Emerson Process Management 2051 User Manual
Reference Manual
00809-0200-4101, Rev AA
July 2008
Rosemount 2051 Pressure Transmitter
with FOUNDATION™ Fieldbus Protocol
www.rosemount.com
Reference Manual
00809-0200-4101, Rev AA
July 2008
Rosemount 2051
Rosemount 2051 Pressure
Transmitter with F
OUNDATION
Fieldbus
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 8211
Europe/ 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 Process Management representative.
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
Process Management Sales Representative.
.
.
.
.
.
www.rosemount.com
Reference Manual
00809-0200-4101, Rev AA
July 2008
Rosemount 2051
Table of Contents
SECTION 1
Introduction
SECTION 2
Installation
Using This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Service Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Models Covered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Mechanical Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Environmental Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Dimensional Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Mount the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Impulse Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Process Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Housing Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
LCD Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Conduit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Transient Protection Terminal Block . . . . . . . . . . . . . . . . . . . . . . 2-23
Jumpers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
Hazardous Locations Certifications . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
Rosemount 305, 306 and 304 Manifolds . . . . . . . . . . . . . . . . . . . . . 2-27
Rosemount 305 Integral Manifold Installation Procedure . . . . . . 2-28
Rosemount 306 Integral Manifold Installation Procedure . . . . . . 2-28
Rosemount 304 Conventional Manifold Installation Procedure. . 2-28
Integral Manifold Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
Liquid Level Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
Open Vessels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
Closed Vessels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
SECTION 3
Configuration
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Device Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Link Active Scheduler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
General Block Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Resource Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
FEATURES and FEATURES_SEL . . . . . . . . . . . . . . . . . . . . . . . . 3-3
MAX_NOTIFY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Analog Input (AI) Function Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
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July 2008
Rosemount 2051
Configure the AI block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Configuration Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Pressure transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Pressure transmitter used to measure level in an open tank . . . . 3-6
Differential pressure transmitter to measure flow . . . . . . . . . . . . . 3-8
Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Low Cutoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Process Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Alarm Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Status Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Advanced Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
LCD Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
SECTION 4
Operation and
Maintenance
SECTION 5
Troubleshooting
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Master Reset Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Sensor Calibration, Upper and Lower Trim Methods . . . . . . . . . . 4-3
Sensor Calibration, Zero Trim Method . . . . . . . . . . . . . . . . . . . . . 4-4
Factory Calibration Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Troubleshooting Guides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Resource Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Sensor Transducer Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Analog Input (AI) Function Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
LCD Transducer block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Disassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Remove from Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Remove Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Remove the Electronics Board . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Remove the Sensor Module from the Electronics Housing . . . . . 5-10
Reassembly Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Attach the Electronics Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Install the Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Reassemble the 2051C Process Flange . . . . . . . . . . . . . . . . . . . 5-11
Install the Drain/Vent Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
APPENDIX A
Reference Data
Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Conformance To Specification (±3s (Sigma)) . . . . . . . . . . . . . . . . A-1
Reference Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Long Term Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Dynamic Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Line Pressure Effect per 1000 psi (6,9 MPa). . . . . . . . . . . . . . . . . A-2
Ambient Temperature Effect per 50°F (28°C) . . . . . . . . . . . . . . . . A-3
Mounting Position Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
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Rosemount 2051
Vibration Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Power Supply Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Electromagnetic Compatibility (EMC) . . . . . . . . . . . . . . . . . . . . . . A-3
Transient Protection (Option Code T1) . . . . . . . . . . . . . . . . . . . . . A-3
Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Range and Sensor Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Overpressure Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6
Static Pressure Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7
Burst Pressure Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7
Temperature Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7
Humidity Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
Volumetric Displacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
Failure Mode Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Process Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
2051C Process Wetted Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
2051T Process Wetted Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
2051L Process Wetted Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
Non-Wetted Parts for 2051C/T/L . . . . . . . . . . . . . . . . . . . . . . . . . A-10
Shipping Weights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-11
Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-22
Spare Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-25
APPENDIX B
Approval
Information
APPENDIX C
Block Information
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Approved Manufacturing Locations . . . . . . . . . . . . . . . . . . . . . . . . B-1
European Directive Information . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Fieldbus Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Hazardous Locations Certifications . . . . . . . . . . . . . . . . . . . . . . . . B-2
Approval Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8
Factory Mutual (FM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8
Canadian Standards Association (CSA) . . . . . . . . . . . . . . . . . . . B-21
Transducer Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Parameters and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
Block/Transducer Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6
Resource Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6
Parameters and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7
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July 2008
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July 2008
Rosemount 2051
Section 1 Introduction
USING THIS MANUAL The sections in this manual provide information on installing, operating, and
maintaining Rosemount 2051 pressure transmitters with F
The sections are organized as follows:
• Section 2: Installation contains mechanical and electrical installation
instructions.
