Rosemount 2051L, 2051C Operating Manual

Download

00809-0100-4107, Rev CA

Rosemount™ 2051 Pressure Transmitter

with HART® Revision 5 and 7 Selectable Protocol

Reference Manual

July 2017

Reference Manual

NOTICE

00809-0100-4107, Rev CA

Rosemount™ 2051 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.

Title Page

July 2017

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

July 2017

Reference Manual

00809-0100-4107, Rev CA

Title Page

Reference Manual

00809-0100-4107, Rev CA

1Section 1: Introduction

1.1 Using this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Models covered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.3 HART installation flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.4 Transmitter overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.5 Service support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.6 Product recycling/disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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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

2Section 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

Content s

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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Reference Manual

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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

3Section 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

4Section 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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4.5 Setting transmitter alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

4.6 Electrical considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

5Section 5: Operation and Maintenance

5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

5.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

5.3 Recommended calibration tasks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

5.4 Calibration overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

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4.4.3 Configuration button lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

4.4.4 LOI password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

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

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

6Section 6: Troubleshooting

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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

7Section 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

AAppendix 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

Contents

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A.3 Physical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

A.4 Dimensional drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

A.5 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113

Contents

July 2017

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.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

BAppendix 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

CAppendix C: Field Communicator Menu Trees and Fast Keys

Content s

C.1 Field Communicator menu trees. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179

C.2 Field Communicator Fast Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184

Contents

July 2017

Reference Manual

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DAppendix 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

00809-0100-4107, Rev CA

Section 1 Introduction

1.1 Using this manual

The sections in this manual provide information on installing, operating, and maintaining the Rosemount

 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

 Section 6: Troubleshooting provides troubleshooting techniques for the most common operating

proble

™

2051Pressure Transmitter. The sections are organized as follows:

Revisions.

ms.

Introduction

July 2017

 Section 7: Safety Instrumented Systems Requirements provides identification, installation,

onfiguration, 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

ast Key sequences for commissioning tasks.

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

Introduction

July 2017

1.2 Models covered

The following Rosemount 2051 are covered by this manual:

1.2.1 Rosemount 2051C Coplanar Pressure Transmitter

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

1.2.2 Rosemount 2051T in-line Pressure Transmitter

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

1.2.3 Rosemount 2051L Level Transmitter

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

1.2.4 Rosemount 2051CF Series Flowmeter

 Measures flow in line sizes from

/2-in. (15 mm) to 96-in. (2400 mm).

Reference Manual

00809-0100-4107, Rev CA

Note

For Rosemount 2051 with F F

OUNDATION Fieldbus Protocol Reference Manual. For Rosemount 2051 with PROFIBUS

Rosemount 2051 Pressure Transmitter with PROFIBUS PA Protocol Reference Manual.

OUNDATION

™

Fieldbus, see Rosemount 2051 Pressure Transmitter with

PA, see

Introduction

Reference Manual

START HERE

Bench

calibration?

Field Install

Set Units

(page 13)

Set Range Points

(page 15)

Select Linear

Output

(page 13)

Set Damping

(page 17)

Ver ify

Apply Pressure

Yes

Within

specifications?

Yes

Refer to

Section 5:

Operation and

Maintenance

Configure

Security and

Alarm

(page 50)

Mount Transmitter

(page 30)

Wire Transmitter

(page 55)

Power Transmitter

(page 54)

Tri m the

Tra ns mi tt er

(page 66)

Done

Review Transmitter

Configuration

(page 11)

Confirm

Tra ns mi tt er

Configuration

(page 11)

Configure for

Pressure

Configure Scaled

Var iable

(page 22)

Set Scaled

Variable to PV

(page 22)

Configure for Level Configure for Flow

Configure Scaled

Var iable

(page 22)

Set Scaled

Variable to PV

(page 22)

Check Process

Connection

(page 37)

00809-0100-4107, Rev CA

1.3 HART installation flowchart

Figure 1-1. HART Installation Flowchart

Introduction

July 2017

Introduction

July 2017

1.4 Transmitter 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.

Reference Manual

00809-0100-4107, Rev CA

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

Introduction

Reference Manual

ABC

Signal Processing

Tem p. Sensor

Sensor Module Memory

Microprocessor

• Sensor linearization

• Rerange

• Damping

• Diagnostics

• Engineering units

• Communication

Digital-to Analog Signal Conversion

Digital Communication

Memory

• Configuration

00809-0100-4107, Rev CA

Figure 1-3. Block Diagram of Operation

Introduction

July 2017

1.5 Service support

A. Sensor module B. Electronics board C. 4—20 mA signal to control system D. Field Communicator

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

July 2017

1.6 Product recycling/disposal

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

Reference Manual

00809-0100-4107, Rev CA

Introduction

Reference Manual

00809-0100-4107, Rev CA

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

Configuration

July 2017

2.1 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 24.

Field Communicator, AMS 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.

™

Device Manager, and Local Operator Interface (LOI) instructions are given to

2.2 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.

Config uration

Configuration

July 2017

Reference Manual

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

 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.

™

2051 reference manual for any restrictions associated with a safe installation.

2.3 System readiness

 If using HART

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.

2.3.1 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

3. In the browse by member dropdown menu, select Rosemount business unit of Emerson

4. Select desired Product

a. Within Ta b le 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

Software

release date

August 2012 1.0.0 01

January 1998 N/A 178 5 3

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

2. HART Soft ware 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.

based control or asset management systems, confirm the HART Protocol capability of

or FieldCommGroup.org for the latest DD.

Identify device Find Device Driver

NAMUR

software

revision

(1)

HART

software

revision

(2)

HART

universal

revision

Device

revision

7 10 5 9

instructions

Reference

(3)

Rosemount 2051

Reference Manual

Rosemount 2051

Reference Manual

Review

manual

™

Review

functionality

Changes to

software

(4)

N/A

Configuration

Reference Manual

00809-0100-4107, Rev CA

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

2.4 Configuration 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.

2.4.1 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 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.

Configuration

July 2017

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

A. Vdc supply B. R

 250 (necessary for HART communication only)

Config uration

Configuration

SAVE

1. Overview

2. Configure

3. Service Tools

2051 FT 45B Online

July 2017

2.4.2 Configuration tools

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

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 library.

Reference Manual

00809-0100-4107, Rev CA

or FieldCommGroup.org to download latest DD

Field Communicator menu trees and Fast Keys are available in Appendix C: Field Communicator Menu

Trees and Fast Keys.

Figure 2-3. Device Dashboard

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

Note

All steps using AMS Device Manager will be described using version 11.5.

or FieldCommGroup.org.

Configuration

Reference Manual

00809-0100-4107, Rev CA

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 Ta b l e 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

Configuration

July 2017

A. Internal configuration buttons B. External configuration buttons

Table 2-2. LOI Button Operation

Button

Left No SCROLL Right Yes ENTER

2.4.3 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.

2.5 Verify configuration

Config uration

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.

Configuration

July 2017

2.5.1 Verifying configuration with Field Communicator

Configuration parameters listed in Ta bl e 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 Tab l e 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

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Function

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 Ta g 2, 2, 7, 1, 1 2, 2, 7, 1, 1 Tra nsfer Fu nctio n 2, 2, 1, 1, 6 2, 2, 1, 1, 6 Units 2, 2, 1, 1, 4 2, 2, 1, 1, 4

HART 7 HART 5

2.5.2 Verifying 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.

2.5.3 Verifying 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. reviewed prior to installation include:

 Tag  Primary variable

 Units  Range values

 Transfer function  Damping

 Alarm and saturation

levels

The parameters to be

2.5.4 Verifying 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

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.

3, 2, 1

Configuration

Reference Manual

UNITS

PRESS UNITS

TEMP UNITS BACK TO MENU EXIT MENU

PRESS UNITS

INH2O MMHG CMHG0C MHG0C PSI PSF ATM TORR PA KPA ...

VIEW CONFIG ZERO TRIM

UNITS

RERANGE LOOP TEST DISPLAY EXTENDED MENU EXIT MENU

00809-0100-4107, Rev CA

2.6 Basic 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.

2.6.1 Setting 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

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.

Configuration

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2, 2, 1, 1, 4

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

2.6.2 Setting 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.

Config uration

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.

Configuration

EXTENDED MENU

CALIBRAT DAMPING

TRANSFER FUNCT

SCALED VARIAB ASSIGN PV TAG ALARM SAT VAL UES PASSWORD SIMLATE HART REV BACK TO MENU EXIT MENU

TRANSFER FUNCT

LINEAR TRANSFER FUNCTION SQR ROOT TRANSFER FUNCTION BACK TO MENU EXIT MENU

VIEW CONFIG ZERO TRIM UNITS RERANGE LOOP TEST DISPLAY

EXTENDED MENU

EXIT MENU

0.5 1

% Pressure Input

0 102030 4050 60 708090100

4 mA

20mA

% Pressure Input

4 mA

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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 Ye s 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

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

A. Square root curve B. Five percent transition point C. Four percent transition point

Configuration

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RERANGE

ENTER VALUES

APPLY VALUES BACK TO MENU EXIT MENU

ENTER VALUES

LRV URV BACK TO MENU EXIT MENU

VIEW CONFIG ZERO TRIM UNITS

RERANGE

LOOP TEST DISPLAY EXTENDED MENU EXIT MENU

00809-0100-4107, Rev CA

2.6.3 Rerange 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

Configuration

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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 Ye s 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

Config uration

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.

Configuration

RERANGE

ENTER VALUES

APPLY VALUES

BACK TO MENU EXIT MENU

APPLY VALUES

LRV URV BACK TO MENU EXIT MENU

VIEW CONFIG ZERO TRIM UNITS

RERANGE

LOOP TEST DISPLAY EXTENDED MENU EXIT MENU

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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

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.

Configuration

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Figure 2-10. Analog Zero and Span Buttons

A. Zero and span buttons

Configuration

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 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 inH and the transmitter detects a pressure of 25 inH percent of range reading.

2.6.4 Damping

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

O, it digitally outputs the 25 inH2O reading and a 250

2, 2, 1, 1, 5

Config uration

Enter desired Damping Value and select APPLY.

Damping with AMS Device Manager

Right select on the device and select Configure.

Configuration

EXTENDED MENU

CALIBRAT

DAMPING

TRANSFER FUNCT SCALED VARIAB ASSIGN PV TAG ALARM SAT VALUES PASSWORD SIMLATE HART REV BACK TO MENU EXIT MENU

VIEW CONFIG ZERO TRIM UNITS RERANGE LOOP TEST DISPLAY

EXTENDED MENU

EXIT MENU

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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 Ye s 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

2.7 Configuring 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.

Configuration

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DISPLAY

PRESS (on/off) SCALED (on/off) TEMP (on/off) %RANGE (on/off) ANALOG (on/off) STRTUP (on/off) BACK TO MENU EXIT MENU

VIEW CONFIG ZERO TRIM UNITS RERANGE LOOP TEST

DISPLAY

EXTENDED MENU EXIT MENU

00809-0100-4107, Rev CA

Figure 2-12. Display with LOI

2.8 Detailed transmitter setup

2.8.1 Configuring 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.

Configuration

July 2017

Config uration

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.

Configuration

EXTENDED MENU

CALIBRAT DAMPING TRANSFER FUNCT SCALED VARIAB ASSIGN PV TAG

ALARM SAT VALUES

PASSWORD SIMULATE HART REV BACK TO MENU EXIT MENU

ALARM SAT VALUES

ROSEMOUNT VALUES NAMUR VALUES OTHER VALUES BACK TO MENU EXIT MENU

VIEW CONFIG ZERO TRIM UNITS RERANGE LOOP TEST DISPLAY

EXTENDED MENU

EXIT MENU

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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

2.8.2 Configuring 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.

Configuration

Reference Manual

EXTENDED MENU

CALIBRAT DAMPING TRANSFER FUNCT

SCALED VARIAB

ASSIGN PV TAG ALARM SAT VALUES PASSWORD SIMLATE HART REV BACK TO MENU EXIT MENU

SCALED VARIAB

VIEW SCALED

CONFIG SCALED

BACK TO MENU EXIT MENU

VIEW CONFIG ZERO TRIM UNITS RERANGE LOOP TEST DISPLAY

EXTENDED MENU

EXIT MENU

00809-0100-4107, Rev CA

The scaled variable configuration defines the following items:

 Scaled Variable units - custom units to be displayed.  Scaled data options - defines the transfer function for the application

— Linear — Square root

 Pressure value position 1 - lower known value point with consideration of linear offset.  Scaled Variable value position 1 - custom unit equivalent to the lower known value point.  Pressure value position 2 - upper known value point.  Scaled Variable value position 2 - custom unit equivalent to the upper known value point  Linear offset - the value required to zero out pressures effecting the desired pressure reading.  Low flow cutoff - point at which output is driven to zero to prevent problems caused by process noise. It

is highly recommended to use the low flow cutoff function in order to have a stable output and avoid problems due to process noise at a low flow or no flow condition. A low flow cutoff value that is practical for the flow element in the application should be entered.

Configuring scaled variable using a Field Communicator

From the HOME screen, enter the Fast Key sequence

Device Dashboard Fast Keys

Configuration

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2, 1, 4, 7

1. Follow the screen prompts to configure Scaled Variable.

a. When configuring for level, select Linear under Select Scaled data options. b. When configuring for flow, select Square Root under Select Scaled data options.

Configuring scaled variable using AMS Device Manager

Right click on the device and, select Configure.

1. Select the Scaled Variable tab and select the Scaled Variable button.

2. Follow screen prompts to configure Scaled Variable

a. When configuring for level applications, select Linear under Select Scaled data options. b. When configuring for flow applications, select Square Root under Select Scaled data options.

Configuring scaled variable using a LOI

Refer to Figure 2-14 on page 21 for instructions to configure scaled variable using a LOI.

