Emerson Rosemount 2051G User manual

Quick Start Guide
00825-0700-4101, Rev AD
May 2019
Rosemount™ 2051G Pressure
Transmitter
with 4-20 mA HART® Protocol (Revision 5
and 7)

Contents
About this guide...........................................................................................................................3
System readiness......................................................................................................................... 5
Mount the transmitter..................................................................................................................6
Set the switches........................................................................................................................... 9
Connect the wiring and power up...............................................................................................10
Verify transmitter configuration.................................................................................................13
Trim the transmitter...................................................................................................................19
Safety instrumented systems..................................................................................................... 22
Product certifications................................................................................................................. 23
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1 About this guide
This guide provides basic guidelines for Rosemount™ 2051G Transmitters. It
does not provide instructions for configuration, diagnostics, maintenance,
service, troubleshooting, Explosion-proof, Flameproof, or intrinsically safe
(I.S.) installations. See the Rosemount 2051G Reference Manual for more
information.
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.
Before connecting a HART-based communicator in an explosive
atmosphere, make sure 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 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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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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2 System readiness
2.1 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. This
transmitter can be configured for either HART Revision 5 or 7.
•For instructions on how to change the HART revision of the transmitter,
see Switch HART revision mode.
2.2 Confirm correct device driver
Procedure
1. Verify the latest Device Driver (DD/DTM™) is loaded on your systems
to ensure proper communications.
2. Reference Emerson.com or FieldCommGroup.org for the latest DD.
3. Select desired product and download the DD.
a) Reference Table 2-1 for the correct DD.
Table 2-1: Device Revisions and Files
Identify device Find device driver
files
Review
instructio
ns
Review
functionali
ty
Softwar
e release
date
NAMUR
hardwar
e
revision(
1)
NAMUR
software
revision(
1)
HART
software
revision(
2)
HART
universa
l revision
Device
revision(
3)
00809-04
00-4101
Changes to
software(4)
June
2016
1.1.xx 1.0.xx 03 7 10 Reference
Manual
(4)
5 9
(1) NAMUR revision is located on the hardware tag of the device. Differences in level 3 changes,
signified above by xx, represent minor product changes as defined per NE53. Compatibility
and functionality are preserved and product can be used interchangeably.
(2) HART software revision can be read using a HART capable configuration tool. Value shown
is minimum revision that could correspond to NAMUR revisions.
(3) Device driver file names use device and DD revision (e.g. 10_01). HART Protocol is designed
to enable legacy device driver revisions to continue to communicate with new HART devices.
To access new functionality, the new device driver must be downloaded. It is recommended
to download new device driver files to ensure full functionality.
(4) HART Revision 5 and 7 selectable, Local Operator Interface (LOI), scaled variable,
configurable alarms, expanded engineering units. Updated electronics hardware design.
Intrinsically Safe temperature classification change.
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3 Mount the transmitter
Mount directly to the impulse line without using an additional mounting
bracket or mount directly to a wall, panel, or two-inch pipe using an optional
mounting bracket.
Figure 3-1: Transmitter Direct Mounting
A. Process connection
Note
Do not apply torque directly to the electronics housing. To avoid damage,
apply torque only to the hex-shaped process connection.
Figure 3-2: Panel and Pipe Mounting
Panel mount Pipe mount
3.1 Liquid flow 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.
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3.2 Gas flow applications
Procedure
1. Place taps in the top or side of the line.
2. Mount level or above the taps.
3.3 Steam flow applications
Procedure
1. Place taps to the side of the line.
2. Mount beside or below the taps.
3. Fill impulse lines with water.
3.4 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.
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For M20 threads, install conduit plugs to full thread engagement or until
mechanical resistance is met.
3.5 Gage transmitter orientation
The low side pressure port (atmospheric reference) on the inline 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 3-3).
CAUTION
Keep the vent path free of any obstruction, including but not limited to
paint, dust, and lubrication by mounting the transmitter so the
contaminants can drain away.
Figure 3-3: Gage Low Side Pressure Port
ALow side pressure port (atmospheric reference)
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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.
Figure 4-1: Transmitter Electronics Board
Without LCD display With LOI/LCD display
A. Alarm
B. Security
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5 Connect the wiring and power up
CAUTION
Do not tamper with or remove the electronics board in the Rosemount™
2051G. This will cause permanent damage to the transmitter.
Shielded twisted pair cable should be used for best results. Use 24 AWG or
larger wire that does not exceed 5000 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.
Figure 5-1: Wiring the Transmitter (4–20 mA HART)
AVdc supply
BRL ≥ 250 (necessary for HART® communication only)
CAUTION
Installation of the transient protection terminal block does not provide
transient protection unless the transmitter 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.
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