Rosemount Magnetic Flow Meter System - Model 8750WA Manuals & Guides

Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA
Magnetic Flowmeter System

www.rosemount.com

Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Table of Contents

SECTION 1
Introduction

SECTION 2
Installation of the
8750WA12

System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Service Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Transmitter Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Pre-Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Mechanical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Environmental Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Mount the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Identify Options and Configurations . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Hardware Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Conduit Ports and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Conduit Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Installation Category. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Overcurrent Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Options, Considerations, and Procedures . . . . . . . . . . . . . . . . . . . . . . 2-9

Connect Transmitter Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Connect 4–20 mA Loop External Power Source . . . . . . . . . . . . . . 2-9

Connect Pulse Output Power Source. . . . . . . . . . . . . . . . . . . . . . 2-10

Connect Auxiliary Channel 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Connect Auxiliary Channel 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Sensor Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Rosemount Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Transmitter to Sensor Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Sensor to Remote Mount Transmitter Connections . . . . . . . . . . . 2-14

SECTION 3
Installation of the
8750WA32

www.emersonprocess.com/rosemount

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Transmitter Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Pre-Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Mechanical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Environmental Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Mount the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Identify Options and Configurations . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Hardware Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Conduit Ports and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Conduit Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Installation Category. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Overcurrent Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Rosemount 8750WA

Reference Manual

00809-0100-4750, Rev AA

July 2009

Options, Considerations, and Procedures . . . . . . . . . . . . . . . . . . . . . . 3-9

Connect Transmitter Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Connect 4–20 mA Loop External Power Source . . . . . . . . . . . . . 3-10

Connect Pulse Output Power Source. . . . . . . . . . . . . . . . . . . . . . 3-11

Connect Digital or Discrete Output . . . . . . . . . . . . . . . . . . . . . . . . 3-13

Connect Digital Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Sensor Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Rosemount Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Transmitter to Sensor Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Conduit Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Sensor to Remote Mount Transmitter Connections . . . . . . . . . . . 3-19

SECTION 4
Configuration

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Installation Check and Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Local Operator Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

8750WA12 LOI Basic Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Data Entry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Selecting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

LOI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Table Value Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Select Value Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Diagnostic Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Process Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

PV - Primary Variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

PV -% Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

PV - Analog Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Totalizer Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Pulse Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Basic Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Tag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Flow Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Line Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

PV URV (Upper Range Value) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

PV LRV (Lower Range Value) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

Calibration Number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

PV Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

8750WA32 LOI Basic Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Data Entry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

LOI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Table Value Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Select Value Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Display Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Start Totalizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Stop Totalizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Reset Totalizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

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Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

SECTION 5
Advanced Functionality
of the 8750WA12

SECTION 6
Advanced Functionality
of the 8750WA32

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Diagnostic Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Basic Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Advanced Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Diagnostic Variable Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

Trims. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Advanced Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Detailed Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Additional Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Configure Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

LOI Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

Signal Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

Device Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-34

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Diagnostic Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Basic Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Advanced Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Diagnostic Variable Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Trims. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

Advanced Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

Detailed Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

Additional Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

Configure Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

LOI Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23

Signal Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24

Device Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26

SECTION 7
Sensor Installation

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Sensor Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Sensor Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

Upstream/Downstream

Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

Sensor Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

Flow Direction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

Installation (Flanged Sensor). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Flange Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Installation

(Wafer Sensor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

Flange Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

TOC-3

Rosemount 8750WA

Reference Manual

00809-0100-4750, Rev AA

July 2009

SECTION 8
Maintenance and
Troubleshooting

APPENDIX A
Reference Data

APPENDIX B
Approval Information

APPENDIX C
Diagnostics

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Installation Check and Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

Diagnostic Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

Transmitter Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

Quick Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

Step 1: Wiring Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

Step 2: Process Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

Step 3: Installed Sensor Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

Step 4: Uninstalled Sensor Tests . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

Rosemount 8750WA Specifications . . . . . . . . . . . . . . . . . . . . . . . . . .A-1

Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Flanged Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Wafer Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5

8750WA32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5

8750WA12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6

North American Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1

Diagnostic Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1

Licensing and Enabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2

Licensing the 8750WA12 Diagnostics . . . . . . . . . . . . . . . . . . . . . .C-2

Tunable Empty Pipe Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-2

Tunable Empty Pipe Parameters . . . . . . . . . . . . . . . . . . . . . . . . . .C-3

Optimizing Tunable Empty Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . .C-3

Troubleshooting Empty Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-4

Ground/Wiring Fault Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-4

Ground/Wiring Fault Parameters . . . . . . . . . . . . . . . . . . . . . . . . . .C-4

Troubleshooting Ground/Wiring Fault. . . . . . . . . . . . . . . . . . . . . . .C-5

Ground/Wiring Fault Functionality . . . . . . . . . . . . . . . . . . . . . . . . .C-5

High Process Noise Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-5

High Process Noise Parameters . . . . . . . . . . . . . . . . . . . . . . . . . .C-6

Troubleshooting High Process Noise . . . . . . . . . . . . . . . . . . . . . . .C-6

High Process Noise Functionality. . . . . . . . . . . . . . . . . . . . . . . . . .C-7

8714i Meter Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-7

Sensor Signature Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-8

8714i Meter Verification Test Parameters . . . . . . . . . . . . . . . . . . .C-8

8714i Meter Verification Test Results Parameters . . . . . . . . . . . .C-10

Optimizing the 8714i Meter Verification . . . . . . . . . . . . . . . . . . . .C-12

Troubleshooting the 8714i Meter Verification Test . . . . . . . . . . . .C-13

8714i Meter Verification Functionality. . . . . . . . . . . . . . . . . . . . . .C-13

Rosemount Magnetic Flowmeter Calibration Verification Report . . .C-15

4-20 mA Loop Verification (8750WA32 Only) . . . . . . . . . . . . . . . . . .C-15

4-20 mA Loop Verification Parameters. . . . . . . . . . . . . . . . . . . . .C-16

Troubleshooting 4-20 mA Loop Verification . . . . . . . . . . . . . . . . .C-16

4-20 mA Loop Verification Functionality. . . . . . . . . . . . . . . . . . . .C-16

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Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

APPENDIX D
Digital Signal Processing

APPENDIX E
HART Field
Communicator Operation

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-1

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-1

Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-2

Auto Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-2

Signal Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-2

HandHeld Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1

Connections and Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1

Basic Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-3

Action Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-4

Alphanumeric and Shift Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-4

Fast Key Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-5

Menus and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-5

Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-6

Online Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-6

Diagnostic Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-7

TOC-5

Rosemount 8750WA

Reference Manual

00809-0100-4750, Rev AA

July 2009

TOC-6

Reference Manual

00809-0100-4750, Rev AA
July 2009

Section 1 Introduction

System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 1-1

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 1-2

Service Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 1-2

Rosemount 8750WA

SYSTEM DESCRIPTION The Rosemount

sensor and transmitter, and measures volumetric flow rate by detecting the
velocity of a conductive liquid that passes through a magnetic field.

There are two Rosemount magnetic flowmeter sensors:

• Flanged Rosemount 8750WA xxxxxxxxF

• Wafer-Style Rosemount 8750WA xxxxxxxxW

There are two Rosemount magnetic flowmeter transmitters:

• Rosemount 8750WA12

• Rosemount 8750WA32

The sensor is installed in-line with process piping — either vertically or
horizontally. Coils located on opposite sides of the sensor create a magnetic
field. Electrodes located perpendicular to the coils make contact with the
process fluid. A conductive liquid moving through the magnetic field
generates a voltage at the two electrodes that is proportional to the flow
velocity.

The transmitter drives the coils to generate a magnetic field, and electronically
conditions the voltage detected by the electrodes to provide a flow signal. The
transmitter can be integrally or remotely mounted from the sensor.

This manual is designed to assist in the installation and operation of the
Rosemount 8750WA Magnetic Flowmeter.

®

8700 Series Magnetic Flowmeter System consists of a

www.rosemount.com

Reference Manual

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

00809-0100-4750, Rev AA

Rosemount 8750WA

July 2009

SAFETY MESSAGES Procedures and instructions in this manual may require special precautions to

ensure the safety of the personnel performing the operations. Refer to the
safety messages listed at the beginning of each section before performing
any operations.

Attempting to install and operate the Rosemount 8750WA Flowmeter system, without
reviewing the instructions contained in this manual could result in personal injury or
equipment damage.

SERVICE SUPPORT To expedite the return process outside the United States, contact the nearest

Emerson Process Management representative.

Within the United States and Canada, call the North American Response
Center using the 800-654-RSMT (7768) toll-free number. The Response
Center, available 24 hours a day, will assist you with any needed information
or materials.

The center will ask for product model and serial numbers, and will provide a
Return Material Authorization (RMA) number. The center will also ask for the
name of the process material to which the product was last exposed.

Mishandling products exposed to a hazardous substance may result in death
or serious injury. If the product being returned was exposed to a hazardous
substance as defined by OSHA, a copy of the required Material Safety Data
Sheet (MSDS) for each hazardous substance identified must be included with
the returned goods.

The North American Response Center will detail the additional information
and procedures necessary to return goods exposed to hazardous
substances.

1-2

Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Section 2 Installation of the 8750WA12

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2-1

Transmitter Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-2

Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2-2

Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2-4

Options, Considerations, and Procedures . . . . . . . . . . . .page 2-9

Sensor Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2-13

This section covers the steps required to physically install the magnetic
flowmeter. Instructions and procedures in this section may require special
precautions to ensure the safety of the personnel performing the operations.
Please refer to the following safety messages before performing any
operation in this section.

SAFETY MESSAGES This symbol is used throughout this manual to indicate that special attention

to warning information is required.

Instructions and procedures in this section may require special precautions to
ensure the safety of the personnel performing the operations. Please refer to
the following safety messages before performing any operation in this section.

Failure to follow these installation guidelines could result in death or serious injury:

Installation and servicing instructions are for use by qualified personnel only. Do not perform
any servicing other than that contained in the operating instructions, unless qualified. Verify
that the operating environment of the sensor and transmitter is consistent with the
appropriate hazardous area approval.

Do not connect a Rosemount 8750WA12 to a non-Rosemount sensor that is located in an
explosive atmosphere.

www.rosemount.com

Rosemount 8750WA

Reference Manual

00809-0100-4750, Rev AA

July 2009

Explosions could result in death or serious injury:

Installation of this transmitter in an explosive environment must be in accordance with the
appropriate local, national, and international standards, codes, and practices. Please review
the approvals section of the 8750WA12 reference manual for any restrictions associated
with a safe installation.