• Section 3: Configuration provides instruction on basic operation,
software functionality, and basic configuration procedures.
• Section 4: Operation and Maintenance contains operation and
maintenance techniques.
• Section 5: Troubleshooting contains information on the
troubleshooting suggestions for the most common operating problems.
Also included are disassembly and reassembly procedures.
• Section A: Reference Data supplies reference and specification data,
as well as ordering information.
• Section B: Approval Information contains intrinsic safety approval
information, European ATEX directive information, and
approval drawings.
• Section C: Block Information contains information on the Transducer
and Resource blocks.
OUNDATION fieldbus.
SERVICE SUPPORT To expedite the return process outside of the United States, contact the
nearest Emerson Process Management representative.
Within the United States, call the Emerson Process Management Instrument
and Valves Response Center using the 1-800-654-RSMT (7768) toll-free
number. This center, available 24 hours a day, will assist you with any needed
information or materials.
The center will ask for product model and serial numbers, and will provide a
Return Material Authorization (RMA) number. The center will also ask for the
process material to which the product was last exposed.
Individuals who handle products exposed to a hazardous substance can avoid injury if they
are informed of and understand the hazard. If the product being returned was exposed to a
hazardous substance as defined by OSHA, a copy of the required Material Safety Data Sheet
(MSDS) for each hazardous substance identified must be included with the returned goods.
Emerson Process Management Instrument and Valves Response Center
representatives will explain the additional information and procedures
necessary to return goods exposed to hazardous substances.
www.rosemount.com
Reference Manual
00809-0200-4101, Rev AA
Rosemount 2051
July 2008
MODELS COVERED The following Rosemount 2051 Pressure Transmitters are covered by this
manual:
Rosemount 2051C Coplanar
2051CD - Differential Pressure Transmitter
Measures differential pressure up to 2000 psi (137,9 bar)
2051CG - Gage Pressure Transmitter
Measures gage pressure up to 2000 psi (137,9 bar)
Rosemount 2051T In-Line Pressure Transmitter
2051TG - Gage Pressure Transmitter
Measures gage pressure up to 10000 psi (689,5 bar)
2051TA - Absolute Pressure Transmitter
Measures absolute pressure up to 10000 psi (689,5 bar)
Rosemount 2051L Liquid Level Pressure Transmitter
2051L - Flange-Mounted Liquid Level Transmitter
Provides precise level and specific gravity measurements up to 300 psi
(20,7 bar) for a wide variety of tank configurations
™
Pressure Transmitter
1-2
Reference Manual
00809-0200-4101, Rev AA
July 2008
Rosemount 2051
Section 2 Installation
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1
General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-2
Mechanical Considerations . . . . . . . . . . . . . . . . . . . . . . . . page 2-2
Environmental Considerations . . . . . . . . . . . . . . . . . . . . . page 2-2
Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-3
Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . page 2-3
Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-21
Hazardous Locations Certifications . . . . . . . . . . . . . . . . . page 2-27
Rosemount 305, 306 and 304 Manifolds . . . . . . . . . . . . . . page 2-27
Liquid Level Measurement . . . . . . . . . . . . . . . . . . . . . . . . . page 2-31
OVERVIEW The information in this section covers installation considerations for the
Rosemount 2051 with F
F
OUNDATION fieldbus (document number 00825-0200-4101) is shipped with
every transmitter to describe basic pipe-fitting and wiring procedures for initial
installation. Dimensional drawings for each 2051 variation and mounting
configuration are also included.
