Rosemount 2051L, 2051C Operating Manual

Reference Manual

00809-0100-4107, Rev CA

July 2017

Rosemount™ 2051 Pressure Transmitter

with HART® Revision 5 and 7 Selectable Protocol

Reference Manual	Title Page
00809-0100-4107, Rev CA	July 2017

Rosemount™ 2051 Pressure Transmitter

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™ 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.

Title Page

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Title Page		Reference Manual
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Reference Manual	Contents
00809-0100-4107, Rev CA	July 2017

Contents

Section 1: Introduction

1.1 Using this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Models covered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2.1 Rosemount 2051C Coplanar Pressure Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2.2 Rosemount 2051T in-line Pressure Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2.3 Rosemount 2051L Level Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2.4 Rosemount 2051CF Series Flowmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.3 HART installation flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.4 Transmitter overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.5 Service support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.6 Product recycling/disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Section 2: Configuration

2.1 Configuration overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3 System readiness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.3.1 Confirm correct Device Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.4 Configuration basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4.1 Configuring on the bench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4.2 Configuration tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4.3 Setting the loop to manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.5 Verify configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.5.1 Verifying configuration with Field Communicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.5.2 Verifying configuration with AMS Device Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.5.3 Verifying configuration with LOI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.5.4 Verifying process variables configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.6 Basic setup of the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.6.1 Setting pressure units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2.6.2 Setting transmitter output (transfer function) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2.6.3 Rerange the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2.6.4 Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.7 Configuring the LCD display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.8 Detailed transmitter setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2.8.1 Configuring alarm and saturation levels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2.8.2 Configuring Scaled Variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

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2.8.3 Re-mapping device variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 2.9 Performing transmitter tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2.9.1 Verifying alarm level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2.9.2 Performing an analog loop test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2.9.3 Simulate device variables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 2.10 Configuring burst mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 2.11 Establishing multidrop communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 2.11.1 Changing a transmitter address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 2.11.2 Communicating with a multidropped transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Section 3: Hardware Installation

3.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.2 Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.3 Installation considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.3.1 Mechanical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 3.3.2 Environmental considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 3.4 Installation procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 3.4.1 Mount the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 3.4.2 Impulse piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 3.4.3 Process connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 3.4.4 In-line process connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.5 Rosemount 305, 306, and 304 Manifolds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 3.5.1 Rosemount 305 Integral Manifold installation procedure. . . . . . . . . . . . . . . . . . . . . . . . . . 39 3.5.2 Rosemount 306 Integral Manifold installation procedure. . . . . . . . . . . . . . . . . . . . . . . . . . 40 3.5.3 Rosemount 304 Conventional Manifold installation procedure. . . . . . . . . . . . . . . . . . . . . 40 3.5.4 Manifold operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

3.6 Liquid level measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 3.6.1 Open vessels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 3.6.2 Closed vessels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Section 4: Electrical Installation

4.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 4.2 Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 4.3 Local Operating Interface (LOI)/LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 4.3.1 Rotating LOI/LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 4.4 Configure security and simulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 4.4.1 Security switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 4.4.2 HART Lock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

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4.4.3 Configuration button lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 4.4.4 LOI password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 4.5 Setting transmitter alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

4.6 Electrical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 4.6.1 Conduit installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 4.6.2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 4.6.3 Wiring the transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 4.6.4 Grounding the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Section 5: Operation and Maintenance

5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 5.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 5.3 Recommended calibration tasks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 5.4 Calibration overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 5.4.1 Determining necessary sensor trims. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 5.4.2 Determining calibration frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 5.4.3 Compensating for span line pressure effects (range 4 and range 5). . . . . . . . . . . . . . . . . . 65 5.5 Trim the pressure signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 5.5.1 Sensor trim overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 5.5.2 Perform a sensor trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 5.5.3 Recall factory trim–sensor trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