Before connecting a handheld communicator in an explosive atmosphere, make sure the
instruments in the loop are installed in accordance with intrinsically safe or non-incendive
field wiring practices.

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.

The sensor liner is vulnerable to handling damage. Never place anything through the sensor
for the purpose of lifting or gaining leverage. Liner damage can render the sensor useless.

To avoid possible damage to the sensor liner ends, do not use metallic or spiral-wound
gaskets. If frequent removal is anticipated, take precautions to protect the liner ends. Short
spool pieces attached to the sensor ends are often used for protection.

Correct flange bolt tightening is crucial for proper sensor operation and life. All bolts must be
tightened in the proper sequence to the specified torque limits. Failure to observe these
instructions could result in severe damage to the sensor lining and possible sensor
replacement.

TRANSMITTER SYMBOLS

Caution symbol — check product documentation for details

Protective conductor (grounding) terminal

PRE-INSTALLATION Before installing the Rosemount 8750WA12 Magnetic Flowmeter Transmitter,

there are several pre-installation steps that should be completed to make the
installation process easier:

• Identify the options and configurations that apply to your application

• Set the hardware switches if necessary

• Consider mechanical, electrical, and environmental requirements

Mechanical
Considerations

The mounting site for the Rosemount 8750WA12 transmitter should provide
enough room for secure mounting, easy access to conduit ports, full opening
of the transmitter covers, and easy readability of the LOI screen (see Figure
2-1). The transmitter should be mounted in a manner that prevents moisture
in conduit from collecting in the transmitter.

The 8750WA12 is mounted separately from the sensor, it is not subject to
limitations that might apply to the sensor.

2-2

Reference Manual

4.31

(109)

LOI Keypad

Cover

9.01

(229)

11.15
(283)

2.81
(71)

3.11
(79)

12.02
(305)

0.44
(11)

Ground Lug

1

/2–14 NPT

Conduit

Connection

(4 Places)

WITH STANDARD COVER

NOTE

Dimensions are in inches (millimeters)

2.96
(75)

WITH LOI COVER

00809-0100-4750, Rev AA
July 2009

Figure 2-1. Rosemount
8750WA12 Dimensional
Drawing

Rosemount 8750WA

2-3

Rosemount 8750WA

Reference Manual

00809-0100-4750, Rev AA

July 2009

Environmental
Considerations

INSTALLATION PROCEDURES

To ensure maximum transmitter life, avoid excessive heat and vibration.
Typical problem areas:

• high-vibration lines with integrally mounted transmitters

• warm-climate installations in direct sunlight

• outdoor installations in cold climates.

Remote-mounted transmitters may be installed in the control room to protect
the electronics from the harsh environment and provides easy access for
configuration or service.

Rosemount 8750WA12 transmitters require external power and there must be
access to a suitable power source.

Rosemount 8750WA12 installation includes both detailed mechanical and
electrical installation procedures.

Mount the Transmitter At a remote site the transmitter may be mounted on a pipe up to two inches in

diameter or against a flat surface.

Pipe Mounting

To mount the transmitter on a pipe:

1. Attach the mounting plate to the pipe using the mounting hardware.

2. Attach the 8750WA12 to the mounting plate using the mounting
screws.

Surface Mounting

To surface mount the transmitter:

1. Attach the 8750WA12 to the mounting location using the mounting
screws.

Identify Options and
Configurations

The standard application of the 8750WA12 includes a 4–20 mA output and
control of the sensor coils. Other applications may require one or more of the
following configurations or options:

• Multidrop Communications

• PZR (Positive Zero Return)

• Auxiliary Output

• Pulse Output

Additional options may apply. Be sure to identify those options and
configurations that apply to your situation, and keep a list of them nearby for
consideration during the installation and configuration procedures.

Hardware Switches The 8750WA12 electronics board is equipped with

three user-selectable hardware switches. These switches set the Failure
Alarm Mode, Internal/External Analog Power, and Transmitter Security. The
standard configuration for these switches when shipped from the factory are
as follows:

Failure Alarm Mode: HIGH

Internal/External Analog Power: INTERNAL

Transmitter Security: OFF

2-4

Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Changing Hardware Switch Settings

In most cases, it is not necessary to change the setting of the hardware
switches. If you need to change the switch settings, complete the steps
outlined in the manual.

Definitions of these switches and their functions are provided below. If you
determine that the settings must be changed, see below.

Failure Alarm Mode

If the 8750WA12 experiences a catastrophic failure in the electronics, the
current output can be driven high (23.25 mA) or low (3.75 mA). The switch is

set in the HIGH (23.25 mA) position when it is shipped from the factory.

Internal/External Analog Power

The Rosemount 8750WA12 4–20 mA loop may be powered internally
or by an external power supply. The internal/external power supply switch
determines the source of the 4–20 mA loop power.
Transmitters are shipped from the factory with the switch set

in the INTERNAL position.

The external power option is required for multidrop configurations. A 10–30 V
dc external supply is required and the 4-20mA power switch must be set to
“EXT” position. For further information on 4–20 mA external power, see
Connect 4–20 mA Loop External Power Source on page 2-9.

Transmitter Security

The security switch on the 8750WA12 allows the user to lock out any
configuration changes attempted on the transmitter. No changes to the

configuration are allowed when the switch is in the ON position. The flow rate

indication and totalizer functions remain active at all times.

With the switch in the ON position, you may still access and review any of the

operating parameters and scroll through the available choices, but no actual

data changes are allowed. Transmitter security is set in the OFF position

when shipped from factory.

Changing Hardware Switch Settings

In most cases, it is not necessary to change the setting of the hardware
switches. If you need to change the switch settings, complete the steps
below:

NOTE

The hardware switches are located on the non-component side of the
electronics board and changing their settings requires opening the electronics
housing. If possible, carry out these procedures away from the plant
environment in order to protect the electronics.

1. Disconnect power to the transmitter.

2. Loosen the housing door screw and open the housing door.

3. Identify the location of each switch (see Figure 2-2).

4. Change the setting of the desired switches with a small screwdriver.

5. Close the housing door and tighten the housing door screw.

2-5

Rosemount 8750WA

Figure 2-2. Rosemount
8750WA12 Electronics Board
and Hardware Switches

Reference Manual

00809-0100-4750, Rev AA

July 2009

Conduit Ports
and Connections

Both the sensor and transmitter junction boxes have ports for ¾-inch NPT
conduit connections. These connections should be made in accordance with
local or plant electrical codes. Unused ports should be sealed with metal
plugs. Proper electrical installation is necessary to prevent errors due to
electrical noise and interference. Separate conduits are not necessary for the
two cables, but a dedicated conduit line between each transmitter and sensor
is required. Shielded cable must be used for best results in electrically
noisy environments.

Example 1: Installing flanged sensors into an IP68 area. Sensors must be

installed with IP68 cable glands and cable to maintain IP68 rating. Unused
conduit connections must be properly sealed to prevent water ingress. For
added protection, dielectric gel can be used to pot the sensor terminal block.

Example 2: Installing flowmeters into explosion proof areas. Conduit

connections and conduit must be rated for use in the hazardous area to
maintain flowmeter approval rating.

Conduit Cables Run the appropriate size cable through the conduit connections in your

magnetic flowmeter system. Run the power cable from the power source to
the transmitter. Run the coil drive and electrode cables between the flowmeter
and transmitter. Refer to Electrical Considerations for wire type. Prepare the
ends of the coil drive and electrode cables as shown in Figure 2-3. Limit the
unshielded wire length to 1-inch on both the electrode and coil drive cables.
Excessive lead length or failure to connect cable shields can create electrical
noise resulting in unstable meter readings.

• Installed signal wiring should not be run together and should not be in

the same cable tray as AC or DC power wiring.

• Device must be properly grounded or earthed according to local

electric codes.

• Rosemount combination cable model number 08712-0752-0001 (ft) or

08712-0752-0003 (m) is required to be used to meet EMC
requirements.

2-6

Reference Manual

NOTE
Dimensions are in
inches
(millimeters).

1.00
(26)

Cable Shield

MaximumResis cetan

SupplyVoltage 12– Vdc

1amp

------------------------------------------------------------ ------=

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Figure 2-3. Cable Preparation
Detail

Electrical Considerations Before making any electrical connections to the Rosemount 8750WA12,

consider the following standards and be sure to have the proper power
supply, conduit, and other accessories.

Transmitter Input Power

The 8750WA12 transmitter is designed to be powered by 90-250 V ac, 50–60
Hz or 12–42 V dc. The seventh and eighth digits in the transmitter model
number designate the appropriate power supply requirement.

Model Number Power Supply Requirement

1 90-250 V ac
2 12-42 V dc

Supply Wire Temperature Rating

Use 14 to 18 AWG wire rated for the proper temperature of the application.
For connections in ambient temperatures exceeding 140 °F (60 °C), use
wire rated to at least 194 °F (90 °C).

Disconnects

Connect the device through an external disconnect or circuit breaker.
Clearly label the disconnect or circuit breaker and locate it near the
transmitter.

Requirements for 90-250 V ac Power Supply

Wire the transmitter according to local electrical requirements for the supply
voltage. In addition, follow the supply wire and disconnect requirements on
page 2-9.

Requirements for 12-42 V dc Power Supply

Units powered with 12-42 V dc may draw up to 1 amp of current. As a result,
the input power wire must meet certain gauge requirements.

Figure 2-4 shows the surge current for each corresponding supply voltage.
For combinations not shown, you can calculate the maximum distance given
the supply current, the voltage of the source, and the minimum start-up
voltage of the transmitter, 12 V dc, using the following equation:

Use Table 2-1 and Table 2-2 to determine the maximum wire length allowable
for your power supply and maximum resistance.