OUNDATION fieldbus. A Quick Installation Guide for
SAFETY MESSAGES Procedures and instructions in this section may require special precautions to
ensure the safety of the personnel performing the operation. Information that
raises potential safety issues is indicated with a warning symbol ( ). Refer
to the following safety messages before performing an operation preceded by
this symbol.
Warnings
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 2051 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.
www.rosemount.com
Rosemount 2051
Reference Manual
00809-0200-4101, Rev AA
July 2008
Electrical shock can result in death or serious injury.
• Avoid contact with the leads and terminals.
Process leaks could result in death or serious injury.
• Install and tighten all four flange bolts before applying pressure.
• Do not attempt to loosen or remove flange bolts while the transmitter is
in service.
Replacement equipment or spare parts not approved by Emerson Process
Management 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 Process Management as spare
parts.
• Refer to page A-25 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.
GENERAL CONSIDERATIONS
MECHANICAL CONSIDERATIONS
Measurement accuracy depends upon proper installation of the transmitter
and impulse piping. Mount the transmitter close to the process and use a
minimum of piping to achieve best accuracy. Also, consider the need for easy
access, personnel safety, practical field calibration, and a suitable transmitter
environment. Install the transmitter to minimize vibration, shock, and
temperature fluctuation.
IMPORTANT
Install the enclosed pipe plug (found in the box) in unused conduit opening
with a minimum of five threads engaged to comply with explosion-proof
requirements.
For material compatibility considerations, see document number
00816-0100-3045 on www.emersonprocess.com/rosemount.
NOTE
For steam service or for applications with process temperatures greater than
the limits of the transmitter, do not blow down impulse piping through the
transmitter. Flush lines with the blocking valves closed and refill lines with
water before resuming measurement.
NOTE
When the transmitter is mounted on its side, position the Coplanar flange to
ensure proper venting or draining. Mount the flange as shown in Figure 2-8 on
page 2-16, keeping drain/vent connections on the bottom for gas service and
on the top for liquid service.
ENVIRONMENTAL CONSIDERATIONS
2-2
Best practice is to mount the transmitter in an environment that has minimal
ambient temperature change. The transmitter electronics temperature
operating limits are –40 to 185 °F (–40 to 85 °C). Refer to Appendix A:
Reference Data that lists the sensing element operating limits. Mount the
transmitter so that it is not susceptible to vibration and mechanical shock and
does not have external contact with corrosive materials.
