Step 1: Mount the Transmitter
Step 2: Consider Housing Rotation
Step 3: Set Switches and Jumpers
Step 4: Connect Wiring and Power Up
Step 5: Verify Configuration
Step 6: Trim the Transmitter
Safety Instrumented Systems
Product Certifications
00825-0100-4801, Rev KB
December 2010
Rosemount 3051S
Rosemount 3051S Series Pressure Transmitter
with HART® Protocol
Rosemount 3051SF Series Flowmeter Transmitter
with HART
Beijing Rosemount Far East Instrument Co.,
Limited
No. 6 North Street, Hepingli, Dong Cheng District
Beijing 100013, China
T (86) (10) 6428 2233
F (86) (10) 6422 8586
This installation guide provides basic guidelines for Rosemount 3051S transmitters (reference
manual document number 00809-0100-4801). It also provides the basic electronics guidelines for the
3051SFA (reference manual document number 00809-0100-4809), 3051SFC (reference manual
document number 00809-0100-4810), and 3051SFP (reference manual document number
00809-0100-4686). It does not provide instructions for diagnostics, maintenance, service, or
troubleshooting. This document is also available electronically on www.rosemount.com.
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. Please review
the approvals section of the 3051S reference manual for any restrictions associated with a
safe installation.
• 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.
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.
Conduit/Cable Entries
• Unless marked, the conduit/cable entries in the transmitter housing use a
1
/2-14 NPT
thread form. Only use plugs, adapters, glands, or conduit with a compatible thread form
when closing these entries.
2
Quick Installation Guide
STEP 1: MOUNTTHE TRANSMITTER
00825-0100-4801, Rev KB
December 2010
Liquid Flow Applications
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.
Gas Flow Applications
1. Place taps in the top or side of the line.
2. Mount beside or above the taps.
Steam Flow Applications
1. Place taps to the side of the line.
2. Mount beside or below the taps.
3. Fill impulse lines with water.
Rosemount 3051S
3
Rosemount 3051S
STEP 1 CONTINUED...
Quick Installation Guide
00825-0100-4801, Rev KB
December 2010
Panel MountPipe Mount
PlantWeb™ Junction Box Remote Mount Display
Coplanar™ Flange
Traditional Flange
In-line
Housings
4
Quick Installation Guide
STEP 1 CONTINUED...
4 x 1.75-in. (44 mm)
4 x 2.88-in. (73 mm)
A. Transmitter with
Coplanar Flange
B. Transmitter with Coplana r
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
4 x 1.75-in. (44 mm)
4 x 1.50-in. (38 mm)
4 x 1.75-in. (44 mm)
4 x 2.25-in. (57 mm)
00825-0100-4801, Rev KB
December 2010
Rosemount 3051S
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 1 illustrates common transmitter assemblies with the bolt length
required for proper transmitter assembly.
Figure 1. Common Transmitter Assemblies
Bolts are typically carbon steel or stainless steel. Confirm the material by viewing the markings
on the head of the bolt and referencing Figure 2. If bolt material is not shown in Figure 2,
contact the local Emerson Process Management representative for more information.
Use the following bolt installation procedure:
1. 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.
2. Finger-tighten the bolts.
3. Torque the bolts to the initial torque value using a crossing pattern. See Figure 2 for initial
torque value.
4. Torque the bolts to the final torque value using the same crossing pattern. See Figure 2 for
final torque value.
5. Verify that the flange bolts are protruding through the isolator plate before applying pressure.
5
Quick Installation Guide
STEP 1 CONTINUED...
WARNING
Rosemount 3051S / 3051 / 2051 / 3095
Rosemount 1151
Flange Adapter
O-ring
Flange Adapter
O-ring
PTFE Based
Elastomer
PTFE
Elastomer
Rosemount 3051S
Figure 2. Torque values for the flange and flange adapter bolts
Bolt MaterialHead MarkingsInitial Torque Final Torque
00825-0100-4801, Rev KB
December 2010
Carbon Steel (CS) 300 in.-lbs.650 in.-lbs.
Stainless Steel (SST)150 in.-lbs.300 in.-lbs.
316
316
R
B8M
STM
316
B7M
316
SW
316
O-rings with Flange Adapters
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.
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.
6
Quick Installation Guide
STEP 1 CONTINUED...
STEP 2: CONSIDER HOUSING ROTATION
STEP 3: SET SWITCHESAND JUMPERS
Low side pressure port
(under neck label)
Housing Rotation Set
Screw (3/32-inch)
Alarm
Security
Meter/
Adjustment
Module
Security
Alarm
00825-0100-4801, Rev KB
December 2010
Rosemount 3051S
Inline Gage Transmitter Orientation
The low side pressure port (atmospheric reference) on the inline gage transmitter is located
under the sensor module neck label. (See Figure 3.)
Keep the vent path free of any obstruction, including but not limited to paint, dust, and lubrication
by mounting the transmitter so that any contaminants can drain away.
Figure 3. Inline Gage Transmitter
To improve field access to wiring or to better view the
optional LCD display:
1. Loosen the housing rotation set screw.
Figure 4. Transmitter Housing
Set Screw
PlantWebJunction Box
2. First rotate the housing clockwise to the desired location.
If the desired location cannot be achieved due to thread
limit, rotate the housing counter clockwise to the desired
location (up to 360° from thread limit).