2-7

Rosemount 8750WA

1.0

0.8

0.6

0.4

0.2

0

0

10

20 30

40

50

Power Supply (Volts)

Supply Current (Amps)

Table 2-1. Length of Annealed
Copper (cu) Wires

Table 2-2. Length of
Hand-drawn Copper (cu) Wires

Types of Power

Supply Wires

Wire

Gauge

20 0.01015

18 0.006385

16 0.004016

14 0.002525

12 0.001588

10 0.000999

Wire

Gauge

18 0.00664

16 0.004176

14 0.002626

12 0.001652

10 0.01039

Annealed Cu

milliohms/ft

(milliohms/m)

(0.033292)

(0.020943)

(0.013172)

(0.008282)

(0.005209)

(0.003277)

Types of Power

Supply Wires

Annealed Cu

milliohms/ft

(milliohms/m)

(0.021779)

(0.013697)

(0.008613)

(0.005419)

(0.003408)

42 V dc

Supply ft (m)

1478
(451)

2349
(716)

3735

(1139)

5941

(1811)

9446

(2880)
15015

(4578)

Each Corresponding Power Supply Source

42 V dc

Supply ft (m)

2259
(689)

3592

(1095)

5712

(1741)

9080

(2768)
14437

(4402)

Reference Manual

00809-0100-4750, Rev AA

Maximum Length of the Wire for Each

Corresponding Power Supply Source

30 V dc

Supply ft (m)

887

(270)
1410

(430)
2241

(683)
3564

(1087)

5668

(1728)

9009

(2747)

Maximum Length of the Wire for

30 V dc

Supply ft (m)

1355
(413)

2155
(657)

3427

(1045)

5448

(1661)

8662

(2641)

20 V dc

Supply ft (m)

394

(120)

626

(191)

996

(304)
1584

(483)
2519

(768)
4004

(1221)

20 V dc

Supply ft (m)

602

(184)

958

(292)
1523

(464)
2421

(738)
3850

(1174)

July 2009

12.5 V dc

Supply ft (m)

25
(8)

39

(12)

62

(19)

99

(30)
157

(48)
250

(76)

12.5 V dc

Supply ft (m)

38

(11)

60

(18)

95

(29)
151

(46)
241

(73)

Figure 2-4. Supply Current
versus Input Voltage

2-8

Reference Manual

Transmitter

Power Cable

ac Neutral or dc

ac Line or dc+

ac Ground or
dc Ground

Fuse

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Installation Category The installation category for the Rosemount 8750WA12 is

(Overvoltage) Category II.

Overcurrent Protection The Rosemount 8750WA12 Flowmeter Transmitter requires overcurrent

protection of the supply lines. Maximum ratings of overcurrent devices are as
follows:

Power System Fuse Rating Manufacturer

90–250 V ac 1 Amp, Quick Acting Bussman AGCI or Equivalent

12-42 V dc 3 Amp, Quick Acting Bussman AGC3 or Equivalent

OPTIONS, CONSIDERATIONS, AND PROCEDURES

Connect Transmitter
Power

Figure 2-5. Transmitter Power
Connections

If your application of the 8750WA12 includes the use of options such as
multidrop communications, positive zero return (PZR), auxiliary output
control, or pulse output, certain requirements may apply in addition to those
previously listed. Be prepared to meet these requirements before attempting
to install and operate the Rosemount 8750WA12.

To connect power to the transmitter, complete the following steps.

1. Ensure that the power source and connecting cable meet the
requirements outlined on page 2-8.

2. Turn off the power source.

3. Open the power terminal cover.

4. Run the power cable through the conduit to the transmitter.

5. Loosen the terminal guard for terminals L1 and N.

6. Connect the power cable leads as shown in Figure 2-5.

a. Connect ac Neutral or dc- to terminal N.

b. Connect ac Line or dc+ to terminal L1.

c. Connect ac Ground or dc Ground to the ground screw mounted on

the transmitter enclosure.

Connect 4–20 mA Loop
External Power Source

The 4–20 mA output loop provides the process variable output from the
transmitter. Its signal may be powered internally or externally. The default

position of the internal/external analog power switch is in the internal position.

The user-selectable power switch is located on the electronics board.

2-9

Rosemount 8750WA

–4–20 mA power

+4–20 mA power

Fuse

Reference Manual

00809-0100-4750, Rev AA

July 2009

Internal

The 4–20 mA analog power loop may be powered from the transmitter
itself. Resistance in the loop must be 1,000 ohms or less. If a Handheld
Communicator or control system will be used, it must be connected across
a minimum of 250 ohms resistance in the loop.

External

HART multidrop installations require a 10–30 V dc external power source
(see Multidrop Communications on page 3-16). If a Handheld
Communicator or control system is to be used, it must be connected
across a minimum of 250 ohms resistance in the loop.

To connect external power to the 4–20 mA loop, complete the
following steps.

1. Ensure that the power source and connecting cable meet the
requirements outlined above and in Electrical Considerations on page
2-7.

2. Turn off the transmitter and analog power sources.

3. Run the power cable into the transmitter.

4. Connect –dc to Terminal 8.

5. Connect +dc to Terminal 7.

Figure 2-6. 4–20 mA Loop
Power Connections

Connect Pulse Output
Power Source

Refer to Figure 2-6 on page 2-10.

The pulse output function provides an isolated switch-closure frequency
signal that is proportional to the flow through the sensor. The signal is typically
used in conjunction with an external totalizer or control system. The following
requirements apply:

Supply Voltage: 5 to 24 V dc

Load Resistance: 1,000 to 100 k ohms (typical

Pulse Duration: 1.5 to 500 msec (adjustable), 50% duty cycle below 1.5 msec

Maximum Power: 2.0 watts up to 4,000 Hz and 0.1 watts at 10,000 Hz

Switch Closure: solid state switch

The pulse output option requires an external power source. Complete the
following steps to connect an external power supply.

 5 k)

2-10

Reference Manual

Electro-mecha

nical Counter

5–28 V dc

Power

Supply

+

–

–

–

+ +

Electronic

Counter

5–28 V dc

Power

Supply

1k to 100 k

Typical 5 k

–

+

+

–

+

–

00809-0100-4750, Rev AA
July 2009

Figure 2-7. Connecting to a
Electromechanical
Totalizer/Counter

Rosemount 8750WA

1. Ensure that the power source and connecting cable meet the
requirements outlined previously.

2. Turn off the transmitter and pulse output power sources.

3. Run the power cable to the transmitter.

4. Connect –dc to terminal 6.

5. Connect +dc to terminal 5.

Refer to Figure 2-7 and Figure 2-8.

Figure 2-8. Connecting to a
Electronic Totalizer/Counter
without Integral Power Supply

Connect Auxiliary
Channel 1

Auxiliary channel 1 can be configured as either a digital input or a digital
output. When configured as an input, the following requirements apply:

Supply Voltage: 5 to 28V DC

Maximum Power: 2 watts

Switch Closure: optically isolated solid state switch

Maximum Impedance 2.5 k 

When using channel 1 as a digital input, the power source and the control
relay must be connected to the transmitter. See Figure 2-9 for more details on
this connection.

2-11

Rosemount 8750WA

DC–

DC+

Fuse

Control Relay
or Input

Reference Manual

00809-0100-4750, Rev AA

July 2009

When configured as an output, the following requirements apply:
Supply Voltage: 5 to 28V DC

Maximum Power: 2 watts

Switch Closure: optically isolated solid state switch

When using channel 1 as a digital output, the power source must be
connected to the transmitter. See Figure 2-10 for more details on this
connection.

When connecting power to channel 1, complete the following steps:

1. Ensure that the power source and connecting cable meet the
requirements outlined previously.

2. Turn off the transmitter and auxiliary power sources.

3. Run the power cable to the transmitter.

4. Connect –DC to terminal 10.

5. Connect +DC to terminal 9.

Figure 2-9. Connect Digital Input
1 to Relay or Input to Control
System

Connect Auxiliary
Channel 2

Auxiliary channel 2 is configured to provide a digital output based on the
configuration parameters set in the transmitter.

The following requirements apply to this channel:
Supply Voltage: 5 to 28V DC

Maximum Power: 2 watts

Switch Closure: optically isolated solid state switch

When connecting power to channel 2, complete the following steps:

1. Ensure that the power source and connecting cable meet the
requirements outlined previously.

2. Turn off the transmitter and auxiliary power sources.

3. Run the power cable to the transmitter.

4. Connect –DC to terminal 20.

5. Connect +DC to terminal 16.

2-12

See Figure 2-10 for more details on this connection.

Reference Manual

Coil Drive
and
Electrode
Cables

Power

Power

Outputs

Outputs

Coil Drive
and
Electrode
Cables

Power

Outputs

Power

Outputs

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Figure 2-10. Connecting Digital
Outputs

SENSOR CONNECTIONS This section covers the steps required to physically install the transmitter

including wiring and calibration.

Rosemount Sensors To connect the transmitter to a non-Rosemount sensor, refer to the

appropriate wiring diagram in Appendix D: Wiring Diagrams. The calibration
procedure listed is not required for use with Rosemount sensors.

Transmitter to Sensor
Wiring

Figure 2-11. Conduit Preparation

Flanged and wafer sensors have two conduit ports. Either one may be used
for both the coil drive and electrode cables. Use the stainless steel plug that is
provided to seal the unused conduit port.

A single dedicated conduit run for the coil drive and electrode cables is
needed between a sensor and a remote transmitter. Bundled cables in a
single conduit are likely to create interference and noise problems in your
system. Use one set of cables per conduit run. See Figure 2-11 for proper
conduit installation diagram and Table 2-3 for recommended cable. For
integral and remote wiring diagrams refer to Figure 2-12.

Correct Incorrect

2-13

Rosemount 8750WA

Reference Manual

00809-0100-4750, Rev AA

July 2009

Table 2-3. Cable Requirements

Description Units Part Number

Signal Cable (20 AWG) Belden 8762, Alpha 2411 equivalent ftm08750WA12-0061

Coil Drive Cable (14 AWG) Belden 8720, Alpha 2442 equivalent ftm08750WA12-0060

Combination Signal and Coil Drive Cable (18 AWG)

(1) For remote mount installations, combination signal and coil drive cable should be limited t o less than

300 ft. (100 m).

(1)

Rosemount recommends using the combination signal and coil drive for N5
approved sensors for optimum performance.

Remote transmitter installations require equal lengths of signal and coil drive
cables. Integrally mounted transmitters are factory wired and do not require
interconnecting cables.

-0001
08750WA12-0061

-0003

-0001
08750WA12-0060

-0003

ftm08750WA12-0752

-0001
08750WA12-0752

-0003

Sensor to Remote Mount
Transmitter Connections

Figure 2-12. Wiring Diagram

Lengths from 5 to 1,000 feet (1.5 to 300 meters) may be specified, and will be
shipped with the sensor.

Connect coil drive and electrode cables as shown in Figure 2-12.

Do not connect ac power to the sensor or to terminals 1 and 2 of the
transmitter, or replacement of the electronics board will be necessary.