5.6 Trim the analog output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 5.6.1 Performing digital-to-analog trim (4—20 mA/1—5 V output trim). . . . . . . . . . . . . . . . . . . . 70 5.6.2 Performing digital-to-analog trim (4—20mA/1—5 V output trim) using other scale. . . . . 71 5.6.3 Recalling factory trim–analog output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 5.7 Switching HART Revision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 5.7.1 Switching HART Revision with generic menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 5.7.2 Switching HART Revision with Field Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 5.7.3 Switching HART Revision with AMS Device Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 5.7.4 Switching HART Revision with LOI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Section 6: Troubleshooting

6.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 6.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 6.3 Diagnostic messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 6.3.1 Diagnostic message: Failed - fix now . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 6.3.2 Diagnostic message: Maintenance - fix soon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 6.3.3 Diagnostic message: Advisory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

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6.4 Disassembly procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 6.4.1 Removing from service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 6.4.2 Removing terminal block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 6.4.3 Removing the electronics board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 6.4.4 Removing sensor module from the electronics housing . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

6.5 Reassembly procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 6.5.1 Attaching electronics board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 6.5.2 Installing terminal block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 6.5.3 Reassembling the Rosemount 2051C Process Flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 6.5.4 Installing drain/vent valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Section 7: Safety Instrumented Systems Requirements
7.1 Safety Instrumented Systems (SIS) Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	85
7.1.1 Rosemount 2051 safety certified identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	85
7.1.2 Installation in SIS applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	85
7.1.3 Configuring in SIS applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	86
7.1.4 Rosemount 2051 SIS operation and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	87
7.1.5 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	88

Appendix A: Specifications and Reference Data

A.1 Performance specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 A.1.1 Conformance to specification (±3s [Sigma]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 A.1.2 Reference accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 A.1.3 Flow performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 A.1.4 Dynamic performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

A.2 Functional specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 A.2.1 Range and sensor limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 A.2.2 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 A.2.3 4—20 mA (output code A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 A.2.4 HART 1—5 Vdc low power (output code M) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 A.2.5 Overpressure limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 A.2.6 Static pressure limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 A.2.7 Burst pressure limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 A.2.8 Failure mode alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 A.2.9 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 A.2.10 Humidity limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 A.2.11 Volumetric displacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 A.2.12 Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

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A.3 Physical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 A.3.1 Material selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 A.3.2 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 A.3.3 Process connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 A.3.4 Rosemount 2051C process wetted parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 A.3.5 Rosemount 2051L Process wetted parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 A.3.6 Non-wetted parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 A.3.7 Shipping weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

A.4 Dimensional drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102 A.5 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113 A.5.1 Rosemount 2051C Coplanar Pressure Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113 A.5.2 Rosemount 2051T In-Line Pressure Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120 A.5.3 Rosemount 2051CF Flowmeter Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124 A.5.4 Rosemount 2051L Level Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137 A.6 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142

A.7 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145

Appendix B: Product Certifications

B.1 European Directive Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149 B.2 Ordinary Location Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149 B.3 North America . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149 B.4 Europe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150 B.5 International . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151 B.6 Brazil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .153 B.7 China . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .153 B.8 Japan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155 B.9 Technical Regulations Customs Union (EAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155

B.9.1 Combinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155 B.10 Additional Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155 B.11 Approval drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .157

Appendix C: Field Communicator Menu Trees and Fast Keys

C.1 Field Communicator menu trees. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179 C.2 Field Communicator Fast Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184

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Appendix D: Local Operator Interface

D.1 LOI Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 D.2 LOI Menu Tree - Extended Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186 D.3 Number entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187 D.4 Text entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

Contents

Reference Manual	Introduction
00809-0100-4107, Rev CA	July 2017
Section 1	Introduction

1.1Using this manual

The sections in this manual provide information on installing, operating, and maintaining the Rosemount™ 2051Pressure Transmitter. The sections are organized as follows:

Section 2: Configuration provides instruction on commissioning and operating Rosemount 2051. 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: Specifications and Reference Data supplies reference and specification data, as well as ordering information.

