Emerson Rosemount 2051 User manual

Quick Start Guide
00825-0400-4101, Rev AD
October 2016
Rosemount™2051 Pressure Transmitter
and Rosemount 2051CF Series Flowmeter
with PROFIBUS®PA Protocol
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October 2016
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Quick Start Guide
NOTICE
This installation guide provides basic guidelines for Rosemount 2051 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 2051 PROFIBUS PA Reference Manual
for more instruction. This manual is also available electronically on EmersonProcess.com/Rosemount.
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 the Rosemount
2051 PROFIBUS PA 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 may cause harm or result in death.
To avoid process leaks, only use the O-ring designed to seal with the corresponding flange adapter.
Electrical shock can result in death or serious injury.
Avoid contact with the leads and the 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.
Contents
Mount the transmitter . . . . . . . . . . . . . . . . . . . . 3
Consider housing rotation . . . . . . . . . . . . . . . . . 7
Set jumpers and switches . . . . . . . . . . . . . . . . . . 8
Connect wiring and power up . . . . . . . . . . . . . . 8
Basic configuration . . . . . . . . . . . . . . . . . . . . . . 11
Trim the transmitter . . . . . . . . . . . . . . . . . . . . . 15
Product Certifications . . . . . . . . . . . . . . . . . . . 16
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1.0 Mount the transmitter
1.1 Liquid applications
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.
1.2 Gas applications
1. Place taps in the top or side of the line.
2. Mount beside or above the taps.
1.3 Steam applications
1. Place taps to the side of the line.
2. Mount beside or below the taps.
3. Fill impulse lines with water.
Flow
Flow
Flow
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Quick Start Guide
Figure 1. Mounting Options
Rosemount 2051C
Panel mount(1)
1. Panel bolts are customer supplied.
Pipe mount
Coplanar flange
Traditional flange
Rosemount 2051T
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October 2016
1.4 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 illustrates
common transmitter assemblies with the bolt length required for proper
transmitter assembly.
Figure 2. Common Transmitter Assemblies
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 1. If bolt material is
not shown in Table 1, 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
Table 1 for initial torque value.
4. Torque the bolts to the final torque value using the same crossing pattern. See
Table 1 for final torque value.
5. Verify that the flange bolts are protruding through the isolator plate before
applying pressure.
A
B
CD
4 × 1.75-in. (44 mm)
4 × 1.75-in.
(44 mm)
4 × 2.88-in. (73 mm)
4 × 1.75-in. (44 mm)
4 × 1.50-in.
(38 mm)
4 × 2.25-in.
(57 mm)
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1.5 O-rings with flange adapters
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.
Table 1. Torque Values for the Flange and Flange Adapter Bolts
Bolt material Head markings Initial torque Final torque
Carbon Steel (CS) 300 in-lb 650 in-lb
Stainless Steel (SST) 150 in-lb 300 in-lb
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:
A. Flange adapter
B. O-ring
C. PTFE based (profile is square)
D. Elastomer (profile is round)
B7M
316
316
316
SW
316
STM
316
R
B8M
A
B
Rosemount 3051S/3051/2051
C
D
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1.6 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.
1.7 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 3.)
Keep the vent path free of any obstruction, including but not limited to paint,
dust, and lubrication by mounting the transmitter so that the process can drain
away.
Figure 3. In-line Gage Low Side Pressure Port
A. Low side pressure port (atmospheric reference)
2.0 Consider housing rotation
To improve field access to wiring or to better view the optional LCD display:
1. Loosen the housing rotation set screw.
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.
Figure 4. Transmitter Housing Set Screw
A. Housing rotation set screw (5/64-in.)
A
A
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3.0 Set jumpers and switches
3.1 Security
After the transmitter is configured, you may want to protect the configuration
data from unwarranted changes. Each transmitter is equipped with a security
jumper that can be positioned ON to prevent the accidental or deliberate change
of configuration data. The jumper is labeled “Security”. The security jumper also
prevents changes made using the Local Operator Interface.
3.2 Simulate
The simulate jumper is used in conjunction with the analog input (AI) block. This
jumper is used to simulate the pressure measurement and is used as a lock-out
feature for the AI block. To enable the simulate feature, the jumper must be
moved to the ON position after power is applied. This feature prevents the
transmitter from being accidentally left in simulate mode.
Figure 5. Transmitter Jumper Locations
4.0 Connect wiring and power up
Use the following steps to wire the transmitter:
1. Remove the housing cover on the field terminals side.
2. Connect the power leads to the terminals indicated on the terminal block
label.
Power terminals are polarity insensitive - connect positive or negative to
either 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.
ROSEMOUNT 2051
PROFIBUS PA OUTPUT
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4. Ensure proper grounding. It is important that the instrument cable shield:
Be trimmed close and insulated from touching the transmitter housing
Be connected to the next shield if cable is routed through a junction box
Be connected to a good earth ground at the power supply end
5. Plug and seal unused conduit connections.
6. 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.
7. Replace the housing cover.
Figure 6. Terminals
A. Power terminals
B. Ground terminal
A
B
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Figure 7. Wiring
4.1 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 outside of the
electronics housing 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 8. 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.
A. 6234 ft (1900 m) max
(depending on cable characteristics)
B. Integrated power conditioner and filter
C. Terminators
D. Power supply
E. DP/PA coupler/link
F. Trunk
G. DP network
H. Signal wiring
I. Spur
J. PROFIBUS PA device
B
A
C
DE
G
F
II
J
H
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