Emerson ROSEMOUNT 485 Annubar Pak-Lok User manual

Quick Start Guide
00825-0300-4809, Rev EC
May2023
Rosemount™ 485 Annubar™ Pak-Lok
Assembly

NOTICE
This guide provides basic guidelines for Rosemount 485 Annubar. It does not provide
instructions for configuration, diagnostics, maintenance, service, troubleshooting, Explosion-
proof, Flameproof, or Intrinsically Safe (I.S.) installations. Refer to Rosemount 485 Annubar
Reference Manual for more instruction. This manual is also available electronically on
Emerson.com/Rosemount.
If the Rosemount Annubar was ordered assembled to a Rosemount Pressure Transmitter,
see the following Quick Start Guides for information on configuration and hazardous
locations certifications:
Rosemount 3051S Series Pressure Transmitter and Rosemount 3051SF Series Flowmeter
Quick Start Guide.
Rosemount 3051S MultiVariable Transmitter and Rosemount 3051SF Series Flowmeter
MultiVariable Transmitter Quick Start Guide.
Rosemount 3051 Pressure Transmitter and Rosemount 3051CF Series Flowmeter Transmitter
Quick Start Guide.
Rosemount 2051 Pressure Transmitter and Rosemount 2051CF Series Flowmeter Transmitter
Quick Start Guide.
WARNING
Process leaks may cause harm or result in death. To avoid process leaks, only use gaskets
designed to seal with the corresponding flange and o-rings to seal process connections.
Flowing medium may cause the Rosemount 485 Annubar assembly to become hot and could
result in burns.
Contents
Location and orientation.............................................................................................................3
Drill sensor holes ...................................................................................................................... 12
Weld mounting hardware.........................................................................................................14
Insert the Rosemount Annubar .............................................................................................. 15
Mount the transmitter...............................................................................................................19
Product certifications................................................................................................................ 22
Declaration of Conformity........................................................................................................ 23
China RoHS................................................................................................................................. 27
Quick Start Guide May2023
2 Emerson.com/Rosemount

1 Location and orientation
Correct orientation and straight run requirements must be met for
accurate and repeatable flow measurements. Refer to Table 1-1 for
minimum pipe diameter distances from upstream disturbances.
Table 1-1: Straight Run Requirements
In plane Out of plane Upstream pipe diameters Downstream
pipe
diameters
Without
straightening
vanes
With
straightening
vanes
In
plane
A
Out
of
plane
A
A’ C C’ B
1

8 10 N/A N/A N/A 4
N/A N/A 8 4 4 4
2 11 16 N/A N/A N/A 4
N/A N/A 8 4 4 4
3  23 28 N/A N/A N/A 4
N/A N/A 8 4 4 4
4  12 12 N/A N/A N/A 4
May2023 Quick Start Guide
Quick Start Guide 3

Table 1-1: Straight Run Requirements (continued)
In plane Out of plane Upstream pipe diameters Downstream
pipe
diameters
Without
straightening
vanes
With
straightening
vanes
In
plane
A
Out
of
plane
A
A’ C C’ B
N/A N/A 8 4 4 4
5 18 18 N/A N/A N/A 4
N/A N/A 8 4 4 4
6 30 30 N/A N/A N/A 4
N/A N/A 8 4 4 4
Note
•Consult the factory for instructions regarding use in square or
rectangular ducts.
•“In plane A” means the sensor is in the same plane as the elbow.
“Out of plane A” means the bar is perpendicular to the plane of
the elbow.
•If proper lengths of straight run are not available, position the
mounting such that 80% of the run is upstream and 20% is
downstream.
•Use straightening vanes to reduce the required straight run
length.
Quick Start Guide May2023
4 Emerson.com/Rosemount

•Row 6 in Table 1-1 applies to gate, globe, plug, and other
throttling valves that are partially opened, as well as control
valves.
1.1 Exploded view drawings
Figure 1-1: Rosemount 485 Annubar Pak-Lok Assembly Exploded
View
F
A
B
C
D
E
(1)
A. Transmitter
B. Coplanar flange with drain vents
C. 2 x O-rings
D. Direct-mount transmitter connection with valves
E. Pak-Lok body
F. See Figure 1-2 for details.
(1) Transmitter and housing are shown for clarity purposes — only supplied if
ordered.
May2023 Quick Start Guide
Quick Start Guide 5

Figure 1-2: Rosemount 485 Annubar Pak-Lok Assembly Detail
Exploded View
A
B
C
D
E
F
G
A. Nuts
B. Follower
C. 3 x Packing rings
D. Studs
E. Compression plate
F. Retaining ring
G. Rosemount 485 Annubar Sensor
1.2 Misalignment
Rosemount 485 Annubar installation allows for a maximum
misalignment of 3°.
Quick Start Guide May2023
6 Emerson.com/Rosemount

Figure 1-3: Misalignment
±3° ±3°
±3°
May2023 Quick Start Guide
Quick Start Guide 7

1.3 Flowmeter Orientation
Figure 1-4: Flowmeter Orientation for Liquid
Direct mount
Horizontal liquid Vertical liquid(1)
45° 45°
30°
Recommended
zone 30°
Recommended
zone 30°
Flow
360°
Remote mount
Horizontal liquid Vertical liquid(1)

(1) Downward flow is not recommended.
Quick Start Guide May2023
8 Emerson.com/Rosemount

Figure 1-5: Flowmeter Orientation for Gas
Direct mount
Horizontal gas Vertical gas
45° 45°
Recommended
zone 90°
360°
Flow
Remote mount
Horizontal gas Vertical gas
May2023 Quick Start Guide
Quick Start Guide 9

Figure 1-6: Flowmeter Orientation for Steam
Direct mount
Horizontal steam Vertical steam(1)
45° 45°
30°
Recommended
zone 30°
Recommended
zone 30°
360°
Flow
Remote mount
Horizontal steam Vertical steam(1)

(1) Downward flow is not recommended.
Note
For steam applications with DP readings between 0.75 and 2 inH2O in
horizontal pipes, consider installing the primary element/flowmeter
mounting in the top mounting for steam configuration.
Quick Start Guide May2023
10 Emerson.com/Rosemount