Rosemount 3051C Operating Manual

Download

Page 1

00809-0100-4001, Rev KA

Rosemount™ 3051 Pressure Transmitter

with HART® Protocol

Reference Manual

May 2017

Page 2

Page 3

Reference Manual

00809-0100-4001, Rev KA

Contents

1Section 1: Introduction

2Section 2: Configuration

Contents

May 2017

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

1.2 Models covered. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.3 Product recycling/ disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.3.1 Setting the loop to manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.3.2 Wiring diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.4 Configuration data review. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.5 Field Communicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.5.1 Field Communicator user interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.6 Field Communicator menu trees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.7 Traditional Fast Key sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.8 Check output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.8.1 Process variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.8.2 Sensor temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.9 Basic setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.9.1 Set process variable units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.9.2 Set output (transfer function). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.9.3 Rerange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.9.4 Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.10 LCD display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.10.1 LCD display configuration for 4–20 mA HART only. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.10.2 Custom display configuration 4–20 mA HART only . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.11 Detailed setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.11.1 Failure mode alarm and saturation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.11.2 Alarm and saturation levels for burst mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.11.3 Alarm and saturation values for multidrop mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.11.4 Alarm level verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.12 Diagnostics and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Contents

2.12.1 Loop test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.13 Advanced functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

2.13.1 Saving, recalling, and cloning configuration data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

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2.13.2 Burst mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2.14 Multidrop communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

2.15 Changing a transmitter address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

2.15.1 Communicating with a multidropped transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

2.15.2 Polling a multidropped transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3Section 3: Installation

3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.2 Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.3 General considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.4 Mechanical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.5 Draft range considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.6 Environmental considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.7 HART installation flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3.8 Installation procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.8.1 Mount the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.8.2 Impulse piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.8.3 Process connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

3.8.4 Inline process connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

3.8.5 Housing rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

3.8.6 LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

3.8.7 Configure security and alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

3.9 Electrical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

3.9.1 Conduit installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

3.9.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

3.9.3 Transient protection terminal block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

3.9.4 Grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3.10 Hazardous locations certifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

3.11 Rosemount 305, 306, and 304 Manifolds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

3.11.1 Rosemount 305 Integral Manifold installation procedure. . . . . . . . . . . . . . . . . . . . . . . 52

3.11.2 Rosemount 306 Integral Manifold installation procedure. . . . . . . . . . . . . . . . . . . . . . . 53

3.11.3 Rosemount 304 Conventional Manifold installation procedure. . . . . . . . . . . . . . . . . . 53

3.11.4 Manifold operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

3.12 Liquid level measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

3.12.1 Open vessels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

3.12.2 Closed vessels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Contents

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4Section 4: Operation and Maintenance

Contents

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4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

4.2 Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

4.3 Calibration overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

4.3.1 Determining calibration frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

4.3.2 Selecting a trim procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

4.4 Analog output trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

4.4.1 Digital-to-Analog trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

4.4.2 Digital-to-Analog trim using other scale. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

4.4.3 Recall factory trim—analog output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

4.5 Sensor trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

4.5.1 Sensor trim overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

4.5.2 Zero trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

4.5.3 Sensor trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

4.5.4 Recall factory trim—sensor trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

4.5.5 Line pressure effect (range 2 and 3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

4.5.6 Compensating for line pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

5Section 5: Troubleshooting

5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

5.2 Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

5.3 Diagnostic messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

5.4 Disassembly procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

5.4.1 Remove from service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

5.4.2 Remove terminal block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

5.4.3 Remove the electronics board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

5.4.4 Remove the sensor module from the electronics housing . . . . . . . . . . . . . . . . . . . . . . 85

5.5 Reassembly procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

5.5.1 Attach the electronics board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

5.5.2 Install the terminal block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

5.5.3 Reassemble the Rosemount 3051C process flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

AAppendix A: Specifications and Reference Data

A.1 Performance specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

A.1.1 Conformance to specification (±3s [Sigma]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

A.1.2 Reference accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Contents

A.1.3 Total performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

A.1.4 Long term stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

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A.1.5 Dynamic performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

A.1.6 Line pressure effect per 1000 psi (6,9 MPa) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

A.1.7 Ambient temperature effect per 50 °F (28 °C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

A.1.8 Mounting position effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

A.1.9 Vibration effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

A.1.10 Power supply effect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

A.1.11 Electromagnetic

compatibility (EMC)92

A.1.12 Transient protection (option code T1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

A.2 Functional specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

A.2.1 Range and sensor limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

A.2.2 Zero and span adjustment requirements (HART and Low Power) . . . . . . . . . . . . . . . . 94

A.2.3 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

A.2.4 4–20 mA (output code A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

A.2.5 Foundation Fieldbus (output code F) and PROFIBUS

(output code W) . . . . . . . . . . . 94

A.2.6 Foundation Fieldbus function block execution times. . . . . . . . . . . . . . . . . . . . . . . . . . . 95

A.2.7 Foundation Fieldbus parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

A.2.8 Standard function blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

A.2.9 Backup Link Active Scheduler (LAS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

A.2.10 Advanced control function block suite (option code A01) . . . . . . . . . . . . . . . . . . . . . . 95

A.2.11 Foundation Fieldbus Diagnostics Suite (option code D01) . . . . . . . . . . . . . . . . . . . . . . 96

A.2.12 Low Power (output code M) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

A.2.13 Static pressure limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

A.2.14 Burst pressure limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

A.2.15 Failure mode alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

A.2.16 Temperature limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

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

A.3.1 Electrical connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

A.3.2 Process connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

A.3.3 Process-wetted parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

A.3.4 Rosemount 3051L process wetted parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

A.3.5 Non-wetted parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

A.3.6 Shipping weights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

A.4 Dimensional drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

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

A.6 Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

A.7 Spare parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

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BAppendix B: Product Certifications

Contents

May 2017

B.1 European directive information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

B.2 Ordinary location certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

B.3 North America. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

B.4 Europe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

B.5 International . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

B.6 Brazil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

B.7 China . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

B.8 Japan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

B.9 Technical Regulations Customs Union (EAC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

B.10 Combinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

B.11 Conduit plugs and adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

B.12 Additional Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

B.13 Approval drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

B.13.1 Factory mutual 03031-1019 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

B.13.2 Canadian standards association (CSA) 03031-1024. . . . . . . . . . . . . . . . . . . . . . . . . . . 166

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viii

Contents

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NOTICE

00809-0100-4001, Rev KA

Rosemount™ 3051 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

May 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

Page 10

Title Page

May 2017

Reference Manual

00809-0100-4001, Rev KA

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 this manual for any restrictions associated with a safe installation.

 Before connecting a Field Communicator in an explosive atmosphere, ensure the instruments in the

loop are installed in accordance with intrinsically safe or non-incendive field wiring practices.

 In an explosion-proof/flameproof installation, do not remove the transmitter covers when power is

applied to the unit.

Process leaks may cause harm or result in death.

 Install and tighten process connectors before applying pressure.

Electrical shock can result in death or serious injury.

 Avoid contact with the leads and terminals. High voltage that may be present on leads can cause

electrical shock.

Title Page

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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 contains mechanical and electrical installation instructions, and field upgrade

options.

Section 3: Installation provides instruction on commissioning and operating Rosemount 3051

transmitters. Information on software functions, configuration parameters, and online variables is also included.

Section 4: Operation and Maintenance contains operation and maintenance techniques.

Section 5: Troubleshooting provides troubleshooting techniques for the most common operating

problems.

Appendix A: Specifications and Reference Data supplies reference and specification data, as well as

ordering information.

™

3051 Pressure Transmitter. The sections are organized as follows:

Introduction

May 2017

Appendix B: Product Certifications contains intrinsic safety approval information, European ATEX

directive information, and approval drawings.

1.2 Models covered

The following transmitters are covered by this manual:

Rosemount 3051C Coplanar™ pressure Transmitter

 Rosemount 3051CD Differential Pressure Transmitter

– Measures differential pressure up to 2000 psi (137,9 bar).

 Rosemount 3051CG Gage Pressure Transmitter

– Measures gage pressure up to 2000 psi (137,9 bar).

 Rosemount 3051CA Absolute Pressure Transmitter

– Measures absolute pressure up to 4000 psia (275,8 bar).

Rosemount 3051T In-Line pressure Transmitter

 Rosemount 3051T Gage and Absolute Pressure Transmitter

– Measures gage pressure up to 10000 psi (689,5 bar).

Rosemount 3051L Liquid Level Transmitter

– Provides precise level and specific gravity measurements up to 300 psi (20,7 bar) for a wide

variety of tank configurations.

Introduction

Note

For transmitters with F For transmitters with PROFIBUS® PA, see Rosemount 3051 Reference Manual.

OUNDATION

™

Fieldbus, see Rosemount 3051 Reference Manual.

Page 12

Introduction

May 2017

1.3 Product recycling/ disposal

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

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Introduction

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Section 2 Configuration

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3

Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4

Configuration data review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6

Field Communicator menu trees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8

Traditional Fast Key sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 12

Check output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 14

Basic setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 15

LCD display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 21

Detailed setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 23

Diagnostics and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 24

Advanced functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 26

Multidrop communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 29

Configuration

May 2017

2.1 Overview

This section contains information on commissioning and tasks that should be performed on the bench prior to installation.

Field Communicator and AMS Device Manager instructions are given to perform configuration functions. For convenience, Field Communicator Fast Key sequences are labeled “Fast Keys” for each software function below the appropriate headings.

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

Page 14

Configuration

May 2017

Reference Manual

00809-0100-4001, Rev KA

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.

2.3 Commissioning

Commissioning consists of testing the transmitter and verifying transmitter configuration data. The Rosemount Commissioning the transmitter on the bench before installation using a Field Communicator or AMS Device Manager ensures that all transmitter components are in working order.

To commission on the bench, required equipment includes a power supply, a milliamp meter, and a Field Communicator or AMS Device Manager. Wire equipment as shown in Figure 2-1 and Figure 2-2. To ensure successful communication, a resistance of at least 250 ohms must be present between the Field Communicator loop connection and the power supply. Connect the Field Communicator leads to the terminals labeled “COMM” on the terminal block.

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

When using a Field Communicator, any configuration changes made must be sent to the transmitter by using the Send key. AMS Device Manager configuration changes are implemented when the Apply button is clicked.

2.3.1 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. The Field Communicator or AMS Device Manager will prompt you to set the loop to manual when necessary. Acknowledging this prompt does not set the loop to manual. The prompt is only a reminder; set the loop to manual as a separate operation.

™

3051 Pressure Transmitters can be commissioned either before or after installation.

2.3.2 Wiring diagrams

Connect the equipment as shown in Figure 2-1 for 4–20 mA HART® or Figure 2-2 for 1-5 Vdc HART Low Power. To ensure successful communication, a resistance of at least 250 ohms must be present between the Field Communicator loop connection and the power supply. The Field Communicator or AMS Device Manager may be connected at “COMM” on the transmitter terminal block or across the load resistor.

Configuration

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Reference Manual

00809-0100-4001, Rev KA

Connecting across the “TEST” terminals will prevent successful communication for 4–20 mA HART output.

Turn on the Field Communicator by pressing the ON/OFF key or log into AMS Device Manager. The Field Communicator or AMS Device Manager will search for a HART-compatible device and indicate when the connection is made. If the Field Communicator or AMS Device Manager fail to connect, it indicates that no device was found. If this occurs, refer to Section 5: Troubleshooting.

Figure 2-1. Wiring (4–20 mA)

Configuration

May 2017

A. Current meter B. R

≥250Ω

C. 24 Vds supply

Figure 2-2. Wiring (Low-Power)

A. Voltmeter B. 6 - 14 Vdc supply

Config uration

Page 16

Configuration

May 2017

2.4 Configuration data review

Note

Information and procedures in this section that make use of Field Communicator Fast Key sequences and AMS Device Manager assume that the transmitter and communication equipment are connected, powered, and operating correctly.

The following is a list of factory default configurations. These can be reviewed by using the Field Communicator or AMS Device Manager.

Field Communicator

Reference Manual

00809-0100-4001, Rev KA

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

Enter the Fast Key sequence to view the configuration data.

Tra nsmitter mod el Typ e

Ta g Range

Date Descriptor

Message Minimum and maximum sensor limits

Minimum span Units

4 and 20 mA points Output (linear or sq. root)

Damping Alarm setting (high, low)

Security setting (on, off) Local zero/span keys (enabled, disabled)

Integral display Sensor fill

Isolator material Flange (type, material)

O-ring material Drain/Vent

Remote seal (type, fill fluid, isolator material, number) Transmitter S/N

Address Sensor S/N

1, 5

1, 7

AMS Device Manager

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

Configuration

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00809-0100-4001, Rev KA

2.5 Field Communicator

(Version 1.8)

2.5.1 Field Communicator user interface

Figure 2-3. Traditional Interface

Configuration

May 2017

The corresponding menu trees can be viewed on page 8 and page 9.

The Fast Key sequence can be viewed on page 12.

Figure 2-4. Device Dashboard

The corresponding menu trees can be viewed on page 10 through page 12.

Config uration

The Fast Key sequence can be viewed on page 14.