2-14

Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA12

Transmitter

11

2 2

17 17

18 18

19 19

Rosemount 8750WA

Rosemount 8705/8707/8711/8721 sensors

2-15

Rosemount 8750WA

Reference Manual

00809-0100-4750, Rev AA

July 2009

2-16

Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Section 3 Installation of the 8750WA32

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 3-1

Transmitter Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-2

Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 3-2

Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . .page 3-3

Options, Considerations, and Procedures . . . . . . . . . . . .page 3-9

Sensor Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 3-17

This section covers the steps required to physically install the magnetic
flowmeter. Instructions and procedures in this section may require special
precautions to ensure the safety of the personnel performing the operations.
Please refer to the following safety messages before performing any
operation in this section.

SAFETY MESSAGES This symbol is used throughout this manual to indicate that special attention

to warning information is required.

Failure to follow these installation guidelines could result in death or serious injury:

Installation and servicing instructions are for use by qualified personnel only. Do not perform
any servicing other than that contained in the operating instructions, unless qualified. Verify
that the operating environment of the sensor and transmitter is consistent with the
appropriate hazardous area approval.

Do not connect a Rosemount 8750WA32 to a non-Rosemount sensor.

Explosions could result in death or serious injury:

Installation of this transmitter in an explosive environment must be in accordance with the
appropriate local, national, and international standards, codes, and practices. Please review
the approvals section of this reference manual for any restrictions associated with a safe
installation.

Before connecting a handheld communicator in an explosive atmosphere, make sure the
instruments in the loop are installed in accordance with intrinsically safe or non-incendive
field wiring practices.

Electrical shock can result in death or serious injury

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

www.rosemount.com

Rosemount 8750WA

Reference Manual

00809-0100-4750, Rev AA

July 2009

The sensor liner is vulnerable to handling damage. Never place anything through the sensor
for the purpose of lifting or gaining leverage. Liner damage can render the sensor useless.

To avoid possible damage to the sensor liner ends, do not use metallic or spiral-wound
gaskets. If frequent removal is anticipated, take precautions to protect the liner ends. Short
spool pieces attached to the sensor ends are often used for protection.

Correct flange bolt tightening is crucial for proper sensor operation and life. All bolts must be
tightened in the proper sequence to the specified torque limits. Failure to observe these
instructions could result in severe damage to the sensor lining and possible sensor
replacement.

Emerson Process Management can supply lining protectors to prevent liner damage during
removal, installation, and excessive bolt torquing.

TRANSMITTER SYMBOLS

Mechanical
Considerations

Caution symbol — check product documentation for details

Protective conductor (grounding) terminal

Before installing the Rosemount 8750WA32 Magnetic Flowmeter Transmitter,
there are several pre-installation steps that should be completed to make the
installation process easier:

• Identify the options and configurations that apply to your application

• Set the hardware switches if necessary

• Consider mechanical, electrical, and environmental requirements

The mounting site for the 8750WA32 transmitter should provide enough room
for secure mounting, easy access to conduit ports, full opening of the
transmitter covers, and easy readability of the LOI screen (see Figure 3-1).
The transmitter should be mounted in a manner that prevents moisture in
conduit from collecting in the transmitter.

If the 8750WA32 is mounted remotely from the sensor, it is not subject to
limitations that might apply to the sensor.

3-2

Reference Manual

5.82

(148)

6.48 (165)

7.49 (190)
LOI Cover

4.97

(126)

8.81

(224)

3.00
(76)

3.07
(78)

4.97

(126)

1

/2”-14 NPT Electrical

Conduit Connections

(2 places with a 3rd

optional)

1

/2”-14 NPT Remote Junction

Box Conduit Connections (2

places)

00809-0100-4750, Rev AA
July 2009

Figure 3-1. Rosemount 8750WA32 Dimensional Drawing

Rosemount 8750WA

Environmental
Considerations

To ensure maximum transmitter life, avoid temperature extremes and
vibration. Typical problem areas include:

• high-vibration lines with integrally mounted transmitters

• warm-climate installations in direct sunlight

• outdoor installations in cold climates.

Remote-mounted transmitters may be installed in the control room to protect
the electronics from a harsh environment and provides easy access for

INSTALLATION PROCEDURES

configuration or service.

Rosemount 8750WA32 transmitters require external power so there must be
access to a suitable power source.

Rosemount 8750WA32 installation includes both detailed mechanical and
electrical installation procedures.

Mount the Transmitter Remote-mounted transmitters may be mounted on a pipe up to two inches in

diameter or against a flat surface.

Pipe Mounting

To mount the transmitter on a pipe:

1. Attach the mounting bracket to the pipe using the mounting hardware.

2. Attach the 8750WA32 to the mounting bracket using the mounting
screws.

3-3

Rosemount 8750WA

Reference Manual

00809-0100-4750, Rev AA

July 2009

Surface Mounting

To surface mount the transmitter:

1. Attach the 8750WA32 to the mounting location using the mounting
screws.

Identify Options and
Configurations

The standard application of the 8750WA32 includes a 4-20 mA output and
control of the sensor coils. Other applications may require one or more of the
following configurations or options:

• Multidrop Communication (locks the 4-20 mA output to 4 mA)

• HART Communication

• Pulse Output

• Digital Output

• Digital Input

Additional options may apply. Be sure to identify those options and
configurations that apply to your situation, and keep a list of them nearby for
consideration during the installation and configuration procedures.

Hardware Switches The 8750WA32 electronics board is equipped with four user-selectable

hardware switches. These switches set the Failure Alarm Mode,
Internal/External Analog Power, Transmitter Security, and Internal/External
Pulse Power. The standard configuration for these switches when shipped
from the factory is as follows:

Failure Alarm Mode: HIGH

Internal/External Analog Power: INTERNAL

Transmitter Security: OFF

Internal/External Pulse Power EXTERNAL

3-4

Definitions of these switches and their functions are provided below. If you
determine that the settings must be changed, see below.

Failure Alarm Mode

If the 8750WA32 experiences a catastrophic failure in the electronics, the
current output can be driven high (23.25 mA) or low (3.75 mA). The switch is

set in the HIGH (23.25 mA) position when it is shipped from the factory.

Internal/External Analog Power

The 8750WA32 4–20 mA loop may be powered internally or by an external
power supply. The internal/external power supply switch determines the
source of the 4–20 mA loop power.

Transmitters are shipped from the factory with the switch set in the

INTERNAL position.

The external power option is required for multidrop configurations. A 10–30 V
DC external supply is required and the 4-20 mA power switch must be set to

the EXTERNAL position. For further information on 4–20 mA external power,

see “Connect 4–20 mA Loop External Power Source” on page 3-10.

Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Transmitter Security

The security switch on the 8750WA32 allows the user to lock out any
configuration changes attempted on the transmitter. No changes to the

configuration are allowed when the switch is in the ON position. The flow rate

indication and totalizer functions remain active at all times.

With the switch in the ON position, you may still access and review any of the

operating parameters and scroll through the available choices, but no actual

data changes are allowed. Transmitter security is set in the OFF position

when shipped from the factory.

Internal/External Pulse Power

The 8750WA32 pulse loop may be powered internally or by an external power
supply. The internal/external power supply switch determines the source of
the pulse loop power.

Transmitters are shipped from the factory with the switch set in the

EXTERNAL position.

A 5-28 V DC external supply is required when the pulse power switch is set to

the EXTERNAL position. For further information on the pulse external power,

see “Connect Pulse Output Power Source” on page 3-11.

Changing Hardware Switch Settings

In most cases, it is not necessary to change the setting of the hardware
switches. If you need to change the switch settings, complete the steps
below:

NOTE

The hardware switches are located on the top side of the electronics board
and changing their settings requires opening the electronics housing. If
possible, carry out these procedures away from the plant environment in
order to protect the electronics.

1. Disconnect power to the transmitter.

2. Remove electronics cover.

3. Remove LOI if applicable.

4. Identify the location of each switch (see Figure 3-2).

5. Change the setting of the desired switches with a small screwdriver.

6. Replace the electronics cover.

3-5

Rosemount 8750WA

Figure 3-2. Rosemount
8750WA32 Electronics Board
and Hardware Switches

Reference Manual

00809-0100-4750, Rev AA

July 2009

Conduit Ports and
Connections

Both the sensor and transmitter junction boxes have ports for 1/2-inch NPT
conduit connections. These connections should be made in accordance with
national, local or plant electrical codes. Unused ports should be sealed with
metal plugs and PTFE tape or other thread sealant. Connections should also
be made in accordance with area approval requirements, see examples
below for details. Proper electrical installation is necessary to prevent errors
due to electrical noise and interference. Separate conduits are not necessary
for the coil drive and signal cables connecting the transmitter to the sensor,
but a dedicated conduit line between each transmitter and sensor is required.
A shielded cable must be used.

When installing flanged sensors into an IP68 area. Sensors must be installed
with IP68 cable glands, cable, and conduit to maintain IP68 rating. Unused
conduit connections must be properly sealed to prevent water ingress. For
added protection, dielectric gel can be used to pot the sensor terminal block.

Conduit Cables Run the appropriate size cable through the conduit connections in your

magnetic flowmeter system. Run the power cable from the power source to
the transmitter. Do not run power cables and output signal cables in the same
conduit. For remote mount installations, run the coil drive and electrode
cables between the flowmeter and transmitter. Refer to Electrical
Considerations for wire type. Prepare the ends of the coil drive and electrode
cables as shown in Figure 3-3. Limit the unshielded wire length to 1-inch on
both the electrode and coil drive cables. Excessive lead length or failure to
connect cable shields can create electrical noise resulting in unstable meter
readings.

3-6

Reference Manual

NOTE
Dimensions are in
inches
(millimeters).

1.00
(26)

Cable Shield

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Figure 3-3. Cable Preparation
Detail

Electrical Considerations Before making any electrical connections to the Rosemount 8750WA32,

consider the following standards and be sure to have the proper power
supply, conduit, and other accessories. When preparing all wire connections,
remove only the insulation required to fit the wire completely under the
terminal connection. Removal of excessive insulation may result in an
unwanted electrical short to the transmitter housing or other wire connections.

Transmitter Input Power

The 8750WA32 transmitter is designed to be powered by 90-250 V AC, 50–60
Hz or 12–42 V DC. The twelfth digit in the transmitter model number
designates the appropriate power supply requirement.

Model Number Power Supply Requirement

1 90-250 V AC
2 12-42 V DC

Supply Wire Temperature Rating

Use 14 to 18 AWG wire rated for the proper temperature of the application.
For connections in ambient temperatures exceeding 140 °F (60 °C), use
wire rated to at least 194 °F (90 °C).