Appendix B: Product Certifications contains intrinsic safety approval information, European ATEX directive information, and approval drawings.

Appendix C: Field Communicator Menu Trees and Fast Keys provides full menu trees and abbreviated Fast Key sequences for commissioning tasks.

Appendix D: Local Operator Interface provides detailed LOI menu trees.

Introduction

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1.2Models covered

The following Rosemount 2051 are covered by this manual:

1.2.1Rosemount 2051C Coplanar Pressure Transmitter

Measures differential and gage pressure up to 2000 psi (137,9 bar).

1.2.2Rosemount 2051T in-line Pressure Transmitter

Measures gage/absolute pressure up to 10000 psi (689,5 bar).

1.2.3Rosemount 2051L Level Transmitter

Measures level and specific gravity up to 300 psi (20,7 bar).

1.2.4Rosemount 2051CF Series Flowmeter

Measures flow in line sizes from 1/2-in. (15 mm) to 96-in. (2400 mm).

Note

For Rosemount 2051 with FOUNDATION™ Fieldbus, see Rosemount 2051 Pressure Transmitter with FOUNDATION Fieldbus Protocol Reference Manual. For Rosemount 2051 with PROFIBUS ® PA, see Rosemount 2051 Pressure Transmitter with PROFIBUS PA Protocol Reference Manual.

2	Introduction

Reference Manual	Introduction
00809-0100-4107, Rev CA	July 2017

1.3HART installation flowchart

Figure 1-1. HART Installation Flowchart

START HERE

	Bench
	calibration?	No			Field Install
	Yes
					Configure
Configure for	Configure for Level	Configure for Flow			Security and
			Verify		Alarm
Pressure
					(page 50)
					Mount Transmitter
Set Units	Configure Scaled	Configure Scaled	Review Transmitter		(page 30)
(page 13)	Variable	Variable	Configuration
	(page 22)	(page 22)	(page 11)
Set Range Points	Set Scaled	Set Scaled			Check Process
					Connection
(page 15)	Variable to PV	Variable to PV
					(page 37)
	(page 22)	(page 22)	Apply Pressure
Select Linear					Wire Transmitter
					(page 55)
Output
(page 13)
			Within	Yes	Power Transmitter
			specifications?
					(page 54)
	Set Damping		No
	(page 17)
					Confirm
			Refer to		Transmitter
					Configuration
			Section 5:
					(page 11)
			Operation and
			Maintenance
					Trim the
					Transmitter
					(page 66)
					Done

Introduction

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1.4Transmitter overview

The Rosemount 2051C Coplanar™ design is offered for Differential Pressure (DP) and Gage Pressure (GP) measurements. The Rosemount 2051C utilizes capacitance sensor technology for DP and GP measurements. The Rosemount 2051T utilizes piezoresistive sensor technology for AP and GP measurements.

The major components of the Rosemount 2051 are the sensor module and the electronics housing. The sensor module contains the oil filled sensor system (isolating diaphragms, oil fill system, and sensor) and the sensor electronics. The sensor electronics are installed within the sensor module and include a temperature sensor, a memory module, and the analog to digital signal converter (A/D converter). The electrical signals from the sensor module are transmitted to the output electronics in the electronics housing. The electronics housing contains the output electronics board, the optional external configuration buttons, and the terminal block. The basic block diagram of the Rosemount 2051CD is illustrated in Figure 1-3 on page 5.

For the Rosemount 2051, pressure is applied to the isolating diaphragm(s). 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 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 can also display diagnostic messages.

Note

LCD Display utilizes a 5 x 6 character display and can display output and diagnostic messages. The LOI Display uses an 8 x 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 below figure.