Page 18

Configuration

May 2017

2.6 Field Communicator menu trees

Figure 2-5. Rosemount 3051 Traditional HART Menu Tree For 4-20 Ma HART Output

Reference Manual

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Configuration

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Reference Manual

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Figure 2-6. Rosemount 3051 Traditional HART Menu Tree for 1-5 Vdc Low Power

Configuration

May 2017

Config uration

Page 20

Configuration

Home

1 Overview 2 Configure 3 Service Tools

Overview

1 Device Status 2 Comm Status 3 Pressure 4 Analog Output 5 Pressure URV 6 Pressure LRV 7 Device Information

Device Information

1 Identification 2 HART 3 Materials of Construction 4 RS Materials of Construction 5 Analog Alarm 6 Security

Identification

1 Tag 2 Model 3 Transmitter S/N 4 Date 5 Descriptor 6 Message

HART

1 Universal Revision 2 Field Device Revision 3 Hardware Revision 4 Software Revision

Materials of Construction

1 Sensor Config 2 Sensor Range 3 Upper Sensor Limits 4 Lower Sensor Limits 5 Isolator Material 6 Fill Fluid 7 Process Connection 8 Process Connection Matl 9 O-ring Material Drain/Vent Material

RS Materials of Construction

1 Number of Remote Seals 2 RS Seal 3 RS Fill Fluid 4 RS Isolator Material

Analog Alarm

1 Alarm Direction 2 High Alarm 3 High Saturation 4 Low Saturation 5 Low Alarm

Security

1 Write Protect Status 2 Local Zero/Span

May 2017

Figure 2-7. Overview

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Configuration

Page 21

Home

1 Overview 2 Configure 3 Service Tools

Configure

1 Guided Setup 2 Manual Setup

Guided Setup

1 Basic Setup 2 Zero 3 Configure Display

Manual Setup

1 Process Variables 2 Analog Output 3 Display 4 HART 5 Security 6 Device Information

Process Variables

1 Pressure Units 2 Damping 3 Transfer Function 4 Temperature Unit 5 Pressure 6 Sensor Temperature

Analog Output

1 Upper Range Value 2 Lower Range Value 3 Analog Output 4 Percent of Range 5 Upper Sensor Limits 6 Lower Sensor Limits 7 Minimum Span 8 Range by Applying Pressure

Display

1 Display Option 2 Decimal Places 3 Upper Range Value 4 Lower Range Value 5 Transfer Function 6 Units

HART

1 Burst Mode 2 Burst Option 3 Polling Address

Device Information

1 Identification 2 Flange 3 Remote Seal

Security

1 Write Protect Status 2 Local Zero/Span

Burst Option

PV % range/current Process Vars/current Process Variables

Tag, Message, Descriptor, Date, Pressure Units, Temperature Units, Damping, URV, LRV

Identification

1 Tag 2 Model 3 Transmitter S/N 4 Date 5 Descriptor 6 Message

Flange

1 Process Connection 2 Process Conn matl 3 O-ring Material 4 Drain/Vent Material

Remote Seal

1 Number of Remote Seals 2 RS Seal 3 RS Fill Fluid 4 RS Isolator Material

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00809-0100-4001, Rev KA

Figure 2-8. Configure

Configuration

May 2017

Config uration

Page 22

Configuration

Home

1 Overview 2 Configure 3 Service Tools

Service Tools

1 Alerts 2 Variables 3 Trends 4 Maintenance 5 Simulate

Variables

1 Variable Summary 2 Pressure 3 Analog Output 4 Sensor Temperature

Trends

1 Pressure 2 Sensor Temperature

Maintenance

1 Pressure Calibration 2 Analog Calibration 3 Recall Factory Calibration

Simulate

1 Loop Test

Alerts

1 Refresh Alerts

Only Active Alerts show up here

Trend Graph

Pressure Calibration

1 Upper 2 Lower 3 Zero 4 Upper Cal Pt 5 Lower Cal Pt 6 Upper Sensor Limits 7 Lower Sensor Limits

May 2017

Figure 2-9. Service Tools

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00809-0100-4001, Rev KA

2.7 Traditional Fast Key sequence

A check (⻫) indicates the basic configuration parameters. At minimum, these parameters should be verified as part of the configuration and startup procedure.

Table 2-1. Traditional Fast Key Sequence

Function 4–20 mA HART 1–5 Vdc HART low power

⻫ Alarm and Saturation Levels 1, 4, 2, 7 N/A

Analog Output Alarm Type 1, 4, 3, 2, 4 1, 4, 3, 2, 4

Burst Mode Control 1, 4, 3, 3, 3 1, 4, 3, 3, 3

Burst Operation 1, 4, 3, 3, 4 1, 4, 3, 3, 4

Custom Meter Configuration 1, 3, 7, 2 N/A

Custom Meter Value 1, 4, 3, 4, 3 N/A

Damping 1, 3, 6 1, 3, 6

⻫

Date 1, 3, 4, 1 1, 3, 4, 1

Descriptor 1, 3, 4, 2 1, 3, 4, 2

Configuration

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Reference Manual

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Table 2-1. Traditional Fast Key Sequence

Function 4–20 mA HART 1–5 Vdc HART low power

Digital To Analog Trim (4-20 mA Output) 1, 2, 3, 2, 1 1, 2, 3, 2, 1

Disable Local Span/Zero Adjustment 1, 4, 4, 1, 7 1, 4, 4, 1, 7

Field Device Information 1, 4, 4, 1 1, 4, 4, 1

Full Trim 1, 2, 3, 3 1, 2, 3, 3

Keypad Input – Rerange 1, 2, 3, 1, 1 1, 2, 3, 1, 1

Local Zero and Span Control 1, 4, 4, 1, 7 1, 4, 4, 1, 7

Loop Test 1, 2, 2 1, 2, 2

Lower Sensor Trim 1, 2, 3, 3, 2 1, 2, 3, 3, 2

Message 1, 3, 4, 3 1, 3, 4, 3

Meter Options 1, 4, 3, 4 N/A

Number of Requested Preambles 1, 4, 3, 3, 2 1, 4, 3, 3, 2

Poll Address 1, 4, 3, 3, 1 1, 4, 3, 3, 1

Configuration

May 2017

Poll a Multidropped Transmitter Left Arrow, 4, 1, 1 Left Arrow, 4, 1, 1

Range Values 1, 3, 3 1, 3, 3

⻫

Rerange 1, 2, 3, 1 1, 2, 3, 1

Scaled D/A Trim (4–20 mA Output) 1, 2, 3, 2, 2 1, 2, 3, 2, 2

Self Test (Transmitter) 1, 2, 1, 1 1, 2, 1, 1

Sensor Info 1, 4, 4, 2 1, 4, 4, 2

Sensor Temperature 1, 1, 4 1, 1, 4

Sensor Trim Points 1, 2, 3, 3, 4 1, 2, 3, 3, 4

Status 1, 2, 1, 2 1, 2, 1, 2

⻫

Ta g 1, 3, 1 1, 3, 1

Transfer Function (Setting Output Type) 1, 3, 5 1, 3, 5

⻫

Transmitter Security (Write Protect) 1, 3, 4, 4 1, 3, 4, 4

Trim Analog Output 1, 2, 3, 2 1, 2, 3, 2

Units (Process Variable) 1, 3, 2 1, 3, 2

⻫

Upper Sensor Trim 1, 2, 3, 3, 3 1, 2, 3, 3, 3

Zero Trim 1, 2, 3, 3, 1 1, 2, 3, 3, 1

Config uration

Page 24

Configuration

May 2017

Reference Manual

00809-0100-4001, Rev KA

Table 2-2. Device Dashboard Fast Key Sequence

Function 4–20 mA HART

Alarm and saturation levels 1, 7, 5

Analog output alarm type 1, 7, 5

Burst mode control 2, 2, 4, 1

Burst option 2, 2, 4, 2

Custom display configuration 2, 2, 3

Damping 2, 2, 1, 2

Date 2, 2, 6, 1, 4

Descriptor 2, 2, 6, 1, 5

Digital to analog trim (4 - 20 mA output) 3, 4, 2

Disable zero and span adjustment 2, 2, 5, 2

Field device information 2, 2, 6

Loop test 3, 5, 1

Lower sensor trim 3, 4, 1, 2

Message 2, 2, 6, 1, 6

Poll address 2, 2, 4, 3

Range values 1, 5

Rerange with keypad 1, 5

Scaled D/A trim (4–20 mA output) 3, 4, 2

Sensor temperature/trend 3, 3, 2

Ta g 2, 2, 6, 1, 1

Tra nsfer func tio n 2, 2, 1, 3

Transmitter security (write protect) 2, 2, 5, 1

Units 2, 2, 1, 1

Upper sensor trim 3, 4, 1, 1

Zero trim 3, 4, 1, 3

2.8 Check output

Before performing other transmitter on-line operations, review the digital output parameters to ensure that the transmitter is operating properly and is configured to the appropriate process variables.

Configuration

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2.8.1 Process variables

The process variables for the Rosemount 3051 provide transmitter output, and are continuously updated. The pressure reading in both engineering units and percent of range will continue to track with pressures outside of the defined range from the lower to the upper range limit of the sensor module.

Field Communicator

Configuration

May 2017

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

The process variable menu displays the following process variables:

 Pressure  Percent of range  Analog output

AMS Device Manager

Right click on the device and select Process Variables... from the menu.The Process Variable screen displays the following process variables:

 Pressure  Percent of range  Analog output

2.8.2 Sensor temperature

The Rosemount 3051 contains a temperature sensor near the pressure sensor in the sensor module. When reading this temperature, keep in mind the sensor is not a process temperature reading.

Field Communicator

1, 1

3, 2

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

Enter the Fast Key sequence “Sensor Temperature” to view the sensor temperature reading.

AMS Device Manager

Right click on the device and select Process Variables... from the menu. Snsr Temp is the sensor temperature reading.

2.9 Basic setup

2.9.1 Set process variable units

The PV Unit command sets the process variable units to allow you to monitor your process using the appropriate units of measure.

Config uration

1, 1, 4

3, 2, 4

Page 26

Configuration

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Reference Manual

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Field Communicator

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

Enter the Fast Key sequence “Set Process Variable Units.” Select from the following engineering units:

 inH

 inHg  mbar  atm

 ftH

 mmH

 mmHg  Pa

 psi  kPa

O  bar  torr

O  g/cm

O  kg/cm

AMS Device Manager

Right click on the device and select Configure from the menu. In the Basic Setup tab, select Unit from the drop down menu to select units.

2.9.2 Set output (transfer function)

The Rosemount 3051 has two output settings: linear and square root. Activate the square root output option to make analog output proportional to flow. As input approaches zero, the Rosemount 3051 automatically switches to linear output in order to ensure a more smooth, stable output near zero (see

Figure 2-10).

1, 3, 2

2, 2, 1, 1



inH2O at 4 °C



mmH2O at 4 °C

For 4–20 mA HART output, the slope of the curve is unity (y = x) from 0 to 0.6 percent of the ranged pressure input. This allows accurate calibration near zero. Greater slopes would cause large changes in output (for small changes at input). From 0.6 to 0.8 percent, curve slope equals 42 (y = 42x) to achieve continuous transition from linear to square root at the transition point.

Field Communicator

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

1, 3, 5

2, 2, 1, 3

AMS Device Manager

1. Riht click on the device and select Configure from the menu.

2. In the Basic Setup tab, use Xfer fnctn drop down menu to select output, click Apply.

3. After carefully reading the warning provided, select yes.

Configuration

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Reference Manual

Sq. Root

Curve

Tra nsitio n Po int

Linear Section

Slope=1

Slope=42

Tra nsi tion Point

Sq. Root Curve

Full Scale

Flow (%)

Full Scale

Output

(mA dc)

00809-0100-4001, Rev KA

Figure 2-10. 4-20 mA HART Square Root Output Transition Point

Configuration

May 2017

Note

For a flow turndown of greater than 10:1 it is not recommended to perform a square root extraction in the transmitter. Instead, perform the square root extraction in the system.

2.9.3 Rerange

The Range Values command sets each of the lower and upper range analog values (4 and 20 mA points and 1 and 5 Vdc points) to a pressure. The lower range point represents 0 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 & sensor limits, refer to “Range and sensor limits” on page 93.

Note

Transmitters are shipped from Emerson (zero to upper range limit).

Note

Regardless of the range points, the Rosemount 3051 will measure and report all readings within the digital limits of the sensor. For example, if the 4 and 20 mA points are set to 0 and 10 inH transmitter detects a pressure of 25 inH reading.

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 with a Field Communicator or AMS Device Manager only.  Rerange with a pressure input source and a Field Communicator or AMS Device Manager.  Rerange with a pressure input source and the local zero and span buttons (option D4).

™

fully calibrated per request or by the factory default of full scale

O, and the

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

Config uration

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Configuration

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Reference Manual

00809-0100-4001, Rev KA

Note

If the transmitter security switch is ON, adjustments to the zero and span will not be able to be made. Refer to “Configure security and alarm” on page 44 for security information.

Rerange with a Field Communicator or AMS Device Manager only.

The easiest and most popular way to rerange is to use the Field Communicator only. This method changes the range values of the analog 4 and 20 mA points (1 and 5 Vdc points) independently without a pressure input. This means that when you change either the 4 or 20 mA setting, you also change the span.

An example for the 4–20 mA HART output:

If the transmitter is ranged so that

4 mA = 0 inH 20 mA = 100 inH

and you change the 4 mA setting to 50 inH

4 mA = 50 inH 20 mA = 100 inH

Note that the span was also changed from 100 inH 100 inH

O, and

O using the communicator only, the new settings are:

O, and

O to 50 inH2O, while the 20 mA setpoint remained at

To obtain reverse output, simply set the 4 mA point at a greater numerical value than the 20 mA point. Using the above example, setting the 4 mA point at 100 inH 0 inH

O will result in reverse output.

O and the 20 mA point at

Field Communicator

Traditional 4-20 mA Fast Keys

Traditional 1-5 Vdc Fast Keys

Device Dashboard Fast Keys

From the HOME screen, enter the Fast Key sequence “Rerange with a Communicator Only.”