Figure 2-14. Configuring Scaled Variable using a Local Operator Interface

Config uration

Configuration

230-in.

200-in.

12-in.

0.94 sg

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DP level example

Figure 2-15. Example Tank

A differential transmitter is used in a level application. Once installed on an empty tank and taps vented, the process variable reading is —209.4 inH

O. The process variable reading is the head pressure created

by fill fluid in the capillary. Based on Table 2-7 on page 22, the scaled variable configuration would be as follows:

Table 2-7. Scaled Variable Configuration for Tank Application

Scaled variable units: inch

Scaled data 13: linear

Pressure value position 1: 0 inH2O

Scaled Variable position 1: 12-in.

Pressure value position 2: 188 inH2O

Scaled Variable position 2: 212-in.

Linear offset: —209.4 inH2O

DP flow example

A differential pressure transmitter is used in conjunction with an orifice plate in a flow application where the differential pressure at full scale flow is 125 inH

scale flow is 20,000 gallons of water per hour. It is highly recommended to use the low flow cutoff function in order to have a stable output and avoid problems due to process noise at a low flow or no flow condition. A low flow cutoff value that is practical for the flow element in the application should be entered. In this particular example, the low flow cutoff value is 1000 gallons of water per hour. Based on this information, the Scaled Variable configuration would be as follows:

O. In this particular application, the flow rate at full

Table 2-8. Scaled Variable Configuration for Flow Application

Scaled Variable units: gal/h

Scaled data options: square root

Pressure value position 2: 125 inH2O

Scaled Variable position 2: 20,000 gal/h

Low Flow Cutoff: 1000 gal/h

Configuration

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VIEW CONFIG ZERO TRIM UNITS RERANGE LOOP TEST DISPLAY

EXTENDED MENU

EXIT MENU

EXTENDED MENU

CALIBRAT DAMPING TRANSFER FUNCT SCALED VARIAB

ASSIGN PV

TAG ALARM SAT VALUES PASSWORD SIMULATE HART REV BACK TO

EXIT MENU

00809-0100-4107, Rev CA

Note

Pressure value position 1 and Scaled Variable position 1 are always set to zero for a flow application. No configuration of these values is required.

2.8.3 Re-mapping device variables

The re-mapping function allows the transmitter primary, secondary, tertiary, and quaternary variables (PV, 2V, 3V, and 4V) to be configured as desired. The PV can be remapped with a Field Communicator, AMS Device Manager, or a LOI. Variables (2V, 3V, and 4V) can only be re-mapped via Field Communicator or AMS Device Manager.

Note

The variable assigned to the primary variable drives the 4—20 mA (1—5 Vdc) output. This value can be selected as pressure or scaled variable. The 2, 3, and 4 variables only apply if HART burst mode is being used.

Re-mapping using a Field Communicator

From the HOME screen, enter the Fast Key sequence

Fast Keys

Configuration

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2, 1, 1, 3

Config uration

Re-mapping using AMS Device Manager

Right click on the device and select Configure.

1. Select Manual Setup and select on the HART tab.

2. Assign Primary, secondary, tertiary, and quaternary variables under Variable Mapping.

3. Select Send.

4. Carefully read the warning and select Ye s if it is safe to apply the changes.

Re-mapping using LOI

Refer to Figure 2-16 for instructions to remap the primary variable using a LOI.

Figure 2-16. Re-Mapping with LOI

Configuration

July 2017

2.9 Performing transmitter tests

2.9.1 Verifying alarm level

If the transmitter electronics board, sensor module, or LOI/LCD display is repaired or replaced, verify the transmitter alarm level before returning the transmitter to service. This is useful in testing the reaction of the control system to a transmitter in an alarm state. Thus ensuring the control system recognizes the alarm when activated. To verify the transmitter alarm values, perform a loop test and set the transmitter output to the alarm value (see Ta b le 2 - 4 , 2-5, and 2-6 on page 19, and “Verifying alarm level” on

page 24).

Note

Before returning transmitter to service, verify security switch is set to the correct position. Refer to

“Verify configuration” on page 11.

2.9.2 Performing an analog loop test

The analog loop test command verifies the output of the transmitter, the integrity of the loop, and the operations of any recorders or similar devices installed in the loop. It is recommended that the 4—20 mA (1—5 Vdc) points in addition to alarm levels when installing, repairing, or replacing a transmitter.

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The host system may provide a current measurement for the 4—20 mA (1—5 Vdc) HART output. If not, connect a reference meter to the transmitter by either connecting the meter to the test terminals on the terminal block, or shunting transmitter power through the meter at some point in the loop. For 1—5 V output, voltage measurement is directly measured from V

to (—) terminals.

out

Performing a analog loop test using a Field Communicator

From the HOME screen, enter the Fast Key sequence

Device Dashboard Fast Keys

3, 5, 1

Performing a analog loop test using AMS Device Manager

Right click on the device and, within the Methods dropdown menu, move cursor over Diagnostics and Te st . In the Diagnostics and Test dropdown menu select Loop Test.

1. Select Next after setting the control loop to manual.

2. Follow screen prompts to perform a loop test.

3. Select Finish to acknowledge the method is complete.

Performing analog loop test using a LOI

To perform an analog loop test using the LOI, the 4 mA (1 V), 20 mA (5 V), and custom mA point may be set manually. Reference Figure 2-17 for instructions on how to perform a transmitter loop test using an LOI.

Configuration

Reference Manual

LOOP TEST

SET 4MA SET 20MA SET CUSTOM END LOOP TEST BACK TO MENU EXIT MENU

VIEW CONFIG ZERO TRIM UNITS RERANGE

LOOP TEST

DISPLAY EXTENDED MENU EXIT MENU

00809-0100-4107, Rev CA

Figure 2-17. Performing an Analog Loop Test Using an LOI

2.9.3 Simulate device variables

It is possible to temporarily set the to a user-defined fixed value for testing purposes. Once the simulated variable method is left, the process variable will be automatically returned to a live measurement. Simulate device variables is only available in HART Revision 7 mode.

Simulate digital signal with a Field Communicator

Configuration

July 2017

From the HOME screen, enter the Fast Key sequence

Device Dashboard Fast Keys

Simulate digital signal with AMS Device Manager

Right click on the device and select Service Tools.

1. Select Simulate.

2. Under Device Variables select a digital value to simulate.

a. Pressure b. Sensor Temperature c. Scaled Variable

3. Follow the screen prompts to simulate selected digital value.

2.10 Configuring burst mode

Burst mode is compatible with the analog signal. Because the HART features simultaneous digital and analog data transmission, the analog value can drive other equipment in the loop while the control system is receiving the digital information. Burst mode applies only to the transmission of dynamic data (pressure and temperature in engineering units, pressure in percent of range, Scaled Variable, and/or analog output), and does not affect the way other transmitter data is accessed. However, when activated, bust mode can slow down communication of non-dynamic data to the host by 50 percent.

3, 5

Config uration

Access to information other than dynamic transmitter data is obtained through the normal poll/response method of HART Protocol communication. A Field Communicator, AMS Device Manager, or the control system may request any of the information that is normally available while the transmitter is in burst mode. Between each message sent by the transmitter, a short pause allows the Field Communicator, AMS Device Manager, or a control system to initiate a request.

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Choosing burst mode options in HART 5

Message content options:

 PV only  Percent of Range  PV, 2V, 3V, 4V  Process Variables  Device Status

Choosing burst mode options in HART 7

Message content options:

 PV only  Percent of Range  PV, 2V, 3V, 4V  Process Variables and Status  Process Variables  Device Status

Choosing a HART 7 Trigger Mode

When in HART 7 mode, the following trigger modes can be selected.

 Continuous (same as HART 5 burst mode)  Rising  Falling  Windowed  On Change

Note

Consult your host system manufacturer for burst mode requirements.

Configuring burst mode using a Field Communicator

From the HOME screen, enter the Fast Key sequence

Device Dashboard Fast Keys

Configuring burst mode using AMS Device Manager

Right click on the device and select Configure.

1. Select the HART tab.

2. Enter the configuration in burst mode configuration fields.

2, 2, 5, 3

2.11 Establishing multidrop communication

Multidropping transmitters refers to the connection of several transmitters to a single communications transmission line. Communication between the host and the transmitters takes place digitally with the analog output of the transmitters deactivated.

Configuration

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Multidrop installation requires consideration of the update rate necessary from each transmitter, the combination of transmitter models, and the length of the transmission line. Communication with transmitters can be accomplished with HART modems and a host implementing HART Protocol. Each transmitter is identified by a unique address and responds to the commands defined in the HART Protocol. Field Communicators and AMS Device Manager can test, configure, and format a multidropped transmitter the same way as a transmitter in a standard point-to-point installation.

Figure 2-18 shows a typical multidrop network. This figure is not intended as an installation diagram.

Note

A multidrop transmitter in HART Revision 7 mode has a fixed analog output of 4 mA for all but one device. Only one device is allowed to have an active analog signal.

Figure 2-18. Typical Multidrop Network (4—20 mA only)

Configuration

July 2017

A. HART modem B. Power supply

The Rosemount 2051 is set to address zero (0) at the factory, which allows operation in the standard point-to-point manner with a 4—20 mA output signal. To activate multidrop communication, the transmitter address must be changed to a number from 1 to 15 for HART Revision 5, or 1 to 63 for HART Revision 7. This change deactivates the 4—20 mA analog output, sending it to 4 mA. It also disables the failure mode alarm signal, which is controlled by the upscale/downscale switch position. Failure signals in multidropped transmitters are communicated through HART messages.

2.11.1 Changing a transmitter address

To activate multidrop communication, the transmitter poll address must be assigned a number from 1 to 15 for HART Revision 5, and 1 to 63 for HART Revision 7. Each transmitter in a multidropped loop must have a unique poll address.

Config uration

Changing transmitter address using a Field Communicator

From the HOME screen, enter the Fast Key sequence

Device Dashboard Fast Keys

HART Revision 5 HART Revision 7

2, 2, 5, 2, 1 2, 2, 5, 2, 2

Configuration

July 2017

00809-0100-4107, Rev CA

Changing transmitter address using AMS Device Manager

Right click on the device and select Configure.

1. In HART Revision 5 mode:

a. Select on Manual Setup, select the HART tab. b. In the Communication Settings box enter polling address in the Polling Address box, select

Send.

2. In HART Revision 7 mode:

a. Select on Manual Setup, select the HART tab and select the Change Polling Address button.

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

2.11.2 Communicating with a multidropped transmitter

To communicate with a multidrop transmitter, the Field Communicator or AMS Device Manager has to be set up for Polling.

Communicating with a multidropped transmitter using a Field Communicator

Reference Manual

1. Select Utility and Configure HART Application.

2. Select Polling Addresses.

3. Enter 0-63.

Communicating with a multidropped transmitter using AMS Device Manager

Select on the HART modem icon and select Scan All Devices.

Configuration

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00809-0100-4107, Rev CA

Section 3 Hardware Installation

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 29

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 29

Installation considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 29

Installation procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 30

Rosemount 305, 306, and 304 Manifolds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 39

Liquid level measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 45

3.1 Overview

The information in this section covers installation considerations for the Rosemount™ 2051 Pressure Transmitter with PROFIBUS

pipe-fitting, wiring procedures and basic configuration for initial installation.

PA. A Quick Start Guide is shipped with every transmitter to describe

Installation

July 2017

3.2 Safety messages

warning symbol ( ). Refer to the following safety messages before performing an operation preceded by this symbol.

Explosions could result in death or serious injury.

 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.

3.3 Installation considerations

Installation

Measurement accuracy depends upon proper installation of the transmitter and impulse piping. Mount the transmitter close to the process and use a minimum of piping to achieve best accuracy. Keep in mind the need for easy access, personnel safety, practical field calibration, and a suitable transmitter environment. Install the transmitter to minimize vibration, shock, and temperature fluctuation.

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July 2017

Important

Install the enclosed pipe plug (found in the box) in unused conduit opening. Engage a minimum of five threads to comply with explosion-proof requirements. See “Conduit entry threads” on page 31 for additional requirements.

For material compatibility considerations, see Material Selection Technical Note.

3.3.1 Mechanical considerations

Steam service

For steam service or for applications with process temperatures greater than the limits of the transmitter, do not blow down impulse piping through the transmitter. Flush lines with the blocking valves closed and refill lines with water before resuming measurement.

Side mounted

When the transmitter is mounted on its side, position the coplanar flange to ensure proper venting or draining. Mount the flange as shown in Figure 3-8 on page 36, keeping drain/vent connections on the bottom for gas service and on the top for liquid service.

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00809-0100-4107, Rev CA

3.3.2 Environmental considerations

Best practice is to mount the transmitter in an environment that has minimal ambient temperature change. The transmitter electronics temperature operating limits are —40 to 185 °F (—40 to 85 °C). Refer to Appendix A: Specifications and Reference Data that lists the sensing element operating limits. Mount the transmitter so that it is not susceptible to vibration and mechanical shock and does not have external contact with corrosive materials.

3.4 Installation procedures

3.4.1 Mount the transmitter

For dimensional drawing information refer to “Dimensional drawings” on page 102.

Process flange orientation

Mount the process flanges with sufficient clearance for process connections. For safety reasons, place the drain/vent valves so the process fluid is directed away from possible human contact when the vents are used. In addition, consider the need for a testing or calibration input.

Housing rotation

To improve field access to wiring or to better view the optional LCD display:

1. Loosen the housing rotation set screw using a

2. Turn the housing left or right maximum up to 180° from its original position Over rotating can damage the transmitter.

/64-in. hex wrench.

(1)

3. Re-tighten the housing rotation set screw to no more than 7 in-lb when desired location is reached.

1, The Rosemount 2051C original position aligns with “H” side; Rosemount 2051T original position is the opposite side of bracket holes.

