Emerson Rosemount 2051CF, Rosemount 2051 Quick Start Guide
Quick Start Guide
00825-0600-4101, Rev CA
March 2020
Rosemount™ 2051 Pressure Transmitter
and Rosemount 2051CF Series Flow
Meter
with FOUNDATION™ Fieldbus Protocol
Quick Start Guide March 2020
Contents
About this guide .......................................................................................................................... 3
System readiness......................................................................................................................... 5
Mount the transmitter..................................................................................................................7
Tagging......................................................................................................................................14
Housing rotation........................................................................................................................ 15
Set the switches......................................................................................................................... 16
Wire, ground, and power up.......................................................................................................18
Configure................................................................................................................................... 21
Zero trim the transmitter........................................................................................................... 28
Product certifications................................................................................................................. 29
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March 2020 Quick Start Guide
1 About this guide
This guide provides basic guidelines for Rosemount 2051 Pressure
Transmitters. It does not provide instructions for configuration, diagnostics,
maintenance, service, troubleshooting, Explosion-proof, Flameproof, or
intrinsically safe (I.S.) installations. Refer to Rosemount 2051 Reference
Manual for more instructions. This guide is also available electronically at
Emerson.com/Rosemount.
1.1 Safety messages
WARNING
Explosions could result in death or serious injury.
Installation of these transmitters in an explosive environment must be in
accordance with the appropriate local, national, and international standards,
codes, and practices. Review the approvals section of the Rosemount 2051
Reference Manual for any restrictions associated with a safe installation.
In an explosion-proof/flameproof installation, do not remove the transmitter
covers when power is applied to the unit.
Process leaks could result in death or serious injury.
To avoid process leaks, only use the O-ring designed to seal with the
corresponding flange adapter.
Electrical shock could cause death or serious injury.
Avoid contact with the leads and terminals. High voltage that may be
present on leads can cause electrical shock.
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.
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Quick Start Guide March 2020
WARNING
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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March 2020 Quick Start Guide
2 System readiness
2.1 Confirm correct device driver
• Verify the correct device driver (DD/DTM™) is loaded on your systems to
ensure proper communications.
• Download the correct device driver at your host vendor download site,
Emerson.com or Fieldbus.org.
2.1.1 Device revisions and drivers
Table 2-1 provides the information necessary to ensure you have the correct
device driver and documentation for your device.
Table 2-1: Rosemount 2051 FOUNDATION Fieldbus Device Revisions and
Files
Device
revision
(1)
2 All DD4: DD
1 All DD4: DD
Host Device
All DD5: DD
Emerson AMS Device
Emerson AMS Device
Emerson 375/475:
All DD5: NA N/A
Emerson AMS Device
driver
(2)
(DD)
Rev 1
Rev 1
Manager V
10.5 or
higher: DD
Rev 2
Manager V
8 to 10.5:
DD Rev 1
DD Rev 2
Rev 4
Manager V
8 or higher:
DD Rev 2
Obtain at Device driver
(DTM)
Fieldbus.org Emerson.com 00809-0200-
Fieldbus.org
Emerson.com
Emerson.com
FieldCommun
icator.com
Fieldbus.org Emerson.com 00809-0200-
Emerson.com
Reference
document
4101,
Rev BA or
newer
4101,
Rev AA
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Quick Start Guide March 2020
Table 2-1: Rosemount 2051 FOUNDATION Fieldbus Device Revisions and
Files (continued)
Device
revision
(1)
Host Device
driver
(2)
(DD)
Emerson 375/475:
DD Rev 2
Obtain at Device driver
(DTM)
FieldCommun
icator.com
Reference
document
(1) FOUNDATION Fieldbus device revision can be read using a FOUNDATION Fieldbus
capable configuration tool.
(2) Device driver file names use device and DD revision. To access functionality, the
correct device driver must be installed on your control and asset management
hosts, and on your configuration tools.
