Emerson Rosemount 485 Annubar User manual

Quick Start Guide
00825-0100-4809, Rev DC
June 2016
Rosemount™485 Annubar™Flanged
Assembly
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June 2016
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Quick Start Guide
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 EmersonProcess.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.
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. . . . . . . . . . . . . . . . . . . 4
Drill sensor holes . . . . . . . . . . . . . . . . . . . . . . . . . 8
Assemble and check fit-up . . . . . . . . . . . . . . . . . 9
Weld mounting hardware. . . . . . . . . . . . . . . . 11
Insert the Rosemount Annubar Sensor. . . . . . 12
Mount the transmitter. . . . . . . . . . . . . . . . . . . . 12
Product certifications . . . . . . . . . . . . . . . . . . . . 18
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Figure 1. Rosemount 485 Annubar Flange Assembly Exploded View(1)
Note
Use an appropriate pipe sealing compound rated for the service temperature on all
threaded connections.
1. Transmitter and housing are shown for clarity purposes – only supplied if ordered.
A. 2⫻O-rings
B. Direct mount transmitter connection with valves
C. Studs
D. Gasket
E. Nuts
F. Opposite side support
G. Transmitter
H. Coplanar flange with drain vents
I. Sensor flange
J. Mounting flange assembly
K. Rosemount 485 Annubar Sensor
A
B
C
D
E
F
G
H
I
J
K
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Quick Start Guide
1.0 Location and orientation
Correct orientation and straight run requirements must be met for accurate and
repeatable flow measurements. Refer to Table 1 for minimum pipe diameter
distances from upstream disturbances.
Table 1. 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
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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 sensor 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.
Row 6 in Table 1 applies to gate, globe, plug, and other throttling valves that
are partially opened, as well as control valves.
1.1 Misalignment
Rosemount 485 Annubar installation allows for a maximum misalignment of 3°.
Figure 2. 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
±3°
±3°±3°
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1.2 Horizontal orientation
For proper venting and draining, the sensor should be located in the upper half of
the pipe for air and gas applications. For liquid and steam applications, the sensor
should be located in the bottom half of the pipe. The maximum temperature for a
direct mounted transmitter is 500 °F (260 °C).
Figure 3. Horizontal Orientation
Note
For steam applications with DP readings between 0.75 and 2 inH2O in horizontal pipes, it is
recommended to install the primary element/flowmeter mounting above the pipe.
Liquid and steam Gas
Top mounting for steam
±45°
±45°
30° Recommended
zone 30°
Recommended
zone 30°
45°
45°
Recommended
zone 90°
30°
45° 45°
Recommended
zone 30°
Recommended
zone 30°
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1.3 Vertical orientation
The sensor can be installed in any position around the circumference of the pipe,
provided the vents are positioned properly for bleeding or venting. Optimal
results for liquid or steam are obtained when flow is up. For steam applications, a
90° spacer will be added to provide water legs to ensure the transmitter stays
within temperature limits. The maximum temperature for a direct mounted
transmitter is 500 °F (260 °C).
Figure 4. Vertical Orientation
Steam Liquid
Gas
360°
Flow
360°
Flow
360°
Flow
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Quick Start Guide
2.0 Drill sensor holes
1. Determine the sensor size based on the probe width (see Table 2).
Table 2. Sensor Size/Hole Diameter Chart
2. Depressurize and drain the pipe.
3. Select the location to drill the hole.
4. Determine the diameter of the hole to be drilled according to the
specifications in Table 2. Drill the mounting hole into the pipe with a hole saw
or drill. DO NOT TORCH CUT THE HOLE.
Sensor size Sensor width Hole diameter
10.590-in. (14,99 mm) 3/4-in. (19 mm) +1/32-in (0,8 mm) – 0.00
21.060-in. (26,92 mm) 15/16-in. (34 mm) +1/16-in. (1,6 mm) – 0.00
31.935-in. (49,15 mm) 21/2-in. (64 mm) +1/16-in. (1,6 mm) – 0.00
When drilling the mounting hole(s), Emerson™Process Management recommends the use of a magnetic drill
or pipe clamping fixture to safely drill the hole. Use appropriate personal protective equipment and
procedures when drilling and welding.
P/N: 28-109001-922 Rev. AC
Drill to Hole Size
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5. Although it is not commonly selected, if an opposite-side support model is
supplied, a second identically sized hole must be drilled opposite the first hole
so that the sensor can pass completely through the pipe. (To determine if you
have an opposite-side support model, measure the distance from the tip to
the first slot or hole. If the distance is greater than 1-in. (25,4 mm), it is the
opposite-side support model.) To drill the second hole, follow these steps:
a. Measure the pipe circumference with a pipe tape, soft wire, or string. (For
the most accurate measurement the pipe tape needs to be perpendicular to
the axis of flow.)
b. Divide the measured circumference by two to determine the location of the
second hole.
c. Re-wrap the pipe tape, soft wire, or string from the center of the first hole.
Then, using the number calculated in step b, mark the center of what will
become the second hole.
d. Using the diameter determined in step 4, drill the hole into the pipe with a
hole saw or drill. DO NOT TORCH CUT THE HOLE.
Note
Drill the hole 180° from the first hole for opposite- side support models.
6. Deburr the drilled holes on the inside of the pipe.
3.0 Assemble and check fit-up
For accurate measurement, use the following steps to ensure that Ports A and B
are equal distances from the inside walls of the pipe.
1. Assemble the Rosemount 485 to the mounting hardware with the gaskets and
bolts.
2. Hand tighten the bolts just enough to hold the position of the sensor centered
in the mounting hardware.
3. Measure the distance from the high point of the butt weld branch connection
to the first sensing hole, port B, then subtract 1/16-in (1,6 mm).
4. Measure the distance from the end of the transferred length in step 3to the
last sensing hole, port A.
5. Compare the numbers obtained in steps 3and 4.
Small discrepancies can be compensated for with the fit-up of the mounting
hardware. Large discrepancies may cause installation problems or error.
Drill the appropriate diameter hole
through the pipe wall.
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Figure 5. Fit-up Check for Rosemount 485 Annubar with Opposite-Side Support
Liquid or steam Gas
A. The same with 1/8-in. (3 mm)
B. Port A
C. Port B
D. Outer Diameter to Flange (ODF)
E. Pipe outside diameter
A
B
C
D
E
A
D
C
B
E
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