Installation

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00809-0100-4107, Rev CA

Figure 3-1. Housing Rotation

A. Housing rotation set screw (5/64-in.)

Terminal side of electronics housing

Mount the transmitter so the terminal side is accessible. Clearance of 0.75-in. (19 mm) is required for cover removal. Use a conduit plug in the unused conduit opening.

Circuit side of electronics housing

Provide 0.75-in. (19 mm) of clearance for units with out an LCD display. If LCD display is installed, mount for clear visibility. Three inches of clearance is required for LCD display cover removal.

Installation

July 2017

Conduit entry threads

For NEMA® 4X, IP66, and IP68 requirements, use thread seal (PTFE) tape or paste on male threads to provide a watertight seal.

Environmental seal for housing

Thread sealing (PTFE) tape or paste on male threads of conduit is required to provide a water/dust tight conduit seal and meets requirements of NEMA Type 4X, IP66, and IP68. Consult factory if other ingress protection ratings are required.

For M20 threads, install conduit plugs to full thread engagement or until mechanical resistance is met.

Always ensure a proper seal by installing electronics housing cover(s) so that metal contacts metal. Use Rosemount O-rings.

Mounting brackets

Rosemount 2051 may be panel-mounted or pipe-mounted through an optional mounting bracket. Refer to Ta b le 3 - 1 for the complete offering and see Figure 3-2 through Figure 3-6 on pages 32 and 34 for dimensions and mounting configurations.

Table 3-1. Mounting Brackets

Rosemount 2051 Brackets

Process connections Mounting Materials

Option

code

Coplanar In-line Tra di tio na l Pipe Panel

Flat

panel

Carbon

steel

bracket

Stainless

steel

bracket

Carbon

steel

bolts

Stainless

steel bolts

B4 X X N/A X X X N/A X N/A X

B1 N/A N/A X X N/A N/A X N/A X N/A

B2 N/A N/A X N/A X N/A X N/A X N/A

Installation

3.4 (85)

2.8 (71)

July 2017

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00809-0100-4107, Rev CA

Table 3-1. Mounting Brackets

Rosemount 2051 Brackets

Process connections Mounting Materials

Option

code

Coplanar In-line Tra di tio na l Pipe Panel

Flat

panel

B3 N/A N/A X N/A N/A X X N/A X N/A

B7 N/A N/A X X N/A N/A X N/A N/A X

B8 N/A N/A X N/A X N/A X N/A N/A X

B9 N/A N/A X N/A N/A X X N/A N/A X

BA N/A N/A X X N/A N/A N/A X N/A X

BC N/A N/A X N/A N/A X N/A X N/A X

Figure 3-2. Mounting Bracket Option Code B4

Carbon

steel

bracket

Stainless

steel

bracket

Carbon

steel

bolts

Stainless

steel bolts

A. 3/8—16 x 11/4-in. bolts for mounting to transmitter

/16 x 11/2-in. bolts for panel mounting (not supplied)

B. Dimensions are in inches (millimeters).

Figure 3-3. Mounting Bracket Option Codes B1, B7, and BA

3.75 (95)

Dimensions are in inches (millimeters).

1.65 (42)

2.62 (67)

2.81 (71)

3.87 (98)

4.97 (127)

Installation

Reference Manual

3.75 (95) 1.65 (42)

3.87 (98)

2.81 (71)

4.5

(114)

1.40 (36)

00809-0100-4107, Rev CA

Figure 3-4. Panel Mounting Bracket Option Codes B2 and B8

A. Mounting holes 0.375 diameter (10) Dimensions are in inches (millimeters).

Figure 3-5. Flat Mounting Bracket Option Codes B3 and BC

1.62 (41)

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July 2017

2.125 (54)

8 (203)

2.81 (71)

Installation

Dimensions are in inches (millimeters).

Flange bolts

The Rosemount 2051 can be shipped with a coplanar flange or a traditional flange installed with four

1.75-inch flange bolts. Mounting bolts and bolting configurations for the coplanar and traditional flanges can be found on page 34. Stainless steel bolts supplied by Emerson to ease installation. Carbon steel bolts do not require lubrication. No additional lubricant should be applied when installing either type of bolt. Bolts supplied by Emerson are identified by their head markings:

B7M

316 B8M F593_

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

Carbon Steel (CS) Head Markings

(1)

Stainless Steel (SST) Head Markings

™

are coated with a lubricant

Installation

1.75 (44) × 4

1.50 (38) × 4 1.50 (38) × 2

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Reference Manual

00809-0100-4107, Rev CA

Bolt installation

Only use bolts supplied with the Rosemount 2051 or sold by Emerson as spare parts for the Rosemount 2051 Transmitter. Use the following bolt installation procedure:

1. Finger-tighten the bolts.

2. Torque the bolts to the initial torque value using a crossing pattern (see Ta bl e 3 - 2 for torque values).

3. Torque the bolts to the final torque value using the same crossing pattern.

Table 3-2. Bolt Installation Torque Values

Bolt material Initial torque value Final torque value

Carbon steel -ASTM-A445 standard

316 stainless steel–option L4

ASTM-A-193-B7M–option L5

Alloy 400–option L6

300 in-lb (34 N-m) 650 in-lb (73 N-m)

150 in-lb (17 N-m) 300 in-lb (34 N-m)

300 in-lb (34 N-m) 650 in-lb (73 N-m)

Figure 3-6. Traditional Flange Bolt Configurations

Differential transmitter Gage/Absolute transmitter

A. Drain/vent B. Plug Dimensions are in inches (millimeters).

Installation

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00809-0100-4107, Rev CA

Figure 3-7. Mounting Bolts and Bolt Configurations for Coplanar Flange

Transmitter with

Dimensions are in inches (millimeters).

flange bolts

1.75 (44) × 4

Installation

July 2017

Transmitter with

flange adapters and

flange/adapter bolts

2.88 (73) × 4

Description Size in. (mm)

Flange bolts

Flange/adapter bolts

Manifold/flange bolts

Note

Rosemount 2051T Transmitters are direct mount and do not require bolts for process connection.

3.4.2 Impulse piping

Mounting requirements

Impulse piping configurations depend on specific measurement conditions. Refer to Figure 3-8 for examples of the following mounting configurations:

Liquid flow measurement

1. Place taps to the side of the line to prevent sediment deposits on the transmitter’s process isolators.

2. Mount the transmitter beside or below the taps so gases can vent into the process line.

3. Mount drain/vent valve upward to allow gases to vent.

Gas flow measurement

1. Place taps in the top or side of the line.

1.75 (44)

2.88 (73)

2.25 (57)

Installation

2. Mount the transmitter beside or above the taps so liquid will drain into the process line.

Installation

Flow

July 2017

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00809-0100-4107, Rev CA

Steam flow measurement

1. Place taps to the side of the line.

2. Mount the transmitter below the taps to ensure that the impulse piping will stay filled with condensate.

3. In steam service above 250 °F (121 °C), fill impulse lines with water to prevent steam from contacting the transmitter directly and to ensure accurate measurement start-up.

Note

For steam or other elevated temperature services, it is important that temperatures at the process connection do not exceed the transmitter’s process temperature limits.

Figure 3-8. Installation Examples

Liquid service Gas service Steam service

Flow

Best practices

The piping between the process and the transmitter must accurately transfer the pressure to obtain accurate measurements. There are five possible sources of error: pressure transfer, leaks, friction loss (particularly if purging is used), trapped gas in a liquid line, liquid in a gas line, and density variations between the legs.

The best location for the transmitter in relation to the process pipe is dependent on the process. Use the following guidelines to determine transmitter location and placement of impulse piping:

 Keep impulse piping as short as possible.  For liquid service, slope the impulse piping at least 1-in/ft (8 cm/m) upward from the transmitter

toward the process connection.

 For gas service, slope the impulse piping at least 1-in/ft (8 cm/m) downward from the transmitter

toward the process connection.

 Avoid high points in liquid lines and low points in gas lines.  Make sure both impulse legs are the same temperature.  Use impulse piping large enough to avoid friction effects and blockage.  Vent all gas from liquid piping legs.  When using a sealing fluid, fill both piping legs to the same level.  When purging, make the purge connection close to the process taps and purge through equal lengths

of the same size pipe. Avoid purging through the transmitter.

 Keep corrosive or hot (above 250 °F [121 °C]) process material out of direct contact with the sensor

module and flanges.

Installation

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00809-0100-4107, Rev CA

 Prevent sediment deposits in the impulse piping.  Maintain equal leg of head pressure on both legs of the impulse piping.  Avoid conditions that might allow process fluid to freeze within the process flange.

3.4.3 Process connections

Coplanar or traditional process connection

Install and tighten all four flange bolts before applying pressure, or process leakage will result. When properly installed, the flange bolts will protrude through the top of the sensor module housing. Do not attempt to loosen or remove the flange bolts while the transmitter is in service.

Flange adapters

Installation

July 2017

Rosemount 2051DP and GP process connections on the transmitter flanges are 1/4—18 NPT. Flange adapters are available with standard

/2—14 NPT Class 2 connections. The flange adapters allow users to disconnect from the process by removing the flange adapter bolts. Use plant-approved lubricant or sealant when making the process connections. Refer to “Dimensional drawings” on page 102 for the distance between pressure connections. This distance may be varied ±

/8-in. (3.2 mm) by rotating one or

both of the flange adapters.

To install adapters to a coplanar flange, perform the following procedure:

1. Remove the flange bolts.

2. Leaving the flange in place, move the adapters into position with the O-ring installed.

3. Clamp the adapters and the coplanar flange to the transmitter sensor module using the larger of the

bolts supplied.

4. Tighten the bolts. Refer to “Flange bolts” on page 33 for torque specifications.

Whenever you remove flanges or adapters, visually inspect the PTFE O-rings. Replace with O-ring designed for Rosemount transmitter if there are any signs of damage, such as nicks or cuts. Undamaged O-rings may be reused. If you replace the O-rings, retorque the flange bolts after installation to compensate for cold flow. Refer to the process sensor body reassembly procedure in Section 6: Trouble-

shooting.

When compressed, PTFE O-rings tend to “cold flow,” which aids in their sealing capabilities.

Note

PTFE O-rings should be replaced if the flange adapter is removed.

Installation

Rosemount 3051S/3051/2051

Rosemount 1151

C D

July 2017

Reference Manual

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O-rings

The two styles of Rosemount flange adapters (Rosemount 1151 and Rosemount 3051S/3051/2051) each require a unique O-ring. Use only the O-ring designed for the corresponding flange adapter.

Failure to install proper flange adapter O-rings may cause process leaks, which can result in death or serious injury. The two flange adapters are distinguished by unique O-ring grooves. Only use the O-ring designed for its specific flange adapter, as shown below:

A. Flange adapter B. O-ring C. PTFE-based profile (square) D. Elastomer profile (round)

3.4.4 In-line process connection

In-line gage transmitter orientation

The low side pressure port on the in-line gage transmitter is located in the neck of the transmitter, behind the housing. The vent path is 360 degrees around the transmitter between the housing and sensor (See Figure 3-9).

Keep the vent path free of any obstruction, such as paint, dust, and lubrication by mounting the transmitter so that the process can drain away.

Figure 3-9. In-line Gage Low Side Pressure Port

A. Low side pressure port (atmospheric reference)

Installation

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3.5 Rosemount 305, 306, and 304 Manifolds

The Rosemount 305 Integral Manifold is available in two designs: traditional and coplanar. The traditional Rosemount 305 Integral Manifold can be mounted to most primary elements with mounting adapters in the market today. The Rosemount 306 Integral Manifold is used with the Rosemount 2051T In-line Transmitters to provide block-and-bleed valve capabilities of up to 10000 psi (690 bar).

Figure 3-10. Manifolds

Rosemount 2051C and

Rosemount 304 Conventional

Rosemount 2051C and

Rosemount 305 Integral Coplanar

Installation

July 2017

Rosemount 2051C and

Rosemount 305 Integral Traditional

Rosemount 2051T and Rosemount 306 In-line

3.5.1 Rosemount 305 Integral Manifold installation procedure

To install a Rosemount 305 Integral Manifold to a Rosemount 2051 Transmitter:

1. Inspect the PTFE sensor module O-rings. Undamaged O-rings may be reused. If the O-rings are

damaged (if they have nicks or cuts, for example), replace with O-rings designed for Rosemount transmitter.

Important

If replacing the O-rings, take care not to scratch or deface the O-ring grooves or the surface of the isolating diaphragm while you remove the damaged O-rings.

Installation

2. Install the Integral Manifold on the sensor module. Use the four 2

Finger tighten the bolts, then tighten the bolts incrementally in a cross pattern to final torque value. See “Flange bolts” on page 33 for complete bolt installation information and torque values. When fully tightened, the bolts should extend through the top of the sensor module housing.

/4-in. manifold bolts for alignment.

Installation

July 2017

3. If the PTFE sensor module O-rings have been replaced, the flange bolts should be re-tightened after

installation to compensate for cold flow of the O-rings.

Note

Always perform a zero trim on the transmitter/manifold assembly after installation to eliminate mounting effects.

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3.5.2 Rosemount 306 Integral Manifold installation procedure

The Rosemount 306 Manifold is for use only with a Rosemount 2051T In-line Transmitter.

Assemble the Rosemount 306 Manifold to the Rosemount 2051T In-line Transmitter with a thread sealant.

3.5.3 Rosemount 304 Conventional Manifold installation procedure

To install a Rosemount 304 Conventional Manifold to a Rosemount 2051 Transmitter:

1. Align the conventional manifold with the transmitter flange. Use the four manifold bolts fo

align

ment.

