Emerson Rosemount 2051CF series User manual

Quick Start Guide
00825-0100-4107, Rev FC
May2023
Rosemount™ 2051 Pressure
Transmitter and Rosemount 2051CF
Series Flow Meter
with 4–20 mA HART® and 1–5 Vdc Low
Power HART Protocol (Revision 5 and 7)

Safety messages
This guide provides basic guidelines for this product. It does not provide instructions
for configuration, diagnostics, maintenance, service, troubleshooting, Explosion-proof,
Flameproof, or intrinsically safe (I.S.) installations.
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 installation.
Before connecting a handheld communicator in an explosive atmosphere, be sure 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.
WARNING
Process leaks could result in death or serious injury.
Install and tighten process connectors before applying pressure.
Do not attempt to loosen or remove flange bolts while the transmitter is in service.
WARNING
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.
Before connecting a handheld communicator in an explosive atmosphere, be sure 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.
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 in protecting
your system. Restrict physical access by unauthorized personnel to protect end users’ assets.
This is true for all systems used within the facility.
Quick Start Guide May2023
2 Emerson.com/Rosemount

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.
WARNING
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.
NOTICE
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.
Contents
System readiness......................................................................................................................... 5
Mount the transmitter.................................................................................................................6
Rotate housing........................................................................................................................... 13
Set the switches......................................................................................................................... 14
Connect the wiring and power up........................................................................................... 16
Verifying configuration............................................................................................................. 19
Zero trim the transmitter..........................................................................................................23
Safety instrumented systems...................................................................................................27
Rosemount 2051 product certifications..................................................................................28
May2023 Quick Start Guide
Quick Start Guide 3

Quick Start Guide May2023
4 Emerson.com/Rosemount

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.
Related information
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, Emerson.com/DeviceInstallKits or FieldCommGroup.org.
May2023 Quick Start Guide
Quick Start Guide 5

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 on the top or side of the line.
2. Mount beside or above the taps.
Quick Start Guide May2023
6 Emerson.com/Rosemount

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.
May2023 Quick Start Guide
Quick Start Guide 7

2.4 Panel and pipe mounting
Figure 2-1: Panel and pipe mounting
Panel mount(1) Pipe mount
Coplanar flange
Traditional flange

Rosemount 2051T
(1) 5/16 × 1½ panel bolts are customer supplied.
2.5 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
Quick Start Guide May2023
8 Emerson.com/Rosemount

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 (CS) or stainless steel (SST). 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 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 2-1 for initial torque value.
3. Torque the bolts to the final torque value using the same
crossing pattern.
May2023 Quick Start Guide
Quick Start Guide 9

See Table 2-1 for final torque value.
4. Verify the flange bolts are protruding through the sensor
module bolt holes before applying pressure.
Table 2-1: Torque values for the flange and flange adapter bolts
Bolt
material
Head markings Initial
torque
Final torque
CS
B7M

300 in-lb 650 in-lb
SST
316
316
316
SW
316
STM
316
R
B8M

150 in-lb 300 in-lb
2.6 O-rings
The two styles of Rosemount flange adapters (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.
Quick Start Guide May2023
10 Emerson.com/Rosemount

Figure 2-3: O-rings
A. Flange adapter
B. O-ring
C. PFTE based
D. Elastomer
NOTICE
Replace PTFE O-rings if you remove the flange adapter.
2.7 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.
2.8 In-line gauge transmitter orientation
The low side pressure port (atmospheric reference) on the in-line
gauge 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.)
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.
May2023 Quick Start Guide
Quick Start Guide 11

Figure 2-4: In-line gauge low side pressure port
A
A. Pressure port location
Quick Start Guide May2023
12 Emerson.com/Rosemount

3 Rotate housing
To improve field access to wiring or to better view the optional LCD
display:
Procedure
1. Loosen the housing rotation set screw using a 5/64 -in. hex
wrench.
Figure 3-1: Housing rotation
A
A. Housing rotation set screw (5/64-in.)
2. Rotate the housing clockwise to the desired location.
3. If the desired location cannot be achieved due to thread
limitation, 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.
May2023 Quick Start Guide
Quick Start Guide 13

4 Set the switches
Set alarm and security switch configuration before installation as
shown in Figure 4-1.
Figure 4-1: Transmitter electronics board
Without LCD display meter With LOI/LCD display
B
A
A. Alarm
B. Security
•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 ( ).
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.
WARNING
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.
Quick Start Guide May2023
14 Emerson.com/Rosemount

WARNING
The cover must be fully engaged to comply with explosion-
proof requirements.
May2023 Quick Start Guide
Quick Start Guide 15

5 Connect the wiring and power up
Figure 5-1: Transmitter wiring diagrams (4–20 mA)
Aluminum
Polished 316 stainless steel (SST)
A. 24 Vdc supply
B. RL ≥ 250
C. Current meter (optional)
Use shielded twisted pair cable for best results.. Use 24 American
Wire Gauge (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.
Quick Start Guide May2023
16 Emerson.com/Rosemount

WARNING
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.
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.
NOTICE
Emerson does not recommend using a pin or a ferrule wire
terminal, 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 Grounding for
transient terminal block for grounding instructions.
7. Plug and seal unused conduit connections.
May2023 Quick Start Guide
Quick Start Guide 17

8. Reattach the transmitter covers.
Emerson recommends tightening the cover until there is no
gap between the cover and the housing.
The covers must only be capable of being released or removed
with the aid of a tool to comply with applicable ordinary
locations requirements.
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.
Emerson recommends using 18 American Wire Gauge (AWG) or
larger wire to connect housing ground to earth ground (internal or
external).
NOTICE
The Rosemount 2051HT polished 316 stainless steel (SST) housing
only provides ground termination inside the terminal compartment.
Quick Start Guide May2023
18 Emerson.com/Rosemount

6 Verifying configuration
Verify the configuration using any HART®-capable configuration tool
or local operator interface (LOI) - option code M4. Configuration
instructions for a handheld communicator and LOI are included in
this section.
6.1 Verify configuration with a handheld communicator
Prerequisites
Install a Rosemount 2051 device driver (DD) on the handheld
communicator to verify configuration.
Fast Key sequences for the latest DD are shown in Table 6-1. For
Fast Key sequences using legacy DDs, contact your local Emerson
representative.
NOTICE
Emerson recommends installing the latest DD to access the complete
functionality. Visit Emerson.com/FieldCommunicator for information
on updating the DD library.
Procedure
Verify device configuration using the Fast Key sequences in Table 6-1.
A check (✓) indicates the basic configuration parameters. At
minimum, these verify these parameters as part of configuration and
startup.
Table 6-1: Device Revision 9 and 10 (HART® 7), DD Revision 1 Fast
Key sequence
Function 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
May2023 Quick Start Guide
Quick Start Guide 19

Table 6-1: Device Revision 9 and 10 (HART® 7), DD Revision 1 Fast
Key sequence (continued)
Function 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 Verify configuration with local operator interface
(LOI)
You can use the optional LOI to condition 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.
Quick Start Guide May2023
20 Emerson.com/Rosemount