Figure 2-1: Installation Flowchart
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March 2020 Quick Start Guide
3 Mount the transmitter
3.1 Liquid applications
Procedure
1. Place taps to the side of the line.
2. Mount beside or below the taps.
3. Mount the transmitter so the drain/vent valves are oriented upward.
3.2 Gas applications
Procedure
1. Place taps in the top or side of the line.
2. Mount beside or above the taps.
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Quick Start Guide March 2020
3.3 Steam 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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March 2020 Quick Start Guide
Figure 3-1: Panel and Pipe Mounting
Panel mount
Coplanar flange
Traditional flange
(1)
Pipe mount
Rosemount 2051T
(1) × 1 panel bolts are customer supplied.
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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)
Quick Start Guide March 2020
3.4 Bolting considerations
If the transmitter installation requires assembly of the process flanges,
manifolds, or flange adapters, follow the 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 3-2 illustrates common transmitter assemblies with the bolt length
required for proper transmitter assembly.
Figure 3-2: Common Transmitter Assemblies
10
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 (CS) or stainless steel (SST). Confirm the
material by viewing the markings on the head of the bolt and referencing
Table 3-1. If bolt material is not shown in Table 3-1, contact a local Emerson
representative for more information.
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.
Use the following bolt installation procedure:
Procedure
1. Tighten the bolts by hand.
2. Torque the bolts to the initial torque value using a crossing pattern.
See Table 3-1 for initial torque value.
B7M
316
316
316
SW
316
STM
316
R
B8M
March 2020 Quick Start Guide
3. Torque the bolts to the final torque value using the same crossing
pattern. See Table 3-1 for final torque value.
4. Verify the flange bolts are protruding through the sensor module
bolt holes before applying pressure.
Table 3-1: Torque Values for the Flange and Flange Adapter Bolts
Bolt material Head markings Initial torque Final torque
CS
SST
300 in-lb 650 in-lb
150 in-lb 300 in-lb
3.5 O-rings
The two styles of Rosemount flange adapters (Rosemount
3051/2051/2024/3095) each require a unique O-ring (see Figure 3-3). Use
only the O-ring designed for the corresponding flange adapter.
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. When compressed, PTFE Orings tend to cold flow, which aids in their sealing capabilities.
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Quick Start Guide March 2020
Figure 3-3: O-rings
A. Flange adapter
B. O-ring
C. PFTE based
D. Elastomer
Note
You should replace PTFE O-rings if you remove the flange adapter.
3.6 Environmental seal for housing
Thread sealing (PTFE) tape or paste on male threads of conduit is required to
provide a water/dust tight conduit seal and meets requirements of NEMA
Type 4X, IP66, and IP68. Consult factory if other Ingress Protection ratings
are required.
For M20 threads, install conduit plugs to full thread engagement or until
mechanical resistance is met.
®
3.7
12
In-line gage transmitter orientation
The low side pressure port (atmospheric reference) on the in-line gage
transmitter is located in the neck of the transmitter, behind the housing. The
vent path is 360° around the transmitter between the housing and sensor.
(See Figure 3-4.)
Keep the vent path free of any obstruction, including but not limited to
paint, dust, and lubrication by mounting the transmitter so fluids can drain
away.
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March 2020 Quick Start Guide
Figure 3-4: In-line Gage Low Side Pressure Port
A. Pressure port location
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4 Tagging
4.1 Commissioning (paper) tag
To identify which device is at a particular location use the removable tag
provided with the transmitter. Ensure the physical device tag (PD tag field) is
properly entered in both places on the removable commissioning tag and
tear off the bottom portion for each transmitter.
Note
The device description loaded in the host system must be at the same
revision as this device.
Figure 4-1: Commissioning Tag
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A. Device revision
Note
The device description loaded in the host system must be at the same
revision as this device. The device description can be downloaded from the
host system website or Emerson.com/Rosemount by selecting Download
Device Drivers under Product Quick Links. You can also visit Fieldbus.org and
select End User Resources.
A
March 2020 Quick Start Guide
5 Housing rotation
To improve field access to wiring or to better view the optional LCD display
follow the procedure steps.
Figure 5-1: Housing Rotation
A. Housing rotation set screw (5/64 in.)
Procedure
1. Loosen the housing rotation set screw using a 5/64 -in. hex wrench.
2. Rotate the housing clockwise to the desired location.
3. If the desired location cannot be achieved due to thread limit, rotate
the housing counterclockwise to the desired location (up to 360°
from thread limit).
4. Retighten the housing rotation set screw to no more than 7 in-lbs
when desired location is reached.
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