Rosemount 2051CF Series User manual

Quick Start Guide
00825-0100-4107, Rev DC
February 2019
Rosemount™ 2051 Pressure Transmitter
and Rosemount 2051CF Series
Flowmeter
with 4–20 mA HART® and 1–5Vdc Low
Power HART Protocol (Revision 5 and 7)

Safety messages
NOTICE
Read this manual before working with the product. For personal and system safety, and for optimum
product performance make sure you thoroughly understand the contents before installing, using, or
maintaining this product.
For technical assistance, contacts are listed below:
Customer Central
Technical support, quoting, and order-related questions. United States - 1-800-999-9307
(7:00 am to 7:00 pm CST) Asia Pacific- 65 777 8211Europe/Middle East/Africa - 49 (8153) 9390
North American Response Center
Equipment service needs.
1-800-654-7768 (24 hours—includes Canada)
Outside of these areas, contact your local Emerson™ representative.
CAUTION
The products described in this document are NOT designed for nuclear-qualified applications. Using
non-nuclear qualified products in applications that require nuclear-qualified hardware or products may
cause inaccurate readings.For information on Rosemount nuclear-qualified products, contact your
local Emerson Sales Representative.
WARNING
Explosions could result in death or serious injury.
Installation of this transmitter in an explosive environment must be in accordance with the appropriate
local, national, and international standards, codes, and practices. Review the approvals section of this
manual for any restrictions associated with a safe
•Before connecting a Field Communicator in an explosive atmosphere, ensure 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 may cause harm or result in death.
•Install and tighten process connectors before applying pressure.
•Do not attempt to loosen or remove flange bolts while the transmitter is in service.
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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2 Rosemount 2051 Pressure Transmitter Quick Start Guide

WARNING
•Before connecting a HART® communicator in an explosive atmosphere, ensure 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 may cause harm or result in death.
•Install and tighten process connectors before applying pressure.
WARNING
Replacement equipment or spare parts not approved by Emerson for use as spare parts could reduce
the pressure retaining capabilities of the transmitter and may render the instrument dangerous.
•Use only bolts supplied or sold by Emerson as spare parts.
•Refer to page 208 for a complete list of spare parts.
Improper assembly of manifolds to traditional flange can damage sensor module.
•For safe assembly of manifold to traditional flange, bolts must break back plane of flange web
(i.e., bolt hole) but must not contact sensor module housing.
Contents
System readiness........................................... 5
Mount the transmitter................................... 7
Housing rotation..........................................14
Set the switches...........................................15
Connect the wiring and power up................ 16
Verify configuration..................................... 19
Trim the transmitter.................................... 23
Safety instrumented systems.......................26
Rosemount™ 2051 Product Certifications.....27
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4 Rosemount 2051 Pressure Transmitter Quick Start Guide