2. Finger tighten the bolts, then tighten the bolts incrementally in a cross pattern to final torque value.

See “Flange bolts” on page 33 for complete bolt installation information and torque values. When fully tightened, the bolts should extend through the top of the sensor module housing.

3. Leak-check assembly to maximum pressure range of transmitter.

3.5.4 Manifold operation

Improper installation or operation of manifolds may result in process leaks, which may cause death or serious injury.

Always perform a zero trim on the transmitter/manifold assembly after installation to eliminate any shift due to mounting effects. See “Sensor trim overview” on page 66.

Coplanar transmitters

3-valve and 5-valve manifolds

Performing zero trim at static line pressure

In normal operation the two isolate (block) valves between the process ports and transmitter will be open and the equalize valve will be closed.

Drain/Vent

valve

Isolate (open)

Drain/Vent

Equalize

(closed)

valve

Isolate (open)

Process

Installation

Reference Manual

Drain/Vent

valve

Isolate (open)

Drain/Vent

valve

Isolate

(closed)

Process

Equalize

(open)

Drain/Vent

valve

Isolate (open)

Drain/Vent

valve

Isolate

(closed)

Process

Equalize

(closed)

00809-0100-4107, Rev CA

Installation

July 2017

1. To zero trim the transmitter, close the

isolate valve on the low side (downstream) side of the transmitter.

2. Open the equalize valve to equalize the

pressure on both sides of the transmitter. The manifold is now in the proper configuration for performing a zero trim on the transmitter.

3. After performing a zero trim on the

transmitter, close the equalize valve.

Drain/Vent

valve

Isolate (open)

Drain/Vent

Equalize (closed)

Process

valve

Isolate

(closed)

4. Finally, to return the transmitter to

service, open the low side isolate valve.

Installation

Drain/Vent

valve

Isolate

(open)

Drain/Vent

Equalize (closed)

Process

valve

Isolate (open)

Installation

(Plugged)

Isolate (open)

Isolate

(open)

(Plugged)

Equalize (closed)

Process ProcessDrain vent

(closed)

(Plugged)

Isolate (open)

Isolate

(closed)

(Plugged)

Process ProcessDrain vent

(closed)

Equalize (closed)

(Plugged)

Isolate (open)

Equalize

(open)

Equalize (closed)

Process ProcessDrain vent

(closed)

Isolate

(closed)

(Plugged)

Isolate (open)

Equalize

(open)

Equalize

(open)

Process ProcessDrain vent

(closed)

Isolate

(closed)

(Plugged)

July 2017

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5-valve natural gas manifold

Performing zero trim at static line pressure

5-valve natural gas configurations shown:

In normal operation, the two isolate (block) valves between the process ports and transmitter will be open, and the equalize valves will be closed. Vent valves may be opened or closed.

1. To zero trim the transmitter, first close the

isolate valve on the low pressure (downstream) side of the transmitter and the vent valve.

2. Open the equalize valve on the high

pressure (upstream) side of the transmitter.

3. Open the equalize valve on the low

pressure (downstream) side of the transmitter. The manifold is now in the proper configuration for performing a zero trim on the transmitter.

Installation

Reference Manual

(Plugged)

Isolate (open)

Equalize

(open)

Equalize (closed)

Process ProcessDrain vent

(closed)

Isolate

(closed)

(Plugged)

Isolate (open)

Isolate

(closed)

(Plugged)

Process ProcessDrain vent

(closed)

Equalize

(closed)

Equalize (closed)

(Plugged)

Isolate (open)

(Plugged)

Equalize (closed)

Process ProcessDrain vent

(closed)

00809-0100-4107, Rev CA

4. After performing a zero trim on the

transmitter, close the equalize valve on the low pressure (downstream) side of the transmitter.

5. Close the equalize valve on the high

pressure (upstream) side.

Installation

July 2017

6. Finally, to return the transmitter to

service, open the low side isolate valve and vent valve. The vent valve can remain open or closed during operation.

In-line transmitters

2-valve and block and bleed style manifolds

Isolating the transmitter

In normal operation the isolate (block) valve between the process port and transmitter will be open and the test/vent valve will be closed. On a block and bleed style manifold, a single block valve provides transmitter isolation and a bleed screw provides drain/vent capabilities.

Transmitter

Vent

(closed)

Isolate

Installation

Process

(open)

Installation

Transmitter

Isolate

Vent

(open)

Process (closed)

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1. To isolate the transmitter, close the isolate valve.

2. To bring the transmitter to atmospheric pressure,

open the vent valve or bleed screw.

Note

/4-in. male NPT pipe plug may be installed in the test/vent port and will need to be removed with a wrench in order to vent the manifold properly.

Always use caution when venting directly to atmosphere.

3. After venting to atmosphere, perform any required

calibration and then close the test/vent valve or replace the bleed screw.

Transmitter

Vent

(closed)

Isolate

Process (closed)

Transmitter

Vent

(closed)

4. Open the Isolate (block) valve to return the

transmitter to service.

Isolate

Process (closed)

Transmitter

Vent

(closed)

Isolate

Process

(open)

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Adjusting valve packing

Over time, the packing material inside a Rosemount manifold may require adjustment in order to continue to provide proper pressure retention. Not all Rosemount manifolds have this adjustment capability. The Rosemount manifold model number will indicate what type of stem seal or packing material has been used.

The following steps are provided as a procedure to adjust valve packing:

1. Remove all pressure from device.

2. Loosen manifold valve jam nut.

3. Tighten manifold valve packing adjuster nut

4. Tighten manifold valve jam nut.

5. Re-apply pressure and check for leaks.

6. Above steps can be repeated, if necessary.

If the above procedure does not result in proper pressure retention, the complete manifold should be replaced.

/4 turn.

Installation

July 2017

Figure 3-11. Valve Components

A. Bonnet B. Ball seat C. Packing D. Stem

E. Packing adjuster F. J am nut G. Packing follower

3.6 Liquid level measurement

Differential pressure transmitters used for liquid level applications measure hydrostatic pressure head. Liquid level and specific gravity of a liquid are factors in determining pressure head. This pressure is equal to the liquid height above the tap multiplied by the specific gravity of the liquid. Pressure head is independent of volume or vessel shape.

Installation

Zero

Suppression

Range

540

900

inH2O

July 2017

3.6.1 Open vessels

A pressure transmitter mounted near a tank bottom measures the pressure of the liquid above.

Make a connection to the high pressure side of the transmitter, and vent the low pressure side to the atmosphere. Pressure head equals the liquid’s specific gravity multiplied by the liquid height above the tap.

Zero range suppression is required if the transmitter lies below the zero point of the desired level range.

Figure 3-12 shows a liquid level measurement example.

3.6.2 Closed vessels

Pressure above a liquid affects the pressure measured at the bottom of a closed vessel. The liquid specific gravity multiplied by the liquid height plus the vessel pressure equals the pressure at the bottom of the vessel.

To measure true level, the vessel pressure must be subtracted from the vessel bottom pressure. To do this, make a pressure tap at the top of the vessel and connect this to the low side of the transmitter. Vessel pressure is then equally applied to both the high and low sides of the transmitter. The resulting differential pressure is proportional to liquid height multiplied by the liquid specific gravity.

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Dry leg condition

Low-side transmitter piping will remain empty if gas above the liquid does not condense. This is a dry leg condition. Range determination calculations are the same as those described for bottom-mounted transmitters in open vessels, as shown in Figure 3-12.

Figure 3-12. Liquid Level Measurement Example

Let X equal the vertical distance between the minimum and maximum measurable levels (500-in.). Let Y equal the vertical distance between the transmitter datum line and the minimum measurable level (100-in.). Let SG equal the specific gravity of the fluid (0.9). Let h equal the maximum head pressure to be measured in inches of water. Let e equal head pressure produced by Y expressed in inches of water. Let Range equal e to e + h. Then h = (X)(SG)

= 500 x 0.9 = 450 inH

e = (Y)(SG)

=100 x 0.9 = 90 inH

Range = 90 to 540 inH

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H L

Zero elevation

Range

—110—610

inH2O

00809-0100-4107, Rev CA

Wet leg condition

Condensation of the gas above the liquid slowly causes the low side of the transmitter piping to fill with liquid. The pipe is purposely filled with a convenient reference fluid to eliminate this potential error. This is a wet leg condition.

The reference fluid will exert a head pressure on the low side of the transmitter. Zero elevation of the range must then be made. See Figure 3-13.

Figure 3-13. Wet Leg Example

Let X equal the vertical distance between the minimum and maximum measurable levels (500-in.). Let Y equal the vertical distance between the transmitter datum line and the minimum measurable level (50-in.). Let z equal the vertical distance between the top of the liquid in the wet leg and the transmitter datum line (600-in.). Let SG

Let SG

Let h equal the maximum head pressure to be measured in inches of water. Let e equal the head pressure produced by Y expressed in inches of water. Let s equal head pressure produced by z expressed in inches of water. Let Range equal e — s to h + e — s. Then h = (X)(SG

= 500 x 1.0 = 500 in H

e = (Y)(SG

= 50 x 1.0 = 50 inH

s = (z)(SG

= 600 x 1.1 = 660 inH

Range = e — s to h + e — s.

= 50 — 660 to 500 + 50 — 660 = —610 to —110 inH

equal the specific gravity of the fluid (1.0). equal the specific gravity of the fluid in the wet leg (1.1).

)

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Installation

Air

Range

inH2O

0 110

July 2017

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00809-0100-4107, Rev CA

Bubbler system in open vessel

A bubbler system that has a top-mounted pressure transmitter can be used in open vessels. This system consists of an air supply, pressure regulator, constant flow meter, pressure transmitter, and a tube that extends down into the vessel.

Bubble air through the tube at a constant flow rate. The pressure required to maintain flow equals the liquid’s specific gravity multiplied by the vertical height of the liquid above the tube opening. Figure 3-14 shows a bubbler liquid level measurement example.

Figure 3-14. Bubbler Liquid Level Measurement Example

Let X equal the vertical distance between the minimum and maximum measurable levels (100-in.). Let SG equal the specific gravity of the fluid (1.1). Let h equal the maximum head pressure to be measured in inches of water. Let Range equal zero to h. Then h = (X)(SG)

= 100 x 1.1 = 110 inH

Range = 0 to 110 inH

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Section 4 Electrical Installation

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 49

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 49

Local Operating Interface (LOI)/LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 49

Configure security and simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 50

Setting transmitter alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 53

Electrical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 54

4.1 Overview

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The information in this section covers installation considerations for the Rosemount™ 2051 Pressure Transmitter with HART pipe-fitting, wiring procedures and basic configuration for initial installation.

Protocol. A Quick Start Guide is shipped with every transmitter to describe

4.2 Safety messages

warning symbol ( ). Refer to the following safety messages before performing an operation preceded by this symbol.

Explosions could result in death or serious injury.

 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.

4.3 Local Operating Interface (LOI)/LCD display

Transmitters ordered with the LCD display option (M5) or LOI option (M4) are shipped with the display installed. Installing the display on an existing transmitter requires a small instrument screwdriver. Carefully align the desired display connector with the electronics board connector. If connectors don't align, the display and electronics board are not compatible.

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Figure 4-1. LCD Display

A. Jumpers (top and bottom) B. LCD display C. Extended cover

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4.3.1 Rotating LOI/LCD display

1. Secure the loop to manual control and remove power to transmitter.

2. Remove transmitter housing cover.

3. Remove screws form the LCD/LOI display and rotate to desired orientation.

a. Insert 10 pin connector into the display board for the correct orientation. Carefully align pins for

insertion into the output board.

4. Re-insert screws.

5. Re-attach transmitter housing cover; cover must be fully engaged to comply with explosion proof

requirements.

6. Re-attach power and return loop to automatic control.

4.4 Configure security and simulation

There are four security methods with the Rosemount 2051 Transmitter.

 Security switch  HART Lock  Configuration buttons lock  LOI password

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Figure 4-2. 4—20 mA Electronics Board

A. Alarm B. Security

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without LCD meter with LCD display

Note

1-5 Vdc Alarm and Security switches are located in the same location as 4-20 mA output boards.

4.4.1 Security switch

The security switch is used to prevent changes to the transmitter configuration data. If the security switch is set to the locked location ( ), any transmitter configuration requests sent via HART, LOI, or local configuration buttons will be rejected by the transmitter and the transmitter configuration data will not be modified. See figure above for the location of the security switch. Follow the steps below to enable the security switch.

1. Set loop to manual and remove power.

2. Remove transmitter housing cover.

3. Use a small screwdriver to slide the switch to the lock ( ) position.

4. Replace transmitter housing cover; cover must be fully engaged to comply with explosion proof

requirements.

4.4.2 HART Lock

The HART Lock prevents changes to the transmitter configuration from all sources; all changes requested via HART, LOI, and local configuration buttons will be rejected. The HART Lock can only be set via HART communication, and is only available in HART Revision 7 mode. The HART Lock can be enabled or disabled with a Field Communicator or AMS Device Manager.

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Configuring HART Lock using Field Communicator

From the HOME screen, enter the fast key sequence

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Device Dashboard Fast Keys

Configuring HART Lock using AMS device Manager

1. Right click on the device and select Configure.

2. Under Manual Setup select the Security tab.

3. Select Lock/Unlock button under HART Lock (Software) and follow the screen prompts.

4.4.3 Configuration button lock

The configuration button lock disables all local button functionality. Changes to the transmitter configuration from the LOI and local buttons will be rejected. Local external keys can be locked via HART communication only.