Reference Manual
3.85 (98)
7.03 (179)
4.99 (127)
5.46 (138,7)
6.40 (163)
3.85 (98)
7.44
(189)
Drain/ Vent
Valve
5.50 (140)
MAX OPEN
6.19
(157)
10.60 (270)
MAX OPEN
4.99 (127)
5.46 (138,7)
00809-0200-4101, Rev AA
July 2008
INSTALLATION PROCEDURES
Dimensional Drawings
Rosemount 2051
2051C Coplanar Flange Dimensional Drawing
2051C Coplanar with Rosemount 305 Coplanar Integral Manifold
2-3
Rosemount 2051
4.99 (127)
7.03
(179)
2.81
(71)
4.73
(120)
6.15
(156)
2.45 (62)
5
/16 ⫻ 11/2 Bolts
for Panel Mounting
(Not Supplied)
3
/8–16 × 11/4 Bolts
for Mounting
to Transmitter
2.8 (71)
3.4 (85)
6.22
(158)
3.51
(89)
2-inch U-Bolt
for Pipe Mounting
3.4 (85)
3
/8–16 × 11/4 Bolts
for Mounting
to Transmitter
Coplanar Flange Mounting Configurations with
Optional Bracket (B4) for 2-in. Pipe or Panel Mounting
PANEL MOUNTINGPIPE MOUNTING
Reference Manual
00809-0200-4101, Rev AA
July 2008
Dimensions are in inches (millimeters)
2-4
Reference Manual
3.85 (98)
7.76
(197)
3.40 (86)
1.10 (28)
1
/2 - 14 NPT
Flange
Adapter
(optional)
Drain/
Vent Val ve
5.46 (139)
4.99 (127)
1.626
(41,3)
2.126
(54)
3.85 (98)
1
/2 - 14 NPT
Flange
Adapter
(optional)
Drain/
Vent Val ve
3.50
(89)
1.05
(27)
1.10
(28)
3.75 (95)
MAX OPEN
6.19
(157)
2.126
(54)
6.20 (158)
MAX
OPEN
8.90 (226)
MAX OPEN
2.70 (69)
MAX
OPEN
1.626
(41,3)
5.46 (139)
4.99 (127)
00809-0200-4101, Rev AA
July 2008
Rosemount 2051
2051C Coplanar with Traditional Flange
2051C Coplanar with Rosemount 305 Traditional Integral Manifold
2-5
Rosemount 2051
9.18 (233)
2.62
(67)
6.19 (157)
5.32
(135)
1.94
(49)
3.50
(89)
1.10
(28)
3.56
(90)
4.85
(123)
6.19
(157)
11.51
(292)
6.76 (172)
3.56 (90)
MAX OPEN
1.10 (28)
3.50 (89)
2.62 (67)
0.93
(24)
Traditional Flange Mounting Configurations with
Optional Brackets for 2-in. Pipe or Panel Mounting
Panel Mount (Bracket Option B2 / B8) Pipe Mount (Bracket Option B3 / B9 / BC)
Reference Manual
00809-0200-4101, Rev AA
July 2008
Pipe Mount (Bracket Option B1 / B7 / BA)
2-6
Reference Manual
5.46 (139)
4.99 (127)
3.85 (98)
7.15 (182)
3.85 (98)
7.15
(182)
4.85
(123)
6.25
(159)
MAX OPEN
4.99 (127)
4.10
(105)
5.46 (139)
00809-0200-4101, Rev AA
July 2008
Rosemount 2051
2051T Dimensional Drawings
2051T with Rosemount 306 Integral Manifold
2-7
Rosemount 2051
6.21
(158)
3.49
(89)
3.85
(98)
1.99 (51)
4.72
(120)
6.90
(175)
2.81 (71)
5.16 (131)
2051T Typical Mounting Configurations with Optional Mounting Bracket
Pipe Mounting Panel Mounting
Reference Manual
00809-0200-4101, Rev AA
July 2008
2-8
Reference Manual
3.85
(98)
A
H
3.85
(98)
D
A
H
2-in., 4-in., or
6-in.
Extension
(50.8, 101.6,
152.4)
E
5.46 (138,7)
4.99 (127)
6.60
(68)
7.02
(178)
8.12
(206)
Flushing Connection
E
F
G
C
B
00809-0200-4101, Rev AA
July 2008
Rosemount 2051
2051L Liquid Level
2-in. Flange Configuration (Flush Mount Only) 3- and 4-in. Flange Configuration
Optional Flushing Connection Ring
(Lower Housing)
Diaphragm Assembly and
Mounting Flange
2-9
Reference Manual
00809-0200-4101, Rev AA
(1)
D
July 2008
O.D. Gasket
Surface E
Rosemount 2051
Table 2-1. 2051L Dimensional Specifications
Except where indicated, dimensions are in inches (millimeters).