1 System readiness
1.1 Confirm HART Revision capability
•If using HART based control or asset management systems, confirm the
HART capability of those systems prior to transmitter installation. Not all
systems are capable of communicating with HART Revision 7 protocol.
This transmitter can be configured for either HART Revision 5 or 7.
•For instructions on how to change the HART Revision of your transmitter,
see Switch HART Revision mode.
1.2 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,
EmersonProcess.com or Fieldbus.org.
1.2.1 Rosemount 2051 device revisions and drivers
Table 1-1 provides the information necessary to ensure you have the correct
device driver and documentation for your device.
Table 1-1: Rosemount 2051 Foundation Fieldbus Device Revisions and
Files
Device
Revision
(1)
Host Device driver
(DD)(2)
Obtain at Device driver
(DTM)
Manual
Document
Number
2 All DD4: DD Rev
1
Fieldbus.org EmersonProce
ss.com
00809-0200-4
101,
Rev BA or
newer
All DD5: DD Rev
1
Fieldbus.org
Emerson AMS™ Device
Manager V
10.5 or
higher: DD
Rev 2
EmersonProce
ss.com
Emerson AMS Device
Manager V 8
to 10.5: DD
Rev 1
EmersonProce
ss.com
Emerson 375/475: DD
Rev 2
FieldCommun
icator.com
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Table 1-1: Rosemount 2051 Foundation Fieldbus Device Revisions and
Files (continued)
Device
Revision
(1)
Host Device driver
(DD)(2)
Obtain at Device driver
(DTM)
Manual
Document
Number
1 All DD4: DD Rev
4
Fieldbus.org EmersonProce
ss.com
00809-0200-4
101,
Rev AA
All DD5: NA N/A
Emerson AMS Device
Manager V
8or higher:
DD Rev 2
EmersonProce
ss.com
Emerson 375/475: DD
Rev 2
FieldCommun
icator.com
(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 1-1: Installation Flowchart
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2 Mount the transmitter
2.1 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.
2.2 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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2.3 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.
Example
Figure 2-1: Panel and Pipe Mounting
Panel mount(1) Pipe mount
Coplanar flange
Traditional flange
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Rosemount 2051T
(1) × 1 panel bolts are customer supplied.
2.4 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
2-2 illustrates common transmitter assemblies with the bolt length required
for proper transmitter assembly.
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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 a local Emerson Process
Management 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. Finger tighten the bolts.
2. Torque the bolts to the initial torque value using a crossing pattern.
See Table 2-1 for initial torque value.
3. Torque the bolts to the final torque value using the same crossing
pattern. See Table 2-1 for final torque value.
4. Verify the flange bolts are protruding through the sensor module bolt
holes before applying pressure.
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Example
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
2.5 O-rings
The two styles of Rosemount flange adapters (Rosemount 1151 and
Rosemount 3051/2051/2024/3095) each require a unique O-ring (see Figure
2-3). 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 O-rings tend to cold
flow, which aids in their sealing capabilities.
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Figure 2-3: 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.
2.6 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.
2.7 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 2-4.)
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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.
Figure 2-4: In-line Gage Low Side Pressure Port
A
A. Pressure port location
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3 Housing rotation
To improve field access to wiring or to better view the optional LCD display:
Figure 3-1: Housing Rotation
A
A. Housing Rotation Set Screw (5/64-inch)
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. Re-tighten the housing rotation set screw to no more than 7 in-lbs
when desired location is reached.
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4 Set the switches
Set alarm and security switch configuration before installation as shown in
Figure 4-1.
•The alarm switch sets the analog output alarm to high or low.
•Default alarm is high.
•The security switch allows ( ) or prevents ( ) any configuration of the
transmitter.
•Default security is off ( ).
Use the following procedure to change the switch configuration:
Procedure
1. If the transmitter is installed, secure the loop, and remove power.
2. Remove the housing cover opposite the field terminal side. Do not
remove the instrument cover in explosive atmospheres when the
circuit is live.
3. Slide the security and alarm switches into the preferred position using
a small screwdriver.
4. Reattach the transmitter cover. The cover must be fully engaged to
comply with explosion-proof requirements.
Example
Figure 4-1: Transmitter Electronics Board
Without LCD display meter With LOI/LCD display
B
A
A. Alarm
B. Security
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5 Connect the wiring and power up
Figure 5-1: Transmitter Wiring Diagrams (4–20 mA)
Aluminum
Polished 316 SST
A. 24 Vdc supply
B. RL ≥ 250
C. Current meter (optional)
Shielded twisted pair cable should be used for best results. Use 24 AWG or
larger wire that does not exceed 5,000 ft. (1500 m) in length. If applicable,
install wiring with a drip loop. Arrange the drip loop so the bottom is lower
than the conduit connections and the transmitter housing.
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CAUTION
•Installation of the transient protection terminal block does not provide
transient protection unless the Rosemount 2051HT case is properly
grounded.
•Do not run signal wiring in conduit or open trays with power wiring, or
near heavy electrical equipment.
•Do not connect the powered signal wiring to the test terminals. Power
could damage the test diode in the terminal block.
Use the following steps to wire the transmitter:
Procedure
1. Remove the housing cover on the FIELD TERMINALS side.
2. Connect the positive lead to the “+” terminal (PWR/COMM) and the
negative lead to the “–” terminal.
3. Ensure full contact with Terminal Block screw and washer. When using
a direct wiring method, wrap wire clockwise to ensure it is in place
when tightening the terminal block screw.
Note
The use of a pin or a ferrule wire terminal is not recommended as the
connection may be more susceptible to loosening over time or under
vibration
4. Ground housing to fulfill local grounding regulations.
5. Ensure proper grounding. It is important the instrument cable shield
be:
•Trimmed close and insulated from touching the transmitter
housing
•Connected to the next shield if cable is routed through a junction
box
•Connected to a good earth ground at the power supply end
6. If transient protection is needed, refer to section “Grounding for
transient terminal block” for grounding instructions.
7. Plug and seal unused conduit connections.
8. Reattach the transmitter covers. It is recommended that the cover be
tightened until there is no gap between the cover and the housing.
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The covers must only be capable of being released or removed with
the aid of a tool to comply with applicable ordinary locations
requirements.
Example
Figure 5-2: Wiring
Aluminum Polished 316 SST
DP
A
B
D
E
C
DP
A
B
D
E
C
A. Minimize distance
B. Trim shield and insulate
C. Protective grounding terminal
D. Insulate shield
E. Connect shield back to the power supply ground
5.1 Grounding for transient terminal block
Ground termination is provided on the outside of the electronics housing and
inside the terminal compartment. These grounds are used when the transient
protection terminal blocks are installed. It is recommended that 18 AWG or
larger wire is used to connect housing ground to earth ground (internal or
external).
If the transmitter is currently not wired for power up and communication,
follow Connect the wiring and power up step Step 1 through Step 8. When
the transmitter is properly wired, refer to Figure 5-2 for internal and external
transient grounding locations.
Note
The Rosemount 2051HT polished 316 SST housing only provides ground
termination inside the terminal compartment.
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18 Rosemount 2051 Pressure Transmitter Quick Start Guide