1, 2, 3, 1

2, 2, 2, 1

AMS Device Manager

Right click on the device and select Configure from the menu. In the Basic Setup tab, locate the Analog Output box and perform the following procedure:

1. Enter the lower range value (LRV) and the upper range value (URV) in the fields provided. Select Apply.

2. After carefully reading the warning provided, select yes.

Rerange with a pressure input source and a Field Communicator or AMS Device Manager

Reranging using the Field Communicator and applied pressure is a way of reranging the transmitter when specific 4 and 20 mA points (1 and 5 Vdc points) are not calculated.

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Note

The span is maintained when the 4 mA point (1 Vdc point) is set. The span changes when the 20 mA point (5 Vdc 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.

Field Communicator

Configuration

May 2017

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

From the HOME screen, enter the Fast Key sequence Rerange with a pressure input source and a Field

Communicator or AMS Device Manager .

1, 2, 3, 1, 2

2, 2, 2, 8

AMS Device Manager

1. Right click on the device, select Calibrate, then Apply values from the menu.

2. Select Next after the control loop is set to manual.

3. From the Apply Values menu, follow the on-line instructions to configure lower and upper range values.

4. Select Exit to leave the Apply Values screen.

5. Select Next to acknowledge the loop can be returned to automatic control.

6. Select Finish to acknowledge the method is complete.

Rerange with a pressure input source and the local zero and span buttons (option D4)

Reranging using the local zero and span adjustments (see Figure 2-11 on page 20) and a pressure source is a way of reranging the transmitter when specific 4 and 20 mA (1 and 5 Vdc) points are not known and a communicator is not available.

Config uration

Note

When you set the 4 mA (1 Vdc) point the span is maintained; when you set the 20 mA (5 Vdc) point the span changes. If you set the lower range point 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.

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

1. Loosen the screw holding the certifications label on the top of the transmitter housing. Slide the label to expose the zero and span buttons. See Figure 2-11.

2. Apply the desired 4 mA (1 Vdc) pressure value to the transmitter. Push and hold the zero adjustment button for at least two seconds but no longer than 10 seconds.

3. Apply the desired 20 mA (5 Vdc) pressure value to the transmitter. Push and hold the span adjustment button for at least two seconds but no longer than 10 seconds.

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00809-0100-4001, Rev KA

Figure 2-11. Zero and Span Button

A. Span and zero adjustment buttons

Note

2.9.4 Damping

The “Damp” command introduces a delay in the micro-processing which increases the response time of the transmitter; smoothing 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 default damping value is 0.4 seconds and it can be set to any of ten pre-configured damping values between 0 and 25.6 seconds. See list below.

 0.00 second  0.05 second  0.10 second

 0.20 second  0.40 second  0.80 second

 1.60 seconds  3.20 seconds  6.40 seconds

 12.8 seconds  25.6 seconds

The current damping value can be determined by executing the Field Communicator Fast Keys or going to Configure in AMS Device Manager.

Field Communicator

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

AMS Device Manager

1, 3, 6

2, 2, 1, 2

1. Right click on the device and select Configure from the menu.

2. In the Basic Setup tab, enter the damping value in the Damp field, select Apply.

3. After carefully reading the warning provided, select yes.

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2.10 LCD display

The LCD display connects directly to the interface board which maintains direct access to the signal terminals. The display indicates output and abbreviated diagnostic messages. A display cover is provided to accommodate the display.

For 4–20 mA HART output, the LCD display features a two-line display. The first line of five characters displays the actual measured value, the second line of six characters displays the engineering units. The LCD diplay can also show diagnostic messages. Refer to Figure 2-12.

For 1–5 Vdc HART Low Power output, the LCD display features a single-line display with four characters that display the actual value. The LCD display can also show diagnostic messages. Refer to Figure 2-12.

Figure 2-12. LCD Display

4–20 mA HART 1–5 Vdc HART Low Power

Configuration

May 2017

2.10.1 LCD display configuration for 4–20 mA HART only

The factory default alternates are between Engineering Units and % of Range. The LCD Display Configuration command allows customization of the LCD display to suit application requirements. The LCD display will alternate between the selected items

 Eng. Units only  Alternate Eng. Units and % of Range

 % of Range only  Alternate Eng. Units and Custom Display

 Custom Display only  Alternate % of Range and Custom Display

Field Communicator

Traditional 4-20 mA Fast Keys

Device Dashboard Fast Keys

To change the standard default to one of the above options, follow these steps:

1. From the communicators main menu select 1: Device Setup, 3: Basic Setup,

7: Meter Options.

2. Select 1: Meter Type. Using the up or down arrows scroll up or down until the desired display has been highlighted. Press ENTER, SEND, and HOME.

Config uration

1, 3, 7

2, 2, 3

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Configuration

See “Safety messages” on page 3 for complete warning information.

May 2017

00809-0100-4001, Rev KA

AMS Device Manager

1. Right click on the device and select Configuration Properties from the menu.

2. In the Local Display tab, locate the Meter Type area. Select the desired options to suit your application needs, select Apply.

3. An Apply Parameter Modification screen appears, enter desired information and select OK.

4. After carefully reading the warning provided, select OK.

2.10.2 Custom display configuration 4–20 mA HART only

The user-configurable scale is a feature that enables the LCD display to show flow, level, or custom pressure units. With this feature you can define the decimal point position, the upper range value, the lower range value, the engineering units, and the transfer function.The display can be configured using a Field Communicator or AMS Device Manager.

The user-configurable scale feature can define:

 decimal point position  upper range values  lower range values  engineering units  transfer function

Reference Manual

To configure the display with a Field Communicator, perform the following procedure:

1. Change the Meter Type to “Custom Meter” by using the Fast Key sequence under “LCD display

configuration for 4–20 mA HART only” on page 21.

2. Next from the ONLINE screen, Select 1: Device Setup, 3: Basic Setup, 7: Meter Options, 2: Meter Options, 2: Custom Meter Setup.

3. To specify decimal point position:

a. Select 1: Sel dec pt pos. Select the decimal point representation that will provide the most

accurate output for your application. For example, when outputting between zero and 75 GPM, select XX.XXX or use the decimal point examples below:

XXXXX XXXX.X XXX.XX XX.XXX X.XXXX

Note

Make sure the selection has been sent and the decimal point has changed before proceeding to the next step.

b. Select SEND.

4. To specify a custom upper range value: a. Select 2: CM Upper Value. Type the value that you want the transmitter to read at the 20 mA

point.

b. Select SEND.

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5. To specify a custom lower range value: a. Select 3: CM Lower Value. Type the value that you want the transmitter to read at the 4 mA

point.

b. Select SEND.

6. To define custom units: a. Select 4: CM Units. Enter the custom units (five characters maximum) to show on LCD display. b. Select SEND.

7. To select the transmitter transfer function for the display: a. Select 5: CM xfer fnct. Enter the transmitter transfer function for the display. Select sq root to

display flow units. The custom meter transfer function is independent of the analog output transfer function.

8. Select SEND to upload the configuration to the transmitter.

2.11 Detailed setup

2.11.1 Failure mode alarm and saturation

Configuration

May 2017

The Rosemount 3051 Transmitters automatically and continuously perform self-diagnostic routines. If the self-diagnostic routines detect a failure, the transmitter drives its output outside of the normal saturation values. The transmitter will drive its output low or high based on the position of the failure mode alarm jumper. See Ta bl e 2 - 3, Tab l e 2 -4 , and Ta b le 2- 5 for failure mode and saturation output levels. To select alarm position, see “Configure security and alarm” on page 44.

Table 2-3. 4–20 mA HART Alarm and Saturation Values

Level 4–20 mA saturation 4–20 mA alarm

Low 3.9 mA ≤ 3.75 mA

High 20.8 mA ≥ 21.75 mA

Table 2-4. NAMUR-Compliant Alarm and Saturation Values

Level 4–20 mA saturation 4–20 mA alarm

Low 3.8 mA ≤ 3.6 mA

High 20.5 mA ≥ 22.5 mA

Table 2-5. 1–5 Vdc HART Low-Power Alarm and Saturation Values

Level 1–5 V saturation 1–5 V alarm

Config uration

Low 0.97 V ≤ 0.95 V

High 5.20 V ≥ 5.4 V

Alarm level values will be affected by analog trim. Refer to “Digital-to-Analog trim” on page 69.

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Configuration

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Note

When a transmitter is in an alarm condition, the Field Communicator indicates the analog output the transmitter would drive if the alarm condition did not exist. The transmitter will alarm high in the event of failure if the alarm jumper is removed.

2.11.2 Alarm and saturation levels for burst mode

Transmitters set to burst mode handle saturation and alarm conditions differently.

Alarm conditions

 Analog output switches to alarm value.  Primary variable is burst with a status bit set.  Percent of range follows primary variable .  Temperature is burst with a status bit set.

Saturation

 Analog output switches to saturation value.  Primary variable is burst normally.  Temperature is burst normally.

Reference Manual

00809-0100-4001, Rev KA

2.11.3 Alarm and saturation values for multidrop mode

Transmitters set to multidrop mode handle saturation and alarm conditions differently.

Alarm conditions

 Primary variable is sent with a status bit set.  Percent of range follows primary variable .  Temperature is sent with a status bit set.

Saturation

 Primary variable is sent normally.  Temperature is sent normally.

2.11.4 Alarm level verification

If the transmitter electronics board, sensor module, or LCD display is repaired or replaced, verify the transmitter alarm level before returning the transmitter to service. This feature is also useful in testing the reaction of the control system to a transmitter in an alarm state. To verify the transmitter alarm values, perform a loop test and set the transmitter output to the alarm value (see Tables 2-3, 2-4, and 2-5 on page 23, and “Loop test” on page 24).

2.12 Diagnostics and service

Diagnostics and service functions listed below are primarily for use after field installation. The Loop Test feature is designed to verify proper loop wiring and transmitter output.

2.12.1 Loop test

The 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.

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Field Communicator

Configuration

May 2017

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

To initiate a loop test, perform the following procedure:

1. For 4–20 mA HART output, 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 Vdc Low Power HART output, connect a reference meter to the V

2. From the HOME screen, enter the Fast Key sequence “Loop Test” to verify the output of the

transmitter.

3. Select OK after the control loop is set to manual (see “Setting the loop to manual” on page 4).

4. Select a discrete milliamp level for the transmitter to output. At the CHOOSE ANALOG OUTPUT prompt

select 1: 4mA (1 Vdc), select 2: 20mA (5 Vdc), or select 3: “Other” to manually input a value.

a. If you are performing a loop test to verif y the output of a transmitter, enter a value between 4 and

20 mA (1 and 5 Vdc).

b. If you are performing a loop test to verify alarm levels, enter the value representing an alarm state

(see Tables 2-3, 2-4, and 2-5 on page 23).

5. Check that the reference meter displays the commanded output value. a. If the values match, the transmitter and the loop are configured and functioning properly. b. If the values do not match, the meter may be attached to the wrong loop, there may be a fault in

the wiring or power supply, the transmitter may require an output trim, or the reference meter may be malfunctioning.

1, 2, 2

3, 5, 1

terminal.

out

Config uration

After completing the test procedure, the display returns to the Loop Test screen to select another output value or to end loop testing.

AMS Device Manager

1. Right click on the device and select Diagnostics and Test, then Loop Test from the menu.

2. For 4-20 mA HART output, 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 Vdc Low Power HART output, connect a reference meter to the V

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

4. Select desired analog output level. Select Next.

5. Select Next to acknowledge output being set to desired level.

6. Check that the reference meter displays the commanded output value. a. If the values match, the transmitter and the loop are configured and functioning properly. b. If the values do not match, the meter may be attached to the wrong loop, there may be a fault in

the wiring or power supply, the transmitter may require an output trim, or the reference meter may be malfunctioning.

terminal.

out

Page 36

Configuration

May 2017

After completing the test procedure, the display returns to the Loop Test screen to choose another output value or to end loop testing.

7. Select End and click Next to end loop testing.

8. Select Next to acknowledge the loop can be returned to automatic control.

9. Select Finish to acknowledge the method is complete.

2.13 Advanced functions

2.13.1 Saving, recalling, and cloning configuration data

Use the cloning feature of the Field Communicator or the AMS Device Manager “User Configuration” feature to configure several Rosemount 3051 Transmitters similarly. Cloning involves configuring a transmitter, saving the configuration data, then sending a copy of the data to a separate transmitter. Several possible procedures exist when saving, recalling, and cloning configuration data. For complete instructions refer to the Field Communicator Reference Manual One common method is as follows:

or AMS Device Manager online guides.

Reference Manual

00809-0100-4001, Rev KA

Field Communicator

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

1. Completely configure the first transmitter.

2. Save the configuration data: a. Select SAVE from the Field Communicator HOME/ONLINE screen. b. Ensure that the location to which the data will be saved is set to MODULE. If it is not, select

1: Location to set the save location to MODULE. c. Select 2: Name, to name the configuration data. The default is the transmitter tag number. d. Ensure that the data type is set to STANDARD. If the data type is NOT

Typ e to set the data type to STANDARD. e. Select SAVE.

3. Connect and power the receiving transmitter and Field Communicator.

4. Select the back arrow from the HOME/ONLINE screen. The Field Communicator menu appears.

5. Select 1: Offline, 2: Saved Configuration, 1: Module Contents to reach the MODULE CONTENTS menu.

6. Use the DOWN ARROW to scroll through the list of configurations in the memory module, and use the RIGHT ARROW to select and retrieve the required configuration.

left arrow, 1, 2

3, 4, 3

STANDARD, select 3: Data

7. Select 1: Edit.

8. Select 1: Mark All.

9. Select Save.

10.Use the DOWN ARROW to scroll through the list of configurations in the memory module, and use the RIGHT ARROW to select the configuration again.