Class
ASME B16.5 (ANSI) 150 2 (51) 0.69 (18) 4.75 (121) 6.0 (152) 4 0.75 (19) NA 3.6 (92)
ASME B16.5 (ANSI) 300 2 (51) 0.82 (21) 5.0 (127) 6.5 (165) 8 0.75 (19) NA 3.6 (92)
DIN 2501 PN 10–40 DN 50 20 mm 125 mm 165 mm 4 18 mm NA 4.0 (102)
DIN 2501 PN 25/40 DN 80 24 mm 160 mm 200 mm 8 18 mm 65 mm 5.4 (138)
Pipe
Size
3 (76) 0.88 (22) 6.0 (152) 7.5 (191) 4 0.75 (19) 2.58 (66) 5.0 (127)
4 (102) 0.88 (22) 7.5 (191) 9.0 (229) 8 0.75 (19) 3.5 (89) 6.2 (158)
3 (76) 1.06 (27) 6.62 (168) 8.25 (210) 8 0.88 (22) 2.58 (66) 5.0 (127)
4 (102) 1.19 (30) 7.88 (200) 10.0 (254) 8 0.88 (22) 3.5 (89) 6.2 (158)
DN 100 24 mm 190 mm 235 mm 8 22 mm 89 mm 6.2 (158)
Flange
Thickness A
Bolt Circle
Diameter B
Outside
Diameter C
No. of
Bolts
Bolt Hole
Diameter
Extension
Diameter
(1)
Class
ASME B16.5 (ANSI) 150 2 (51) 2.12 (54) 0.97 (25) 1.31 (33) 5.65 (143)
ASME B16.5 (ANSI) 300 2 (51) 2.12 (54) 0.97 (25) 1.31 (33) 5.65 (143)
DIN 2501 PN 10–40 DN 50 2.4 (61) 0.97 (25) 1.31 (33) 5.65 (143)
DIN 2501 PN 25/40 DN 80 3.6 (91) 0.97 (25) 1.31 (33) 5.65 (143)
(1) Tolerances are -0.020 and +0.040 (-0,51 and +1,02)
Pipe
Size
3 (76) 3.6 (91) 0.97 (25) 1.31 (33) 5.65 (143)
4 (102) 3.6 (91) 0.97 (25) 1.31 (33) 5.65 (143)
3 (76) 3.6 (91) 0.97 (25) 1.31 (33) 5.65 (143)
4 (102) 3.6 (91) 0.97 (25) 1.31 (33) 5.65 (143)
DN 100 3.6 (91) 0.97 (25) 1.31 (33) 5.65 (143)
Mount the Transmitter Process Flange Orientation
Mount the process flanges with sufficient clearance for process connections.
For safety reasons, place the drain/vent valves so the process fluid is directed
away from possible human contact when the vents are used. In addition,
consider the accessibility for a testing or calibration input.
NOTE
Most transmitters are calibrated in the horizontal position. Mounting the
transmitter in any other position will shift the zero point to the equivalent
amount of liquid head pressure caused by the varied mounting position. To
reset zero point, refer to “Sensor Trim” on page 4-5.
Process
Side F
Lower Housing G
H1/4 NPT 1/2 NPT
2-10
Terminal Side of Electronics Housing
Mount the transmitter so the terminal side is accessible. Clearance of 0.75-in.
(19 mm) is required for cover removal. Use a conduit plug on the unused side
of the conduit opening.
Circuit Side of Electronics Housing
Provide 0.75 in. (19 mm) of clearance for units without an LCD display.
Provide 3 in. (76 mm) of clearance for units installed with LCD.
Cover Installation
Always ensure a proper seal by installing the electronics housing covers so
that metal contacts metal. Use Rosemount o-rings.