Configuring configuration button lock using a Field Communicator

From the HOME screen, enter the fast key sequence

Device Dashboard Fast Keys

Configuring configuration button lock using AMS device Manager

1. Right click on the device and select Configure.

2, 2, 6, 4

2, 2, 6, 3

2. Under Manual Setup select the Security tab.

3. Within the Configuration Buttons dropdown menu select Disabled to lock external local keys.

4. Select Send.

5. Confirm service reason and select Yes .

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EXTENDED MENU

CALIBRAT DAMPING

TRANSFER FUNCT SCALED VARIAB ASSIGN P TAG ALARM SAT VALUES

PASSWORD

SIMULATE HART REV BACK TO MENU EXIT MENU

PASSWORD

PASSWORD ENABLE CHANGE PASSWORD BACK TO MENU EXIT MENU

VIEW CONFIG ZERO TRIM UNITS RERANGE LOOP TEST DISPLAY

EXTENDED MENU

EXIT MENU

00809-0100-4107, Rev CA

4.4.4 LOI password

A Local Operator Interface Password can be entered and enabled to prevent review and modification of device configuration via the LOI. This does not prevent configuration from HART or external keys (analog zero and span; Digital Zero Trim). The LOI password is a 4 digit code that is to be set by the user. If the password is lost or forgotten the master password is “9307”.

The LOI password can be configured and enabled/disabled by HART Communication via a Field Communicator, AMS Device Manager, or the LOI.

Configuring LOI password with Field Communicator

From the HOME screen, enter the Fast Key sequence

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Device Dashboard Fast Keys

2, 2, 6, 5, 2

Configuring LOI password with AMS Device Manager

1. Right click on the device and select Configure.

2. Under Manual Setup select the Security tab.

3. Within the Local Operator Interface select the Configure Password button and follow the screen

prompts.

Configuring LOI password using LOI

Figure 4-3. Local Operator Interface password

4.5 Setting transmitter alarm

Electrical Installation

On the electronics board is an alarm switch, reference Figure 4-2 on page 51 for switch location. Follow the steps below to change the alarm switch location:

1. Set loop to manual and remove power.

2. Remove transmitter housing cover.

3. Use a small screwdriver to slide switch to desired position.

4. Replace transmitter cover; cover must be fully engaged to comply with explosion proof requirements.

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4.6 Electrical considerations

Note

Make sure all electrical installation is in accordance with national and local code requirements.

Do not run signal wiring in conduit or open trays with power wiring or near heavy electrical equipment.

4.6.1 Conduit installation

Recommended conduit connections are shown in Figure 4-4.

If all connections are not sealed, excess moisture accumulation can damage the transmitter. Make sure to mount the transmitter with the electrical housing positioned downward for drainage. To avoid moisture accumulation in the housing, install wiring with a drip loop, and ensure the bottom of the drip loop is mounted lower than the conduit connections or the transmitter housing.

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Figure 4-4. Conduit Installation

Correct Correct Incorrect

A. Possible conduit line positions B. Sealing compound

4.6.2 Power supply

4—20 mA HART (option code A)

Transmitter operates on 10.5—42.4 Vdc at the terminal of the transmitter. The DC power supply should provide power with less than two percent ripple. A minimum of 16.6 V is required for loops with a 250  resistance.

Note

A minimum loop resistance of 250  is required to communicate with a Field Communicator. If a single power supply is used to power more than one Rosemount 2051 Transmitter, the power supply used, and circuitry common to the transmitters, should not have more that 20  of impedance at 1200 Hz.

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10.52030

1387

1000

500

Operating

region

Load (Ωs)

00809-0100-4107, Rev CA

Figure 4-5. Load Limitation

The Field Communicator requires a minimum loop resistance of 250  for communication.

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Maximum loop resistance = 43.5 x (power supply voltage — 10.5)

The total resistance load is the sum of the resistance of the signal leads and the load resistance of the controller, indicator, I.S. Barriers, and related pieces. If intrinsic safety barriers are used, the resistance and voltage drop must be included.

1—5 Vdc low power HART (output code M)

Low power transmitters operate on 9—28 Vdc. The DC power supply should provide power with less than 2 percent ripple. The V

load should be 100 k or greater.

out

4.6.3 Wiring the transmitter

Do not connect the power signal wiring to the test terminals. Incorrect wiring can damage test circuit.

Note

Use shielded twisted pairs to yield best results. To ensure proper communication, use 24 AWG or larger wire and do not exceed 5000 ft. (1500 m). For 1—5 V 500 ft. (150 m) maximum are recommended. unpaired three conductor or two twisted pairs is recommended.

Voltage (Vdc)

42.4

Electrical Installation

Figure 4-6. Wiring the Transmitter (4—20 mA HART)

A. DC power supply

 250 (necessary for HART Communication only)

B. R

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July 2017

Figure 4-7. Wiring the Transmitter (1—5 Vdc Low Power)

A. DC power supply B. Voltmeter

Perform the following procedure to make wiring connections:

1. Remove the housing cover on terminal compartment side. Do not remove the cover in explosive

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00809-0100-4107, Rev CA

atmospheres when the circuit is live. Signal wiring supplies all power to the transmitter.

2. For 4—20 mA HART Output, connect the positive lead to the terminal marked (pwr/comm+) and

the negative lead to the terminal marked (pwr/comm—). Do not connect the powered signal wiring to the test terminals. Power could damage the test diode.

a. For 1—5 Vdc HART Output, connect the positive lead to (PWR +) and the negative to the

(PWR—). Do not connect the powered signal wiring to the test terminals. Power could damage the test diode.

3. Plug and seal unused conduit connection on the transmitter housing to avoid moisture

accumulation in the terminal side.

4.6.4 Grounding the transmitter

Signal cable shield grounding

Signal cable shield grounding is summarized in Figure 4-8 on page 57. The signal cable shield and unused shield drain wire must be trimmed and insulated, ensuring that the signal cable shield and drain wire do not come in contact with the transmitter case. See “Transmitter case grounding” on page 57 for instructions on grounding the transmitter case. Follow the steps below to correctly ground the signal cable shield.

1. Remove the field terminals housing cover.

2. Connect the signal wire pair at the field terminals as indicated in Figure 4-6.

3. At the field terminals, the cable shield and shield drain wire should be trimmed close and

insulated from transmitter housing.

4. Reattach the field terminals housing cover; cover must be fully engaged to comply with

explosion proof requirements.

5. At terminations outside the transmitter housing, the cable shield drain wire should be

continuously connected.

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a. Prior to the termination point, any exposed shield drain wire should be insulated as shown in

6. Properly terminate the signal cable shield drain wire to an earth ground at or near the power

Figure 4-8. Wiring Pair and Ground

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July 2017

Figure 4-8 (B).

supply.

A. Insulate Shield and shield drain wire B. Insulate exposed shield drain wire C. Terminate cable shield drain wire to earth ground

Transmitter case grounding

Always ground the transmitter case in accordance with national and local electrical codes. The most effective transmitter case grounding method is a direct connection to earth ground with minimal impedance. Methods for grounding the transmitter case include:

 Internal ground connection: The internal ground connection screw is inside the FIELD

TERMINALS side of the electronics housing. This screw is identified by a ground symbol ( ). The ground connection screw is standard on all Rosemount 2051 Transmitters. Refer to Figure

4-9 on page 58.

 External ground connection: The external ground connection is located on the exterior of the

transmitter housing. Refer to Figure 4-10 on page 58. This connection is only available with option V5 and T1.

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Figure 4-9. Internal Ground Connection

A. Internal ground location

Figure 4-10. External Ground Connection (Option V5 or T1)

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A. External ground location

Note

Grounding the transmitter case via threaded conduit connection may not provide sufficient ground continuity.

Transient protection terminal block grounding

The transmitter can withstand electrical transients of the energy level usually encountered in static discharges or induced switching transients. However, high-energy transients, such as those induced in wiring from nearby lightning strikes, can damage the transmitter.

The transient protection terminal block can be ordered as an installed option (code T1) or as a spare part to retrofit existing Rosemount 2051 Transmitters in the field. See “Spare parts” on page 145 for part numbers. The lightning bolt symbol shown in Figure 4-11 on page 59 identifies the transient protection terminal block.

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Figure 4-11. Transient Protection Terminal Block

A. Lightning bolt location

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Note

The transient protection terminal block does not provide transient protection unless the transmitter case is properly grounded. Use the guidelines to ground the transmitter case. Refer to Figure 4-11.

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Operation and Maintenance

Section 5 Operation and Maintenance

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 61

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 61

Recommended calibration tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 62

Calibration overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 62

Trim the pressure signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 66

Trim the analog output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 69

Switching HART Revision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 72

5.1 Overview

This section contains information on calibrating Rosemount™ 2051 Pressure Transmitters.

Field Communicator, AMS perform configuration functions.

™

, Device Manager and Local Operator Interface (LOI) instructions are given to

July 2017

5.2 Safety messages

warning symbol ( ). Refer to the following safety messages before performing an operation preceded by this symbol.

Explosions could result in death or serious injury.

 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.

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5.3 Recommended calibration tasks

Absolute pressure transmitters (Rosemount 2051CA and 2051TA) are calibrated at the factory. Trimming adjusts the position of the factory characterization curve. It is possible to degrade performance of the transmitter if any trim is done improperly or with inaccurate equipment.

Table 5-1. Basic and Full Calibration Tasks

Field installation tasks Bench calibration tasks

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1. Perform sensor zero/lower trim: Compensate for mounting pressure effects.

a. Refer to Rosemount 305, 306, and 304 Manifolds for

operation instructions to properly drain/vent valves

2. Set/check basic configuration parameters.

a. Output units

b. Range points

c. Output type

d. Damping Value

Note

For Rosemount 2051CA, 2051TA range 0 and range 5 devices, an accurate absolute pressure source is required.

5.4 Calibration overview

The Rosemount 2051 Transmitter is an accurate instrument that is fully calibrated in the factory. Field calibration is provided to the user to meet plant requirements or industry standards. Complete calibration of the transmitter can be split into two halves: sensor calibration and analog output calibration.

Sensor calibration allows the user to adjust the pressure (digital value) reported by the transmitter to be equal to a pressure standard. The sensor calibration can adjust the pressure offset to correct for mounting conditions or line pressure effects. This correction is recommended. The calibration of the pressure range (pressure span or gain correction) requires accurate pressure standards (sources) to provide a full calibration.

1. Perform optional 4—20 mA 1—5 Vdc output trim.

2. Perform a sensor trim.

a. Zero/lower trim using line pressure effect

correction. Reference Rosemount 305, 306,

and 304 Manifolds for drain/vent valve

operation instructions.

b. Optional full scale trim. Sets the span of the

device and requires accurate calibration equipment.

c. Set/check basic configuration parameters.

Like the sensor calibration, the analog output can be calibrated to match the user measurement system. The analog output trim (4—20 mA/1—5 V output trim) will calibrate the loop at the 4 mA (1 V) and 20 mA (5 V) points.

The sensor calibration and the analog output calibration combine to match the transmitter’s measurement system to the plant standard.

Calibrate the sensor

 Sensor trim (page 67)  Zero trim (page 67)

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Calibrate the 4—20 mA output

 4—20 mA/1—5 V output trim (page 70)  4—20 mA/1—5V output trim using other scale (page 71)

5.4.1 Determining necessary sensor trims

Bench calibrations allow for calibrating the instrument for its desired range of operation. Straight forward connections to pressure source allow for a full calibration at the planned operating points. Exercising the Transmitter over the desired pressure range allows for verification of the analog output.

“Trim the pressure signal” on page 66 discusses how the trim operations change the calibration. It is

possible to degrade the performance of the transmitter if a trim is done improperly or with inaccurate equipment. The transmitter can be set back to factory settings using the recall factory trim command in

“Recall factory trim–sensor trim” on page 68.

For transmitters that are field installed, the manifolds discussed in Section 3: Rosemount 305, 306, and

304 Manifolds allow the differential transmitter to be zeroed using the zero trim function. Both 3-valve

and 5-valve manifolds are discussed. This field calibration will eliminate any pressure offsets caused by mounting effects (head effect of the oil fill) and static pressure effects of the process.

Determine the necessary trims with the following steps:

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1. Apply pressure

2. Check digital pressure, if the digital pressure does not match the applied pressure, perform a digital trim. See “Perform a sensor trim” on page 67.

3. Check reported analog output against the live analog output. If they do not match, perform an analog output trim. See “Performing digital-to-analog trim (4—20 mA/1—5 V output trim)” on

page 70.

Trimming with configuration buttons

Local configuration buttons are external buttons located underneath the top tag of the transmitter. There are two possible sets of local configuration buttons that can be ordered and used to perform trim operations: Digital zero trim and LOI. To access the buttons, loosen screw and rotate top tag until buttons are visible.

 LOI (M4): Can perform both digital sensor trim and the 4—20mA output trim (analog output trim).

Follow the same procedures listed in trimming with Field Communicator or AMS Device Manager listed below.

 Digital zero trim (DZ): Used for performing a sensor zero trim. See “Determining calibration

frequency” on page 64 for trim instructions.

All configuration changes should be monitored by a display or by measuring the loop output. shows the physical differences between the two sets of buttons.

Figure 5-1. Local Configuration Button Options

LOI–green retainer Digital zero trim–blue retainer

Figure 5-1

Operation and Maintenance

(Reference accuracy)2(Temperature effe ct)2(Static pressure effect)

0.025 U RL

Span

----------------------------- --------- 0 . 1 2 5+





% per 50 °F 0.167% of span=

0.1% reading per 1000 psi (69 bar) 0.05 % of span at maximum span=

Stability

0.100 URL

Span

----------------------------- ---------

% of span for 2 years 0.0069 % of URL for 1 month==

Cal. Freq.

Req. Performance TPE–

Stability per Month

------------------------------ ------------- ------------- ---------- --

0.3% 0.189 %–

0.0069%

------------------------------ -------------- 1 6 xmonths===

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5.4.2 Determining calibration frequency

Calibration frequency can vary greatly depending on the application, performance requirements, and process conditions. Use the following procedure to determine calibration frequency that meets the needs of your application:

1. Determine the performance required for your application.

2. Determine the operating conditions.

3. Calculate the Total Probable Error (TPE).

4. Calculate the stability per month.

5. Calculate the calibration frequency.

Sample calculation for Rosemount 2051

Step 1: Determine the performance required for your application.

