Emerson Rosemount 2051G User manual

Reference Manual
00809-0400-4101, Rev BA
January 2018
Rosemount™2051G In-Line Pressure
Transmitter
with HART®Revision 5 and 7 Selectable Protocol

I
Reference Manual
00809-0100-4016, Rev RF
Contents
January 2018
Contents
1Section 1: Introduction
1.1 Using this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Models covered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2.1 Rosemount 2051G In-Line Gage Pressure Transmitter . . . . . . . . . . . . . . . . 1
1.2.2 Rosemount 2051G In-Line Absolute Pressure Transmitter. . . . . . . . . . . . . 1
1.3 Product recycling/disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2Section 2: Configuration
2.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 System readiness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2.1 Confirm correct device driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 HART installation flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Transmitter overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.5 Configuration overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6 Configuration basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6.1 Configuring on the bench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6.2 Configuration tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.6.3 Setting the loop to manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.7 Verify configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.7.1 Field Communicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.7.2 AMS Device Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.7.3 Local operator interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.8 Verifying process variables configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.8.1 Field Communicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.8.2 AMS Device Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.9 Basic setup of the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.1 Setting pressure units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.2 Rerange the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.9.3 Damping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.10 Configuring the LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.11Detailed transmitter setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.11.1Configuring alarm and saturation levels . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.11.2Configuring scaled variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.11.3Re-mapping device variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.12Performing transmitter tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Contents

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2.12.1Verifying alarm level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.12.2Performing an analog loop test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.12.3Simulate device variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.13Configuring burst mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.14Establishing multidrop communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.14.1Changing a transmitter address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.14.2Communicating with a multidropped transmitter. . . . . . . . . . . . . . . . . . . 25
3Section 3: Hardware Installation
3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.3 Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.3.1 Installation considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.3.2 Environmental considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.3.3 Mechanical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.4 Installation procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.4.1 Mount the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.4.2 Impulse piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.4.3 Inline process connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.5 Rosemount 306 Manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.5.1 Rosemount 306 Integral Manifold installation procedure . . . . . . . . . . . . 34
4Section 4: Electrical Installation
4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.3 Local Operating Interface (LOI)/LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.3.1 Rotating LCD/LOI display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.4 Configuring transmitter security. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.4.1 Setting security switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.4.2 HART lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.4.3 Configuration button lock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.4.4 LOI password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.5 Setting transmitter alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.6 Electrical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.6.1 Conduit installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.6.2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.6.3 Wiring the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
4.6.4 Grounding the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

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5Section 5: Operation and Maintenance
5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5.3 Recommended calibration tasks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.3.1 Field installation tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.3.2 Bench calibration tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.4 Calibration overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.4.1 Determining necessary sensor trims. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.4.2 Determining calibration frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.5 Trim the pressure signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.5.1 Sensor trim overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.5.2 Perform a sensor trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5.5.3 Recall factory trim—sensor trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.6 Trim the analog output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.6.1 Performing digital-to-analog trim (4–20mA output trim) . . . . . . . . . . . . 52
5.6.2 Performing digital-to-analog trim (4–20mA output trim) using other scale
53
5.6.3 Recalling factory trim—analog output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
5.7 Switching HART revision. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.7.1 Generic menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.7.2 Field Communicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.7.3 AMS Device Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
5.7.4 LOI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6Section 6: Troubleshooting
6.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.3 Diagnostic messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
6.4 Disassembly procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
6.4.1 Removing from service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
6.4.2 Removing terminal block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
6.4.3 Removing the LOI or LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
6.5 Reassembly procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
6.5.1 Installing LOI/LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
6.6 Service support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

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7Section 7: Safety Instrumented Systems Requirements
7.1 Safety Instrumented Systems (SIS) Certification . . . . . . . . . . . . . . . . . . . . . . . . . . 65
7.2 Rosemount 2051G safety certified identification . . . . . . . . . . . . . . . . . . . . . . . . . 65
7.3 Installation in SIS applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
7.4 Configuring in SIS applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
7.4.1 Damping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
7.4.2 Alarm and saturation levels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
7.5 Rosemount 2051G SIS operation and mainenance . . . . . . . . . . . . . . . . . . . . . . . . 67
7.5.1 Proof test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
7.5.2 Partial proof test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
7.5.3 Comprehensive proof test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
7.6 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
7.6.1 Visual inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
7.6.2 Special tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
7.6.3 Product repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
7.6.4 Rosemount 2051G SIS reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
7.6.5 Failure rate data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
7.6.6 Failure values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
7.6.7 Product life. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
AAppendix A: Reference Data
A.1 Product Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
A.2 Ordering Information, Specifications, and Drawings . . . . . . . . . . . . . . . . . . . . . . 69
BAppendix B: Field Communicator Menu Trees and Fast Keys
B.1 Menu trees. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
B.2 Fast Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
CAppendix C: Local Operator Interface
C.1 LOI menu tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
C.2 LOI menu tree - extended menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
C.3 Number entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
C.4 Text entry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

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Rosemount™2051G In-Line Pressure
Transmitter
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™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 Sales
Representative.