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11.Select 3: Send to download the configuration to the transmitter.

12.Select OK after the control loop is set to manual.

13.After the configuration has been sent, select OK to acknowledge that the loop can be returned to automatic control.

When finished, the Field Communicator informs you of the status. Repeat steps 3 through 13 to configure another transmitter.

Note

The transmitter receiving cloned data must have the same software version (or later) as the original transmitter.

AMS Device Manager creating a reusable copy

To create a reusable copy of a configuration perform the following procedure:

1. Completely configure the first transmitter.

2. Select View then User Configuration View from the menu bar (or click the toolbar button).

Configuration

May 2017

3. In the User Configuration window, right click and select New from the context menu.

4. In the New window, select a device from the list of templates shown, and select OK.

5. The template is copied into the User Configurations window, with the tag name highlighted; rename it as appropriate and press Enter.

Note

A device icon can also be copied by dragging and dropping a device template or any other device icon from AMS Device Manager Explorer or Device Connection View into the User Configurations window.

The Compare Configurations window appears, showing the current values of the copied device on one side and mostly blank fields on the other (User Configuration) side.

6. Transfer values from the current configuration to the user configuration as appropriate or enter values by typing the values into the available fields.

7. Select Apply to apply the values, or select OK to apply the values and close the window.

AMS Device Manager applying a user configuration

Any amount of user configurations can be created for the application. They can also be saved, and applied to connected devices or to devices in the device list or plant database.

Note

When using AMS Device Manager Revision 6.0 or later, the device to which the user configuration is applied, must be the same model type as the one created in the user configuration. When using AMS Device Manager Revision 5.0 or earlier, the same model type and revision number are required.

Config uration

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Configuration

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To apply a user configuration perform the following procedure:

1. Select the desired user configuration in the User Configurations window.

2. Drag the icon onto a like device in AMS Device Manager Explorer or Device Connection View. The Compare Configurations window opens, showing the parameters of the target device on one side and the parameters of the user configuration on the other.

3. Transfer parameters from the user configuration to the target device as desired. Click OK to apply the configuration and close the window.

2.13.2 Burst mode

When configured for burst mode, the Rosemount 3051 provides faster digital communication from the transmitter to the control system by eliminating the time required for the control system to request information from the transmitter. Burst mode is compatible with the analog signal. Because the HART protocol 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, and/or analog output), and does not affect the way other transmitter data is accessed.

Access to information other than dynamic transmitter data is obtained through the normal poll/response method of HART 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. The transmitter will receive the request, process the response message, and then continue “bursting” the data approximately three times per second.

Reference Manual

00809-0100-4001, Rev KA

Field Communicator

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

1, 4, 3, 3, 3

2, 2, 4, 1

AMS Device Manager

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

1. In the HART tab, use the drop down menu to select “Burst Mode ON or OFF.” For “Burst option” select the desired properties from the drop down menu. Burst options are as follows:

– PV – % range/current – Process vars/crnt – Process variables

2. After selecting options click Apply.

3. After carefully reading the warning provided, select yes.

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2.14 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. With smart communications protocol, up to fifteen transmitters can be connected on a single twisted pair of wires, or over leased phone lines.

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 (1–15) 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 2-13 shows a typical multidrop network. This figure is not intended as an installation diagram.

Note

A transmitter in multidrop mode has the analog output fixed at 4 mA. If an LCD display is installed to a transmitter in multidrop mode, it will alternate the display between “current fixed” and the specified LCD display output(s).

Configuration

May 2017

Figure 2-13. Typical Multidrop Network

The Rosemount 3051 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 one to 15. 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.

Config uration

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Configuration

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2.15 Changing a transmitter address

To activate multidrop communication, the transmitter poll address must be assigned a number from one to 15, and each transmitter in a multidropped loop must have a unique poll address.

Field Communicator

Reference Manual

00809-0100-4001, Rev KA

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

1, 4, 3, 3, 1

1, 2

AMS Device Manager

Right click on the device and select Configuration Properties from the menu.

1. In the HART tab, in the ID box, enter poll address located in the Poll addr box, select Apply.

2. After carefully reading the warning provided, select yes.

2.15.1 Communicating with a multidropped transmitter

Field Communicator

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

To communicate with a multidropped transmitter, configure the Field Communicator to poll for a non-zero address.

1. From the HOME screen, enter the Fast Key sequence “Communicating with a Multidropped Tra n sm it ter .”

1, 4, 3, 3, 2

1, 2

2. On the polling menu, scroll down and select Digital Poll. In this mode, the Field Communicator automatically polls for devices at addresses 0–15 upon start up.

AMS Device Manager

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

2.15.2 Polling a multidropped transmitter

Polling a multidropped loop determines the model, address, and number of transmitters on the given loop.

Field Communicator

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

AMS device manager

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

Left arrow, 4, 1

1, 2

Configuration

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Section 3 Installation

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 31

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 31

General considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 32

Mechanical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 32

Draft range considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 33

Environmental considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 33

HART installation flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 34

Installation procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 35

Electrical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 46

Hazardous locations certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 51

Rosemount 305, 306, and 304 Manifolds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 51

Valve Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 58

Installation

May 2017

3.1 Overview

The information in this section covers installation considerations for the Rosemount™ 3051 Pressure Transmitter with HART transmitter to describe basic pipe-fitting and wiring procedures for initial installation. Dimensional drawings for each transmitter variation and mounting configuration are included on page 38.

protocols. A Quick Start Guide for HART protocol is shipped with every

3.2 Safety messages

Procedures and instructions in this section may require special precautions to ensure the safety of the personnel performing the operation. Information that raises potential safety issues is indicated by a

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

Explosions could result in death or serious injury.

 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.

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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.

Replacement equipment or spare parts not approved by Emerson the pressure retaining capabilities of the transmitter and may render the instrument dangerous.

 Use only bolts supplied or sold by Emerson as spare parts.  Refer to “Spare parts” on page 136 for a complete list of spare parts.

Improper assembly of manifolds to traditional flange can damage sensor module.

 For safe assembly of manifold to traditional flange, bolts must break back plane of flange web (i.e.,

bolt hole) but must not contact sensor module housing.

3.3 General considerations

Measurement accuracy depends upon proper installation of the transmitter and impulse piping. Mount the transmitter close to the process and use a minimum of piping to achieve best accuracy. 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.

Reference Manual

00809-0100-4001, Rev KA

™

for use as spare parts could reduce

Important

Install the enclosed pipe plug (found in the box) in unused conduit opening with a minimum of five threads engaged to comply with explosion-proof requirements.

Refer to Material Selection Consideration for Pressure Transmitters Technical Note compatibility considerations.

3.4 Mechanical considerations

Note

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

Note

When the transmitter is mounted on its side, position the coplanar flange to ensure proper venting or draining. Mount the flange as shown in Figure 3-8 on page 41, keeping drain/vent connections on the bottom for gas service and on the top for liquid service.

for material

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3.5 Draft range considerations

Installation

For the Rosemount 3051CD0 Draft Range Pressure Transmitter, it is best to mount the transmitter with the isolators parallel to the ground. Installing the transmitter in this way reduces oil head effect and provides for optimal temperature performance.

Be sure the transmitter is securely mounted. Tilting of the transmitter may cause a zero shift in the transmitter output.

Reducing process noise

There are two recommended methods of reducing process noise: output damping and, in gage applications, reference side filtering.

Output damping

The output damping for the Rosemount 3051CD0 is factory set to 3.2 seconds as a default. If the transmitter output is still noisy, increase the damping time. If faster response is needed, decrease the damping time. Damping adjustment information is available on page 20.

Installation

May 2017

Reference side filtering

In gage applications it is important to minimize fluctuations in atmospheric pressure to which the low side isolator is exposed.

One method of reducing fluctuations in atmospheric pressure is to attach a length of tubing to the reference side of the transmitter to act as a pressure buffer.

Another method is to plumb the reference side to a chamber that has a small vent to atmosphere. If multiple draft transmitters are being used in an application, the reference side of each device can be plumbed to a chamber to achieve a common gage reference.

3.6 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 Figure 2-12 on page 21 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.

Installation

Page 44

START HERE

Bench

Calibration?

Field Install

Set Units

(page 15)

Set Range Points

(page 17)

Set Output Type

(page 16)

Set Damping

(page 20)

Ver ify

Apply Pressure

Yes

Within

Specifications?

Yes

Refer to

Section 4: Operation

and Maintenance

Configure Security

and Alarm

(page 44)

Mount Transmitter

(page 35)

Wire Transmitter

(pages 47–53)

Power Transmitter

(page 48)

Check Process

Connection

(page 41)

Tri m Tra nsmitt er for

Mounting Effects

(page 6)

Done

Review Transmitter

Configuration

(page 6)

Confirm Transmitter

Configuration

(page 6)

Configure

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May 2017

3.7 HART installation flowchart

Figure 3-1. HART Flowchart

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3.8 Installation procedures

3.8.1 Mount the transmitter

For dimensional drawing information refer to Appendix A: Specifications and Reference Data on page 89.

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.

Note

Most transmitters are calibrated in the horizontal position. Mounting the transmitter in any other position will shift the zero point to the equivalent amount of liquid head pressure caused by the varied mounting position. To reset zero point, refer to “Sensor trim” on page 71.

Housing rotation

See “Housing rotation” on page 43.

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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. Three inches of clearance is required for cover removal if a meter is installed.

Cover installation

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

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

Protection ratings are required.

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

Type 4X, IP66, and IP68. Consult factory if other Ingress

Mounting brackets

Rosemount 3051Transmitters may be panel-mounted or pipe-mounted through an optional mounting bracket. Refer to Ta b l e 3- 1 for the complete offering and see Figure 3-2 through Figure 3-5 on pages 36 and 37 for dimensions and mounting configurations.

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Installation

2.8 (71)

3.4 (85)

May 2017

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Table 3-1. Rosemount 3051 Mounting Brackets

Process connections Mounting Materials

Option

code

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

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

Coplanar In-line Traditional

Pipe

mount

Panel

mount

Flat

panel

mount

bracket

SST

bracket

bolts

SST

bolts

Figure 3-2. Mounting Bracket Option Code B4

A. 5/16 ⫻ 11/2 bolts for panel mounting (not supplied)

/8–16 ⫻ 11/4 bolts for mounting to transmitter

Dimensions are in inches (millimeters)

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

3.75 (95)

1.63 (41)

4.09 (104)

2.73 (69)

2.81 (71)

Dimensions are in inches (millimeters).

4.97 (126)

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Reference Manual

3.75 (95)

1.63 (41)

4.09 (104)

2.81 (71)

4.5

(114)

2.125 (54)

2.81 (71)

8.00

(203)

1.625 (41)

00809-0100-4001, Rev KA

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

1.40

(36)

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May 2017

1.405 (35,7)

Dimensions are in inches (millimeters).

Flange bolts

B7M

316 B8M

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

660

CL A

F593_

The Rosemount 3051 can be shipped with a coplanar flange or a traditional flange installed with four

1.75-in. flange bolts. Mounting bolts and bolting configurations for the coplanar and traditional flanges can be found on page 39. Stainless steel bolts supplied by Emerson Process Management are coated with a lubricant to ease installation. Carbon steel bolts do not require lubrication. No additional lubricant should be applied when installing either type of bolt. Bolts supplied by Emerson are identified by their head markings:

Carbon Steel (CS) head markings

Stainless Steel (SST) head markings

(1)

Alloy K-500 head marking

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Installation

See “Safety messages” on page 31 for complete warning information.

1.50 (38) × 4

1.75 (44) × 4

May 2017

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Bolt installation

Only use bolts supplied with the Rosemount 3051 or sold by Emerson as spare parts for the 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 b le 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

CS-ASTM-A445 Standard 300 in-lb (34 N-m) 650 in-lb (73 N-m)

316 SST—Option L4 150 in-lb (17 N-m) 300 in-lb (34 N-m)

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

Alloy 400—Option L6 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).

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

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May 2017

Transmitter with flange bolts

Dimensions are in inches (millimeters).

Transmitter with flange adapters and

flange/adapter bolts

Description Qty Size in. (mm)

Differential pressure

Flange bolts 4 1.75 (44)

Flange/adapter bolts 4 2.88 (73)

Gage/absolute pressure

Flange bolts 4 1.75 (44)

Flange/adapter bolts 2 2.88 (73)

1. Rosemount 3051T transmitters are direct mount and do not require bolts for process connection.

3.8.2 Impulse piping

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.

(1)

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

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

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

module and flanges.

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

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

 Place taps to the side of the line to prevent sediment deposits on the transmitter’s process isolators.  Mount the transmitter beside or below the taps so gases can vent into the process line.  Mount drain/vent valve upward to allow gases to vent.

Gas flow measurement

 Place taps in the top or side of the line.  Mount the transmitter beside or above the taps so liquid will drain into the process line.

Steam flow measurement

 Place taps to the side of the line.  Mount the transmitter below the taps to ensure that the impulse piping will stay filled with

condensate.

 In steam service above 250 °F (121 °C), fill impulse lines with water to prevent steam from contacting

the transmitter directly and to ensure accurate measurement start-up.

Note

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

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Flow

00809-0100-4001, Rev KA

Figure 3-8. Installation Examples

Gas or liquid Gas Steam

Installation

May 2017

3.8.3 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

Rosemount 3051DP and GP process connections on the transmitter flanges are 1/4–18 NPT. Flange adapters are available with standard 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 101 for the distance between pressure connections. This distance may be varied ± 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 37 for torque specifications.