Reference Manual
5
/16 3 11/2 Bolts
for Panel Mounting
(Not Supplied)
3
/8–16 × 11/4 Bolts
for Mounting
to Transmitter
2.8 (71)
3.4 (85)
00809-0200-4101, Rev AA
July 2008
Table 2-2. Mounting Brackets
Rosemount 2051
Mounting Brackets
Rosemount 2051 Transmitters may be panel-mounted or pipe-mounted
through an optional mounting bracket. Refer to Table 2-2 for the complete
offering and see Figure 2-1 through Figure 2-5 on pages 2-11 and 2-12 for
dimensions and mounting configurations.
2051 Brackets
Process Connections Mounting Materials
Flat
Option
Coplanar In-Line Traditional
Code
B4 X X X X X X X
B1 X X X X
B2 X X X X
B3 X X X X
B7 X X X X
B8 X X X X
B9 X X X X
BA X X X X
BC X X X X
Pipe
Mount
Panel
Mount
Panel
Mount
CS
Bracket
SST
Bracket
CS
Bolts
SST
Bolts
Figure 2-1. Mounting Bracket Option Code B4
2-11
Rosemount 2051
3.87 (98)
3.75 (95)
1.65 (42)
2.62 (67)
4.97
(127)
2.81
(71)
1.65 (42)
3.87 (98)
4.5 (114)
1.40 (36)
Mounting Holes
0.375 Diameter
(10)
3.75 (95)
2.81
(71)
2.125 (54)
2.81 (71)
8 (203)
NOTE
Dimensions are in inches (millimeters).
1.62 (41)
Figure 2-2. Mounting Bracket Option Codes B1, B7, and BA
1.40
(36)
1.40
(36)
Figure 2-4. Panel Mounting Bracket Option Codes B2 and B8
Figure 2-5. Flat Mounting Bracket Option Codes B3 and BC
Reference Manual
00809-0200-4101, Rev AA
July 2008
2-12
Reference Manual
Carbon Steel (CS) Head Markings
B7M
B8M
F593_*
Stainless Steel (SST) Head Markings
* The last digit in the F593_ head marking
may be any letter between A and M.
316
See “Safety Messages” on page 2-1 for complete warning information.
00809-0200-4101, Rev AA
July 2008
Rosemount 2051
Flange Bolts
The 2051 is shipped with a Coplanar flange installed with four 1.75-in. (44
mm) flange bolts. See Figure 2-6 and Figure 2-7 on pages 2-14 and 2-14.
Stainless steel bolts are coated with a lubricant to ease installation. Carbon
steel bolts do not require lubrication. No additional lubricant should be applied
when installing either type of bolt. Bolts are identified by their head markings:
Bolt Installation
Only use bolts supplied with the 2051 or provided by Emerson Process
Management as spare parts. When installing the transmitter to one of the
optional mounting brackets, torque the bolts to 125 in-lb. (0,9 N-m). Use
the following bolt installation procedure:
Table 2-3. Bolt Installation
Torque Values
1. Finger-tighten the bolts.
2. Torque the bolts to the initial torque value using a crossing pattern.
3. Torque the bolts to the final torque value using the same
crossing pattern.
Torque values for the flange and manifold adapter bolts are as follows:
Bolt Material Initial Torque Value Final Torque Value
CS-ASTM-A449 Standard 300 in.-lb (34 N-m) 650 in.-lb (73 N-m)
316 SST—Option L4 150 in.-lb (17 N-m) 300 in.-lb (34 N-m)
ASTM-A-193-B7M—Option L5 300 in.-lb (34 N-m) 650 in.-lb (73 N-m)
ASTM-A-193 Class 2, Grade
B8M—Option L8
150 in.-lb (17 N-m) 300 in.-lb (34 N-m)
2-13
Rosemount 2051
GAGE TRANSMITTERDIFFERENTIAL TRANSMITTER
Drain/Vent
Drain/Vent
Plug
1.75 (44) × 4
1.50 (38) × 4
1.75 (44) × 4
1.50 (38) × 2
NOTE
Dimensions are in inches (millimeters).