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Explosions could result in death or serious injury.
Installation of this transmitter in an explosive environment must be in accordance with the
appropriate local, national, and international standards, codes, and practices. Review the approvals
section of the Rosemount 2051G 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.

Reference Manual
00809-0400-4101, Rev BA
Introduction
January 2018
1
Introduction
Section 1 Introduction
1.1 Using this manual
The sections in this manual provide information on installing, operating, and maintaining the
Rosemount™2051G. The sections are organized as follows:
Section 2: Configuration provides instruction on commissioning and operating Rosemount 2051G
Transmitters. Information on software functions, configuration parameters, and online variables is also
included.
Section 3: Hardware Installation contains mechanical installation instructions, and field upgrade options.
Section 4: Electrical Installation contains electrical installation instructions, and field upgrade options.
Section 5: Operation and Maintenance provides detailed information on calibrating and changing HART®
Revisions.
Section 6: Troubleshooting provides troubleshooting techniques for the most common operating
problems.
Section 7: Safety Instrumented Systems Requirements provides identification, installation,
configuration, operation and maintenance, and inspection information for Safety Instrumented Systems.
Appendix A: Reference Data supplies reference and specification data, as well as ordering information.
Appendix B: Field Communicator Menu Trees and Fast Keys contains intrinsic safety approval
information, European ATEX directive information, and approval drawings.
Appendix D: Local Operator Interface provides detailed Local Operating Interface (LOI) menu trees.
1.2 Models covered
The following Rosemount Pressure Transmitters are covered by this manual:
1.2.1 Rosemount 2051G In-Line Gage Pressure Transmitter
Measures gage pressure up to 4000 psi (275,8 bar)
1.2.2 Rosemount 2051G In-Line Absolute Pressure Transmitter
Measures absolute pressure up to 4000 psi (275,8 bar)
1.3 Product recycling/disposal
Recycling of equipment and packaging should be taken into consideration and disposed of in accordance
with local and national legislation/regulations.

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Introduction

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Configuration
Section 2 Configuration
Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3
System readiness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4
HART installation flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6
Transmitter overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 7
Configuration overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 9
Configuration basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 9
Verify configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 11
Basic setup of the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 13
Configuring the LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 17
Detailed transmitter setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 17
Performing transmitter tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 21
Configuring burst mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 23
Establishing multidrop communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 24
2.1 Safety messages
Procedures and instructions in this section may require special precautions to ensure the safety of the
personnel performing the operations. Information that raises potential safety issues is indicated by a
warning symbol ( ). Refer to the following safety messages before performing an operation preceded
by this symbol.

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2.2 System readiness
If using HART®based control or asset management systems, confirm the HART capability of such
systems prior to commissioning and installation. Not all systems are capable of communicating with
HART Revision 7 devices.
For instructions on how to change the HART revision of your transmitter, see “Switching HART
revision” on page 54.
2.2.1 Confirm correct device driver
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.
Explosions could result in death or serious injury.
Installation of this transmitter in an explosive environment must be in accordance with the
appropriate local, national, and international standards, codes, and practices. Review the approvals
section of the Rosemount 2051G 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.
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.
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™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 as 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.

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Table 2-1. Device Revisions and Files
Identify device Find device driver files Review instructions Review
functionality
Software
release
date
NAMUR
hardware
revision(1)
NAMUR
software
revision(1)
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.
HART
software
revision(2)
2. HART software revision can be read using a HART capable configuration tool. Value shown is minimum revision that could correspond to NAMUR revisions.
HART
universal
revision
Device
revision(3)
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.
Manual document
number
Changes to
software(4)
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.
June
2016
1.1.xx 1.0.xx 03 710 00809-0400-4101 See footnote 4 for
list of changes.
5 9