Whenever you remove flanges or adapters, visually inspect the PTFE O-rings. Replace with O-ring designed for Rosemount transmitter if there are any signs of damage, such as nicks or cuts. Undamaged O-rings may be reused. If you replace the O-rings, retorque the flange bolts after installation to compensate for cold flow. Refer to the process sensor body reassembly procedure in Section 5: Trouble-

shooting.

/2–14 NPT Class 2 connections. The flange adapters allow users to

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

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Installation

ROSEMOUNT 1151

ROSEMOUNT 3051S/3051/2051/3001/3095/2024

May 2017

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00809-0100-4001, Rev KA

O-rings

The two styles of Rosemount flange adapters (Rosemount 1151 and Rosemount 3051S/3051/2051/3095) each require a unique O-ring. Use only the O-ring designed for the corresponding flange adaptor.

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

A. Flange Adapter B. O-ring C. PTFE D. Elastomer

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

Note

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

3.8.4 Inline process connection

Inline gage transmitter orientation

The low side pressure port on the inline 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.

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

A. Low side pressure port (atmospheric reference)

Do not apply torque directly to the sensor module. Rotation between the sensor module and the process connection can damage the electronics. To avoid damage, apply torque only to the hex-shaped process connection.

Installation

May 2017

A. Sensor module B. Process connection

3.8.5 Housing rotation

The electronics housing can be rotated up to 180 degrees in either direction to improve field access, or to better view the optional LCD display. To rotate the housing, perform the following procedure:

1. Loosen the housing rotation set screw using a

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

3. Retighten the housing rotation set screw.

Figure 3-10. Housing Rotation

/64-in. hex wrench.

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

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Installation

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3.8.6 LCD display

Transmitters ordered with the LCD option are shipped with the display installed. Installing the display on an existing Rosemount 3051 Transmitter requires a small instrument screwdriver.

Figure 3-11. LCD Display

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

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3.8.7 Configure security and alarm

Security (write protect)

There are three security methods with the Rosemount 3051Transmitter:

1. Security jumper: prevents all writes to transmitter configuration.

2. Local keys (local zero and span) software lock out: prevents changes to transmitter range points via local zero and span adjustment keys. With local keys security enabled, changes to configuration are possible via HART.

3. Physical removal of local keys (local zero and span) magnetic buttons: removes ability to use local keys to make transmitter range point adjustments. With local keys security enabled, changes to configuration are possible via HART.

You can prevent changes to the transmitter configuration data with the write protection jumper. Security is controlled by the security (write protect) jumper located on the electronics board or LCD display. Position the jumper on the transmitter circuit board in the “ON” position to prevent accidental or deliberate change of configuration data.

If the transmitter write protection jumper is in the “ON” position, the transmitter will not accept any “writes” to its memory. Configuration changes, such as digital trim and reranging, cannot take place when the transmitter security is on.

Note

If the security jumper is not installed, the transmitter will continue to operate in the security OFF configuration.

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Configuring transmitter security and alarm jumper procedure

To reposition the jumpers, follow the procedure described below.

1. Do not remove the transmitter covers in explosive atmospheres when the circuit is live. If the transmitter is live, set the loop to manual and remove power.

2. Remove the housing cover opposite the field terminal side. Do not remove the transmitter covers in explosive atmospheres when the circuit is live.

3. Reposition the jumpers as desired.

–Figure3-12 shows the jumper positions for the 4-20 mA HART Transmitter. –Figure3-13 shows the jumper positions for the 1-5 HART Vdc Low Power Transmitter.

4. Reattach the transmitter cover. Always ensure a proper seal by installing the electronics housing covers so that metal contacts metal to meet explosion-proof requirements.

Figure 3-12. 4–20 mA HART Electronics Board

Without LCD display meter With LCD display

Installation

May 2017

A. Alarm B. Security

Figure 3-13. 1-5 Vdc HART Low Power Transmitter Electronics Boards

Without LCD display meter With LCD display

A. Alarm B. Security C. Jumper

D. Write protect ON E. Write protect OFF

Note

Security jumper not installed = not write protected Alarm jumper not installed = high alarm

Transmitter security

jumper positions

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Page 56

Installation

May 2017

3.9 Electrical considerations

Note

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

3.9.1 Conduit installation

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.

Recommended conduit connections are shown in Figure 3-14.

Figure 3-14. Conduit Installation Diagrams

Correct Correct Incorrect

Reference Manual

00809-0100-4001, Rev KA

A. Possible conduit line positions B. Sealing compound C. Conduit lines

3.9.2 Wiring

Do not connect the power signal wiring to the test terminals. Voltage may burn out the reverse-polarity protection diode in the test connection.

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).

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Reference Manual

See “Safety messages” on page 31 for complete warning information.

00809-0100-4001, Rev KA

Figure 3-15. 4–20 mA HART Wiring

A. Power supply B. RL ≥ 250Ω

Installation

May 2017

Figure 3-16. 1–5 Vdc Low Power Wiring

A. Voltmeter B. Power supply

Perform the following procedure to make wiring connections:

1. Remove the housing cover on terminal compartment side. Do not remove the cover in explosive 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 (+) and the negative lead to the terminal marked (pwr/comm-). Do not connect powered signal wiring to the test terminals. Power could damage the test diode.

For 1–5 Vdc HART Low Power output, connect the positive lead to the terminal marked (+ pwr) and the negative lead to the terminal marked (pwr-). Connect signal lead to V

/comm+.

out

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Installation

Voltage (Vdc)

Load (Ohms)

Operating

Regio n

1387

1000

500

10.5 20 30

42.4

May 2017

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3. Ensure full contact with Terminal Block screw and washer. When using a direct wiring method, wrap wire clockwise to ensure it is in place when tightening the terminal block screw.

Note

The use of a pin or ferrule wire terminal is not recommended as the connection may be more susceptible to loosening over time or under vibration.

4. Plug and seal unused conduit connection on the transmitter housing to avoid moisture accumulation in the terminal side. Install wiring with a drip loop. Arrange the drip loop so the bottom is lower than the conduit connections and the transmitter housing.

Power supply for 4-20 mA HART

Transmitter operates on 10.5 –42.4 Vdc. The dc power supply should provide power with less than two percent ripple.

Note

A minimum loop resistance of 250 ohms is required to communicate with a Field Communicator. If a single power supply is used to power more than one Rosemount 3051 Transmitter, the power supply used, and circuitry common to the transmitters, should not have more than 20 ohms of impedance at 1200 Hz.

Figure 3-17. Load Limitation

Maximum loop resistance = 43.5 * (Power supply voltage – 10.5)

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

The total resistance load is the sum of the resistance of the signal leads and the load resistance of the controller, indicator, and related pieces. Note that the resistance of intrinsic safety barriers, if used, must be included.

Power supply for 1–5 Vdc HART low power

Low power transmitters operate on 6–14 Vdc. The dc power supply should provide power with less than two percent ripple. The V

load should be 100 kΩ or greater.

out

3.9.3 Transient protection terminal block

The transmitter will 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.

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The transient protection terminal block can be ordered as an installed option (option code T1 in the transmitter model number) or as a spare part to retrofit existing Rosemount 3051 Transmitters in the field. See “Spare parts” on page 136 for spare part numbers. The lightning bolt symbol shown in

Figure 3-18 and Figure 3-19 identifies the transient protection terminal block.

Figure 3-18. 4–20 mA HART Wiring with Transient Protection

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A. Prower supply B. RL ≥ 250Ω

Figure 3-19. 1–5 Vdc Low Power Wiring with Transient Protection

A. Voltmeter B. Power supply

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Figure 3-20. Wiring Pair and Ground

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A. Minimize distance B. Trim shield and insulate C. Ground for transient protection D. Insulate shield E. Connect shield back to the power supply ground

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 page 50.

Do not run the transient protection ground wire with signal wiring as the ground wire may carry excessive current if a lightning strike occurs.

3.9.4 Grounding

Use the following techniques to properly ground the transmitter signal wiring and case:

Signal wiring

Do not run signal wiring in conduit or open trays with power wiring or near heavy electrical equipment. It is important that the instrument cable shield be:

 Trimmed close and insulated from touching the transmitter housing  Connected to the next shield if cable is routed through a junction box  Connected to a good earth ground at the power supply end

For 4–20 mA HART output, the signal wiring may be grounded at any one point on the signal loop or may be left ungrounded. The negative terminal of the power supply is a recommended grounding point.

For 1–5 Vdc HART Low Power output, the power wires may be grounded at only one point or left ungrounded. The negative terminal of the power supply is a recommended grounding point.

Transmitter case

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 3051 Transmitters. Refer to Figure 3-21.

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Figure 3-21. Internal Ground Screw

A. Internal ground connection screw

Figure 3-22. External Ground Assembly

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May 2017

A. External ground assembly

Note

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

3.10 Hazardous locations certifications

Individual transmitters are clearly marked with a tag indicating the approvals they carry. Transmitters must be installed in accordance with all applicable codes and standards to maintain these certified ratings. Refer to Appendix B: Product Certifications for information on these approvals.

3.11 Rosemount 305, 306, and 304 Manifolds

The Rosemount 305 Integral Manifold is available in two designs: traditional and coplanar. The traditional 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 3051T In-Line Transmitters to provide block-and-bleed valve capabilities of up to 10000 psi (690 bar).

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Installation

See “Safety messages” on page 31 for complete warning information.

May 2017

Reference Manual

00809-0100-4001, Rev KA

Figure 3-23. Manifolds

Rosemount 3051C and 304 Conventional Rosemount 3051C and 305 Integral Coplanar

Rosemount 3051C and 305 Integral Traditional Rosemount 3051T and 306 In-Line

3.11.1 Rosemount 305 Integral Manifold installation procedure

To install a Rosemount 305 Integral Manifold to a Rosemount 3051 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.

2. Install the integral manifold on the sensor module. Use the four 2.25-in. manifold bolts for alignment. Finger tighten the bolts, then tighten the bolts incrementally in a cross pattern to final torque value. See “Flange bolts” on page 37 for complete bolt installation information and torque values. When fully tightened, the bolts should extend through the top of the sensor module housing.

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Reference Manual

Drain/Vent

valve

Drain/Vent

valve

Isolate (open)

Process

Equalize (closed)

00809-0100-4001, Rev KA

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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May 2017

3.11.2 Rosemount 306 Integral Manifold installation procedure

The Rosemount 306 Manifold is for use only with a Rosemount 3051T In-Line Transmitter.

Assemble the Rosemount 306 Manifold to the Rosemount 3051T In-Line Transmitter with a thread sealant.

3.11.3 Rosemount 304 Conventional Manifold installation procedure

To install a Rosemount 304 Conventional Manifold to a Rosemount 305T Transmitter:

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

2. Finger tighten the bolts, then tighten the bolts incrementally in a cross pattern to final torque value. See “Flange bolts” on page 37 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.

3.11.4 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 71.

Coplanar transmitters

3- 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.

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Installation

Drain/Vent

valve

Isolate (open)

Drain/Vent

valve

Isolate

(closed)

Process

Equalize

(closed)

Drain/Vent

valve

Drain/Vent

valve

Isolate (open)

Process

Equalize (closed)

May 2017

Reference Manual

00809-0100-4001, Rev KA

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

valve

Isolate

(open)

Drain/Vent

Equalize (closed)

Process

Equalize

(open)

Process

valve

Isolate

(closed)

Drain/Vent

valve

Isolate

(closed)

4. Finally, to return the transmitter to service, open

the low side isolate valve.

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Reference Manual

(Plugged)

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)

00809-0100-4001, Rev KA

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

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May 2017

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

2. Open the equalize valve on the high pressure

3. Open the equalize valve on the low pressure

Installation

(upstream) side of the transmitter.

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

(Plugged)

Equalize

(open)

Isolate (open)

Process ProcessDrain vent

Equalize

(open)

(closed)

(Plugged)

Isolate

(closed)

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Installation

(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)

Equalize

(closed)

Process ProcessDrain vent

(closed)

May 2017

Reference Manual

00809-0100-4001, Rev KA

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.

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 transmitter

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

Process

(open)

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Transmitter

Isolate

Vent

(closed)

Process

(open)

00809-0100-4001, Rev KA

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May 2017

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

(open)

Isolate

Process

(closed)

Transmitter

Vent

(closed)

Installation

Isolate

Process (closed)

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

service.

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Installation

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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.

Above steps can be repeated, if necessary. If the above procedure does not result in proper pressure retention, the complete manifold should be replaced.

Figure 3-24. Valve Components

/4 turn.

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

E. Packing adjuster F. Ja m n ut G. Packing follower

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ZERO

SUPRESSION

mA dc

540

900

inH2O

00809-0100-4001, Rev KA

3.12 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.

3.12.1 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 3-25 shows a liquid level measurement example.

3.12.2 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.

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May 2017

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.

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 3-25.

Figure 3-25. Liquid Level Measurement Example

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Installation

ZERO ELEVATION

H L

mA dc

-110-610

inH2O

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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 ⫻ 0.9 = 450 inH

e = (Y)(SG)

= 100 ⫻ 0.9 = 90 inH

Range = 90 to 540 inH

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 3-26.

Figure 3-26. 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.).

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Let z equal the vertical distance between the top of the liquid in the wet leg and the transmitter datum line (600-in.).

Let SG1 equal the specific gravity of the fluid (1.0). Let SG2 equal the specific gravity of the fluid in the wet leg (1.1). 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)(SG1)

e = (Y)(SG1)

s = (z)(SG2)

Range = e – s to h + e – s

= 500 ⫻ 1.0 = 500 inH

= 50 ⫻ 1.0 = 50 inH

= 600 ⫻ 1.1 = 660 inH

= 50 – 660 to 500 + 50 – 660 = –610 to –110 inH20

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May 2017

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 3-27 shows a bubbler liquid level measurement example.