Disconnects

Connect the device through an external disconnect or circuit breaker.
Clearly label the disconnect or circuit breaker and locate it near the
transmitter.

Requirements for 90-250 V AC Power Supply

Wire the transmitter according to national, local, and plant electrical
requirements for the supply voltage. In addition, follow the supply wire and
disconnect requirements on page 3-9.

Requirements for 12-42 V DC Power Supply

Units powered with 12-42 V DC may draw up to 1 amp of current. As a result,
the input power wire must meet certain gauge requirements.

3-7

Rosemount 8750WA

Maximum Resis cetan

Supply Voltage 12VDC

1amp

---------------------------------------------------------------- --------=

Table 3-1. Length of Annealed
Copper (Cu) Wires

Reference Manual

00809-0100-4750, Rev AA

July 2009

Figure 3-4 shows the supply current for each corresponding supply voltage.
For combinations not shown, you can calculate the maximum distance given
the supply current, the voltage of the source, and the minimum start-up
voltage of the transmitter, 12 V DC, using the following equation:

Use Table 3-1 and Table 3-2 to determine the maximum wire length allowable
for your power supply and maximum resistance.

Types of Power

Supply Wires

Wire

Gauge

20 0.01015

18 0.006385

16 0.004016

14 0.002525

12 0.001588

10 0.000999

Annealed Cu

milliohms/ft

(milliohms/m)

(0.033292)

(0.020943)

(0.013172)

(0.008282)

(0.005209)

(0.003277)

42 V DC

Supply ft (m)

Maximum Length of the Wire for Each

Corresponding Power Supply Source

30 V DC

Supply ft (m)

1478
(451)

2349
(716)

3735

(1139)

5941

(1811)

9446

(2880)
15015

(4578)

887

(270)
1410

(430)
2241

(683)
3564

(1087)

5668

(1728)

9009

(2747)

20 V DC

Supply ft (m)

394

(120)

626

(191)

996

(304)
1584

(483)
2519

(768)
4004

(1221)

12.5 V DC

Supply ft (m)

25
(8)

39

(12)

62

(19)

99

(30)
157

(48)
250

(76)

Table 3-2. Length of
Hand-drawn Copper (Cu) Wires

Types of Power

Supply Wires

Wire

Gauge

18 0.00664

16 0.004176

14 0.002626

12 0.001652

10 0.01039

Annealed Cu

milliohms/ft

(milliohms/m)

(0.021779)

(0.013697)

(0.008613)

(0.005419)

(0.003408)

Each Corresponding Power Supply Source

42 V DC

Supply ft (m)

2259
(689)

3592

(1095)

5712

(1741)

9080

(2768)
14437

(4402)

Maximum Length of the Wire for

30 V DC

Supply ft (m)

1355
(413)

2155
(657)

3427

(1045)

5448

(1661)

8662

(2641)

20 V DC

Supply ft (m)

602

(184)

958

(292)
1523

(464)
2421

(738)
3850

(1174)

12.5 V DC

Supply ft (m)

38

(11)

60

(18)

95

(29)
151

(46)
241

(73)

3-8

Reference Manual

Power Supply (Volts)

I = 10/V
I = Supply current requirement (Amps)
V = Power supply voltage (Volts)

Supply Current (Amps)

12 18

24

30

36

42

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Figure 3-4. Supply Current
versus Input Voltage

Installation Category The installation category for the Rosemount 8750WA32 is (overvoltage)

Category II.

Overcurrent Protection The Rosemount 8750WA32 Flowmeter Transmitter requires overcurrent

protection of the supply lines. Maximum ratings of overcurrent devices are as
follows:

Power System Fuse Rating Manufacturer

95-220 V ac 1 Amp, Quick Acting Bussman AGCI or Equivalent

12-42 V dc 3 Amp, Quick Acting Bussman AGCI or Equivalent

OPTIONS, CONSIDERATIONS, AND PROCEDURES

Connect Transmitter
Power

If your application of the 8750WA32 includes the use of options such as
multidrop communications, DI/DO, or pulse output, certain requirements may
apply in addition to those previously listed. Be prepared to meet these
requirements before attempting to install and operate the Rosemount
8750WA32.

To connect power to the transmitter, complete the following steps.

1. Ensure that the power source and connecting cable meet the
requirements outlined on page 3-8.

2. Turn off the power source.

3. Open the power terminal cover.

4. Run the power cable through the conduit to the transmitter.

5. Connect the power cable leads as shown in Figure 3-5.
a. Connect AC Neutral or DC- to terminal 9.

b. Connect AC Line or DC+ to terminal 10.

c. Connect AC Ground or DC Ground to the ground screw mounted

inside the transmitter enclosure.

3-9

Rosemount 8750WA

AC Line or DC +

Transmitter
Power Cable

AC Neutral or DC –

AC or DC
Ground

Power Supply (Volts)

Load (Ohms)

Operating

Region

600

500

0

10.8

30

Figure 3-5. AC Transmitter
Power Connections

Reference Manual

00809-0100-4750, Rev AA

July 2009

Connect 4–20 mA Loop
External Power Source

Figure 3-6. DC Load Limitations
(Analog Output)

The 4–20 mA output loop provides the process variable output from the
transmitter. The analog output may be powered internally or externally. The
default position of the internal/external analog power switch is in the

INTERNAL position. The user-selectable power switch is located on the

electronics board. The analog output is galvanically isolated from ground.

R

= 31.25 (Vps – 10.8)

max

= Power Supply Voltage (Volts)

V

ps

R

= Maximum Loop Resistance (Ohms)

max

Internal

The 4–20 mA analog power loop may be powered from the transmitter
itself. Resistance in the loop must be 600 ohms or less. If a HART
communication device or control system will be used, it must be connected
across a minimum of 250 ohms resistance in the loop.

3-10

Reference Manual

–4–20 mA power

+4–20 mA power

00809-0100-4750, Rev AA
July 2009

Figure 3-7. 4–20 mA Loop
Power Connections

Rosemount 8750WA

External

HART multidrop installations require a 10–30 V DC external power source.
Resistance in the loop must be 1000 ohms or less. If a HART
communication device or control system is to be used, it must be
connected across a minimum of 250 ohms resistance in the loop.

To connect external power to the 4–20 mA loop, complete the
following steps.

1. Ensure that the power source and connecting cable meet the
requirements outlined above and in “Electrical Considerations” on
page 3-7.

2. Turn off the transmitter and analog power sources.

3. Run the power cable into the transmitter.

4. Connect -4-20 mA power to Terminal 1.

5. Connect +4-20 mA power to Terminal 2.

Refer to Figure 3-7 on page 3-11.

Connect Pulse Output
Power Source

The pulse output function provides a galvanically isolated switch-closure
frequency signal that is proportional to the flow through the sensor. The signal
is typically used in conjunction with an external totalizer or control system.
The default position of the internal/external pulse power switch is in the

EXTERNAL position. The user-selectable power switch is located on the

electronics board.

3-11

Rosemount 8750WA

Reference Manual

00809-0100-4750, Rev AA

July 2009

External

For transmitters with the internal/external pulse power switch set in the

EXTERNAL position, the following requirements apply.

Supply Voltage: 5 to 28 V DC

Load Resistance: 1,000 to 100 k ohms (typical

Pulse Duration: 1.5 to 500 msec (adjustable), 50% duty cycle below 1.5 msec

Maximum Power: 2.0 watts up to 4,000 Hz and 0.1 watts at 10,000 Hz

Switch Closure: solid state switch

Complete the following steps to connect an external power supply.

1. Ensure that the power source and connecting cable meet the
requirements outlined previously.

2. Turn off the transmitter and pulse output power sources.

3. Run the power cable to the transmitter.

4. Connect – DC to terminal 3.

5. Connect + DC to terminal 4.

 5 k)

Refer to Figure 3-8 and Figure 3-9.

Internal

The pulse power loop may be powered from the transmitter itself. Supply
voltage from the transmitter is 10 V. Refer to Figure 3-8 and Figure 3-9 and
connect the transmitter directly to the counter.

1. Turn off the transmitter.

2. Connect – DC to terminal 3.

3. Connect + DC to terminal 4.

3-12

Reference Manual

Electro-mechanical

Counter

5–28 V DC

Power

Supply

+

–

–

+

Electronic

Counter

5–28 V DC

Power

Supply

–

+

+

–

1k to 100k

typical  5k

00809-0100-4750, Rev AA
July 2009

Figure 3-8. Connecting to a
Electromechanical
Totalizer/Counter

Rosemount 8750WA

Figure 3-9. Connecting to a
Electronic Totalizer/Counter
without Integral Power Supply

Connect Digital or
Discrete Output

The digital output control function allows you to externally signal a zero flow,
reverse flow, empty pipe, or transmitter fault condition. The following
requirements apply:

3-13

Rosemount 8750WA

Control Relay

or Input

5-28 V DC

Power Supply

Terminal 8: DO (+)

Terminal 7: DO (-)

Part Number: International Rectifier PVA1352

Transmitter Circuitry

Reference Manual

00809-0100-4750, Rev AA

July 2009

Supply Voltage: 5 to 28V DC

Maximum Power: 2 watts

Switch Closure: optically isolated solid state switch

If you are using digital output control, you need to connect the power source
and control relay to the transmitter. To connect external power for digital
output control, complete the steps:

1. Ensure that the power source and connecting cable meet the
requirements outlined previously.

2. Turn off the transmitter and digital power sources.

3. Run the power cable to the transmitter.

4. Connect –DC to terminal 7.

5. Connect +DC to terminal 8.

Refer to Figure 3-10.

Figure 3-10. Connect Digital
Output to Relay or Input to
Control System

Figure 3-11. Digital Output
Schematic

3-14

Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Connect Digital Input The Digital Input can provide positive zero return (PZR), net totalizer reset, or

transmitter reset. The following requirements apply:
Supply Voltage: 5 to 28V DC

Maximum Power: 2 watts

Switch Closure: optically isolated solid state switch

Input Impedance: 2.5 k

To connect the Digital Input, complete the following steps.

1. Ensure that the power source and connecting cable meet the
requirements outlined previously.

2. Turn off the transmitter and digital power sources.

3. Run the power cable to the transmitter.

4. Run the 5-28 V DC signal cable to the transmitter.

5. Connect –DC to terminal 5.

6. Connect +DC to terminal 6.

Refer to Figure 3-12.