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2.3 HART installation flowchart
Figure 2-1. HART Installation Flowchart
START HERE
Bench
Calibration? Field Install
No
Set Units
(page 13)
Set Range Points
(page 13)
Select Linear
Output
(page 13)
Set Damping
(page 16)
Verify
Apply Pressure
Yes
Within
Specifications? Yes
No
Refer to
Section 5: Operation
and Maintenance
Configure
Security and
Alarm
(page 36)
Mount Transmitter
(page 29)
Wire Transmitter
(page 41)
Power Transmitter
(page 40)
Trim the
Transmitter
(page 48)
Done
Review Transmitter
Configuration
(page 9)
Confirm Transmitter
Configuration
(page 11)
Configure for
Pressure
Check Process
Connection
(page 40)

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2.4 Transmitter overview
The Rosemount™2051G is offered for Gage Pressure (GP) and Absolute Pressure (AP) measurements.
The Rosemount 2051G utilizes piezoresistive sensor technology for AP and GP measurements.
The major components of the Rosemount 2051G In-Line are the sensor module and the electronics
housing.The sensor module contains the oil filled sensor system (isolating diaphragm, oil fill system and
sensor). The electronics board is located within the electronics housing. The electrical signals from the
sensor module are transmitted to the electronics board which contains the memory module and the
analog to digital signal converter (A/D converter). The signal is then converted to a 4-20mA analog
output signal or HART digital signal. The electronics housing contains the output electronics board, the
optional external configuration buttons, and the terminal block. The basic block diagram of the
transmitter is illustrated in Figure 2-3 on page 8.
When pressure is applied to the isolating diaphragm, the oil deflects the sensor which then changes its
capacitance or voltage signal. This signal is then changed to a digital signal by the Signal Processing. The
microprocessor then takes the signals from the Signal Processing and calculates the correct output of
the transmitter. This signal is then sent to the D/A converter, which converts the signal back to the
analog signal, then superimposes the HART signal on the 4–20 mA output.
An optional LCD display can be ordered that connects directly to the interface board which maintains
direct access to the signal terminals. The display indicates output and abbreviated diagnostic messages.
A glass display cover is provided. For 4-20 mA HART output, the LCD display features a two-line display.
The first line displays the actual measured value, the second line of six characters displays the
engineering units. The LCD display can also display diagnostic messages.
Note
LCD display utilizes a 5 ⫻6 character display and can display output and diagnostic messages. The LOI
display uses an 8 ⫻6 character display and can display output, diagnostic messages, and LOI menu
screens. The LOI display comes with two buttons mounted on the front of the display board. See
Figure 2-2.
Figure 2-2. LCD/LOI display
LCD display LOI display

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Figure 2-3. Block Diagram Of Operation
A. Sensor module electronics
B. 4-20 mA signal to control system
C. Field communicator
AB
C
Signal Processing
Temp.
Sensor
Sensor Module
Memory
Microprocessor
•Sensor linearization
•Rerange
•Damping
•Diagnostics
•Engineering units
•Communication
Memory
•Configuration
Digital-to-
Analog Signal
Conversion
Digital
Communication
Pressure
Sensor

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2.5 Configuration overview
This section contains information on commissioning and tasks that should be performed on the bench
prior to installation, as well as tasks performed after installation as described in “Performing transmitter
tests” on page 21.
Field Communicator, AMS Device Manager, and Local Operator Interface (LOI) instructions are given to
perform configuration functions. For convenience, Field Communicator Fast Key sequences are labeled
“Fast Keys,” and abbreviated LOI menus are provided for each function below.
Full Field Communicator menu trees and Fast Key sequences are available in Appendix C: Field
Communicator Menu Trees and Fast Keys. LOI menu trees are available in Appendix D: Local Operator
Interface.
2.6 Configuration basics
The Rosemount 2051G can be configured either before or after installation. Configuring the transmitter
on the bench using either a Field Communicator, AMS Device Manager, or LOI ensures all transmitter
components are in working order prior to installation. Verify that the security switch is set in the unlock
position ( ) in order to proceed with configuration. See Figure 4-2 on page 37 for switch location.
2.6.1 Configuring on the bench
To configure on the bench, required equipment includes a power supply, and a Field Communicator,
AMS Device Manager, or an LOI (option M4). Wire equipment as shown in Figure 2-4 below. To ensure
successful HART communication, a resistance of at least 250 Ωs must be present between the
transmitter and the power supply, see “Power supply” on page 40 for details. Connect the Field
Communicator leads to the terminals labeled “COMM” on the terminal block.
Figure 2-4. Wiring the Transmitter (4–20 mA HART)
A. Vdc supply
B. R L≥250 (necessary for HART communication only)
Set all transmitter hardware adjustments during commissioning to avoid exposing the transmitter
electronics to the plant environment after installation.
A
B