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Installation

mA dc

inH2O

110

AIR

May 2017

Reference Manual

00809-0100-4001, Rev KA

Figure 3-27. 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 ⫻ 1.1 = 110 inH

Range = 0 to 110 inH

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Operation and Maintenance

Section 4 Operation and Maintenance

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 63

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 63

Calibration overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 64

Analog output trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 68

Sensor trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 71

4.1 Overview

This section contains information on calibrating and diagnostics messages on Rosemount™ 3051 Pressure Transmitters.

May 2017

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.

 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 Explosionproof/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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Operation and Maintenance

May 2017

4.3 Calibration overview

Calibration is defined as the process required to optimize transmitter accuracy over a specific range by adjusting the factory sensor characterization curve located in the microprocessor. Possible procedures are:

 Reranging: Setting the lower and upper range points (4 and 20 mA or 1 and 5 Vdc) points at required

pressures. Reranging does not change the factory sensor characterization curve. Refer to page 17.

 Analog output trim: Adjusts the transmitter’s analog characterization curve to match the plant

standard of the control loop. There are two types of digital-to-analog output trims. Refer to page 68.

– Digital-to-Analog output trim on 4–20 mA HART output (page 69) – Digital-to-Analog output trim on 4–20 mA HART output using other scale (page 70)

 Sensor trim: Adjusts the position of the factory sensor characterization curve due to a change in the

sensor characteristics over time or a change in test equipment. Trimming has two steps, zero and sensor trims. Refer to page 72 and page 73.

 Zero trim (page 72)  Sensor trim (page 73)

Figure 4-1 on page 65 illustrates Rosemount 3051 Transmitter data flow. Data flow can be summarized

in four major steps:

Reference Manual

00809-0100-4001, Rev KA

1. A change in pressure is measured by a change in the sensor output (sensor signal).

2. The sensor signal is converted to a digital format that is understood by the microprocessor

(Analog-to-Digital Signal Conversion). Sensor trim functions affect this value. Select these options to alter the digital signal on the LCD or Field Communicator.

3. Corrections are performed in the microprocessor to obtain a digital representation of the process

input (Digital PV).

4. The Digital PV is converted to an analog value (Digital-to-Analog signal conversion). Rerange and

analog trim functions affect this value. Select these options to change the range points (4–20 mA or 1–5 Vdc).

For a summary of recommended calibration procedures, refer to Table 4-1 on page 65. Also, Figure 4-1

on page 65 identifies the approximate transmitter location for each calibration task. Data flows from left

to right and a parameter change affects all values to the right of the changed parameter.

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SENSOR (Step

A/D

(Ste

p 2)

MICRO

(Step 3)

D/A

(Step 4)

00809-0100-4001, Rev KA

Figure 4-1. Transmitter Data Flow with Calibration Options

A. Pressure source B. Output: 100 inH C. Output 20.00 mA

Transmitter Ranged 0 to 100 inH

Operation and Maintenance

O (0 to 0,25 bar)

May 2017

Table 4-1. Recommended Calibration Tasks

Tra ns mitt er Bench calibration tasks Field calibration tasks

3051CD, 3051CG, 3051L, 3051TG, Range 1-4

3051CA, 3051TA, 3051TG, Range 5

1. Set output configuration parameters:

a. Set the range points.

b. Set the output units.

c. Set the output type.

d. Set the damping value.

2. Optional: Perform a sensor trim. (Accurate pressure source required.)

1. Set output configuration parameters:

a. Set the range points.

b. Set the output units.

c. Set the output type.

d. Set the damping value.

2. Optional: Perform a sensor trim if equipment available (accurate absolute pressure source required), otherwise perform the low trim value section of the sensor trim procedure.

1. Reconfigure parameters if necessary.

2. Zero trim the transmitter to compensate for mounting effects or static pressure effects.

3. Optional: Perform an analog output trim. (Accurate multimeter required)

1. Reconfigure parameters if necessary.

2. Perform low trim value section of the sensor trim procedure to correct for mounting position effects.

3. Optional: Perform an analog output trim (Accurate multimeter required)

Note

The Rosemount 3051has been carefully 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.

Operation and Maintenance

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Operation and Maintenance

ReferenceAccuracy()

TemperatureEffect()

StaticPressureEffect()

0.0125 UR L×() Span

------------------------------ ------------ 0.0625+





% per 50 °F 0.0833% of span±=±

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

Stability

0.0125 UR L×() Span

------------------------------ ------------ % of span for 5 years 0.0035% of span per month±=±=

Cal. Freq.

Req. Performance TPE–()

Stability per Month

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

0.30% 0.117 %–()

0.0035%

------------------------------ ------------- -----52()months===

May 2017

Note

A Field Communicator is required for all sensor and output trim procedures. Rosemount 3051C Range 4 and Range 5 Transmitters require a special calibration procedure when used in differential pressure applications under high static line pressure (see“Select Finish to acknowledge the method is complete.”

on page 74).

4.3.1 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.

Reference Manual

00809-0100-4001, Rev KA

Sample calculation for a standard Rosemount 3051C

Step 1: Determine the performance required for your application.

Required performance: 0.30% of span

Step 2: Determine the operating conditions.

Transmitter: Rosemount 3051CD, 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)

Step 3: Calculate total probable error (TPE).

TPE = = 0.117% of span

Where:

Reference accuracy = ± 0.065% of span

Ambient temperature effect =

(1)

Span static pressure effect

O (374 mbar)

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

Step 4: Calculate the stability per month.

Step 5: Calculate calibration frequency.

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Reference Manual

ReferenceAccuracy()

TemperatureEffect()

StaticPressureEffect()

0.0125 UR L× Span

------------------------------- ------ 0.0625+





% 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 URL×() Span

-------------------------------------- % o f s p an fo r 5 y ea rs 0 . 0 0 35 % o f sp a n p e r m on t h±=±=

Cal. Freq.

Req. Performance TPE–()

Stability per Month

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

0.3% 0.105%–()

0.0035%

------------------------------ -------------- 2 7 x months===

00809-0100-4001, Rev KA

Sample calculation for Rosemount 3051C with P8 option (0.04% accuracy & 5-year stability)

Step 1: Determine the performance required for your application.

Required performance: 0.30% of span

Step 2: Determine the operating conditions.

Operation and Maintenance

May 2017

Transmitter: Rosemount 3051CD, Range 2 (URL=250 inH

Calibrated span: 150 inH

O (374 mbar)

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

Line pressure: 500 psig (34,5 bar)

Step 3: Calculate total probable error (TPE).

TPE = = 0.105% of span

Where:

Reference Accuracy = ± 0.04% of span

Ambient Temperature Effect =

Span Static Pressure Effect

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

(1)

Step 4: Calculate the stability per month.

Step 5: Calculate calibration frequency.

O [623 mbar])

Operation and Maintenance

Page 78

Operation and Maintenance

May 2017

4.3.2 Selecting a trim procedure

To decide which trim procedure to use, you must first determine whether the analog-to-digital section or the digital-to-analog section of the transmitter electronics need calibration. Refer to Figure 4-1 and perform the following procedure:

1. Connect a pressure source, a Field Communicator or AMS Device Manager, and a digital readout device to the transmitter.

2. Establish communication between the transmitter and the Field Communicator.

3. Apply pressure equal to the upper range point pressure.

4. Compare the applied pressure to the pressure process variable valve on the Process Variables menu on the Field Communicator or the Process Variables screen in AMS Device Manager. For instructions on how to access process variables, see page 15 of Section 2: Configuration.

a. If the pressure reading does not match the applied pressure (with high-accuracy test

equipment), perform a sensor trim. See “Sensor trim overview” on page 71 to determine which trim to perform.

5. Compare the Analog Output (AO) line, on the Field Communicator or AMS Device Manager, to the digital readout device.

Reference Manual

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If the AO reading does not match the digital readout device (with high-accuracy test equipment), perform an analog output trim. See “Analog output trim” on page 68.

4.4 Analog output trim

The analog output trim commands allow you to adjust the transmitter’s current output at the 4 and 20 mA (1 and 5 Vdc) points to match the plant standards. This command adjusts the digital to analog signal conversion.

Figure 4-2. Output Trim

A. Output trim B. Characterization curve

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Reference Manual

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4.4.1 Digital-to-Analog trim

Field Communicator

Operation and Maintenance

May 2017

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

To perform a digital-to-analog trim with a Field Communicator, perform the following procedure.

1. From the HOME screen, enter the Fast Key sequence “Digital-to-Analog Trim”. Select OK after setting

the control loop to manual, see “Setting the loop to manual” on page 4.

2. For 4–20 mA HART output, 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 Vdc Low Power HART output, connect a reference meter to the V

3. Select OK after connecting the reference meter.

4. Select OK at the SETTING FLD DEV OUTPUT TO 4 MA (1 Vdc) prompt. The transmitter outputs 4.0 mA.

5. Record the actual value from the reference meter, and enter it at the ENTER METER VALUE prompt. The

Field Communicator prompts you to verify whether or not the output value equals the value on the reference meter.

6. Select 1: Yes, if the reference meter value equals the transmitter output value, or 2: No if it does not.

a. If 1 is selected: Yes, proceed to Step 7. b. If 2 is selected: No, repeat Step 5.

1, 2, 3, 2, 1

3, 4, 2

terminal.

out

7. Select OK at the SETTING FLD DEV OUTPUT TO 20 MA (5 Vdc) prompt, and repeat steps 5 and 6 until the

reference meter value equals the transmitter output value.

8. Select OK after the control loop is returned to automatic control.

AMS Device Manager

1. Right click on the device and select Calibrate, then D/A trim from the menu.

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

3. Select Next after connecting the reference meter.

4. Select Next at the Setting fld dev output to 4 mA (1 Vdc) screen.

5. Record the actual value from the reference meter, and enter it at the Enter meter value screen and

select Next.

6. Select Yes , if the reference meter value equals the transmitter output value, or No if it does not.

Select Next.

a. If Yes is selected, proceed to Step 7. b. If No is selected, repeat Step 5.

7. Click Next at the Setting fld dev output to 20 mA (5 Vdc) screen.

8. Repeat steps 5–6 until the reference meter equals the transmitter output value.

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Operation and Maintenance

May 2017

9. Select Next to acknowledge the loop can be returned to automatic control.

10. Select Finish to acknowledge the method is complete.

4.4.2 Digital-to-Analog trim using other scale

The scaled D/A trim command matches the 4 and 20 mA (1 and 5 Vdc) points to a user selectable reference scale other than 4 and 20 mA (i.e. 2 to 10 volts if measuring across a 500 ohm load, or zero to 100 percent if measuring from a Distributed Control System [DCS]). To perform a scaled D/A trim, connect an accurate reference meter to the transmitter and trim the output signal to scale, as outlined in the output trim procedure.

Note

Use a precision resistor for optimum accuracy. If you add a resistor 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 for 4-20 mA HART” on page 48.

Field Communicator

Reference Manual

00809-0100-4001, Rev KA

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

1, 2, 3, 2, 2

3, 4, 2

AMS Device Manager

1. Right click on the device and select Calibrate, then Scaled D/A trim from the menu.

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

3. Select Change to change scale, select Next.

4. Enter Set scale-Lo output value, select Next.

5. Enter Set scale-Hi output value, select Next.

6. Select Next to proceed with Trim.

7. Select Next after connecting the reference meter.

8. Select Next at the Setting fld dev output to 4 mA screen.

9. Record the actual value from the reference meter, and enter it at the Enter meter value screen and select Next.

10. Select Yes , if the reference meter value equals the transmitter output value, or No if it does

not. Select Next.

a. If Yes is selected, proceed to Step 11. b. If No is selected, repeat Step 9.

11. Select Next at the Setting fld dev output to 20 mA screen.

12. Repeat steps 9–10 until the reference meter equals the transmitter output value.

13. Select Next to acknowledge the loop can be returned to automatic control.

14. Select Finish to acknowledge the method is complete.

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4.4.3 Recall factory trim—analog output

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. This command is only available with 4-20 mA output.

Field Communicator

Operation and Maintenance

May 2017

Traditional 4–20 mA Fast Keys

Device Dashboard Fast Keys

AMS Device Manager

1. Right click on the device and select Calibrate, then Recall Factory Trim from the menu.

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

2. Select Analog output trim under Trim to recal l and select Next.

3. Select Next to acknowledge restoration of trim values is complete.

4. Select Next to acknowledge the loop can be returned to automatic control.

5. Select Finish to acknowledge the method is complete.

4.5 Sensor trim

4.5.1 Sensor trim overview

Trim the sensor using either sensor or zero trim functions. Trim functions vary in complexity and are application-dependent. Both trim functions alter the transmitter’s interpretation of the input signal.

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.

1, 2, 3, 4, 2

3, 4, 3

When performing a zero trim, ensure that the equalizing valve is open and all wet legs are filled to the correct levels.

Note

Do not perform a zero trim on Rosemount 3051T Absolute Pressure Transmitters. Zero trim is zero based, and absolute pressure transmitters reference absolute zero. To correct mounting position effects on a Rosemount 3051T Absolute Pressure 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.

Sensor trim is a two-point sensor calibration where two end-point pressures are applied, and all output is linearized between them. 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 allow you to optimize performance over your specified measuring range at the calibration temperature.

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Figure 4-3. Sensor Trim

A. Upper sensor trim B. Sensor characterization curve C. Lower sensor trim

4.5.2 Zero trim

Note

The transmitter PV at zero pressure must be within three percent of URL in order to calibrate using the zero trim function.