Figure 3-12. Connecting Digital
Input

NOTE

For installations where Digital Input (DI) is required and the analog output is
not required, the DI circuit can be powered by the internal analog source. To
wire this connection, connect terminal 1 (-mA) to terminal 5 (-DI), and connect
terminal 2 (+mA) to terminal 6 (+DI) with the relay contact in series.

Relay Contact or Control

System Output

5-28 V DC

Power Supply

3-15

Rosemount 8750WA

Terminal 6: DI (+)Terminal 6: DI (+)

Terminal 5: DI (-)Terminal 5: DI (-)

Part Number: Infineon LH1529Part Number: Infineon LH1529

2.5 k2.5 k

RinRin

Transmitter CircuitryTransmitter Circuitry

Figure 3-13. Digital Input
Schematic

Reference Manual

00809-0100-4750, Rev AA

July 2009

Figure 3-14. Digital Input
Operating Range

30

25

20

15

Supply Voltage

10

Digital Input Operating Range

5

0

0

2.5

5

7.5 10

Series Resistance Ωin + Ωext (Kohms)

12.5 15

3-16

Reference Manual

Coil Drive
and
Electrode
Cables

Power

Power

Outputs

Outputs

Coil Drive
and
Electrode
Cables

Power

Outputs

Power

Outputs

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

SENSOR CONNECTIONS This section covers the steps required to physically install the transmitter

including wiring and calibration.

Rosemount Sensors To connect the transmitter to a non-Rosemount sensor, refer to the

appropriate wiring diagram in “Universal Flowtube Sensor Wiring Diagrams”
on page E-1. The calibration procedure listed is not required for use with
Rosemount sensors.

Transmitter to Sensor
Wiring

Figure 3-15. Conduit
Preparation

Correct Incorrect

Flanged and wafer sensors have two conduit ports as shown in Figure 3-15.
Either one may be used for both the coil drive and electrode cables. Use the
stainless steel plug that is provided to seal the unused conduit port. Use
Teflon tape or thread sealant appropriate for the installation when sealing the
conduit.

A single dedicated conduit run for the coil drive and electrode cables is
needed between a sensor and a remote transmitter. Bundled cables in a
single conduit are likely to create interference and noise problems in your
system. Use one set of cables per conduit run. See Figure 3-15 for proper
conduit installation diagram and Table 3-3 for recommended cable. For
integral and remote wiring diagrams refer to Figure 3-17.

Table 3-3. Cable Requirements

Description Units Part Number

Signal Cable (20 AWG) Belden 8762, Alpha 2411 equivalent ft

Coil Drive Cable (14 AWG) Belden 8720, Alpha 2442 equivalent ft

Combination Signal and Coil Drive Cable (18 AWG)

m

(1)

m

ft

m

08750WA12-0061-0001
08750WA12-0061-0003
08750WA12-0060-0001
08750WA12-0060-0003
08750WA12-0752-0001
08750WA12-0752-0003

3-17

Reference Manual

1.00
(26)

NOTE
Dimensions are in
inches (millimeters).

Cable Shield

00809-0100-4750, Rev AA

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(1) For remote mount installations, combination signal and coil drive cable should be limited to less than 330 ft. (100 m).

July 2009

Rosemount recommends using the combination signal and coil drive for N5
approved sensors for optimum performance.

Remote transmitter installations require equal lengths of signal and coil drive
cables. Integrally mounted transmitters are factory wired and do not require
interconnecting cables.

Lengths from 5 to 1,000 feet (1.5 to 300 meters) may be specified, and will be
shipped with the sensor.

Conduit Cables Run the appropriate size cable through the conduit connections in your

magnetic flowmeter system. Run the power cable from the power source to
the transmitter. Run the coil drive and electrode cables between the sensor
and transmitter.

Prepare the ends of the coil drive and electrode cables as shown in Figure
3-16. Limit the unshielded wire length to 1-inch on both the electrode and coil
drive cables.

NOTE

Excessive lead length or failure to connect cable shields can create electrical
noise resulting in unstable meter readings.

Figure 3-16. Cable Preparation
Detail

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Sensor to Remote Mount
Transmitter Connections

Figure 3-17. Wiring Diagram

Connect coil drive and electrode cables as shown in Figure 3-17.

Do not connect AC power to the sensor or to terminals 1 an d 2 of the
transmitter, or replacement of the electronics board will be necessary.

Rosemount 8750WA32

Transmitter

11

2 2

17 17

18 18

19 19

Rosemount 8705/8707/8711/8721 Sensors

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Section 4 Configuration

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1

Installation Check and Guide . . . . . . . . . . . . . . . . . . . . . . page 4-1

LOI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-4

Diagnostic Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 4-6

Process Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 4-6

Basic Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-8

INTRODUCTION This section covers basic operation, software functionality, and configuration

procedures for the Rosemount 8750WA12 Magnetic Flowmeter Transmitter.

The Rosemount 8750WA12 features a full range of software functions for
configuration of output from the transmitter. Software functions are accessed
through the LOI, AMS, a Handheld Communicator, or a control system.
Configuration variables may be changed at any time and specific instructions
are provided through on-screen instructions.

INSTALLATION CHECK AND GUIDE

Table 4-1. Parameters

Basic Set-up Parameters Page

Review page 4-6

Process Variables page 4-6

Basic Setup page 4-8

Flow Units page 4-8

Range Values page 4-11

PV Sensor Calibration Number page 4-12

Totali z e r S e t u p page 4-7

Use this guide to check new installations of Rosemount magnetic flowmeter
systems that appear to malfunction.

Before You Begin
Transmitter

Apply power to your system before making the following transmitter checks.

www.rosemount.com

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1. Verify that the correct sensor calibration number is entered in the
transmitter. The calibration number is listed on the sensor nameplate.

2. Verify that the correct sensor line size is entered in the transmitter.
The line size value is listed on the sensor nameplate.

3. Verify that the analog range of the transmitter matches the analog
range in the control system.

4. Verify that the forced analog output of the transmitter produces the
correct output at the control system.

Sensor

Be sure that power to your system is removed before beginning sensor
checks.

1. For horizontal flow installations, ensure that the electrodes remain

covered by process fluid.

For vertical or inclined installations, ensure that the process fluid

is flowing up into the sensor to keep the electrodes covered by
process fluid.

2. Ensure that the grounding straps on the sensor are connected to
grounding rings, lining protectors, or the adjacent pipe flanges.
Improper grounding will cause erratic operation of the system.

LOCAL OPERATOR INTERFACE

Wiring

1. The signal wire and coil drive wire must be twisted shielded cable.
Emerson Process Management, Rosemount division. recommends
20 AWG twisted shielded cable for the electrodes and 14 AWG
twisted shielded cable for the coils.

2. The cable shield must be connected at both ends of the electrode and
coil drive cables. Connection of the shield at both ends is absolutely
necessary for proper operation.

3. The signal and coil drive wires must be separate cables, unless
Emerson Process Management specified combo cable is used. See
Table 2-3 on page 2-13.

4. The single conduit that houses both the signal and coil drive cables
should not contain any other wires.

Process Fluid

1. The process fluid conductivity should be 5 microsiemens
(5 micro mhos) per centimeter minimum.

2. The process fluid must be free of air and gasses.

3. The sensor should be full of process fluid.

Refer to Section 5 "Maintenance and Troubleshooting" for further information.

The optional Local Operator Interface (LOI) provides an operator
communications center for the 8750WA12D. By using the LOI, the operator
can access any transmitter function for changing configuration parameter
settings, checking totalized values, or other functions. The LOI is integral to
the transmitter housing.

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DISPLAY CONTROL TOTALIZER

TRANSMITTER PARAMETERS

DAT A

ENTRY

FLOW

RATE

TOTALIZE

START

STOP

READ

RESET

TUBE CAL

NO.

TUBE

SIZE

UNITS

AUX.

FUNCTION

ANALOG

OUTPUT

RANGE

PULSE

OUTPUT

SCALING

DAMPING XMTR

INFO

SHIFT

ENTER

INCR.

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Rosemount 8750WA

8750WA12 LOI BASIC FEATURES

Figure 4-1. 8750WA12 Local
Operator Interface Keypad

The basic features of the 8750WA12 LOI include display control, totalizer,
data entry, and transmitter parameters. These features provide control of all
transmitter functions, see Figure 4-1.

Display Control Keys

The display control keys provide control over the variable displayed on the

LOI screen. Push FLOW RATE to display the process variable, or push
TOTALIZE to display the totalized value.

Totalizer Keys

The totalizer keys enable you to start, stop, read, and reset the totalizer.

Data Entry Keys

The data entry keys enable you to move the display cursor, incrementally
increase the value, or enter the selected value.

Transmitter Parameter Keys

The transmitter parameter keys provide direct access to the most common
transmitter parameters and stepped access to the advanced functions of the

8750WA12D through the AUX. FUNCTION key.

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Data Entry The LOI keypad does not have numerical keys. Numerical data is entered by

the following procedure.

1. Access the appropriate function.

2. Use SHIFT to highlight the digit you want to enter or change.

3. Use INCR. to change the highlighted value. For numerical data,
INCR. toggle through the digits 0–9, decimal point, and dash. For
alphabetical data, toggle through the letters of the alphabet A–Z,
digits 0–9, and the symbols ,&, +, -, *, /, $, @,%, and the blank
space. (INCR. is also used to toggle through pre-determined choices

that do not require data entry.)

4. Use SHIFT to highlight other digits you want to change and

change them.

5. Press ENTER.

Selecting Options To select pre-defined software options on the LOI, use the

following procedure:

1. Access the appropriate option.

2. Use SHIFT or INCR. to toggle between the applicable choices.

3. Press ENTER when the desired choice is displayed on the screen.

LOI EXAMPLES Use the TRANSMITTER PARAMETER keys shown in Figure 4-1 to change

the parameters, which are set in one of two ways, table values or select
values.

Table Values:

Parameters such as units, that are available from a predefined list

Select Values:

Parameters that consist of a user-created number or character string, such
as calibration number; values are entered one character at a time using
the data entry keys

Table Value Example Setting the sensor line size:

1. Press SENSOR SIZE.

2. Press SHIFT or INCR. to increase (incrementally) the size to the next

value.

3. When you reach the desired size, press ENTER.

4. Set the loop to manual if necessary, and press ENTER again.

After a moment, the LCD will display the new sensor size and the maximum
flow rate.