Drain/Vent
TRANSMITTER WITH
FLANGE BOLTS
TRANSMITTER WITH
FLANGE ADAPTERS AND
FLANGE/ADAPTER BOLTS
Description Size in. (mm)
Flange Bolts 1.75 (44)
Flange/Adapter Bolts 2.88 (73)
Manifold/Flange Bolts 2.25 (57)
Note: Rosemount 2051T transmitters are direct mount and do not require bolts for process connection.
NOTE
Dimensions are in inches (millimeters).
1.75 (44) × 4
2.88 (73) × 4
Figure 2-6. Traditional Flange Bolt Configurations
Reference Manual
00809-0200-4101, Rev AA
July 2008
Figure 2-7. Mounting Bolts and Bolt Configurations for Coplanar Flange
2-14
Reference Manual
00809-0200-4101, Rev AA
July 2008
Rosemount 2051
Impulse Piping The piping between the process and the transmitter must accurately transfer
the pressure to obtain accurate measurements. There are six possible
sources of impulse piping error: pressure transfer, leaks, friction loss
(particularly if purging is used), trapped gas in a liquid line, liquid in a gas line,
and density variations between the legs.
The best location for the transmitter in relation to the process pipe is
dependent on the process. Use the following guidelines to determine
transmitter location and placement of impulse piping:
• Keep impulse piping as short as possible.
• For liquid service, slope the impulse piping at least 1 in./foot (8 cm/m)
upward from the transmitter toward the process connection.
• For gas service, slope the impulse piping at least 1 in./foot (8 cm/m)
downward from the transmitter toward the process connection.
• Avoid high points in liquid lines and low points in gas lines.
• Make sure both impulse legs are the same temperature.
• Use impulse piping large enough to avoid friction effects and blockage.
• Vent all gas from liquid piping legs.
• When using a sealing fluid, fill both piping legs to the same level.
• When purging, make the purge connection close to the process taps
and purge through equal lengths of the same size pipe. Avoid purging
through the transmitter.
• Keep corrosive or hot (above 250 °F [121 °C]) process material out of
direct contact with the sensor module and flanges.
• Prevent sediment deposits in the impulse piping.
• Maintain equal leg of head pressure on both legs of the impulse piping.
• Avoid conditions that might allow process fluid to freeze within the
process flange.
2-15
Rosemount 2051
LIQUID SERVICE GAS SERVICE STEAM SERVICE
F
lo
w
F
lo
w
F
lo
w
Reference Manual
00809-0200-4101, Rev AA
July 2008
Mounting Requirements
Impulse piping configurations depend on specific measurement conditions.
Refer to Figure 2-8 for examples of the following mounting configurations:
Liquid Flow Measurement
• Place taps to the side of the line to prevent sediment deposits on the
process isolators.
• Mount the transmitter beside or below the taps so gases vent into the
process line.
• Mount drain/vent valve upward to allow gases to vent.
Gas Flow Measurement
• Place taps in the top or side of the line.
• Mount the transmitter beside or above the taps so to drain liquid into
the process line.
Steam Flow Measurement
• Place taps to the side of the line.
• Mount the transmitter below the taps to ensure that impulse piping will
remain filled with condensate.
• In steam service above 250 °F (121 °C), fill impulse lines with water to
prevent steam from contacting the transmitter directly and to ensure
accurate measurement start-up.
NOTE
For steam or other elevated temperature services, it is important that
temperatures at the process connection do not exceed the transmitter’s
process temperature limits. See “Process Temperature Limits” on page A-7
for details.
Figure 2-8. Installation
Examples
2-16
Reference Manual
00809-0200-4101, Rev AA
July 2008
Process Connections Coplanar or Traditional Process Connection
Install and tighten all four flange bolts before applying pressure, or process
leakage will result. When properly installed, the flange bolts will protrude
through the top of the sensor module housing. Do not attempt to loosen or
remove the flange bolts while the transmitter is in service.