Figure 1-2. LOI/LCD Display

LCD Display

LOI Display

4	Introduction

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00809-0100-4107, Rev CA			July 2017
	Figure 1-3. Block Diagram of Operation
	A	B	C

	Signal Processing
			Microprocessor	Digital-to
	Temp.	Sensor Module	• Sensor linearization	Analog Signal
		Memory	• Rerange	Conversion
	Sensor		• Damping
			• Diagnostics	Digital
			• Engineering units
				Communication
			• Communication
			Memory
			• Configuration

D

A.Sensor module

B.Electronics board

C.4—20 mA signal to control system

D.Field Communicator

1.5Service support

Within the United States, call the Emerson Instrument and Valve 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.

For inquiries outside of the United States, contact the nearest Emerson representative for RMA instructions.

To expedite the return process outside of the United States, contact the nearest Emerson representative.

Individuals who handle products exposed to a hazardous substance can avoid injury if they are informed of and understand the hazard. The product being returned will require a copy of the required Material Safety Data Sheet (MSDS) for each substance must be included with the returned goods.

Emerson Instrument and Valve Response Center representatives will explain the additional information and procedures necessary to return goods exposed to hazardous substances.

Introduction

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July 2017	00809-0100-4107, Rev CA

1.6Product recycling/disposal

Recycling of equipment and packaging should be taken into consideration and disposed of in accordance with local and national legislation/regulations.

6	Introduction

Reference Manual		Configuration
00809-0100-4107, Rev CA		July 2017
Section 2		Configuration

Configuration overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 7 Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 7 System readiness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8 Configuration basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 9 Verify configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 11 Basic setup of the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 13 Configuring the LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 18 Detailed transmitter setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 19 Performing transmitter tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 24 Configuring burst mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 25 Establishing multidrop communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 26

2.1Configuration 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 24.

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.

2.2Safety 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.

Configuration

7

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July 2017			00809-0100-4107, Rev CA

Explosions could result in death or serious injury.

Installation of this transmitter in an explosive environment must be in accordance with the appropriate local, national, and international standards, codes, and practices. Review the approvals section of the Rosemount™ 2051 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.

2.3System readiness

If using HART® based control or asset management systems, confirm the HART Protocol 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 72.

2.3.1Confirm 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.In the browse by member dropdown menu, select Rosemount business unit of Emerson™.

4.Select desired Product

a.Within Table 2-1, use the HART Universal Revision and Device Revision numbers to find the correct Device Driver

Table 2-1. Rosemount 2051 Device Revisions and Files

		Identify device		Find Device Driver		Review	Review
						instructions	functionality
	Software	NAMUR	HART	HART	Device	Reference	Changes to
		software	software	universal
	release date				revision(3)	manual	software
		revision(1)	revision(2)	revision
	August 2012	1.0.0	01	7	10	Rosemount 2051	(4)
						Reference Manual
				5	9
	January 1998	N/A	178	5	3	Rosemount 2051	N/A
						Reference Manual

1.NAMUR Software Revision is located on the hardware tag of the device

2.HART Software Revision can be read using a HART capable configuration tool.

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.

8	Configuration

Reference Manual		Configuration
00809-0100-4107, Rev CA		July 2017

4.HART Revision 5 and 7 Selectable, Safety Certified, Local Operator Interface, Scaled Variable, Configurable Alarms, Expanded Engineering Units.

2.4Configuration basics

Set all transmitter hardware adjustments during commissioning to avoid exposing the transmitter electronics to the plant environment after installation.

The Rosemount 2051 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 51 for switch location.

2.4.1Configuring 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 below. To ensure successful HART communication, a resistance of at least 250 s must be present between the transmitter and the power supply, see “Power supply” on page 54 for details. Connect the Field Communicator leads to the terminals labeled “COMM” on the terminal block or 1—5 V configuration, wire as shown in Figure 2-1 on page 9. The Field communicator is connected to the terminals labeled VOUT/COMM.