Select Value Example Changing the ANALOG OUTPUT RANGE:

1. Press ANALOG OUTPUT RANGE.

2. Press SHIFT to position the cursor.

3. Press INCR. to set the number.

4. Repeat steps 2 and 3 until desired number is displayed.

5. Press ENTER.

4-4

After a moment, the LCD will display the new analog output range.

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Table 4-2. 8750WA12 LOI Data Entry Keys and Functions

Data Entry Keys Function Performed

Shift

Increment

Enter Stores the displayed value previously selected with the SHIFT and INCR. keys

Display Control Keys Function Performed

Flow Rate Displays the user-selected parameters for flow indication

Totalize Displays the present totalized output of the transmitter, and activates the Totalizer group of keys

Start/Stop Starts the totalizing display if it is stopped, and stops the display if it is running

Read/Reset Resets the net totalizing display to zero if it is stopped, and halts the display if the display is running

Transmitter Parameters

Keys

Sensor Cal No. Identifies the calibration number when using Rosemount sensors, or other manufacturers’ sensors calibrated

Sensor Size Specifies the sensor size and identifies the corresponding maximum flow (0.1 - through 80-inch line sizes)

Units Specifies the desired units:

Auxiliary Functions Function

Analog Output Range Sets the desired 20 mA point – must set the sensor size first

Pulse Output Scaling Sets one pulse to a selectable number of volume units – must set the sensor size first

Damping Sets response time (single pole time constant), in seconds, to a step change in flow rate

Transmitter Information Allows you to view and change useful information about the transmitter and sensor

Empty Pipe Tuning Allowable range 3.0 - 2000.0

• Moves the blinking cursor on the display one character to the right

• Scrolls through available values

• Increments the character over the cursor by one

• Steps through all the digits, letters, and symbols that are applicable to the present operation

• Scrolls through available values

The choices, Forward and Reverse totals or Net and Gross totals, are selected in Auxiliary Functions

Function Performed

at the Rosemount factory

Gal/Min Liters/Min
ImpGal/Min CuMeter/Hr
Ft/Sec Meters/Sec
Special (user defined)
For a complete list of available units, see Table 4-3 on page 4-9

Options
Run 8714i
Operating Mode
Coil Pulse Mode
Flow rate Display
Totalizer Display
Tota l i z er U ni t s
Signal Processing
Special Units
Process Density
Aux. Output Control
Reverse Flow Enable
License Key
Diagnostics Enable
8714i Setup
Re-signature Sensor
Recall Last Signature
Empty Pipe
Universal Auto Trim
Low Flow Cutoff
Pulse Width
Analog Output Zero
Analog Output Test
Pulse Output Test
Transmitter Test
4–20 mA Output Trim
Auto Zero
Electronics Trim

Runs the meter verification diagnostic

Normal or Filter

5 or 37 Hz

Flow–% Span, Flow–Totalize, %Span–Totalize

Forward–Reverse or Net–Gross

Configure the totalizer units of measure

On/Off

Volume units, base volume units, conversion, timebase, rate units

Required for units of mass flow

Reverse Flow/Zero Flow

On/Off

Field license advanced functionality

Turn diagnostics On/Off

Configure test criteria parameters

Base line sensor characteristics

Recall previous signature values

Configure empty pipe diagnostic parameters

In-process Sensor Calibration

0.01 ft/s to 1 ft/s

Pulse Width

4 mA Value

Analog Output Loop Test

Pulse Output Loop Test

Test the Transmitter

Adjust the 4–20 mA Output

Zero Sensor for 37 Hz Coil Drive Operation

Transmitter Calibration

Rosemount 8750WA

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DIAGNOSTIC MESSAGES

The following error messages may appear on the LOI screen. See Table 5-1
on page 5-2 for potential causes and corrective actions for these errors:

• Electronics Failure

• Coil open circuit

• Digital trim failure

• Auto zero failure

• Auto trim failure

• Flow rate >42 ft/sec

• Analog out of range

• PZR activated

• Empty pipe

• Reverse flow

• Reverse flow indicator
(A flashing letter “R” on the LOI indicates a reverse flow)

• Totalizer indicator
(A flashing letter “T” on the LOI indicates to totalizer is activated)

Review The 8750WA12 includes a capability that enables you to review the

375 375 Fast

Keys

1, 5

configuration variable settings.

The flowmeter configuration parameters set at the factory should be reviewed
to ensure accuracy and compatibility with your particular application of the
flowmeter.

NOTE

If you are using the LOI to review variables, each variable must be accessed
as if you were going to change its setting. The value displayed on the LOI
screen is the configured value of the variable.

PROCESS VARIABLES The process variables measure flow in several ways that reflect your needs

375 Fast Keys 1, 1

and the configuration of your flowmeter. When commissioning a flowmeter,
review each process variable, its function and output, and take corrective
action if necessary before using the flowmeter in a process application

Process Variable (PV) – The actual measured flow rate in the line. Use the

Process Variable Units function to select the units for your application.

Percent of Range – The process variable as a percentage of the Analog

Output range, provides an indication of the current flow measurement in
relation to the configured range of the flowmeter. For example, the Analog
Output range may be defined as 0 gal/min to 20 gal/min. If the measured flow
is 10 gal/min, the percent of range is 50 percent.

Analog Output – The analog output variable provides the analog value for the

flow rate. The analog output refers to the industry standard output in the 4–20
mA range.

Totalizer Setup – Provides a reading of the total flow of the flowmeter since

the totalizer was last reset. The totalizer value should be zero during
commissioning on the bench, and the units should reflect the volume units of
the flow rate. If the totalizer value is not zero, it may need to be reset. This
function also allows for configuration of the totalizer parameters.

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Pulse Output – The pulse output variable provides the pulse value for the flow

rate.

PV - Primary Variable The Primary Variable shows the current measured flow rate. This value

375 Fast Keys 1, 1, 1

8750WA12 LOI Key FLOW RATE

determines the analog output from the transmitter.

PV -% Range The PV% Range shows where in the flow range the current flow value is as a

375 Fast Keys 1, 1, 2

percentage of the configured span.

PV - Analog Output The PV Analog Output displays the mA output of the transmitter

375 Fast Keys 1, 1, 3

corresponding to the measured flow rate.

Totalizer Setup The Totalizer Setup menu allows for the viewing and configuration of the

375 Fast Keys 1, 1, 4

8750WA12 LOI Key AUX. FUNCTION

totalizer parameters.

Totalizer Units

375 Fast Keys 1, 1, 4, 1

8750WA12 LOI Key AUX. FUNCTION

Totalizer units allow for the configuration of the units that the totalized value

will be displayed as. These units are independent of the flow units.

Measured Gross Total

375 Fast Keys 1, 1, 4, 2

8750WA12 LOI Key TOT ALIZE

Measured gross total provides the output reading of the totalizer. This value is

the amount of process fluid that has passed through the flowmeter since the
totalizer was last reset.

NOTE

To reset the measured gross total value, the line size must be changed.

Measured Net Total

375 Fast Keys 1, 1, 4, 3

8750WA12 LOI Key TOT ALIZE

Measured net total provides the output reading of the totalizer. This value is

the amount of process fluid that has passed through the flowmeter since the
totalizer was last reset. When reverse flow is enabled, the net total represents
the difference between the total flow in the forward direction less the total flow
in the reverse direction.

Measured Reverse Total

375 Fast Keys 1, 1, 4, 4

8750WA12 LOI Key TOT ALIZE

Measured reverse total provides the output reading of the totalizer. This value

is the amount of process fluid that has passed through the flowmeter in the
reverse direction since the totalizer was last reset. This value is only totalized
when reverse flow is enabled.

Start Totalizer

375 Fast Keys 1, 1, 4, 5

8750WA12 LOI Key START/STOP

Start totalizer starts the totalizer counting from its current value.

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Stop Totalizer

375 Fast Keys 1, 1, 4, 6

8750WA12 LOI Key START/STOP

Stop totalizer interrupts the totalizer count until it is restarted again. This

feature is often used during pipe cleaning or other maintenance operations.

Reset Totalizer

375 Fast Keys 1, 1, 4, 7

8750WA12 LOI Key READ/RESET

Reset totalizer resets the net totalizer value to zero. The totalizer must be

stopped before resetting.

NOTE

The totalizer value is saved in the Non-Volatile memory of the electronics
every three seconds. Should power to the transmitter be interrupted, the
totalizer value will start at the last saved value when power is re-applied.

Pulse Output The Pulse Output displays the current value of the pulse signal.

375 Fast Keys 1, 1, 5

July 2009

BASIC SETUP The basic configuration functions of the Rosemount 8750WA12 must be set

375 Fast Keys 1, 3

for all applications of the transmitter in a magnetic flowmeter system. If your
application requires the advanced functionality features of the Rosemount
8750WA12, see Section 4 "Operation" of this manual.

Tag Tag is the quickest and shortest way of identifying and distinguishing between

375 Fast Keys 1, 3, 1

8750WA12 LOI Key XMTR INFO

transmitters. Transmitters can be tagged according to the requirements of
your application. The tag may be up to eight characters long.

Flow Units Flow Units set the output units for the Primary Variable which controls the

375 Fast Keys 1, 3, 2

analog output of the transmitter.

Primary Variable Units

375 Fast Keys 1, 3, 2, 1

8750WA12 LOI

Key

UNITS

The Primary Variable Units specifies the format in which the flow rate will be

displayed. Units should be selected to meet your particular metering needs.

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Table 4-3. Options for Flow
Rate Units

Rosemount 8750WA

• ft/sec • B31/sec (1 Barrel = 31.5 gallons)

•m/sec • B31/min (1 Barrel = 31.5 gallons)

• gal/sec • B31/hr (1 Barrel = 31.5 gallons)

• gal/min • B31/day (1 Barrel = 31.5 gallons)

• gal/hr • lbs/sec

• gal/day •lbs/min

•l/sec •lbs/hr

•l/min • lbs/day

• l/hr • kg/sec

• l/day •kg/min

3

/sec • kg/hr

•ft

•ft3/min • kg/day

3

/hr • (s)tons/min

•ft

•ft3/day • (s)tons/hr

3

•m

/sec • (s)tons/day

•m3/min • (m)tons/min

3

•m

/hr • (m)tons/hr

•m3/day • (m)tons/day

• Impgal/sec • Special (User Defined, see

• Impgal/min

• Impgal/hr

• Impgal/day

• B42/sec (1 Barrel = 42 gallons)

• B42/min (1 Barrel = 42 gallons)

• B42/hr (1 Barrel = 42 gallons)

• B42/day (1 Barrel = 42 gallons)

“Special Units” on page 4-9)

Special Units

375 Fast Keys 1, 3, 2, 2

8750WA12 LOI

Key

AUX. FUNCTION

The Rosemount 8750WA12 provides a selection of standard unit
configurations that meet the needs of most applications (see “Flow Units” on
page 4-8). If your application has special needs and the standard
configurations do not apply, the Rosemount 8750WA12 provides the flexibility
to configure the transmitter in a custom-designed units format using the

special units variable.