3. Retighten the housing rotation set screw.
If alarm and security adjustment option is not installed, the transmitter will operate normally with
the default alarm condition alarm high and the security off.
Figure 5. Transmitter Switch and Jumper Configuration
PlantWebJunction Box
Slide the security and alarm switches into the
preferred position by using a small screwdriver.
(An LCD display or an adjustment module must
be in place to activate the switches.)
Pull the jumpers out and rotate 90° into
desired position to set the security and alarm.
7
Quick Installation Guide
STEP 4: CONNECT WIRINGAND POWER UP
RL 250
Power
Supply
Power
Supply
RL 250
Rosemount 3051S
Use the following steps to wire the transmitter:
1. Remove the housing cover labeled “Field Terminals.”
2. Connect the positive lead to the “+” terminal, and the negative lead to the “–” terminal.
NOTE
Do not connect the power across the test terminals. Power could damage the test diode in the
test connection. Twisted pairs yield best results. For single compartment housing (Junction Box
housing), shielded signal wiring should be used in high EMI/RFI environments. Use 24 AWG to
14 AWG wire and do not exceed 5,000 feet (1500 meters).
3. Plug and seal the unused conduit connection.
4. 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.
5. Replace the housing cover.
The figures below show the wiring connections necessary to power a 3051S and enable
communications with a hand-held Field Communicator.
Installation of the transient protection terminal block does not
provide transient protection unless the 3051S case is properly
grounded.
8
Quick Installation Guide
STEP 4 CONTINUED...
DP
Trim shield and
insulate
Insulate
Shield
Connect Shield Back to the
Power Supply Ground
Ground for
Transient
Protection
Minimize
Distance
Minimize
Distance
00825-0100-4801, Rev KB
December 2010
Rosemount 3051S
Signal Wiring Grounding
Do not run signal wiring in conduit or open trays with power wiring, or near heavy electrical
equipment. Grounding terminations are provided on the sensor module and inside the Terminal
Compartment. These grounds are used when transient protect terminal blocks are installed or to
fulfill local regulations. See Step 2 below for more information on how the cable shield should be
grounded.
1. Remove the Field Terminals housing cover.
2. Connect the wiring pair and ground as indicated in Figure 7.
a. The cable shield should:
• Be trimmed close and insulated from touching the transmitter housing.
• Continuously connect to the termination point.
• Be connected to a good earth ground at the power supply end.
Figure 7. Wiring
3. Replace the housing cover. It is recommended that the cover be tightened until there is no
gap between the cover and the housing.
4. Plug and seal unused conduit connections.
9
Quick Installation Guide
STEP 4 CONTINUED...
Rosemount 3051S
00825-0100-4801, Rev KB
December 2010
Remote Display Wiring and Power Up
The Remote Mount Display and Interface system consists of a local transmitter and a remote
mount LCD display assembly. The local 3051S transmitter assembly includes a Junction Box
housing with a three position terminal block integrally mounted to a sensor module. The remote
mount LCD display assembly consists of a dual compartment PlantWeb housing with a seven
position terminal block. See Figure 8 on page 11 for complete wiring instructions. The following is
a list of necessary information specific to the Remote Mount Display system:
• Each terminal block is unique for the remote display system.
• A 316 SST housing adapter is permanently secured to the remote mount LCD display
PlantWeb housing, providing an external ground and a means for field mounting with the
provided mounting bracket.
• A cable is required for wiring between the transmitter and remote mount LCD display. The
cable length is limited to 100 ft.
• 50 ft. (option M8) or 100 ft. (option M9) cable is provided for wiring between the transmitter
and remote mount LCD display. Option M7 does not include cable; see recommended
specifications below:
Cable type: Recommend Belden 3084A DeviceNet cable or Belden 123084A Armored
DeviceNet cable. Other comparable cable may be used as long as it has independent dual
twisted shielded pair wires with an outer shield. The Power wires must be 22 AWG minimum and
the CAN communication wires must be 24 AWG minimum.
Cable length: Up to 100 feet depending upon cable capacitance.
Cable capacitance: The capacitance from the CAN communications line to the CAN return line
as wired must be less than 5000 picofarads total. This allows up to 50 picofarads per foot for a
100 foot cable.
10
Quick Installation Guide
STEP 4 CONTINUED...
4-20 mA
(white) 24 AWG
(blue) 24 AWG
(black) 22 AWG
(red) 22 AWG
00825-0100-4801, Rev KB
December 2010
Intrinsic Safety Consideration: The transmitter assembly with remote display has been
approved with Belden 3084A DeviceNet cable. Alternate cable may be used as long as the
transmitter with remote display and cable is configured according to the installation control
drawing or certificate. Refer to appropriate approval certificate or control drawing in Appendix B
of the 3051S reference manual for remote cable IS requirements.
IMPORTANT
Do not apply power to the remote communications terminal. Follow wiring instructions carefully
to prevent damage to system components.
Figure 8. Remote Mount Display wiring diagram
Junction Box HousingRemote Mount Display
Rosemount 3051S
11
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