Reference Manual

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Field Communicator

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

1, 2, 3, 3, 1

3, 4, 1, 3

Calibrate the sensor with a Field Communicator using the zero trim function as follows:

1. Vent the transmitter and attach a Field Communicator to the measurement loop.

2. From the HOME screen, follow the Fast Key sequence “Zero Trim”.

3. Follow the commands provided by the Field Communicator to complete the zero trim adjustment.

AMS Device anager

1. Right click on the device and select Calibrate, then Zero trim from the menu.

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

3. Select Next to acknowledge warning.

4. Select Next after applying appropriate pressure to sensor.

5. Select Next to acknowledge the loop can be returned to automatic control.

6. Select Finish to acknowledge the method is complete.

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4.5.3 Sensor trim

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 ten seconds before entering any values.

Field Communicator

Operation and Maintenance

May 2017

Traditional 4–20 mA Fast Keys

Traditional 1–5 Vdc Fast Keys

Device Dashboard Fast Keys

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

1. Assemble and power the entire calibration system including a transmitter, Field Communicator, power supply, pressure input source, and readout device.

2. From the HOME screen, enter the Fast Key sequence under “Sensor Trim”.

3. Select 2: Lower sensor trim. The lower sensor trim value should be the sensor trim point that is closest to zero.

Examples:

Calibration: 0 to 100 inH

Calibration: –100 to 0 inH

Calibration: –100 to 100 inH

Note

Select pressure input values so that lower and upper values are equal to or outside the 4 and 20 mA (1 and 5 Vdc) points. Do not attempt to obtain reverse output by reversing the high and low points. This can be done by going to “Rerange” on page 17 of Section 2: Configuration. The transmitter allows approximately five percent deviation.

O – lower trim = 0, upper trim = 100

O – lower trim = 0, upper trim = –100

O – lower trim = -100 or 100, upper trim = –100 or 100

1, 2, 3, 3

3, 4, 1

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

5. Repeat the procedure for the upper value, replacing 2: Lower sensor trim with 3: Upper sensor trim

Operation and Maintenance

value.

in Step 3.

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AMS Device Manager

1. Right click on the device and select Calibrate, then Sensor trim from the menu.

2. Select Lower sensor trim. The lower sensor trim value should be the sensor trim point that is closest

to zero.

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

4. Select Next after applying appropriate pressure to sensor.

5. Select Next to acknowledge the loop can be returned to automatic control.

6. Select Finish to acknowledge the method is complete.

Reference Manual

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7. Right click on the device and select Calibrate, select Sensor trim from the menu

8. Select Upper sensor trim and repeat Step 6.

4.5.4 Recall factory trim—sensor 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. This command is only available with 4-20 mA output.

Field Communicator

4–20 mA Fast Keys

Device Dashboard Fast Keys

AMS Device Manager

1. Right click on the device and select Calibrate, then Recall Factory Trim from the menu.

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

3. Select Sensor trim under Trim to recall and click Next.

4. Select Next to acknowledge restoration of trim values is complete.

5. Select Next to acknowledge the loop can be returned to automatic control.

1, 2, 3, 4, 1

3, 4, 3

6. Select Finish to acknowledge the method is complete.

4.5.5 Line pressure effect (range 2 and 3)

The following specifications show the static pressure effect for the Rosemount 3051Range 2 and Range 3 Pressure Transmitters used in differential pressure applications where line pressure exceeds 2000 psi (138 bar).

Zero effect

±0.1% of the upper range limit plus an additional ±0.1% of upper range limit error for each 1000 psi (69 bar) of line pressure above 2000 psi (138 bar).

Example: Line pressure is 3000 psi (207 bar) for Ultra performance transmitter. Zero effect error calculation:

±{0.05 + 0.1 ⫻ [3 kpsi – 2 kpsi]} = ±0.15% of the upper range limit

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Span effect

Refer to “Line pressure effect per 1000 psi (6,9 MPa)” on page 91.

4.5.6 Compensating for line pressure

Rosemount 3051 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 differential pressure transmitters (Ranges 1, 2, and 3) do not require this procedure because optimization occurs in the sensor.

Applying high static pressure to Rosemount 3051 Range 4 and 5 Pressure Transmitters causes a systematic shift in the output. This shift is linear with static pressure; correct it by performing the sensor trim procedure on page 73.

The following specifications show the static pressure effect for Rosemount 3051 Range 4 and 5 Transmitters used in differential pressure applications:

Zero effect

±0.1% of the upper range limit per 1000 psi (69 bar) for line pressures from 0 to 2000 psi (0 to 138 bar)

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For line pressures above 2000 psi (138 bar), the zero effect error is ±0.2% of the upper range limit plus an additional ±0.2% of upper range limit error for each 1000 psi (69 bar) of line pressure above 2000 psi (138 bar).

Example: Line pressure is 3000 psi (3 kpsi). Zero effect error calculation:

± {0.2 + 0.2 mm⫻[3 kpsi – 2 kpsi]} = ±0.4% of the upper range limit

Span effect

Correctable to ±0.2% of reading per 1000 psi (69 bar) for line pressures from 0 to 3626 psi (0 to 250 bar)

The systematic span shift caused by the application of static line pressure is –1.00% of reading per 1000 psi (69 bar) for Range 4 transmitters, and –1.25% of reading per 1000 psi (69 bar) for Range 5 transmitters.

Use the following example to compute corrected input values.

Example

A Range 4 transmitter with model number 3051_CD4 will be used in a differential pressure application where the static line pressure is 1200 psi (83 bar). The transmitter output is ranged with 4 mA at 500 inH

To correct for systematic error caused by high static line pressure, first use the following formulas to determine corrected values for the low trim and high trim.

O (1.2 bar) and 20 mA at 1500 inH2O (3.7 bar).

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Low trim value

LT = LRV - (S/100 ⫻ P/1000 ⫻ LRV)

Reference Manual

00809-0100-4001, Rev KA

LT = Corrected low trim value

Where:

LRV = Lower range value

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

P = Static line pressure in psi

In this example:

LRV = 500 inH

S = -1.00%

P = 1200 psi

LT = 500 inH

LT = 506 inH

High trim value

HT = (URV - (S/100 ⫻ P/1000 ⫻URV)

HT = Corrected high trim value

URV = Upper range value

Where:

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

P = Static line pressure in psi

In this example:

O (1.24 bar)

O - (-1%/100 ⫻1200 psi/1000 ⫻ 500 inH2O)

URV = 1500 inH

S = –1.00%

P = 1200 psi

HT = 1500 – (–1%/100 ⫻ 1200 psi/1000 ⫻ 1500 inH

HT = 1518 inH

O (3.74 bar)

Complete the sensor trim procedure as described on page 73. In the example above, at step 4, apply the nominal pressure value of 500 inH

inH

O with the Field Communicator. Repeat the procedure for the upper value.

O. However, enter the calculated correct lower trim (LT) value of 506

Note

The range values for the 4 and 20 mA (1 and 5 Vdc) 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 on the Field Communicator. Modify, if needed, by following the steps in the “Rerange” on

page 17.

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Section 5 Troubleshooting

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 77

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 77

Diagnostic messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 79

Disassembly procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 84

Reassembly procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 85

5.1 Overview

Ta bl e 5 - 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 Table 5-1 on page 78 to identify any potential problem.

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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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Table 5-1. Troubleshooting for 4-20 mA output

Symptom Corrective actions

Verify power is applied to signal terminals

Transmitter milliamp reading is zero

Transmitter not communicating with Field Communicator

Transmitter milliamp reading is low or high

Check power wires for reversed polarity

Verify terminal voltage is 10.5 to 42.4 Vdc

Check for open diode across test terminal

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

Verify terminal voltage is 10.5 to 42.4 Vdc

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

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

Have Field Communicator poll for all addresses

Verify applied pressure

Verify 4 and 20 mA range points

Verify output is not in alarm condition

Verify if 4–20 mA output trim is required

Check test equipment

Reference Manual

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Transmitter will not respond to changes in applied pressure

Digital pressure variable reading is low or high

Digital pressure variable reading is erratic

Milliamp reading is erratic

Check impulse piping or manifold for blockage

Verify the transmitter is not in multidrop mode

Verify applied pressure is between the 4 and 20 mA set points

Verify output is not in alarm condition

Verify transmitter is not in Loop Test mode

Check test equipment (verify accuracy)

Check impulse piping for blockage or low fill in wet leg

Verify transmitter is calibrated properly

Verify pressure calculations for application

Check application for faulty equipment in pressure line

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

Verify damping is set properly for application

Verify power source to transmitter has adequate voltage and current

Check for external electrical interference

Verify transmitter is properly grounded

Verify shield for twisted pair is only grounded at one end

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5.3 Diagnostic messages

In addition to the output, the LCD display meter shows abbreviated operation, error, and warning messages for troubleshooting the transmitter. Messages appear according to their priority, with normal operating messages appearing last. To determine the cause of a message, use a Field Communicator or AMS Device Manager to further interrogate the transmitter. A description of each LCD display diagnostic message follows.

Error

Error messages appear on the LCD display to inform you of serious problems affecting the operation of the transmitter. The LCD displays an error message until the error condition is corrected, and the analog output is driven to the specified alarm level. No other transmitter information is displayed during an alarm condition.

Fail

The transmitter CPU board and the sensor module are incompatible. See “Disassembly procedures” on

page 84.

Fail Module

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The sensor module is disconnected or is malfunctioning. Verify that the sensor module ribbon cable is connected to the back of the electronics board. If the ribbon cable is properly connected, there is a problem within the sensor module. Possible sources of problems include:

 Pressure or temperature updates are not being received in the sensor module.  A non-volatile memory fault that will effect transmitter operation has been detected in the module by

the memory verification routine.

Some non-volatile memory faults are user-repairable. Use a Field Communicator to diagnose the error and determine if it is repairable. Any error message that ends in “FACTORY” is not repairable. In cases of non user-repairable errors, you must replace the transmitter.

Fail Elect

The transmitter electronics board is malfunctioning due to an internal fault. Some of the FAIL ELECT errors are user-repairable. Use a Field Communicator to diagnose the error and determine if it is repairable. Any error message that ends in “FACTORY” is not repairable. In cases of non user-repairable errors, you must replace the electronics board. See “Disassembly procedures” on page 84.

Fail Config

A memory fault has been detected in a location that could affect transmitter operation, and is user-accessible. To correct this problem, use a Field Communicator to interrogate and reconfigure the appropriate portion of the transmitter memory.

Warnings

Troubleshooting

Warnings appear on the LCD display to alert you of user-repairable problems with the transmitter, or current transmitter operations. Warnings appear alternately with other transmitter information until the warning condition is corrected or the transmitter completes the operation that warrants the warning message.

Press Limit

The process variable read by the transmitter is outside of the transmitter’s range.

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Temp Limit

The secondary temperature variable read by the transmitter is outside of the transmitter’s range.

Curr Fixed

The transmitter is in multidrop mode. The analog output is not tracking pressure changes.

Curr Saturd

The pressure read by the module is outside of the specified range, and the analog output has been driven to saturation levels.

Loop Test

A loop test is in progress. During a loop test or 4–20 mA trim, the analog output is set to a fixed value. The meter display alternates between the current selected in milliamps and “LOOP TEST.”

Xmtr Info

A non-volatile memory fault has been detected in the transmitter memory by the memory verification routine. The memory fault is in a location containing transmitter information. To correct this problem, use a Field Communicator to interrogate and reconfigure the appropriate portion of the transmitter memory. This warning does not effect the transmitter operation.

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Operation

Normal operation messages appear on the LCD display meter to confirm actions or inform you of transmitter status. Operation messages are displayed with other transmitter information, and warrant no action to correct or alter the transmitter settings.

Zero Pass

The zero value, set with the local zero adjustment button, has been accepted by the transmitter, and the output should change to 4 mA (1 Vdc).

Zero Fail

The zero value, set with the local zero adjustment button, exceeds the maximum rangedown allowed for a particular range, or the pressure sensed by the transmitter exceeds the sensor limits.

Span Pass

The span value, set with the local span adjustment button, has been accepted by the transmitter, and the output should change to 20 mA (5 Vdc).

Span Fail

The span value, set with the local span adjustment button, exceeds the maximum rangedown allowed for a particular range, or the pressure sensed by the transmitter exceeds the sensor limits.

Local Dsbld

This message appears during reranging with the integral zero and span buttons and indicates that the transmitter local zero and span adjustments have been disabled. The adjustments may have been disabled by the transmitter security jumper on the transmitter circuit board or through software commands from the Field Communicator. See “Security (write protect)” on page 44 for information on the position of the security jumper and information on software lockout.

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Write Protect

This message appears if you attempt to change the transmitter configuration data while the security jumper is in the ON position. See “Security (write protect)” on page 44 for more information about the security jumper.

Field Communicator diagnostics

Ta bl e 5 - 2 is a list of messages used by the Field Communicator (HC) and their corresponding

descriptions.

Variable parameters within the text of a message are indicated with <variable parameter>.

Reference to the name of another message is identified by [another message].

Table 5-2. Field Communicator Messages

Message Description

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1k snsr EEPROM error-factory ON

1k snsr EEPROM error-user-no out ON

1k snsr EEPROM error-user ON

4k micro EEPROM error-factory ON

4k micro EEPROM error-user-no out ON

4k micro EEPROM error-user ON

4k snsr EEPROM error-factory ON

4k snsr EEPROM error-user ON

Add item for ALL device types or only for this ONE device type.

Command Not Implemented The connected device does not support this function.

Communication Error

Configuration memory not compatible with connected device

Replace the transmitter

Use the Field Communicator to reset the following parameters: remote seal isolator, remote seal fill fluid, flange material, o-ring material, transmitter type, remote seal type, flange type, meter type, number of remote seals.

Perform a full trim to recalibrate the transmitter.

Replace the electronics board.

Use the Field Communicator to reset the message field.

