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 FOUNDATION

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 Pacific65 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

SECTION 3

Configuration

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

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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Reference Manual

00809-0200-4101, Rev AA

July 2008

Rosemount 2051

SECTION 4

Operation and

Maintenance

SECTION 5

Troubleshooting

APPENDIX A

Reference Data

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

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

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

APPENDIX B

Approval

Information

APPENDIX C

Block Information

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

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

TOC-4

Reference Manual

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July 2008

Rosemount 2051

Section 1

Introduction

USING THIS MANUAL

SERVICE SUPPORT

The sections in this manual provide information on installing, operating, and maintaining Rosemount 2051 pressure transmitters with FOUNDATION fieldbus. 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.

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

Rosemount 2051

Reference Manual

00809-0200-4101, Rev AA

July 2008

MODELS COVERED

The following Rosemount 2051 Pressure Transmitters are covered by this manual:

Rosemount 2051C Coplanar™ Pressure Transmitter

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

1-2

Reference Manual

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July 2008

Rosemount 2051

Section 2

Installation

OVERVIEW

SAFETY MESSAGES

Warnings

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

The information in this section covers installation considerations for the Rosemount 2051 with FOUNDATION fieldbus. A Quick Installation Guide for FOUNDATION 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.

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.

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
	Measurement accuracy depends upon proper installation of the transmitter
CONSIDERATIONS	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.
MECHANICAL
	NOTE
CONSIDERATIONS	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
	Best practice is to mount the transmitter in an environment that has minimal
CONSIDERATIONS	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.

2-2

Reference Manual

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July 2008

Rosemount 2051

INSTALLATION

PROCEDURES

Dimensional Drawings

2051C Coplanar Flange Dimensional Drawing

	5.46 (138,7)
3.85 (98)	4.99 (127)

7.03 (179)

6.40 (163)

2051C Coplanar with Rosemount 305 Coplanar Integral Manifold

3.85 (98)

6.19

(157)

7.44

(189)

Drain/ Vent

Valve

5.50 (140) MAX OPEN

5.46 (138,7)

4.99 (127)

10.60 (270) MAX OPEN

2-3

Rosemount 2051

Reference Manual

00809-0200-4101, Rev AA

July 2008

PANEL MOUNTING

PIPE MOUNTING

Coplanar Flange Mounting Configurations with Optional Bracket (B4) for 2-in. Pipe or Panel Mounting

4.99 (127)
2.45 (62)		5/16	11/2	Bolts
	2.8 (71)	for Panel Mounting
		(Not Supplied)
7.03
(179)
	3/8–16 × 11/4 Bolts
	for Mounting
	to Transmitter

6.15
(156)	2.81
	(71)	3.4 (85)
	4.73
	(120)

2-inch U-Bolt

for Pipe Mounting

3/8–16 × 11/4 Bolts for Mounting to Transmitter

6.22	3.4 (85)
(158)	3.51
	(89)

Dimensions are in inches (millimeters)

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00809-0200-4101, Rev AA				Rosemount 2051
July 2008
	2051C Coplanar with Traditional Flange
				5.46 (139)
	3.85 (98)			4.99 (127)
		7.76
		(197)
1/2 - 14 NPT
Flange
Adapter		Drain/
(optional)
		Vent Valve
					1.626
					(41,3)
1.10 (28)	3.40 (86)			2.126
				(54)
2051C Coplanar with Rosemount 305 Traditional Integral Manifold
				5.46 (139)
	3.85 (98)		4.99 (127)
6.19
(157)
		1/2 - 14 NPT
		Flange
Drain/		Adapter
		(optional)
Vent Valve
					1.626
					(41,3)
3.75 (95)
MAX OPEN
				2.126
1.05	3.50	1.10	6.20 (158)	(54)	2.70 (69)
(27)	(89)	(28)
			MAX		MAX
			OPEN	8.90 (226)	OPEN
				MAX OPEN
					2-5

Rosemount 2051

Reference Manual

00809-0200-4101, Rev AA

July 2008

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)
	9.18 (233)
2.62
(67)
		6.19
		(157)
		1.94
		(49)	11.51
			(292)
		5.32	3.56
			(90) 4.85
		(135)
			(123)
		3.50	1.10
		(89)	(28)
	6.19 (157)
Pipe Mount (Bracket Option B1 / B7 / BA)
6.76 (172)	3.56 (90)
	MAX OPEN
	1.10 (28)
	3.50 (89)
	2.62 (67)
	0.93
	(24)
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July 2008

Rosemount 2051

2051T Dimensional Drawings

5.46 (139)

4.99 (127)

3.85 (98)

7.15 (182)

2051T with Rosemount 306 Integral Manifold

5.46 (139)

3.85 (98)

4.99 (127)

7.15

(182)

4.85	4.10
(123)	(105)

6.25 (159)

MAX OPEN

2-7

Rosemount 2051

Reference Manual

00809-0200-4101, Rev AA

July 2008

2051T Typical Mounting Configurations with Optional Mounting Bracket

Pipe Mounting

Panel Mounting

3.85

(98)

5.16 (131)

1.99 (51)

2.81 (71)

6.21

(158)

3.49

(89)

4.72 (120)

6.90

(175)

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Reference Manual

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
3.85			3.85
			(98)
(98)
		E
		D
		2-in., 4-in., or
A		6-in.	A
		Extension
H			H
		(50.8, 101.6,
		152.4)
Optional Flushing Connection Ring
(Lower Housing)			5.46 (138,7)
			4.99 (127)
G
			6.60
F			(68)
E			7.02
			(178)
			8.12
			(206)
Flushing Connection
Diaphragm Assembly and
Mounting Flange
B	C
			2-9

Rosemount 2051

Reference Manual

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July 2008

Table 2-1. 2051L Dimensional Specifications

Except where indicated, dimensions are in inches (millimeters).