Figure 2-1. Wiring the Transmitter (4—20 mA HART Protocol)

B

A

A. Vdc supply

B. RL 250 (necessary for HART communication only)

Configuration

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2.4.2Configuration tools

Figure 2-2. Wiring the Transmitter (1—5 Vdc Low Power)

A

B

A.DC power supply

B.Voltmeter

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. Figure 2-3 on page 10 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 2-3. Device Dashboard

2051 FT 45B

Online

1.Overview

2.Configure

3.Service Tools

SAVE

Configuring with AMS Device Manager

Full configuration capability with AMS Device Manager requires loading the most current 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.

10	Configuration

Reference Manual	Configuration
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Configuring with a LOI

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 2-4 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.

Figure 2-4. LOI Configuration Buttons

A B

A.Internal configuration buttons

B.External configuration buttons

Table 2-2. LOI Button Operation

Button
Left		No			SCROLL
Right		Yes			ENTER

2.4.3Setting 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.

2.5Verify 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.

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2.5.1Verifying configuration with 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 are located in Appendix C: 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.

Table 2-3. Rosemount 2051 Device Dashboard Fast Key Sequence

From the HOME screen, enter the Fast Key sequences listed

	Fast Key Sequence
Function	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

2.5.2Verifying configuration with AMS Device Manager

Right click on the device and select Configuration Properties from the menu. Navigate the tabs to review the transmitter configuration data.

2.5.3Verifying configuration with LOI

Select 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:

	Tag		Primary variable
	Units		Range values
	Transfer function		Damping

Alarm and saturation levels

2.5.4Verifying process variables configuration

This section describes how to verify that the correct process variables are selected.

Verifying process variables with a Field Communicator

From the HOME screen, enter the Fast Key sequence

Device Dashboard Fast Keys	3, 2, 1

Verifying process variables with AMS Device Manager

Right click on the device and select Overview from the menu.

1. Select the All Variables button to display the primary, secondary, tertiary and quaternary variables.

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2.6Basic setup of the transmitter

This section goes through the necessary steps for basic setup of a pressure transmitter. When installing in DP level or DP flow applications, refer to“Configuring Scaled Variable” on page 20 for setup instructions.

2.6.1Setting pressure units

The pressure unit command sets the unit of measure for the reported pressure.

Setting pressure units with a Field Communicator

From the HOME screen, enter the Fast Key sequence

Device Dashboard Fast Keys	2, 2, 1, 1, 4

Setting pressure units with AMS Device Manager

Right click on the device and select Configure.

1.Select Manual Setup and select desired units from Pressure Units dropdown menu.

2.Select Send when complete.

Setting pressure units with a LOI

Follow Figure 2-5 on page 13 to select desired pressure and temperature units. Use the SCROLL and ENTER buttons to select desired unit. Save by selecting SAVE as indicated on the LCD display.

Figure 2-5. Selecting Units with LOI

		VIEW CONFIG				UNITS				PRESS UNITS
		ZERO TRIM				PRESS UNITS				INH2O
		UNITS				TEMP UNITS				MMHG
		RERANGE				BACK TO MENU				CMHG0C
		LOOP TEST				EXIT MENU				MHG0C
		DISPLAY								PSI
		EXTENDED MENU								PSF
		EXIT MENU								ATM
										TORR
										PA
										KPA
										...

2.6.2Setting transmitter output (transfer function)

The Rosemount 2051 has two output settings: Linear and square root. As shown in Figure 2-7 on page 14, activating the square root options makes analog output proportional to flow, and includes a fixed low flow cutoff at five percent.

However, for DP Flow and DP Level applications it is recommended to use scaled variable. Refer to “Configuring Scaled Variable” on page 20 for setup instructions.

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Setting transmitter output with a Field Communicator

From the HOME screen, enter the Fast Key sequence

Device Dashboard Fast Keys	2, 2, 1, 1, 6

Setting transmitter output with AMS Device Manager

Right click on the device and select Configure.

1.Select Manual Setup and choose output type from analog output transfer function and select Send.

2.Carefully read the warning and select Yes if it is safe to apply the changes.