Flange Adaptors:
Rosemount 2051DP and GP process connections on the transmitter flanges
1
are
/4–18 NPT. Flange adapters are available with standard 1/2–14 NPT Class
2 connections. The flange adapters allow users to disconnect from the
process by removing the flange adapter bolts. Use plant-approved lubricant or
sealant when making the process connections. Refer to Dimensional
Drawings on page 2-3 for the distance between pressure connections. This
distance may be varied ±
adapters.
To install adapters to a Coplanar flange, perform the following procedure:
1. Remove the flange bolts.
2. Leaving the flange in place, move the adapters into position with the
o-ring installed.
3. Clamp the adapters and the Coplanar flange to the transmitter sensor
module using the larger of the bolts supplied.
4. Tighten the bolts. Refer to “Flange Bolts” on page 2-13 for torque
specifications.
1
/8 in. (3.2 mm) by rotating one or both of the flange
Rosemount 2051
Whenever you remove flanges or adapters, visually inspect the PTFE o-rings.
Replace with o-ring designed for Rosemount transmitter if there are any signs
of damage, such as nicks or cuts. Undamaged o-rings may be reused. If you
replace the o-rings, retorque the flange bolts after installation to compensate
for cold flow. Refer to the process sensor body reassembly procedure in
Section 5: Troubleshooting.
2-17
Rosemount 2051
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.
ROSEMOUNT 3051S / 3051 / 2051 / 3001 / 3095 / 2024
ROSEMOUNT 1151
Flange
Adapter
O-ring
Flange Adapter
O-ring
PTFE Based
Elastomer
PTFE
Elastomer
Figure 2-9. O-Rings.
Reference Manual
00809-0200-4101, Rev AA
July 2008
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
2-9). Use only the O-ring designed for the corresponding flange adaptor.
2-18
When compressed, PTFE O-rings tend to “cold flow,” which aids in their
sealing capabilities.
NOTE
PTFE O-rings should be replaced if the flange adapter is removed.
Reference Manual
Sensor Module
Process Connection
5
64
------
Housing Rotation Set
Screw (5/64-in.)
00809-0200-4101, Rev AA
July 2008
Rosemount 2051
Inline Process Connection
Do not apply torque directly to the sensor module. Rotation between the sensor module
and the process connection can damage the electronics. To avoid damage, apply torque
only to the hex-shaped process connection.
Housing Rotation The electronics housing can be rotated up to 180 degrees in either direction to
improve field access, or to better view the optional LCD display. To rotate the
housing, perform the following procedure:
Figure 2-10. Housing Rotation
1. Loosen the housing rotation set screw using a -in. hex wrench.
2. Turn the housing left or right up to 180° from its original position. Over
rotating will damage the transmitter.
3. Retighten the housing rotation set screw.
2-19
Reference Manual
Jumpers (Top and Bottom)
LCD Display
Extended
Cover
COMMISSIONING TAG
Device ID:
0011512051010001440-121698091725
PD Tag:
Device ID:
0011512051010001440-121698091725
PD Tag:
Tea r H ere
00809-0200-4101, Rev AA
Rosemount 2051
July 2008
LCD Display Transmitters ordered with the LCD option are shipped with the display
installed. Installing the display on an existing 2051 transmitter requires a small
instrument screwdriver.
Figure 2-11. LCD Display
.
Tagging Commissioning (Paper) Tag
When commissioning more than one device on a fieldbus segment, it can be
difficult to identify which device is at a particular location. A removable tag
provided with the transmitter can aid in this process by linking the Device ID
and a physical location. TheDevice ID is a unique code that identifies a
particular device in the absence of a device tag. The device tag is used by the
customer as an operational identification for the device and is usually defined
by the Piping and Instrumentation Diagram (P & ID).
2-20
The installer should note the physical location in both places on the
removable commissioning tag and tear off the bottom portion. This should be
done for each device on the segment. The bottom portion of the tags can be
used for commissioning the segment in the control system, providing a direct
link between the Device ID and the tag location.
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