 °F (260 °C)
• 750 °F (398 °C) when used with a direct mount, high
temperature 5-valve manifold (Transmitter Connection
Platform code 6)
Remote Mount Transmitter
• 1250 °F (677 °C) – Hastelloy Sensor Material
• 850 °F (454 °C) – Stainless Steel Sensor Material
Pressure and Temperature Limits(1)
Direct Mount Transmitter
• Up to 600# ANSI (1440 psig at 100 °F (99 bar at 38 °C))
• Integral temperature measurement is not available with
Flanged mounting type greater than class 600
Remote Mount Transmitter
• Up to 2500# ANSI (6000 psig at 100 °F (416 bar at 38 °C))

Competitive Advantage:

Rosemount 485 Annubar Primary Element utilizes a T-shaped sensor design that
offers best in class accuracy and performance.
• Up to 0.75% Flow Rate Accuracy
• Lowest permanent pressure loss of any DP Flowmeter
• Available in 2 to 96-in. (50 - 2400 mm) line sizes