Setting transmitter output with a LOI

Reference Figure 2-6 on page 14 to select either linear or square root transfer function using the LOI.

Figure 2-6. Set Output with LOI

VIEW CONFIG				EXTENDED MENU
ZERO TRIM				CALIBRAT
UNITS				DAMPING
RERANGE				TRANSFER FUNCT			TRANSFER FUNCT
LOOP TEST				SCALED VARIAB			LINEAR TRANSFER
DISPLAY				ASSIGN PV			FUNCTION
EXTENDED MENU				TAG			SQR ROOT TRANSFER
EXIT MENU				ALARM SAT			FUNCTION
				VALUES			BACK TO MENU
				PASSWORD			EXIT MENU
				SIMLATE
				HART REV
				BACK TO MENU
				EXIT MENU

Figure 2-7. 4—20 mA HART Square Root Output Transition Point

20mA

A

A

B

4 mA

C B

0

10

20

30

40

50

60

70

80

90

100

% Pressure Input

4 mA

0

0.5

1

%Pressure Input

A.Square root curve

B.Five percent transition point

C.Four percent transition point

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2.6.3Rerange the transmitter

The Range Values command sets each of the lower and upper range analog values (4 and 20 mA/1—5 Vdc points) to a pressure. The lower range point represents zero percent of range and the upper range point represents 100 percent of range. In practice, the transmitter range values may be changed as often as necessary to reflect changing process requirements. For a complete listing of range and sensor limits, refer to “Range and sensor limits” on page 95.

Select from one of the methods below to rerange the transmitter. Each method is unique; examine all options closely before deciding which method works best for your process.

Rerange by manually setting range points with a Field Communicator, AMS Device Manager, or LOI.

Rerange with a pressure input source and a Field Communicator, AMS Device Manager, LOI, or local zero and span buttons.

Manually rerange the transmitter by entering range points

Entering range points with a Field Communicator

From the HOME screen, enter the Fast Key sequence

Device Dashboard Fast Keys	2, 2, 2, 1

Entering range points with AMS Device Manager

Right click on the device and select Configure:

1.Select Manual Setup and select Analog Output.

2.Enter upper and lower range values in the Range Limits box and select Send.

3.Carefully read the warning and select Yes if it is safe to apply the changes.

Entering range points with a LOI

Reference Figure 2-8 on page 15 to rerange the transmitter using the LOI. Enter values using SCROLL and ENTER buttons.

Figure 2-8. Rerange with LOI

	VIEW CONFIG				RERANGE
	ZERO TRIM				ENTER VALUES			ENTER VALUES
	UNITS				APPLY VALUES			LRV
	RERANGE				BACK TO MENU			URV
	LOOP TEST				EXIT MENU			BACK TO MENU
	DISPLAY							EXIT MENU
	EXTENDED MENU
	EXIT MENU

Rerange the transmitter with applied pressure source

Reranging using an applied pressure source is a way of reranging the transmitter without entering specific 4 and 20 mA (1—5 Vdc) points.

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	Field Communicator
	From the HOME screen, enter the Fast Key sequence
	Device Dashboard Fast Keys	2, 2, 2, 2

Rerange with an applied pressure source using AMS Device Manager

Right click on the device, select Configure.

1.Select the Analog Output tab.

2.Select Range by Applying Pressure button and follow the screen prompts range the transmitter.

Rerange with an applied pressure source using an LOI

Use Figure 2-9 to manually rerange the device using an applied pressure source with an LOI.

Figure 2-9. Rerange with Applied Pressure Using LOI

	VIEW CONFIG				RERANGE
	ZERO TRIM				ENTER VALUES
								APPLY VALUES
	UNITS				APPLY VALUES
	RERANGE				BACK TO MENU			LRV
								URV
	LOOP TEST				EXIT MENU
								BACK TO MENU
	DISPLAY
								EXIT MENU
	EXTENDED MENU
	EXIT MENU

Rerange with an applied pressure source using local zero and span buttons

If ordered, local zero and span buttons (option code D4) can be used to rerange the transmitter with an applied pressure. Refer to Figure 2-10 on page 17 for analog zero and span button location.