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2.6.2 Configuration tools
Configuring with a Field Communicator
There are two interfaces available with the Field Communicator: Traditional and Dashboard interfaces.
All steps using a Field Communicator will be described using Dashboard interfaces. HART shows the
Device Dashboard interface. As stated in System readiness , it is critical that the latest DD’s are loaded
into the Field Communicator. Visit Emerson.com or FieldCommGroup.org to download latest DD library.
Field Communicator menu trees and Fast Keys are available in Appendix C: Field Communicator Menu
Trees and Fast Keys.
Figure 2-5. Device Dashboard
Configuring with AMS Device Manager
Full configuration capability with AMS Device Manager requires loading the most current Device
Descriptor (DD) for this device. Download the latest DD at Emerson.com or FieldCommGroup.org.
Note
All steps using AMS Device Manager will be described using version 11.5.
Configuring with a local operator interface
The LOI requires option code M4 to be ordered. To activate the LOI push either configuration button.
Configuration buttons are located on the LCD display (must remove housing cover to access), or
underneath the top tag of the transmitter. See Table 2-2 for configuration button functionality and
Figure 2-6 for configuration button location. When using the LOI for configuration, several features
require multiple screens for a successful configuration. Data entered will be saved on a screen-by-screen
basis; the LOI will indicate this by flashing “SAVED” on the LCD display each time.
LOI menu trees are available in Appendix D: Local Operator Interface.
SAVE
1. Overview
2. Configure
3. Service Tools
2051 FT 45B
Online

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Figure 2-6. LOI Configuration Buttons
A. Internal configuration buttons
B. External configuration buttons
Table 2-2. LOI Button Operation
2.6.3 Setting the loop to manual
Whenever sending or requesting data that would disrupt the loop or change the output of the
transmitter, set the process application loop to manual control. The Field Communicator, AMS Device
Manager, or the LOI will prompt you to set the loop to manual when necessary. The prompt is only a
reminder; acknowledging this prompt does not set the loop to manual. It is necessary to set the loop to
manual control as a separate operation.
2.7 Verify configuration
It is recommended that various configuration parameters are verified prior to installation into the
process. The various parameters are detailed out for each configuration tool. Depending on what
configuration tool(s) are available follow the steps listed relevant to each tool.
2.7.1 Field Communicator
Configuration parameters listed in Table 2-3 are to be reviewed prior to transmitter installation. A full list
of configuration parameters that can be reviewed and configured using a Field Communicator is located
in Appendix B: Field Communicator Menu Trees and Fast Keys.
Fast key sequences for the latest DD are shown in Table 2-3. For Fast Key sequences for legacy DD's
contact your local Emerson Representative.
Button
Left No SCROLL
Right Yes ENTER
B
A

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Table 2-3. Device Dashboard Fast Key Sequence
2.7.2 AMS Device Manager
Right click on the device and select Configuration Properties from the menu. Navigate the tabs to
review the transmitter configuration data.
2.7.3 Local operator interface
Press any configuration button to activate the LOI. Select VIEW CONFIG to review the below parameters.
Use the configuration buttons to navigate through the menu. The parameters to be reviewed prior to
installation include:
2.8 Verifying process variables configuration
This section describes how to verify that the correct process variables are selected.
2.8.1 Field Communicator
2.8.2 AMS Device Manager
1. Right click the device and select Overview from the menu.
2. Select the All Variables button to display the primary, secondary, tertiary and quaternary variables.
From the HOME screen, enter the Fast Key sequences listed
Function
Fast Key sequence
HART 7 HART 5
Alarm and Saturation Levels 2, 2, 2, 5 2, 2, 2, 5
Damping 2, 2, 1, 1, 5 2, 2, 1, 1, 5
Primary Variable 2, 1, 1, 4, 1 2, 1, 1, 4, 1
Range Values 2, 1, 1, 4 2, 1, 1, 4
Tag 2, 2, 7, 1, 1 2, 2, 7, 1, 1
Transfer Function 2, 2, 1, 1, 6 2, 2, 1, 1, 6
Units 2, 2, 1, 1, 4 2, 2, 1, 1, 4
Tag Primary Variable
Units Range Values
Transfer Function Damping
Alarm and Saturation Levels
From the HOME screen, enter the Fast Key sequence
Device Dashboard Fast Keys 3, 2, 1