Required Performance: 0.30% of span

Step 2: Determine the operating conditions.

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Transmitter: Rosemount 2051CD, range 2 (URL=250 inH2O[623 mbar])

Calibrated span: 150 inH

Ambient temperature change: ± 50 °F (28 °C)

Line pressure: 500 psig (34,5 bar)

O (374 mbar)

Step 3: Calculate TPE.

TPE = = 0.189% of span

Where:

Reference accuracy = ± 0.065% of span

Ambient temperature effect =

(1)

Span static pressure effect

1. Zero static pressure effect removed by zero trimming at line pressure.

Step 4: Calculate the stability per month.

Step 5: Calculate calibration frequency.

Sample calculation for Rosemount 2051C with P8 option (0.05% accuracy and 5-year stability)

Step 1: Determine the performance required for your application.

Required performance: 0.30% of span

Operation and Maintenance

Reference Manual

(Reference accuracy)2(Temperature effe ct)2(Static pressure effect)

0.025 U RL

Span

----------------------------- --------- 0 . 1 2 5+





% per 50 °F 0.0833% of span=

0.1% reading per 1000 psi (69 bar) 0.05 % of span at maximum span=

Stability

0.125 U RL

Span

----------------------------- ---------

% of span for 5 years 0.0035 % of URL for 1 month==

Cal. Freq.

Req. Performance TPE–

Stability per Month

------------------------------- ------------- ------------- -----------

0.3% 0.117%–

0.0035%

------------------------------- ------------- 5 2 m o n t h s===

00809-0100-4107, Rev CA

Step 2: Determine the operating conditions.

Transmitter: Rosemount 2051CD, range 2 (URL=250 inH2[623 mbar])

Calibrated span: 150 inH

Ambient temperature change: ±50 °F (28 °C)

Line pressure: 500 psig (34,5 bar)

Step 3: Calculate TPE.

O (374 mbar)

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July 2017

TPE =

Where:

Reference accuracy = ± 0.05% of span

Ambient temperature effect =

(1)

Span static pressure effect

1. Zero static pressure effect removed by zero trimming at line pressure.

= 0.117% of span

Step 4: Calculate the stability per month.

Step 5: Calculate calibration frequency.

5.4.3 Compensating for span line pressure effects (range 4 and range 5)

Rosemount 2051 Range 4 and 5 Pressure Transmitters require a special calibration procedure when used in differential pressure applications. The purpose of this procedure is to optimize transmitter performance by reducing the effect of static line pressure in these applications. The transmitters (ranges 0 through 3) do not require this procedure because optimization occurs at the sensor.

The systematic span shift caused by the application of static line pressure is —0.95 percent of reading per 1000 psi (69 bar) for range 4 transmitters, and —1 percent of reading per 1000psi (69 bar) for range 5 transmitters. Using the following procedure, the span effect can be corrected to ±0.2 percent of reading per 1000 psi (69 bar) for line pressures from 0 to 3626 psi (0 to 250 bar).

Use the following example to compute correct input values.

Example

A range 4 differential pressure HART® transmitter (Rosemount 2051CD4...) will be used in an application with a static line pressure of 1200 psi (83 bar). The transmitter output is ranged with 4 mA at 500 inH

(1, 2 bar) and 20 mA at 1500 inH pressure, first use the following formulas to determine the corrected values for the high trim value.

Operation and Maintenance

O (3, 7 bar). To correct for systematic error caused by high static line

Operation and Maintenance

July 2017

High Trim Value:

HT = (URV — [S/100 x P/1000 x LRV])

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00809-0100-4107, Rev CA

HT = Corrected High Trim Value

Where:

In this example:

URV = Upper Range Value

S = Span shift per specification (as a percent of reading)

P = Static Line Pressure in psi

URV = 1500 inH

S = —0.95%

P = 1200 psi

LT = 1500 — (—0.95%/100 x 1200 psi/1000 psi x 1500 inH

LT = 1517.1 inH

O (3.74 bar)

Complete the upper sensor trim procedure as described in “Perform a sensor trim” on page 67. In the example above, at step 4, apply the nominal pressure value of 1500 inH calculated correct upper sensor trim value of 1517.1 inH

O with a Field Communicator.

O. However, enter the

Note

The range values for the 4 and 20 mA points should be at the nominal URV and LRV. In the example above, the values are 1500 inH

O and 500 inH2O respectively. Confirm the values on the HOME screen of

the Field Communicator. Modify, Safety Instrumented Systems Requirements, by following the steps in

“Rerange the transmitter” on page 15.

5.5 Trim the pressure signal

5.5.1 Sensor trim overview

A sensor trim corrects the pressure offset and pressure range to match a pressure standard. The upper sensor trim corrects the pressure range and the lower sensor trim (zero trim) corrects the pressure offset. an accurate pressure standard is required for full calibration. a zero trim can be performed if the process is vented, or the high and low side pressure are equal (for differential pressure transmitters).

Zero trim is a single-point offset adjustment. It is useful for compensating for mounting position effects and is most effective when performed with the transmitter installed in its final mounting position. Since this correction maintains the slope of the characterization curve, it should not be used in place of a Sensor Trim over the full sensor range.

When performing a zero trim, ensure that the equalizing valve is open and all wet legs are filled to the correct levels. Line pressure should be applied to the transmitter during a zero trim to eliminate line pressure errors. Refer to Section 3: Manifold operation.

Note

Do not perform a zero trim on Rosemount 2051T Absolute Pressure Transmitters. Zero trim is zero based, and absolute pressure transmitters reference absolute zero. To correct mounting position effects on a transmitter, perform a low trim within the sensor trim function. The low trim function provides an offset correction similar to the zero trim function, but it does not require zero-based input.

Operation and Maintenance

Reference Manual

00809-0100-4107, Rev CA

Upper and lower sensor trim is a two-point sensor calibration where two end-point pressures are applied, all output is linearized between them, and requires an accurate pressure source. Always adjust the low trim value first to establish the correct offset. Adjustment of the high trim value provides a slope correction to the characterization curve based on the low trim value. The trim values help optimize performance over a specific measurement range.

Figure 5-2. Sensor Trim Example

Operation and Maintenance

July 2017

A. Before trim B. After trim

5.5.2 Perform a sensor trim

When performing a sensor trim, but the upper and lower limits can be trimmed. If both upper and lower trims are to be performed, the lower trim must be done prior to the upper time.

Note

Use a pressure input source that is at least four times more accurate than the transmitter, and allow the input pressure to stabilize for 10 seconds before entering any values.

Performing a sensor trim with a Field Communicator

From the HOME screen, enter the Fast Key sequence and follow the steps within the Field Communicator to complete the Sensor Trim.

Device Dashboard Fast Keys

To calibrate the sensor with a Field Communicator using the sensor trim function, perform the following procedure:

1. Select Lower Sensor Trim.

3, 4, 1

Note

Select pressure points so that lower and upper values are equal to or outside the expected process operation range. This can be done by going to “Rerange the transmitter” on page 15 of Section 2:

Configuration.

Operation and Maintenance

EXTENDED MENU

CALIBRAT

DAMPING TRANSFER FUNCT SCALED VARIAB ASSIGN PV TAG ALARM SAT VALUES PASSWORD SIMULATE HART REV BACK TO MENU EXIT MENU

VIEW CONFIG ZERO TRIM UNITS RERANGE LOOP TEST DISPLAY

EXTENDED MENU

EXIT MENU

CALIBRAT

ZERO TRIM

LOWER TRIM

UPPER TRIMUPPER TRIM

ANALOG TRIM FACTORY RECALL BACK TO MENU EXIT MENU

July 2017

2. Follow the commands provided by the Field Communicator to complete the adjustment of the lower

value.

3. Repeat the procedure for the upper value, replacing 2: Lower Sensor Trim with 3: Upper Sensor Trim in

Step 1.

Performing a sensor trim with AMS Device Manager

Right click on the device and, under the Method dropdown menu, move cursor over Calibrate and, under Sensor Trim, select Lower Sensor Trim.

1. Follow the screen prompts to perform a Sensor Trim using AMS Device Manager.

2. If desired, right click on the device and under the Method dropdown menu, move cursor over Calibrate

and under Sensor Trim and select Upper Sensor Trim

Performing a sensor trim using LOI

Perform an upper and lower sensor trim by referencing Figure 5-3.

Figure 5-3. Sensor Trim with LOI

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5.5.3 Recall factory trim–sensor trim

Performing a digital zero trim (option DZ)

A digital zero trim (option DZ) provides the same function as a zero/lower sensor trim, but can be completed in hazardous areas at any given time by simply pushing the zero trim button when the transmitter is at zero pressure. If the transmitter is not close enough to zero when the button is pushed, the command may fail due to excess correction. If ordered, a digital zero Trim can be performed by utilizing external configuration buttons located underneath the top tag of the transmitter, see Figure 5-1

on page 63 for DZ button location.

1. Loosen the top tag of the transmitter to expose buttons.

2. Press and hold the digital zero button for at least two seconds, then release to perform a digital zero

trim.

The recall factory trim–sensor trim command allows the restoration of the as-shipped factory settings of the sensor trim. This command can be useful for recovering from an inadvertent zero trim of an absolute pressure unit or inaccurate pressure source.

Operation and Maintenance

Reference Manual

EXTENDED MENU

CALIBRAT

DAMPING TRANSFER FUNCT SCALED VARIAB ASSIGN PV TAG ALARM SAT VALUES PASSWORD SIMULATE HART REV BACK TO MENU EXIT MENU

VIEW CONFIG ZERO TRIM UNITS RERANGE LOOP TEST DISPLAY

EXTENDED MENU

EXIT MENU

CALIBRAT

ZERO TRIM LOWER TRIM UPPER TRIM ANALOG TRIM

FACTORY RECALL

BACK TO MENU EXIT MENU

FACTORY RECALL

SENSOR RECALL

ANALOG RECALL BACK TO MENU EXIT MENU

00809-0100-4107, Rev CA

Recalling factory trim with a Field Communicator

From the HOME screen, enter the Fast Key sequence and follow the steps within the Field Communicator to complete the sensor trim.

Operation and Maintenance

July 2017

Device Dashboard Fast Keys

3, 4, 3

Recalling factory trim with AMS Device Manager

Right click on the device and, under the Method dropdown menu, move cursor over Calibrate and select Restore Factory Calibration.

1. Select Next after setting the control loop to manual.

2. Select Sensor Trim under Trim to recall and select Next.

3. Follow the screen prompts to recall sensor trim.

Recalling factory trim - sensor trim using LOI

Refer to Figure 5-4 to recall factory sensor trim.

Figure 5-4. Recall Factory Trim - Sensor Trim with LOI

5.6 Trim the analog output

Operation and Maintenance

The analog output trim commands allow you to adjust the transmitter’s current output at the 4 and 20 mA points to match the plant standards. This trim is performed after the digital to analog conversion so only the 4—20mA analog signal will be affected.

Figure 5-5 graphically shows the two ways the

characterization curve is affected when an analog output trim is performed.

Operation and Maintenance

mA Output

July 2017

Figure 5-5. Analog Output Trim Example

A. Before trim B. After Trim

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5.6.1 Performing digital-to-analog trim (4—20 mA/1—5 V output trim)

Note

If a resistor is added to the loop, ensure that the power supply is sufficient to power the transmitter to a 20 mA output with additional loop resistance. Refer to “Power supply” on page 54.

Performing a 4—20 mA/1—5 V output trim with a Field Communicator

From the HOME screen, enter the Fast Key sequence and follow the steps within the Field Communicator to complete the 4—20 mA output trim.

Device Dashboard Fast Keys

3, 4, 2, 1

Performing a 4—20 mA/1—5 V output trim with AMS Device Manager

Right click on the device and, under the Method drop down menu, move cursor over Calibrate and select Analog Calibration.

1. Select Digital to Analog Trim.

2. Follow the screen prompts to perform a 4—20 mA output trim.

Operation and Maintenance

Reference Manual

EXTENDED MENU

CALIBRAT

DAMPING TRANSFER FUNCT SCALED VARIAB ASSIGN PV TAG ALARM SAT VALUES PASSWORD SIMULATE HART REV BACK TO MENU EXIT MENU

VIEW CONFIG ZERO TRIM UNITS RERANGE LOOP TEST DISPLAY

EXTENDED MENU

EXIT MENU

CALIBRAT

ZERO TRIM LOWER TRIM UPPER TRIM

ANALOG TRIM

FACTORY RECALL BACK TO MENU EXIT MENU

00809-0100-4107, Rev CA

Performing 4—20mA/1—5 V output trim using LOI

Figure 5-6. 4—20mA Output Trim Using LOI

Operation and Maintenance

July 2017

5.6.2 Performing digital-to-analog trim (4—20mA/1—5 V output trim)

5.6.3 Recalling factory trim–analog output

Operation and Maintenance

using other scale

The Scaled 4—20 mA output Trim command matches the 4 and 20 mA points to a user selectable reference scale other than 4 and 20 mA (for example, 2 to 10 volts if measuring across a 500  load, or 0 to 100 percent if measuring from a Distributed Control System [DCS]). To perform a scaled 4—20 mA output trim, connect an accurate reference meter to the transmitter and trim the output signal to scale, as outlined in the output trim procedure.

Performing a 4—20/ 1—5 V mA output trim using other scale with a Field Communicator

From the HOME screen, enter the Fast Key sequence and follow the steps within the Field Communicator to complete the 4—20 mA output trim using other scale.