To rerange the transmitter using the span and zero buttons, perform the following procedure:

1.Loosen the screw holding the top tag of the transmitter housing. Rotate the label to expose the zero and span buttons.

2.Confirm device has local zero and span buttons by verifying blue retainer under the tag.

3.Apply transmitter pressure.

4.Rerange the transmitter.

a.To change the zero (4 mA/1 V point) while maintaining the span: press and hold zero button for at least two seconds then release.

b.To change the span (20 mA/5 V point) while maintaining the zero point: press and hold the span button for at least two seconds and then release.

Note

4 mA and 20 mA points must maintain the minimum span defined in Appendix A: Specifications and Reference Data.

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		Figure 2-10. Analog Zero and Span Buttons

A

A. Zero and span buttons

If the transmitter security is on, adjustments to the zero and span will not be able to be made. Refer to “Configure security and simulation” on page 50 for security information.

The span is maintained when the 4 mA/1 V point is set. The span changes when the 20 mA/5 V point is set. If the lower range point is set to a value that causes the upper range point to exceed the sensor limit, the upper range point is automatically set to the sensor limit, and the span is adjusted accordingly.

Regardless of the range points, the Rosemount 2051 will measure and report all readings within the

digital limits of the sensor. For example, if the 4 and 20 mA(1—5 Vdc) points are set to 0 and 10 inH2O, and the transmitter detects a pressure of 25 inH2O, it digitally outputs the 25 inH2O reading and a 250 percent of range reading.

2.6.4Damping

The damping command changes the response time of the transmitter; higher values can smooth variations in output readings caused by rapid input changes. Determine the appropriate damping setting based on the necessary response time, signal stability, and other requirements of the loop dynamics within your system. The damping command utilizes floating point configuration allowing the user to input any damping value within 0.0—60.0 seconds.

Damping with a Field Communicator

From the HOME screen, enter the Fast Key sequence

Device Dashboard Fast Keys	2, 2, 1, 1, 5

Enter desired Damping Value and select APPLY.

Damping with AMS Device Manager

Right select on the device and select Configure.

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1.Select Manual Setup.

2.Within the Pressure Setup box, enter desired damping value and select Send.

3.Carefully read the warning and select Yes if it is safe to apply the changes.

Damping with a LOI

Reference Figure 2-11 to enter damping values using an LOI.

Figure 2-11. Damping with LOI

	VIEW CONFIG				EXTENDED MENU
	ZERO TRIM				CALIBRAT
	UNITS				DAMPING
	RERANGE				TRANSFER FUNCT
	LOOP TEST				SCALED VARIAB
	DISPLAY				ASSIGN PV
	EXTENDED MENU				TAG
	EXIT MENU				ALARM SAT VALUES
					PASSWORD
					SIMLATE
					HART REV
					BACK TO MENU
					EXIT MENU

2.7Configuring the LCD display

The LCD display configuration command allows customization of the LCD display to suit application requirements. The LCD display will alternate between the selected items.

	Pressure units		Sensor temperature
	% of range		mA/Vdc output
	Scaled variable

In the following instructions, the LCD display can also be configured to display configuration information during the device startup. Select Review Parameters at Startup to enable or disable this functionality.

Reference Figure 1-2 on page 4 LCD display with LOI for image of LCD screen.

Configuring LCD Display with a Field Communicator

From the HOME screen, enter the Fast Key sequence

Device Dashboard Fast Keys	2, 2, 4

Configuring LCD display with AMS Device Manager

Right click on the device and select Configure.

1. Select Manual Setup, select the Display tab.

2. Select desired display options and select Send.

Configuring LCD display with a LOI

Refer to Figure 2-12 for LCD display configuration using a LOI.