Use the Field Communicator to reset the following parameters: units, range values, damping, analog output, transfer function, tag, scaled meter values. Perform a D/A trim to ensure that the error is corrected.

Replace the transmitter.

Use the Field Communicator to reset the temperature units and the calibration type.

Asks the user whether the hot key item being added should be added for all device types or only for the type of device that is connected.

The communicator and the device are not communicating correctly. Check all connections between the Field Communicator and the device and resend the information.

The configuration stored in memory is incompatible with the device to which a transfer has been requested.

Troubleshooting

CPU board not initialized ON

CPU EEPROM write failure ON

Device Busy The connected device is busy performing another task.

The electronics board is not initialized. Replace the electronics board.

Message sent to electronics board from HART® signal failed. Replace the electronics board.

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Message Description

Device Disconnected

Device write protected Device is in write-protect mode. Data can not be written.

Device write protected. Do you still want to shut off?

Display value of variable on hotkey menu?

Download data from configuration memory to device

Exceed field width

Exceed precision

Ignore next 50 occurrences of status?

Illegal character An invalid character for the variable type was entered.

Illegal date The day portion of the date is invalid.

Illegal month The month portion of the date is invalid.

Illegal year The year portion of the date is invalid.

Incompatible CPU board and module ON

Incomplete exponent

The device failed to respond to a command. Check all connections between the Field Communicator and the device and resend the command.

Device is in write-protect mode. Press YES to turn the Field Communicator off and lose the unsent data.

Asks whether the value of the variable should be displayed adjacent to its label on the hotkey menu if the item being added to the hotkey menu is a variable.

Press the SEND softkey to transfer information from the communicator memory to the device.

Indicates that the field width for the current arithmetic variable exceeds the device-specified description edit format.

Indicates that the precision for the current arithmetic variable exceeds the device-specified description edit format.

Select YES to ignore the next 50 occurrences of device status, or select

NO to display every occurrence.

Upgrade the electronics board or the sensor module to the current revision.

The exponent of a scientific notation floating point variable is incomplete.

Incomplete field The value entered is not complete for the variable type.

Looking for a device Polling for multidropped devices at addresses 1–15.

Local buttons operator error ON

Mark as read only variable on hotkey menu?

Module EEPROM write failure ON

No device configuration in configuration memory

No Device Found

No hotkey menu available for this device.

No pressure updates ON

No offline devices available.

No simulation devices available. There are no device descriptions available to simulate a device.

Illegal pressure applied during zero or span operation. Repeat the process after verifying the correct pressures.

Asks whether the user should be allowed to edit the variable from the hotkey menu if the item being added to the hotkey menu is a variable.

Message sent to the module from the HART signal failed. Replace the transmitter.

There is no configuration saved in memory available to re-configure off-line or transfer to a device.

Poll of address zero fails to find a device, or poll of all addresses fails to find a device if auto-poll is enabled.

There is no menu named “hotkey” defined in the device description for this device.

No pressure updates being received from the sensor module. Verify that the sensor module ribbon cable is attached correctly. Or replace the transmitter.

There are no device descriptions available to be used to configure a device offline.

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Message Description

Troubleshooting

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No temperature updates ON

No UPLOAD_VARIABLES in ddl for this device

No Valid Items The selected menu or edit display contains no valid items.

OFF KEY DISABLED

Online device disconnected with unsent data. RETRY or OK to lose data.

Out of memory for hotkey configuration. Delete unnecessary items.

Overwrite existing configuration memory

Press OK...

Restore device value?

ROM checksum error ON

Save data from device to configuration memory

No temperature updates being received from the sensor module. Verify that the sensor module ribbon cable is attached correctly. Or replace the transmitter.

There is no menu named “upload_variables” defined in the device description for this device. This menu is required for offline configuration.

Appears when the user attempts to turn the HC off before sending modified data or before completing a method.

There is unsent data for a previously connected device. Press RETRY to send data, or press OK to disconnect and lose unsent data.

There is no more memory available to store additional hotkey items. Unnecessary items should be deleted to make space available.

Requests permission to overwrite existing configuration either by a device-to-memory transfer or by an offline configuration. User answers using the softkeys.

Press the OK softkey. This message usually appears after an error message from the application or as a result of HART communications.

The edited value that was sent to a device was not properly implemented. Restoring the device value returns the variable to its original value.

Checksum of transmitter software has detected a fault. Replace the electronics board.

Prompts user to press SAVE softkey to initiate a device-to-memory transfer.

Saving data to configuration memory.

Sending data to device. Data is being transferred from configuration memory to a device.

Sensor board not initialized ON

There are write only variables which have not been edited. Please edit them.

There is unsent data. Send it before shutting off?

Too few data bytes received

Tra nsmitter Fault

Units for <variable label> has changed. Unit must be sent before editing, or invalid data will be sent.

Unsent data to online device. SEND or LOSE data

Upgrade 275 software to access XMTR function. Continue with old description?

Data is being transferred from a device to configuration memory.

The sensor module electronics board is not initialized. Replace the transmitter.

There are write-only variables which have not been set by the user. These variables should be set or invalid values may be sent to the device.

Press YES to send unsent data and turn the HC off. Press NO to turn the HC off and lose the unsent data.

Command returns fewer data by tes than expected as determined by the device description.

Device returns a command response indicating a fault with the connected device.

The engineering units for this variable have been edited. Send engineering units to the device before editing this variable.

There is unsent data for a previously connected device which must be sent or thrown away before connecting to another device.

The communicator does not contain the most recent Rosemount™ 3051 Pressure Transmitter Device Descriptors (DDs). Select YES to communicate using the existing DDs. Select NO to abort communication.

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Troubleshooting

See “Safety messages” on page 77 for complete warning information.

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Message Description

Use up/down arrows to change contrast. Press DONE when done.

Value out of range

<message> occurred reading/writing <variable label>

<variable label> has an unknown value. Unit must be sent before editing, or invalid data will be sent.

Gives direction to change the contrast of the HC display.

The user-entered value is either not within the range for the given type and size of variable or not within the min/max specified by the device.

Either a read/write command indicates too few data bytes received, transmitter fault, invalid response code, invalid response command, invalid reply data field, or failed pre- or post-read method; or a response code of any class other than SUCCESS is returned reading a particular variable.

A variable related to this variable has been edited. Send related variable to the device before editing this variable.

5.4 Disassembly procedures

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

5.4.1 Remove from service

Follow these steps:

 Follow all plant safety rules and procedures.  Isolate and vent the process from the transmitter before removing the transmitter from service.  Remove all electrical leads and disconnect conduit.  Remove the transmitter from the process connection.  The Rosemount 3051C Transmitter is attached to the process connection by four bolts and two cap

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

 The Rosemount 3051T 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.

 Do not scratch, puncture, or depress the isolating diaphragms.  Clean isolating diaphragms with a soft rag and a mild cleaning solution, and rinse with clear water.  For the Rosemount 3051C, 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.

5.4.2 Remove 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.

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

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5.4.3 Remove the electronics board

The transmitter electronics board is located in the compartment opposite the terminal side. To remove the electronics board perform the following procedure:

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

2. If you are disassembling a transmitter with a LCD display, loosen the two captive screws that are visible on the right and left side of the meter display.

3. Loosen the two captive screws that anchor the board to the housing. The electronics board is electrostatically sensitive; observe handling precautions for static-sensitive components. Use caution when removing the LCD display as there is an electronic pin connector that interfaces between the LCD display and electronics board. The two screws anchor the LCD display to the electronics board and the electronics board to the housing.

4. 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.

5.4.4 Remove the sensor module from the electronics housing

May 2017

1. Remove the electronics board. Refer to “Remove the electronics board” on page 85.

Important

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.

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. Loosen the housing rotation set screw with a

4. Unscrew the module from the housing, making sure the black cap and sensor cable do not catch on the housing.

5.5 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.

/64-in. hex wrench, and loosen one full turn.

Troubleshooting

3. Lower the electronics housing onto the module. Guide the internal black cap and cable through the housing and into the external black cap.

4. Turn the module clockwise into the housing.

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See “Safety messages” on page 77 for complete warning information.

May 2017

Important

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

5.5.1 Attach the 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 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 Explosionproof requirements.

5.5.2 Install the terminal block

1. Gently slide the terminal block into place, making sure the two 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.

5.5.3 Reassemble the Rosemount 3051C 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:

b. Coplanar process flange with flange adapters:

c. Manifold:

3. Tighten the bolts to the initial torque value using a crossed pattern. See Ta bl e 5 - 3 for appropriate torque values.

Troubleshooting

May 2017

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

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

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

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

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

– Hold the flange adapters and adapter o-rings in place while installing the four

configurations, use four 2.88-in. bolts. For gage pressure configurations, use two 2.88-in. bolts and two 1.75-in. bolts.

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

Table 5-3. Bolt Installation Torque Values

Bolt material Initial torque value Final torque value

CS-ASTM-A445 standard 300 in-lb. (34 N-m) 650 in-lb. (73 N-m)

316 SST—option L4 150 in-lb. (17 N-m) 300 in-lb. (34 N-m)

ASTM-A-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

After replacing O-rings on Range 1 transmitters 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.

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Specifications and Reference Data

0.025 0.005+

URL

Span

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





% of Span±

0.015 0.005+

URL

Span

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





% of Span±

0.015 0.005+

URL

Span

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





% of Span±

0.0075

URL

Span

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





% of Span±

0.0075

URL

Span

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





% of Span±

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Appendix A Specifications and Reference Data

Performance specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 89

Functional specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 93

Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 99

Dimensional drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 101

Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 113

Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 130

Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 136

A.1 Performance

specifications

This product data sheet covers both HART® and F

OUNDATION

A.1.2 Reference accuracy

Rosemount models

3051CD, 3051CG

™

Fieldbus protocols unless specified.

(1)

Range 0 (CD) ±0.10% of span

Range 1 ±0.10% of span

Ranges 2–5 ±0.065% of span

Standard High accuracy option

For spans less than 2:1, accuracy = ±0.05% of URL

For spans less than 15:1, accuracy =

For spans less than 10:1, accuracy =

A.1.1 Conformance to specification

(±3σ [Sigma])

Technology leadership, advanced manufacturing techniques and statistical process control ensure specification conformance to at least ±3σ.

N/A

Ranges 2–4 High accuracy option, P8 ±0.04% of span For spans less than 5:1, accuracy =

3051T

Ranges 1–4

±0.065% of span For spans less than 10:1, accuracy =

Range 5 ±0.075% of span N/A

Ranges 1–4 High accuracy option, P8 ±0.04% of span For spans less than 5:1, accuracy =

Specifications and Reference Data

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0.0075

URL

Span

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





% of Span±

0.0075

URL

Span

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





% of Span±

0.025 0.005+

URL

Span

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Specifications and Reference Data

May 2017

3051CA

Ranges 1–4 ±0.065% of span

For spans less than 10:1, accuracy =

Ranges 2–4 High Accuracy Option, P8 ±0.04% of span For spans less than 5:1, accuracy =

3051H/3051L

All ranges ±0.075% of span

For spans less than 10:1, accuracy =

1. Total performance is determined by performing a root sum square calculation on reference accuracy, ambient temperature effect, and line pressure effect errors. For

OUNDATION Fieldbus transmitters, use calibrated range in place of span. For zero based spans, reference conditions, silicone oil fill, SST materials, Coplanar flange

F (Rosemount 3051C) or

/2 in. - 18 NPT (Rosemount 3051T) process connections, digital trim values set to equal range points.

N/A

A.1.3 Total performance

For ±50 °F (28 °C) temperature changes, up to 1000 psi (6,9 MPa) line pressure (CD only), from 1:1 to 5:1 rangedown.

Rosemount models Total performance

3051C

Ranges 2-5 ±0.15% of span

3051T

Ranges 1-4

±0.15% of span

A.1.4 Long term stability

Rosemount models Long term stability

3051C

Ranges 2-5

3051CD Low/Draft Range

Ranges 0-1

3051T

Ranges 1-4

3051H

Ranges 2-3 Ranges 4-5

±0.125% of URL for five years ±50 °F (28 °C) temperature changes, and up to 1000 psi (6,9 MPa) line pressure.

±0.2% of URL for one year

±0.125% of URL for one years ±50 °F (28 °C) temperature changes, and up to 1000 psi (6,9 MPa) line pressure.

±0.1% of URL for 1 year ±0.2% of URL for 1 year

Specifications and Reference Data

Rosemount 3051C Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Section 1 Introduction

1.1 Using this manual

1.2 Models covered

1.3 Product recycling/ disposal

Section 2 Configuration

2.1 Overview

2.2 Safety messages

2.3 Commissioning

2.4 Configuration data review

2.5 Field Communicator

2.6 Field Communicator menu trees

2.7 Traditional Fast Key sequence

2.8 Check output

2.9 Basic setup

2.10 LCD display

2.11 Detailed setup

2.12 Diagnostics and service

2.13 Advanced functions

2.14 Multidrop communication

2.15 Changing a transmitter address

Section 3 Installation

3.1 Overview

3.2 Safety messages

3.3 General considerations

3.4 Mechanical considerations

3.5 Draft range considerations

3.6 Environmental considerations

3.7 HART installation flowchart

3.8 Installation procedures

3.9 Electrical considerations

3.10 Hazardous locations certifications

3.11 Rosemount 305, 306, and 304 Manifolds

3.12 Liquid level measurement

Section 4 Operation and Maintenance

4.1 Overview

4.2 Safety messages

4.3 Calibration overview

4.4 Analog output trim

4.5 Sensor trim

Section 5 Troubleshooting

5.1 Overview

5.2 Safety messages

5.3 Diagnostic messages

5.4 Disassembly procedures

5.5 Reassembly procedures

Appendix A Specifications and Reference Data