Emerson Rosemount 485 Annubar User manual

Quick Start Guide
00825-0700-4809, Rev BA
June 2016
Rosemount™485 Annubar™Threaded
Assembly

June 2016
2
Quick Start Guide
NOTICE
This guide provides basic guidelines for Rosemount 485. 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 EmersonProcess.com/Rosemount.
If the Rosemount 485 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.
Process leaks may cause harm or result in death. To avoid process leaks, only use packings designed to seal
with the recommended torque value 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 . . . . . . . . . . . . . . . . . . 5
Drill sensor holes . . . . . . . . . . . . . . . . . . . . . . . . 11
Prepare for welding . . . . . . . . . . . . . . . . . . . . . . 11
Weld the mounting hardware . . . . . . . . . . . . . 12
Insert the Rosemount Annubar Sensor . . . . . 12
Product certifications . . . . . . . . . . . . . . . . . . . . 15

Quick Start Guide
3
June 2016
Figure 1. Rosemount 485 Annubar Threaded Assembly Exploded View
Table 1. Isolation Valves
A. See Figure 2 for detail.
B. Remote mount connection with isolation valves
C. Integrated valve low (VL)
D. Integrated valve high (VH)
E. 2⫻Elbows
F. Threaded weld coupling
G. Remote mount connection
Name Description Position Purpose
VH Integrated Isolation
Valve High(1)
1. High pressure
Letter “H” side of the
Remote Mount Connection Isolates high side or low side pressure
from the process
VL Integrated Isolation
Valve Low(2)
2. Low pressure
Letter “L” side of the Remote
Mount Connection
A
B
E
D
F
C
G
F
A
E

June 2016
4
Quick Start Guide
Figure 2. Rosemount 485 Annubar Threaded Packing Assembly Detail
Exploded View(1)
A. 3⫻Packaging rings
B. Follower
C. Nut
D. Retaining ring
E. Rosemount 485 Annubar Sensor
1. Image scale = 3/2.
A
E
D
C
B

Quick Start Guide
5
June 2016
1.0 Location and orientation
Correct orientation and straight run requirements must be met for accurate and
repeatable flow measurements. Refer to Table 2 for minimum pipe diameter
distances from upstream and downstream disturbances.
Table 2. Straight Run Requirements
In plane____________Out of plane Upstream pipe diameters
Downstream
pipe diameters
Without
straightening
vanes
With straightening
vanes
In
plane
A
Outof
plane
A
A’ CC’ B
1
8
N/A
10
N/A
N/A
8
N/A
4
N/A
4
4
4
2
11
N/A
16
N/A
N/A
8
N/A
4
N/A
4
4
4
3
23
N/A
28
N/A
N/A
8
N/A
4
N/A
4
4
4
4
12
N/A
12
N/A
N/A
8
N/A
4
N/A
4
4
4

June 2016
6
Quick Start Guide
Note
Consult the factory for instructions regarding use in square or rectangular
ducts.
If proper lengths of straight run are not available, position the mounting such
that 80% of the run is upstream and 20% is downstream. This will result in
degraded accuracy.
Use straightening vanes to reduce the required straight run length.
Row 6 in Table 2 applies to gate, globe, plug, and other throttling valves that
are partially opened, as well as control valves.
1.1 Misalignment
Rosemount 485 installation allows for a maximum misalignment of 3°.
Figure 3. Misalignment
5
18
N/A
18
N/A
N/A
8
N/A
4
N/A
4
4
4
6
30
N/A
30
N/A
N/A
8
N/A
4
N/A
4
4
4
33
3

Quick Start Guide
7
June 2016
1.2 Flowmeter orientation
Figure 4. Flowmeter Orientation for Liquid
Remote mount; for low temperature (<450 °F/232 °C)
Horizontal liquid Vertical liquid(1)
1. Downward flow is not recommended.
Remote mount; for high temperature (<600 °F/315 °C)
Horizontal liquid Vertical liquid(1)
45
45
Recommended
Zone 30 30 Recommended
Zone 30
Flow
360
Flow
45
45
Recommended
Zone 30 30
Recommended
Zone 30
Flow
360
Flow

June 2016
8
Quick Start Guide
Figure 5. Flowmeter Orientation for Gas
Remote mount; for low temperature (<450 °F/232 °C)
Horizontal gas Vertical gas
Remote mount; for high temperature (<600 °F/315 °C)
Horizontal gas Vertical gas
45
Recommend Zone 90
45
Flow
360
Flow
45
Recommend Zone 90
45
Flow
360
Flow

Quick Start Guide
9
June 2016
Figure 6. Flowmeter Orientation for Steam
Remote mount; for low temperature (<450 °F/232 °C)
Horizontal steam Vertical steam(1)
1. Downward flow is not recommended.
Remote mount; for high temperature (<600 °F/315 °C)
Horizontal steam Vertical steam(1)
45
45
Recommended
Zone 30 30 Recommended
Zone 30
Flow
360
Flow
45
45
Recommended
Zone 30 30
Recommended
Zone 30
Flow
360
Flow

June 2016
10
Quick Start Guide
1.3 Top mounting the flowmeter for steam
Top mounting for steam applications is an alternate mounting option in some
cases. Consult Rosemount Customer Central for instructions regarding steam on
top mounting. Top mounting in steam is an alternative mounting method for
steam installations that can be used if there are space restrictions or other
concerns. This installation method is intended for applications that run with
limited interruptions or shutdowns. Also, top mounting can reduce or eliminate
the need for heat tracing in outdoor applications that do not experience
shutdowns during cold weather.
Figure 7. Remote Mount; Horizontal Top Mounting for Steam
This orientation can be used for any steam temperature. The impulse piping
should slope up slightly from the instrument connections on the Rosemount
Annubar to the cross fittings, allowing condensate to drain back into the pipe.
From the cross fittings, the impulse piping should be routed downward to the
transmitter and the drain legs. The transmitter should be located below the
instrument connections of the Rosemount Annubar primary element. Depending
on the environmental conditions, it may be necessary to insulate the mounting
hardware.
60° 60°
Recommended
Zone
60°