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		Figure 2-12. Display with LOI
			VIEW CONFIG
			ZERO TRIM				DISPLAY
			UNITS				PRESS (on/off)
			RERANGE				SCALED (on/off)
			LOOP TEST				TEMP (on/off)
			DISPLAY				%RANGE (on/off)
			EXTENDED MENU				ANALOG (on/off)
			EXIT MENU				STRTUP (on/off)
							BACK TO MENU
							EXIT MENU

2.8Detailed transmitter setup

2.8.1Configuring alarm and saturation levels

In normal operation, the transmitter will drive the output in response to pressure from the lower to upper saturation points. If the pressure goes outside the sensor limits, or if the output would be beyond the saturation points, the output will be limited to the associated saturation point.

The Rosemount 2051 Transmitter automatically and continuously performs self-diagnostic routines. If the self-diagnostic routines detect a failure, the transmitter drives the output to configured alarm and value based on the position of the alarm switch. See “Setting transmitter alarm” on page 53.

Table 2-4. Rosemount Alarm and Saturation Values

Level	4—20 mA saturation	4—20 mA alarm
Low	3.9 mA (0.97 V)	3.75 mA (0.95 V)
High	20.8 mA (5.2 V)	21.75 mA (5.4 V)

Table 2-5. NAMUR-Compliant Alarm and Saturation Values

Level	4—20 mA saturation	4—20 mA alarm
Low	3.8 mA (0.95 V)	3.6 mA (0.9 V)
High	20.5 mA (5.125 V)	22.5 mA (5.625 V)
Table 2-6. Custom Alarm and Saturation Values
Level	4—20 mA saturation	4—20 mA alarm
Low	3.7 mA to 3.9 mA	3.6 mA to 3.8 mA
High	20.1 mA to 22.9 mA	20.2 mA to 23.0 mA

Failure mode alarm and saturation levels can be configured using a Field Communicator, AMS Device Manager, and the LOI. The following limitations exist for custom levels:

Low alarm level must be less than the low saturation level

High alarm level must be higher than the high saturation level

Alarm and saturation levels must be separated by at least 0.1 mA

The configuration tool will provide an error message if the configuration rule is violated.

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Note

Transmitters set to HART multidrop mode send all saturation and alarm information digitally; saturation and alarm conditions will not affect the analog output. See also “Establishing multidrop communication” on page 26.

Configuring alarm and saturation levels using a Field Communicator

From the HOME screen, enter the Fast Key sequence

Device Dashboard Fast Keys	2, 2, 2, 5

Configuring alarm and saturation levels with AMS Device Manager

Right click on the device, and select Configure.

1.Select Configure Alarm and Saturation Levels button.

2.Follow screen prompts to configure Alarm and Saturation Levels.

Configuring alarm and saturation levels using LOI

Refer to Figure 2-13 for instructions to configure alarm and saturation levels.

Figure 2-13. Configuring Alarm and Saturation with LOI

		VIEW CONFIG				EXTENDED MENU
		ZERO TRIM				CALIBRAT
		UNITS				DAMPING
		RERANGE				TRANSFER FUNCT
		LOOP TEST				SCALED VARIAB
		DISPLAY				ASSIGN PV
		EXTENDED MENU				TAG			ALARM SAT VALUES
		EXIT MENU				ALARM SAT VALUES			ROSEMOUNT VALUES
						PASSWORD			NAMUR VALUES
						SIMULATE			OTHER VALUES
						HART REV			BACK TO MENU
						BACK TO MENU			EXIT MENU
						EXIT MENU

2.8.2Configuring Scaled Variable

The Scaled Variable configuration allows the user to create a relationship/conversion between the pressure units and user-defined/custom units. There are two use cases for scaled variable. The first use case is to allow custom units to be displayed on the transmitter's LOI/LCD display. The second use case is to allow custom units to drive the transmitter's 4—20 mA output.

If the user desires custom units to drive the 4—20 mA (1—5 Vdc) output, scaled variable must be re-mapped as the primary variable. Refer to “Re-mapping device variables” on page 23.

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