	Pipe	Flange	Bolt Circle	Outside	No. of	Bolt Hole	Extension	O.D. Gasket
Class	Size	Thickness A	Diameter B	Diameter C	Bolts	Diameter	Diameter(1) D	Surface E
ASME B16.5 (ANSI) 150	2 (51)	0.69 (18)	4.75 (121)	6.0 (152)	4	0.75 (19)	NA	3.6 (92)
	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)
ASME B16.5 (ANSI) 300	2 (51)	0.82 (21)	5.0 (127)	6.5 (165)	8	0.75 (19)	NA	3.6 (92)
	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)
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)
	DN 100	24 mm	190 mm	235 mm	8	22 mm	89 mm	6.2 (158)

Mount the Transmitter

	Pipe	Process	Lower Housing G
Class(1)	Size	Side F	1/4 NPT	1/2 NPT	H
ASME B16.5 (ANSI) 150	2 (51)	2.12 (54)	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)
ASME B16.5 (ANSI) 300	2 (51)	2.12 (54)	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)
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)
	DN 100	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)

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.

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.

2-10

Reference Manual

00809-0200-4101, Rev AA

July 2008

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.

Table 2-2. Mounting Brackets

2051 Brackets

Process Connections

Mounting

Materials

Flat

Option

Pipe

Panel

Panel

CS

SST

CS

SST

Code

Coplanar In-Line Traditional Mount Mount Mount Bracket Bracket

Bolts

Bolts

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

Figure 2-1. Mounting Bracket Option Code B4

		5/16 3 11/2 Bolts
	2.8 (71)	for Panel Mounting
		(Not Supplied)

3/8–16 × 11/4 Bolts for Mounting to Transmitter

3.4 (85)

2-11

Rosemount 2051

Reference Manual

00809-0200-4101, Rev AA

July 2008

Figure 2-2. Mounting Bracket Option Codes B1, B7, and BA

3.75 (95)	1.65 (42)	3.87 (98)

2.62 (67)

4.97

(127) 2.81 (71)

Figure 2-4. Panel Mounting Bracket Option Codes B2 and B8

		1.65 (42)		Mounting Holes
	3.75 (95)		3.87 (98)	0.375 Diameter
				(10)
				1.40
				(36)
				1.40
		2.81		(36)
		(71)
			4.5 (114)	1.40 (36)

Figure 2-5. Flat Mounting Bracket Option Codes B3 and BC

2.125 (54)

1.62 (41)

8 (203)

2.81 (71)

NOTE

Dimensions are in inches (millimeters).

2-12

Reference Manual

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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:

B7M

316

B8M

F593_*

Carbon Steel (CS) Head Markings

Stainless Steel (SST) Head Markings

* The last digit in the F593_ head marking may be any letter between A and M.

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:

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:

Table 2-3. Bolt Installation

Torque Values	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	150 in.-lb (17	N-m)	300 in.-lb (34 N-m)
	B8M—Option L8

See “Safety Messages” on page 2-1 for complete warning information.

2-13

Rosemount 2051

Reference Manual

00809-0200-4101, Rev AA

July 2008

Figure 2-6. Traditional Flange Bolt Configurations

DIFFERENTIAL TRANSMITTER

GAGE TRANSMITTER

Drain/Vent

Plug

Drain/Vent

Drain/Vent

	1.75 (44) × 4	1.75 (44) × 4	1.50 (38) × 2
	1.50 (38) × 4
NOTE

Dimensions are in inches (millimeters).

Figure 2-7. Mounting Bolts and Bolt Configurations for Coplanar Flange

TRANSMITTER WITH

TRANSMITTER WITH

FLANGE BOLTS

FLANGE ADAPTERS AND

FLANGE/ADAPTER BOLTS

	2.88 (73) × 4
1.75 (44) × 4
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).

2-14

Reference Manual

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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

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

LIQUID SERVICE GAS SERVICE STEAM SERVICE

w lo F

w lo F

Flow

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July 2008

Rosemount 2051

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 are 1/4–18 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 ±1/8 in. (3.2 mm) by rotating one or both of the flange 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.

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.

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Rosemount 2051

Reference Manual

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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.

Figure 2-9. O-Rings.

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

Flange

Adapter

O-ring

PTFE Based

Elastomer

ROSEMOUNT 1151

Flange Adapter

O-ring

PTFE

Elastomer

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.

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July 2008

Rosemount 2051

Inline Process Connection

Housing Rotation

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.

Sensor Module

Process Connection

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:

1. Loosen the housing rotation set screw using a 5 -in. hex wrench.

------

64

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.

Figure 2-10. Housing Rotation

Housing Rotation Set

Screw (5/64-in.)

2-19

Rosemount 2051

Reference Manual

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July 2008

LCD Display

Figure 2-11. 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.

.

Jumpers (Top and Bottom)

LCD Display

Extended

Cover

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).
	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.
	COMMISSIONING TAG
	Device ID:
	0011512051010001440-121698091725
	PD Tag:

Tear Here

Device ID:

0011512051010001440-121698091725

PD Tag:

2-20