Device Dashboard Fast Keys

Performing a 4—20 mA/1—5 V output trim using other scale with AMS Device Manager

Right click on the device and under the Method dropdown menu, move cursor over Calibrate and select Analog Calibration.

1. Select Scaled Digital to Analog Trim.

2. Follow screen prompts to perform a 4—20 mA/1—5 V output trim.

The recall factory trim–analog output command allows the restoration of the as-shipped factory settings of the analog output trim. This command can be useful for recovering from an inadvertent trim, incorrect plant standard or faulty meter.

3, 4, 2, 2

Operation and Maintenance

EXTENDED MENU

CALIBRAT

DAMPING TRANSFER FUNCT SCALED VARIAB ASSIGN PV TAG ALARM SAT VALUES PASSWORD SIMULATE HART REV BACK TO MENU EXIT MENU

VIEW CONFIG ZERO TRIM UNITS RERANGE LOOP TEST DISPLAY

EXTENDED MENU

EXIT MENU

CALIBRAT

ZERO TRIM LOWER TRIM UPPER TRIM ANALOG TRIM

FACTORY RECALL

BACK TO MENU EXIT MENU

FACTORY RECALL

SENSOR RECALL

ANALOG RECALL

BACK TO MENU EXIT MENU

July 2017

Recalling factory trim - analog output with a Field Communicator

From the HOME screen, enter the Fast Key sequence and follow the steps within the Field Communicator to complete the digital to analog trim using other scale.

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00809-0100-4107, Rev CA

Device Dashboard Fast Keys

3, 4, 3

Recalling factory trim - analog output with AMS Device Manager

Right click on the device and, under the Method drop down menu, move cursor over Calibrate and select Restore Factory Calibration.

1. Select Next to set the control loop to manual.

2. Select Analog Output Trim under Select trim to recall and select Next.

3. Follow screen prompts to recall analog output trim.

Recalling factory trim - analog output with LOI

Reference Figure 5-7 for LOI instructions.

Figure 5-7. Recall Factory Trim — analog output with LOI

5.7 Switching HART Revision

5.7.1 Switching HART Revision with generic menu

Some systems are not capable of communicating with HART Revision 7 devices. The following procedures list how to change HART Protocol revisions between HART Revision 7 and HART Revision 5.

If the HART Protocol configuration tool is not capable of communicating with a HART Revision 7 device, it should load a generic menu with limited capability. The following procedures allow for switching between HART Revision 7 and HART Revision 5 from a generic menu.

1. Locate “Message” field

a. To change to HART Revision 5, Enter: HART5 in the message field b. To change to HART Revision 7, Enter: HART7 in the message field

Operation and Maintenance

Reference Manual

EXTENDED MENU

CALIBRAT DAMPING TRANSFER FUNCT SCALED VARIAB ASSIGN PV TAG ALARM SAT VALUES PASSWORD SIMULATE

HART REV

BACK TO MENU EXIT MENU

VIEW CONFIG ZERO TRIM UNITS RERANGE LOOP TEST DISPLAY

EXTENDED MENU

EXIT MENU

00809-0100-4107, Rev CA

Operation and Maintenance

5.7.2 Switching HART Revision with Field Communicator

From the HOME screen, enter the Fast Key sequence and follow steps within the Field Communicator to complete the HART revision change.

From the HOME screen, enter the Fast Key sequence HART5 HART7

Device Dashboard Fast Keys

2, 2, 5, 2, 4 2, 2, 5, 2, 3

5.7.3 Switching HART Revision with AMS Device Manager

1. Select on Manual Setup and select HART.

2. Select Change HART Revision then follow the on screen prompts.

Note

AMS Device Manager versions 10.5 or greater are compatible with HART Revision 7.

5.7.4 Switching HART Revision with LOI

July 2017

Navigate to HART REV within the extended menu and select if either HART REV 5 or HART REV 7. Use

Figure 5-8 below to change HART Revision:

Figure 5-8. Change HART Revision with LOI

Operation and Maintenance

July 2017

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00809-0100-4107, Rev CA

Operation and Maintenance

Reference Manual

00809-0100-4107, Rev CA

Section 6 Troubleshooting

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 75

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 75

Diagnostic messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 77

Disassembly procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 80

Reassembly procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 81

6.1 Overview

Ta bl e 6 - 1 provides summarized maintenance and troubleshooting suggestions for the most common

operating problems.

If you suspect malfunction despite the absence of any diagnostic messages on the Field Communicator display, consider using Section 6: Diagnostic messages on page 77 to identify any potential problem.

Troubleshooting

July 2017

6.2 Safety messages

warning symbol ( ). Refer to the following safety messages before performing an operation preceded by this symbol.

Explosions could result in death or serious injury.

 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.

™

2051 reference manual for any restrictions associated with a safe installation.

Troubleshooting

July 2017

Table 6-1. Rosemount 2051 Troubleshooting Table for 4—20 mA Output

Symptom Corrective actions

Transmitter milliamp reading is zero Verify terminal voltage is 10.5 to 42.4 Vdc at signal terminals

Check power wires for reversed polarity

Check that power wires are connected to signal terminals

Check for open diode across test terminal

Transmitter Not Communicating with Field Communicator

Transmitter milliamp reading is low or high Verify applied pressure

Verify terminal voltage is 10.5 to 42.4 Vdc

Check loop resistance, 250  minimum (PS voltage -transmitter voltage/loop current)

Check that power wires are connected to signal terminals and not test terminals

Verify clean DC Power to transmitter (Max AC noise 0.2 volts peak to peak)

Verify the output is between 4 and 20 mA or saturation levels

Have Field Communicator poll for all addresses

00809-0100-4107, Rev CA

Reference Manual

Verify 4 and 20 mA range points

Verify output is not in alarm condition

Perform analog trim

Check that power wires are connected to the correct signal terminals (positive to positive, negative to negative) and not the test terminal

Transmitter will not respond to changes in applied pressure

Digital Pressure Variable reading is low or high Check impulse piping for blockage or low fill in wet leg

Digital Pressure Variable reading is erratic Check application for faulty equipment in pressure line

Milliamp reading is erratic Verify power source to transmitter has adequate voltage and current

Check impulse piping or manifold for blockage

Verify applied pressure is between the 4 and 20 mA points

Verify the output is not in alarm condition

Verify transmitter is not in loop test mode

Verify transmitter is not in multidrop mode

Check test equipment

Verify transmitter is calibrated properly

Check test equipment (verify accuracy)

Verify pressure calculations for application

Verify transmitter is not reacting directly to equipment turning on/off

Verify damping is set properly for application

Check for external electrical interference

Verify transmitter is properly grounded

Verify shield for twisted pair is only grounded at one end

Troubleshooting

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6.3 Diagnostic messages

Troubleshooting

July 2017

Listed in the below sections are detailed table of the possible messages that will appear on either the LOI/LCD display, a Field Communicator, or an AMS

Device Manager system. Use the tables below to

diagnose particular status messages.

 Good  Failed — fix now  Maintenance — fix soon  Advisory

6.3.1 Diagnostic message: Failed - fix now

Table 6-2. Status: Failed — Fix Now

Alert name LCD screen LOI screen Problem Recommended action

No Pressure Updates

Electronics Board Failure

Critical Sensor Data Error

Critical Electronics Data Error

Sensor Failure FA IL

Incompatible Electronics and Sensor

NO P UPDATE

FAI L BOARD

MEMRY ERROR

SENSOR

XMTR MSMTCH

NO PRESS UPDATE

FAI L BOARD

MEMORY ERROR

FAI L SENSOR

XMTR MSMTCH

There are no pressure updates from the sensor to the electronics

A failure has been detected in the electronics circuit board

A user written parameter does not match the expected value

A failure has been detected in the pressure sensor

The pressure sensor is incompatible with the attached electronics

1. Ensure the sensor cable connection to the electronics is tight.

2. Replace the pressure sensor.

1. Replace the electronics board.

1. Confirm and correct all parameters listed in Device Information.

2. Perform a Device Reset.

3. Replace sensor module.

1. Confirm and correct all parameters listed in Device Information.

2. Perform a Device Reset.

3. Replace electronics board.

1. Replace the pressure sensor.

1. Replace the electronics board or sensor with compatible hardware.

Troubleshooting

July 2017

6.3.2 Diagnostic message: Maintenance - fix soon

Table 6-3. Status: Maintenance — Fix Soon

Alert name LCD screen LOI screen Problem Recommended action

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No Tem pe ra tu re Updates

Pressure Out of Limits

Sensor Tem pe ra tu re Beyond Limits

Electronics Tem pe ra tu re Beyond Limits

Electronics Board Parameter Error

Configuration Buttons Operator Error

NO T UPDATE

PRES LIMITS

TEMP LIMITS

MEMRY WARN (also in advisory)

STUCK BUTTON

NO TEMP UPDATE

PRES OUT LIMITS

TEMP OUT LIMITS

MEMORY WAR N (also in advisory)

STUCK BUTTON

There are no temperature updates from the sensor to the electronics

The pressure is either above or below the sensor limits

The sensor temperature has exceeded its safe operating range

The temperature of the electronics has exceeded its safe operating range.

A device parameter does not match the expected value. The error does not affect transmitter operation or analog output.

Device is not responding to button presses.

1. Ensure the sensor cable connection to the electronics is tight.

2. Replace the pressure sensor.

1. Check the transmitter pressure connection to ensure it is not plugged or the isolating diaphragms are not damaged.

2. Replace the pressure sensor.

1. Check the process and ambient conditions are within —85 to 194 °F (—65 to 90 °C).

2. Replace the pressure sensor.

1. Confirm electronics temperature is within limits of — 85 to 194 °F (—65 to 90 °C).

2. Replace electronics board.

1. Replace the electronics board.

1. Check configuration buttons are not stuck.

2. Replace the electronics board.

Troubleshooting

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6.3.3 Diagnostic message: Advisory

Table 6-4. Status: Advisory

LCD

Alert name

Non-Critical User Data Warning

Sensor Parameter Warning

LCD Display Update Failure

Configuration Changed

Analog Output Fixed

Simulation Active

Analog Output Saturated

screen

MEMRY WAR N

[If display is not updating]

[none] [none]

ANLOG FIXED

[none] [none]

ANLOG SAT

LOI screen Problem Recommended action

MEMORY WAR N

[If display is not updating]

ANALOG FIXED

ANALOG SAT

A user written parameter does not match expected value.

The LCD Display is not receiving updates from the pressure sensor.

A recent change has been made the device by a secondary HART master such as a handheld device.

The analog output is fixed and does not represent the process measurement. This may be caused by other conditions in the device, or because the device has been set to loop test or multidrop mode.

The device is in simulation mode and may not be reporting actual information.

The analog output is saturated either high or low due to the pressure either above or below the range values.

Troubleshooting

July 2017

1. Confirm and correct all parameters listed in Device Information.

2. Perform a Device Reset.

3. Replace Electronics Board.

1. Confirm and correct all parameters listed in Device Information.

2. Perform a Device Reset.

3. Replace pressure sensor.

1. Check the connection between the LCD display and the circuit board.

2. Replace the LCD display.

3. Replace the electronics board.

1. Verify that the configuration change of the device was intended and expected.

2. Clear this alert by selecting Clear Configuration Changed Status.

3. Connect a HART Manager or similar which will automatically clear it.

1. Take action on any other notifications from the device.

2. If the device is in loop test, and should no longer be, disable or momentarily remove power.

3. If the device is in multidrop mode and should not be, re-enable loop current by setting the polling address to 0.

1. Verify that simulation is no longer required.

2. Disable simulation mode in service tools.

3. Perform a device reset.

1. Check the pressure applied to ensure it is between the 4—20mA points.

2. Check the transmitter pressure connection to make sure it is not plugged or isolating diaphragms are not damaged.

3. Replace the pressure sensor.

master such as AMS Device

Troubleshooting

July 2017

6.4 Disassembly procedures

Do not remove the instrument cover in explosive atmospheres when the circuit is live.

6.4.1 Removing from service

Follow these steps:

1. Follow all plant safety rules and procedures.

2. Power down device.

3. Isolate and vent the process from the transmitter before removing the transmitter from service.

4. Remove all electrical leads and disconnect conduit.

5. Remove the transmitter from the process connection. a. The Rosemount 2051C Transmitter is attached to the process connection by four bolts and two

cap screws. Remove the bolts and screws and separate the transmitter from the process connection. Leave the process connection in place and ready for re-installation. Reference

“Installation procedures” on page 30 for coplanar flange.

b. The Rosemount 2051T Transmitter is attached to the process by a single hex nut process

connection. Loosen the hex nut to separate the transmitter from the process. Do not wrench on neck of transmitter. See warning in “In-line process connection” on page 38.

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6. Do not scratch, puncture, or depress the isolating diaphragms.

7. Clean isolating diaphragms with a soft rag and a mild cleaning solution, and rinse with clear water.

8. For the Rosemount 2051C, whenever you remove the process flange or flange adapters, visually

inspect the PTFE O-rings. Replace the O-rings if they show any signs of damage, such as nicks or cuts. Undamaged O-rings may be reused.

6.4.2 Removing terminal block

Electrical connections are located on the terminal block in the compartment labeled “FIELD TERMINALS.”

1. Remove the housing cover from the field terminal side.

2. Loosen the two small screws located on the assembly in the 9 o’clock and 5 o’clock positions relative

to the top of the transmitter.

3. Pull the entire terminal block out to remove it.

6.4.3 Removing the electronics board

The transmitter electronics board is located in the compartment opposite the terminal side. To remove the electronics board see Figure 4-2 on page 51 and perform following procedure:

1. Remove the housing cover opposite the field terminal side.

2. If you are disassembling a transmitter with a LOI/LCD display, loosen the two captive screws that are

visible (See Figure 4-1 on page 50 for screw locations). The two screws anchor the LOI/LCD display to the electronics board and the electronics board to the housing.