6 Verify configuration
Verify the configuration using any HART capable configuration tool or Local
Operator Interface (LOI) - option code M4. Configuration instructions for a
Field Communicator and LOI are included in this step.
6.1 Verifying configuration with a Field Communicator
A Rosemount 2051 DD must be installed on the Field Communicator to verify
configuration. Fast Key sequences for the latest DD are shown in Table 6-1.
For Fast Key sequences using legacy DD's, contact your local Emerson™
representative.
Note
Emerson recommends installing the latest DD to access the complete
functionality. Visit Emerson.com/Field-Communicator for information on
updating the DD Library.
Procedure
1. Verify device configuration using the Fast Key sequences in Table 6-1.
2. A check (✓) indicates the basic configuration parameters. At
minimum, these parameters should be verified as part of configuration
and startup.
Example
Table 6-1: Device Revision 9 and 10 (HART7), DD Revision 1 Fast Key
Sequence
Function Fast Key Sequence
HART 7 HART 5
✓Alarm and Saturation
Levels
2, 2, 2, 5, 7 2, 2, 2, 5, 7
✓Damping 2, 2, 1, 1, 5 2, 2, 1, 1, 5
✓Range Values 2, 2, 2 2, 2, 2
✓Tag 2, 2, 7, 1, 1 2, 2, 7, 1, 1
✓Transfer Function 2, 2, 1, 1, 6 2, 2, 1, 1, 6
✓Units 2, 2, 1, 1, 4 2, 2, 1, 1, 4
Burst Mode 2, 2, 5, 3 2, 2, 5, 3
Custom Display
Configuration
2, 2, 4 2, 2, 4
Date 2, 2, 7, 1, 4 2, 2, 7, 1, 3
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Table 6-1: Device Revision 9 and 10 (HART7), DD Revision 1 Fast Key
Sequence (continued)
Function Fast Key Sequence
HART 7 HART 5
Descriptor 2, 2, 7, 1, 5 2, 2, 7, 1, 4
Digital to Analog Trim (4–
20 mA output)
3, 4, 2 3, 4, 2
Disable Configuration
Buttons
2, 2, 6, 3 2, 2, 6, 3
Rerange with Keypad 2, 2, 2, 1 2, 2, 2, 1
Loop Test 3, 5, 1 3, 5, 1
Lower Sensor Trim 3, 4, 1, 2 3, 4, 1, 2
Message 2, 2, 7, 1, 6 2, 2, 7, 1, 5
Scaled D/A Trim (4–20 mA
output)
3, 4, 2 3, 4, 2
Sensor Temperature/Trend 3, 3, 2 3, 3, 2
Upper Sensor Trim 3, 4, 1, 1 3, 4, 1, 1
Digital Zero Trim 3, 4, 1, 3 3, 4, 1, 3
Password 2, 2, 6, 5 2, 2, 6, 4
Scaled Variable 3, 2, 2 3, 2, 2
HART Revision 5 to HART
Revision 7 switch
2, 2, 5, 2, 3 2, 2, 5, 2, 3
Long Tag(1) 2, 2, 7, 1, 2 N/A
Find Device(1) 3, 4, 5 N/A
Simulate Digital Signal(1) 3, 4, 5 N/A
(1) Only available in HART Revision 7 mode.
6.2 Verifying configuration with LOI
The optional LOI can be used for commissioning the device. The LOI is a two-
button design with internal and external/rear buttons. On a polished stainless
steel housing, buttons are located internally both on the display and terminal
side of the transmitter. On an aluminum housing, buttons are located on the
display and externally underneath the top metal tag. To activate the LOI, push
any button. LOI button functionality is shown on the bottom corners of the
display. See Table 6-2 and Figure 6-2 for button operation and menu
information.
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20 Rosemount 2051 Pressure Transmitter Quick Start Guide