Emerson Rosemount 3051 User manual
Quick Start Guide
00825-0100-4001, Rev LA
March 2020
Rosemount™ 3051 Pressure Transmitter
and 3051CF Series Flow Meter
with 4-20 mA HART® and 1-5 Vdc Low
Power Protocol
Contents
About this guide...........................................................................................................................3
Mount the transmitter..................................................................................................................5
Housing rotation........................................................................................................................ 12
Set the jumpers..........................................................................................................................13
Connect the wiring and power up...............................................................................................14
Verify configuration................................................................................................................... 18
Trim the transmitter...................................................................................................................22
Safety Instrumented Systems (SIS).............................................................................................24
Product certifications................................................................................................................. 28
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2 Emerson.com/Rosemount
1 About this guide
This guide provides basic guidelines for Rosemount 3051 Transmitters. It
does not provide instructions for configuration, diagnostics, maintenance,
service, troubleshooting, Explosion-Proof, Flame-Proof, or intrinsically safe
(I.S.) installations. Refer to the Rosemount 3051 Reference Manual for more
instructions. This guide is also available electronically on Emerson.com/
Rosemount.
1.1 Safety messages
Before installing the transmitter, confirm the correct device driver is loaded
on the host systems.
Procedures and instructions in this section may require special precautions
to ensure the safety of the personnel performing the operations.
WARNING
Explosions
Explosions could result in death or serious injury.
Installation of this transmitter in an explosive environment must be in
accordance with the local, national, and international standards, codes,
and practices.
Before connecting a handheld communicator in an explosive
atmosphere, ensure that the instruments in the loop are installed in
accordance with intrinsically safe or non-incendive field wiring practices.
In an explosion-proof/flameproof installation, do not remove the
transmitter covers when power is applied to the unit.
Process leaks
Process leaks could result in death or serious injury.Process leaks may cause
harm or result in death.Process leaks may cause harm or result in death.
Install and tighten process connectors before applying pressure.
To avoid process leaks, only use the O-ring designed to seal with the
corresponding flange adapter.
Electrical shock
Electrical shock could cause death or serious injury.Electrical shock can result
in death or serious injury.Electrical shock can result in death or serious injury.
Avoid contact with the leads and terminals. High voltage that may be
present on leads can cause electrical shock.
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Quick Start Guide 3
WARNING
Conduit/cable entries
Unless marked, the conduit/cable entries in the transmitter housing use a
½–14 NPT thread form. Entries marked “M20” are M20 × 1.5 thread form.
On devices with multiple conduit entries, all entries will have the same
thread form. Only use plugs, adapters, glands, or conduit with a compatible
thread form when closing these entries.
When installing in a hazardous location, use only appropriately listed or Ex
certified plugs, glands, or adapters in cable/conduit entries.
Physical access
Unauthorized personnel may potentially cause significant damage to and/or
misconfiguration of end users’ equipment. This could be intentional or
unintentional and needs to be protected against.
Physical security is an important part of any security program and
fundamental to protecting your system. Restrict physical access by
unauthorized personnel to protect end users’ assets. This is true for all
systems used within the facility.
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2 Mount the transmitter
2.1 Liquid flow applications
Procedure
1. Place taps to the side of the line.
2. Mount beside or below the taps.
3. Mount the transmitter so that the drain/vent valves are oriented
upward.
2.2 Gas flow applications
Procedure
1. Place taps in the top or side of the line.
2. Mount beside or above the taps.
Note
Bracket required to support the transmitter and the ¼-in. tubing
going into the transmitter.
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Quick Start Guide 5
2.3 Steam flow applications
Procedure
1. Place taps to the side of the line.
2. Mount beside or below the taps.
3. Fill impulse lines with water.
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6 Emerson.com/Rosemount
2.5 Bolting considerations
If the transmitter installation requires assembly of the process flanges,
manifolds, or flange adapters, follow these assembly guidelines to ensure a
tight seal for optimal performance characteristics of the transmitters. Use
only bolts supplied with the transmitter or sold by Emerson as spare parts.
Figure 2-2 illustrates common transmitter assemblies with the bolt length
required for proper transmitter assembly.
Figure 2-2: Common Transmitter Assemblies
A
4 × 1.75-in.
(44 mm)
D
4 × 1.75-in.
(44 mm)
4 × 2.25-in.
(57 mm)
C
4 ×1.75-in.
(44 mm) 4 ×1.50-in.
(38 mm)
B
4 × 2.88-in.
(73 mm)
A. Transmitter with coplanar flange
B. Transmitter with coplanar flange and optional flange adapters
C. Transmitter with traditional flange and optional flange adapters
D. Transmitter with coplanar flange and optional manifold and flange
adapters
Bolts are typically carbon steel or stainless steel. Confirm the material by
viewing the markings on the head of the bolt and referencing .Table 2-1 If
bolt material is not shown in Table 2-1, contact the local Emerson
representative for more information.
2.5.1 Bolt installation
Note
Carbon steel bolts do not require lubrication and the stainless steel bolts are
coated with a lubricant to ease installation. However, no additional lubricant
should be applied when installing either type of bolt.
Procedure
1. Finger-tighten the bolts.
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8 Emerson.com/Rosemount
2. Torque the bolts to the initial torque value using a crossing pattern
(see Table 2-1 for torque values).
3. Torque the bolts to the final torque value using the same crossing
pattern (see Table 2-1 for torque values).
4. Verify that the flange bolts are protruding through the isolator plate
before applying pressure.
Table 2-1: Torque Values for the Flange and Flange Adapter Bolts
Bolt
material
Head markings Initial
torque
Final torque
Carbon Steel
(CS)
B7M
300 in-lb 650 in-lb
Stainless
Steel (SST)
316
316
316
SW
316
STM
316
R
B8M
150 in-lb 300 in-lb
March 2020 Quick Start Guide
Quick Start Guide 9
2.6 O-rings with flange adapters
WARNING
Failure to install proper flange adapter O-rings may cause process leaks,
which can result in death or serious injury. The two flange adapters are
distinguished by unique O-ring grooves. Only use the O-ring that is designed
for its specific flange adapter, as shown below.
Figure 2-3: O-ring Location
A
B
C
D
Rosemount 3051S/3051/2051
A. Flange adapter
B. O-ring
C. PFTE-based profile (square)
D. Elastomer profile (round)
Whenever the flanges or adapters are removed, visually inspect the O-rings.
Replace them if there are any signs of damage, such as nicks or cuts. If you
replace the O-rings, re-torque the flange bolts and alignment screws after
installation to compensate for seating of the PTFE O-ring.
2.7 Environmental seal for housing
For NEMA® 4X, IP66, and IP68 requirements, use thread sealing (PTFE) tape
or paste on male threads of conduit to provide a water and dust tight seal.
Consult factory if other ingress protection ratings are required.
Always ensure a proper seal by installing the electronics housing cover(s) so
that metal contacts metal. Use Rosemount O-rings.
For M20 threads, install conduit plugs to full thread engagement or until
mechanical resistance is met.
Quick Start Guide March 2020
10 Emerson.com/Rosemount
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