Troubleshooting

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Note

The electronics board is electrostatically sensitive; observe handling precautions for static-sensitive components

3. Using the two captive screws, slowly pull the electronics board out of the housing. The sensor module

ribbon cable holds the electronics board to the housing. Disengage the ribbon cable by pushing the connector release.

Note

If an LOI/LCD display is installed, use caution as there is an electronic pin connector that interfaces between the LOI/LCD display and electronics board.

Troubleshooting

6.4.4 Removing sensor module from the electronics housing

1. Remove the electronics board. Refer to “Removing the electronics board” on page 80.

Note

To prevent damage to the sensor module ribbon cable, disconnect it from the electronics board before you remove the sensor module from the electrical housing.

July 2017

2. Carefully tuck the cable connector completely inside of the internal black cap.

Note

Do not remove the housing until after you tuck the cable connector completely inside of the internal black cap. The black cap protects the ribbon cable from damage that can occur when you rotate the housing.

3. Using a

4. Unscrew the module from the housing, making sure the black cap on the sensor module and sensor

cable do not catch on the housing.

/64-inch hex wrench, loosen the housing rotation set screw one full turn.

6.5 Reassembly procedures

1. Inspect all cover and housing (non-process wetted) O-rings and replace if necessary. Lightly grease

with silicone lubricant to ensure a good seal.

2. Carefully tuck the cable connector completely inside the internal black cap. To do so, turn the black

cap and cable counterclockwise one rotation to tighten the cable.

3. Lower the electronics housing onto the module. Guide the internal black cap and cable on the sensor

module through the housing and into the external black cap.

4. Turn the module clockwise into the housing.

Troubleshooting

July 2017

Note

Make sure the sensor ribbon cable and internal black cap remain completely free of the housing as you rotate it. Damage can occur to the cable if the internal black cap and ribbon cable become hung up and rotate with the housing.

5. Thread the housing completely onto the sensor module. The housing must be no more than one full

turn from flush with the sensor module to comply with explosion proof requirements.

6. Tighten the housing rotation set screw using a

6.5.1 Attaching electronics board

1. Remove the cable connector from its position inside of the internal black cap and attach it to the

electronics board.

2. Using the two captive screws as handles, insert the electronics board into the housing. Make sure the

power posts from the electronics housing properly engage the receptacles on the electronics board. Do not force. The electronics board should slide gently on the connections.

3. Tighten the captive mounting screws.

/64-in. hex wrench.

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4. Replace the electronics housing cover. The transmitter covers must be engaged metal-to-metal to

ensure a proper seal and to meet explosion-proof requirements.

6.5.2 Installing terminal block

1. Gently slide the terminal block into place, making sure the two power posts from the electronics

housing properly engage the receptacles on the terminal block.

2. Tighten the captive screws.

3. Replace the electronics housing cover. The transmitter covers must be fully engaged to meet

explosion-proof requirements.

6.5.3 Reassembling the Rosemount 2051C Process Flange

1. Inspect the sensor module PTFE O-rings. Undamaged O-rings may be reused. Replace O-rings that

show any signs of damage, such as nicks, cuts, or general wear.

Note

If you are replacing the O-rings, be careful not to scratch the O-ring grooves or the surface of the isolating diaphragm when removing the damaged O-rings.

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2. Install the process connection. Possible options include: a. Coplanar process flange:

— Hold the process flange in place by installing the two alignment screws to finger tightness (screws

— Install the four 1.75-in. flange bolts by finger tightening them to the flange.

b. Coplanar process flange with flange adapters:

— Hold the process flange in place by installing the two alignment screws to finger tightness (screws

— Hold the flange adapters and adapter O-rings in place while installing (in the desired of the four

c. Manifold:

— Contact the manifold manufacturer for the appropriate bolts and procedures.

3. Tighten the bolts to the initial torque value using a crossed pattern. See Table 6-5 on page 83 for

appropriate torque values.

4. Using same cross pattern, tighten bolts to final torque values seen in Table 6-5 on page 83.

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July 2017

are not pressure retaining). Do not overtighten as this will affect module-to-flange alignment.

possible process connection spacing configurations) using four 2.88-in. bolts to mount securely to the coplanar flange. For gage pressure configurations, use two 2.88-in. bolts and two 1.75-in. bolts.

Table 6-5. Bolt Installation Torque Values

Bolt material Initial torque value Final torque value

Carbon steel–ASTM-A445 Standard 300 in-lb (34 N-m) 650 in-lb (73 N-m)

316 stainless steel–Option L4 150 in-lb (17 N-m) 300 in-lb (34 N-m)

ASTM-A-19 B7M–option L5 300 in-lb (34 N-m) 650 in-lb (73 N-m)

ASTM-A-193 Class 2, Grade B8M–option L8 150 in-lb (17 N-m) 300 in-lb (34 N-m)

Note

If you replaced the PTFE sensor module O-rings, re-torque the flange bolts after installation to compensate for cold flow.

Note

For range 1 transmitters: After replacing O-rings and re-installing the process flange, expose the transmitter to a temperature of 185 °F (85 °C) for two hours. Then re-tighten the flange bolts in a cross pattern, and again expose the transmitter to a temperature of 185 °F (85 °C) for two hours before calibration.

6.5.4 Installing drain/vent valve

1. Apply sealing tape to the threads on the seat. Starting at the base of the valve with the threaded end

poin

ting toward the installer, apply five clockwise turns of sealing tape.

Troubleshooting

2. Tighten the drain/vent valve seat to 250 in-lb (28,25 N-m).

3. Take care to place the opening on the valve so that process fluid will drain toward the ground and

away from human contact when the valve is opened.

Troubleshooting

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Troubleshooting

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NAMUR Software Revision Number

(1)

1.0.x—1.4.x

1. NAMUR Software Revision: Located on the metal device tag

00809-0100-4107, Rev CA

Safety Instrumented Systems Requirements

Section 7 Safety Instrumented Systems

Requirements

Safety Instrumented Systems (SIS) Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 85

7.1 Safety Instrumented Systems (SIS) Certification

The safety-critical output of the Rosemount™ 2051 is provided through a two-wire, 4—20 mA signal representing pressure. The Rosemount 2051 safety certified pressure transmitter is certified to: Low Demand; Type B. SIL 2 for random integrity @ HFT=0 SIL 3 for random integrity @ HFT=1 SIL 3 for systematic integrity

7.1.1 Rosemount 2051 safety certified identification

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All Rosemount 2051 Transmitters must be identified as safety certified before installing into SIS systems.

To identify a safety certified Rosemount 2051C, Rosemount 2051T, Rosemount 2051L:

1. Check NAMUR Software Revision located on the metal device tag. "SW _._._".

2. Transmitter output code “A” (4—20 mA HART Protocol).

7.1.2 Installation in SIS applications

Installations are to be performed by qualified personnel. No special installation is required in addition to the standard installation practices outlined in this document. Always ensure a proper seal by installing the electronics housing cover(s) so that metal contacts metal.

Environmental and operational limits are available in Appendix A: Specifications and Reference Data.

The loop should be designed so the terminal voltage does not drop below 10.5 Vdc when the transmitter output is set to 23 mA.

Position the security switch to the ( ) position to prevent accidental or deliberate change of configuration data during normal operation.

Safety Instrumented Systems Requirements

Normal operation

4 mA

20 mA

20.8 mA

High saturation

21.75

(2)

3.9 mA

Low saturation

3.75 mA

(1)

Normal operation

4 mA

20 mA

20.5 mA

High saturation

22.5

(2)

3.8 mA

Low saturation

3.6 mA

(1)

Normal operation

4 mA

20 mA

20.1—22.9 mA

High saturation

20.2—23.0

(2)

3.7—3.9 mA

Low saturation

3.6 - 3.8 mA

(1)

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7.1.3 Configuring in SIS applications

Use any HART® Protocol capable configuration tool to communicate with and verify configuration of the Rosemount 2051.

Note

Transmitter output is not safety-rated during the following: Configuration changes, multidrop, and loop test. Alternative means should be used to ensure process safety during transmitter configuration and maintenance activities.

Damping

User-selected damping will affect the transmitters ability to respond to changes in the applied process. The damping value + response time must not exceed the loop requirements.

Reference “Damping” on page 17 to change damping value.

Alarm and saturation levels

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DCS or safety logic solver should be configured to match transmitter configuration. the three alarm levels available and their operation values.

Figure 7-1. Alarm Levels

Rosemount alarm level

NAMUR alarm level

Custom alarm level

1. Transmitter failure, hardware or software alarm in LO position.

2. Transmitter failure, hardware or software alarm in HI position.

Figure 7-1

identifies

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Safety Instrumented Systems Requirements

7.1.4 Rosemount 2051 SIS operation and maintenance

Proof test

The following proof tests are recommended. In the event that an error is found in the safety and functionality, proof test results and corrective actions taken can be documented at Emerson.com/Rosemount/Safety out by qualified personnel.

Use “Field Communicator Fast Keys” on page 184 to perform a loop test, analog output trim, or sensor

trim. Security switch should be in the ( ) position during proof test execution and repositioned in the

( ) position after execution.

Simple proof test

The simple suggested proof test consists of a power cycle plus reasonability checks of the transmitter output. Reference the FMEDA Report

Required tools: Field Communicator and mA meter.

1. Bypass the safety function and take appropriate action to avoid a false trip.

for percent of possible DU failures in the device.

. All proof test procedures must be carried

July 2017

2. Use HART communications to retrieve any diagnostics and take appropriate action.

3. Send a HART command to the transmitter to go to the high alarm current output and verify that the

analog current reaches that value

4. Send a HART command to the transmitter to go to the low alarm current output and verify that the

analog current reaches that value

5. Remove the bypass and otherwise restore the normal operation.

6. Place the Security switch in the ( ) position.

(1)

. See “Verifying alarm level” on page 24.

(1)

Comprehensive proof test

The comprehensive proof test consists of performing the same steps as the simple suggested proof test but with a two point calibration of the pressure sensor in place of the reasonability check. Reference the

FMEDA Report

for percent of possible DU failures in the device.

1. This tests for possible quiescent current related failures.

Safety Instrumented Systems Requirements

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Required tools: Field Communicator and pressure calibration equipment.

1. Bypass the safety function and take appropriate action to avoid a false trip.

2. Use HART communications to retrieve any diagnostics and take appropriate action.

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3. Send a HART command to the transmitter to go to the high alarm current output and verify that the

analog current reaches that value

4. Send a HART command to the transmitter to go to the low alarm current output and verify that the

analog current reaches that value

5. Perform a two-point calibration of the sensor (see “Trim the pressure signal” on page 66) over the full

working range and verify the current output at each point.

6. Remove the bypass and otherwise restore the normal operation.

7. Place the Security switch in the ( ) position.

Note

 The user determines the proof test requirements for impulse piping.  Automatic diagnostics are defined for the corrected % DU: The tests performed internally by the device

during runtime without requiring enabling or programming by the user.

Calculation of average probability of failure on demand (PFD

PFD

calculation can be found in the FMEDA Report.

AVG

7.1.5 Inspection

(1)

. See “Verifying alarm level” on page 24.

(1)

AVG

)

Visual inspection

Not required

Special tools

Not required

Product repair

The Rosemount 2051 is repairable by major component replacement.

All failures detected by the transmitter diagnostics or by the proof-test must be reported. Feedback can be submitted electronically at Emerson.com/Rosemount/Contact-Us

All product repair and part replacement should be performed by qualified personnel.

Rosemount 2051 SIS reference

The Rosemount 2051 must be operated in accordance to the functional and performance specifications provided in Appendix A: Specifications and Reference Data.

1. This tests for compliance voltage problems such as a low loop power supply voltage or increased wiring distance. This also tests for other possible failures.

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Failure rate data

The FMEDA Report includes failure rates and common cause Beta factor estimates.

Failure values

 Safety accuracy: ±2.0%  Transmitter response time: 1.5 seconds  Self-diagnostics test: At least once every 60 minutes

Product life

50 years - based on worst case component wear-out mechanisms - not based on wear-out of process wetted materials

Safety Instrumented Systems Requirements

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Safety Instrumented Systems Requirements

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Safety Instrumented Systems Requirements

Rosemount 2051L, 2051C Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Section 1 Introduction

1.1 Using this manual

1.2 Models covered

1.3 HART installation flowchart

1.4 Transmitter overview

1.5 Service support

1.6 Product recycling/disposal

Section 2 Configuration

2.1 Configuration overview

2.2 Safety messages

2.3 System readiness

2.4 Configuration basics

2.5 Verify configuration

2.6 Basic setup of the transmitter

2.7 Configuring the LCD display

2.8 Detailed transmitter setup

2.9 Performing transmitter tests

2.10 Configuring burst mode

2.11 Establishing multidrop communication

Section 3 Hardware Installation

3.1 Overview

3.2 Safety messages

3.3 Installation considerations

3.4 Installation procedures

3.5 Rosemount 305, 306, and 304 Manifolds

3.6 Liquid level measurement

Section 4 Electrical Installation

4.1 Overview

4.2 Safety messages

4.3 Local Operating Interface (LOI)/LCD display

4.4 Configure security and simulation

4.5 Setting transmitter alarm

4.6 Electrical considerations

Section 5 Operation and Maintenance

5.1 Overview

5.2 Safety messages

5.3 Recommended calibration tasks

5.4 Calibration overview

5.5 Trim the pressure signal

5.6 Trim the analog output

5.7 Switching HART Revision

Section 6 Troubleshooting

6.1 Overview

6.2 Safety messages

6.3 Diagnostic messages

6.4 Disassembly procedures

6.5 Reassembly procedures

7.1 Safety Instrumented Systems (SIS) Certification