Special Volume Unit

375 Fast Keys 1, 3, 2, 2, 1

Special volume unit enables you to display the volume unit format to which

you have converted the base volume units. For example, if the special units
are abc/min, the special volume variable is abc. The volume units variable is
also used in totalizing the special units flow.

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Base Volume Unit

375 Fast Keys 1, 3, 2, 2, 2

Base volume unit is the unit from which the conversion is being made. Set this

variable to the appropriate option.

Conversion Number

375 Fast Keys 1, 3, 2, 2, 3

The special units conversion number is used to convert base units to special

units. For a straight conversion of volume units from one to another, the
conversion number is the number of base units in the new unit. For example,
if you are converting from gallons to Drums and there are 55 gallons in a
barrel, the conversion factor is 55.

Base Time Unit

375 Fast Keys 1, 3, 2, 2, 4

Base time unit provides the time unit from which to calculate the special units.

For example, if your special units is a volume per minute, select minutes.

Special Flow Rate Unit

375 Fast Keys 1, 3, 2, 2, 5

Special flow rate unit is a format variable that provides a record of the units to

which you are converting. The Handheld Communicator will display a special
units designator as the units format for your primary variable. The actual
special units setting you define will not appear. Four characters are available
to store the new units designation. The 8750WA12 LOI will display the four
character designation as configured.

Example

To display flow in Drums per hour, and one Drum is equal to 55 gallons, the
procedure would be:

Set the Volume Unit to Drum.
Set the Base Volume Unit to gallons.
Set the Input Conversion Number to 55.
Set the Time Base to Hour.
Set the Rate Unit to DR/H.

Line Size The line size (sensor size) must be set to match the actual sensor connected

375 Fast Keys 1, 3, 3

8750WA12 LOI

Key

sensor SIZE

to the transmitter. The size must be specified in inches according to the
available sizes listed below. If a value is entered from a control system or
Handheld Communicator that does not match one of these figures, the value
will go to the next highest option.

The line size (inches) options are as follows:

4-10

0.1, 0.15, 0.25, 0.30, 0.50, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 14,
16, 18, 20, 24, 28, 30, 32, 36, 40, 42, 44, 48, 54, 56, 60, 64, 72, 80

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Rosemount 8750WA

PV URV
(Upper Range Value)

375 Fast Keys 1, 3, 4

8750WA12 LOI

Key

ANALOG

OUTPUT RANGE

PV LRV
(Lower Range Value)

375 Fast Keys 1, 3, 5

8750WA12 LOI

Key

AUX. FUNCTION

The upper range value (URV), or analog output range, is preset to 30 ft/s at

the factory. The units that appear will be the same as those selected under the
units parameter.

The URV (20 mA point) can be set for both forward or reverse flow rate. Flow
in the forward direction is represented by positive values and flow in the
reverse direction is represented by negative values. The URV can be any
value from –39.3 ft/s to +39.3 ft/s (-12 m/s to +12 m/s), as long as it is at least
1 ft/s (0.3 m/s) from the lower range value (4 mA point). The URV can be set
to a value less than the lower range value. This will cause the transmitter
analog output to operate in reverse, with the current increasing for lower (or
more negative) flow rates.

NOTE

Line size, special units, and density (for mass units of measurement only)
must be selected prior to configuration of URV and LRV.

Set the lower range value (LRV), or 4 mA set point to change the size of the

range (or span) between the URV and LRV. Under normal circumstances, the
LRV should be set to a value near the minimum expected flow rate to
maximize resolution. The LRV must be between
–39.3 ft/s to +39.3 ft/s (-12 m/s to +12 m/s).

NOTE

Line size, special units, and density must be selected prior to configuration of
URV and LRV.

Example

If the URV is greater than the LRV, the analog output will saturate at 3.9 mA
when the flow rate falls below the selected 4 mA point.

The minimum allowable span between the URV and LRV is 1 ft/s (0.3 m/s).
Do not set the LRV within 1 ft/s (0.3 m/s) of the 20 mA point. For example, if
the URV is set to 15.67 ft/s (4.8 m/s) and if the desired URV is greater than
the LRV, then the highest allowable LRV setting would be 14.67 ft/s (4.5 m/s).
If the desired URV is less than the LRV, then the lowest allowable LRV would
be 16.67 ft/s (5.1 m/s).

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Calibration Number The sensor calibration number is a 16-digit number used to identify sensors

375 Fast Keys 1, 3, 6

8750WA12 LOI

Key

sensor CAL NO.

calibrated at the Rosemount factory. The calibration number is also printed
inside the sensor terminal block or on the sensor name plate. The number
provides detailed calibration information to the Rosemount 8750WA12. To
function properly within accuracy specifications, the number stored in the
transmitter must match the calibration number on the sensor exactly.

NOTE

Sensors from manufacturers other than Rosemount Inc. can also be
calibrated at the Rosemount factory. Check the sensor for Rosemount
calibration tags to determine if a 16-digit calibration number exists for your
sensor.

NOTE

Be sure the calibration number reflects a calibration to a Rosemount
reference transmitter. If the calibration number was generated by a means
other than a certified Rosemount flow lab, accuracy of the system may be
compromised.

If your sensor is not a Rosemount sensor and was not calibrated at the
Rosemount factory, contact your Emerson Process Management
representative for assistance.

If your sensor is imprinted with an eight-digit number or a k-factor, check in
the sensor wiring compartment for the sixteen-digit calibration number. If
there is no serial number, contact the factory for a proper conversion.

PV Damping Adjustable between 0.0 and 256 seconds

375 Fast Keys 1, 3, 7

8750WA12 LOI

Key

DAMPING

PV Damping allows selection of a response time, in seconds, to a step

change in flow rate. It is most often used to smooth fluctuations in output.

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8750WA32 LOI BASIC FEATURES

Figure 4-2. Local Operator
Interface Keypad

The basic features of the LOI include 4 navigational arrow keys that are used
to access the menu structure. See Figure 4-1

Data Entry The LOI keypad does not have numerical keys. Numerical data is entered by

the following procedure.

1. Access the appropriate function.

2. Use the key to move to the value to change.

3. Use the UP and DOWN ARROWS to change the highlighted value.

For numerical data, toggle through the digits 0–9, decimal point, and

dash. For alphabetical data, toggle through the letters of the alphabet
A–Z, digits 0–9, and the symbols ,&, +, -, *, /, $, @,%, and the blank
space.

4. Use the to highlight other digits you want to change

and change them.

5. Press “E” (the left arrow key) when all changes are complete to save

the entered values.

LOI EXAMPLES Use the DOWN ARROW to access the menu structure in Table 4-4. Use the

ARROW KEYS to select the desired parameters to review/change.

Parameters are set in one of two ways, Table Values or Select Values.

Table Values:

Parameters such as units, that are available from a predefined list

Select Values:

Parameters that consist of a user-created number or character string, such
as calibration number; values are entered one character at a time using

the ARROW KEYS.

4-13

Rosemount 8750WA

Table Value Example Setting the SENSOR SIZE:

1. Press the DOWN arrow to access the menu.

2. Select the Basic Set Up menu.

3. Select line size from the Basic set-up menu.

4. Press the UP or DOWN arrow to increase/decrease (incrementally)

the sensor size to the next value.

5. When you reach the desired size, press “E” (the left arrow).

6. Set the loop to manual if necessary, and press “E” again.

After a moment, the LCD will display the new sensor size and the maximum
flow rate.

Select Value Example Changing the ANALOG OUTPUT RANGE:

1. Press the DOWN arrow to access the menu.

2. Select the Basic Set Up menu.

3. Using the arrow keys, select PV URV from the Basic Setup menu.

4. Press RIGHT arrow key to position the cursor.

5. Press UP or DOWN to set the number.

6. Repeat steps 2 and 3 until desired number is displayed.

7. Press “E”.

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After a moment, the LCD will display the new analog output range.

Display Lock The 8750WA32 display can be locked to prevent unintentional configuration

changes. The display lock can be activated through a HART communication
device, or by holding the UP arrow for 10 seconds. When the display lock is
activated, DL will appear in the lower left hand corner of the display. To
deactivate the display lock (DL), hold the UP arrow for 10 seconds. Once
deactivated, the DL will no longer appear in the lower left hand corner of the
display.

Start Totalizer To start the totalizer, press the DOWN arrow to display the totalizer screen

and press “E” to begin totalization. A symbol will flash in the lower right
hand corner indicating that the meter is totalizing.

Stop Totalizer To stop the totalizer, press the DOWN arrow to display the totalizer screen

and press “E” to end totalization. The flashing symbol will no longer display
in the lower right hand corner indicating that the meter has stopped totalizing.

Reset Totalizer To reset the totalizer, press the DOWN arrow to display the totalizer screen

and follow the procedure above to stop totalization. Once totalization has

stopped, press the RIGHT arrow key to reset the NET total value to zero.

To reset the gross total value, you must change the line size. See “Line Size”
on page 4-10 for details on how to change the line size.

4-14

Reference Manual

Diag Controls
Basic Diag
A dv anced Di ag
Variables
Trims
Status

E mpty P ipe
Process Noise
G round/W i ri ng
Elec Temp

Self Test
A O L oop T est
Pulse Out Test
E mpty P ipe
Elec Temp

G round/W i ri ng
Process Noise
8714i
4-20 mA V erify
Licensing

R un 8714i
V iew Results
Tube Signature
Test C riteria
M easur ements

Values
R e-S ignature
Recall V alues

Coil R esist
C oil S ignature
E lectr ode R es

No Flow
Flowing, Full
E mpty P ipe

Coil R esist
C oil S ignature
E lectr ode R es

E mpty P ipe
Elec Temp
L ine N oise
5Hz SN R
37Hz SN R
Signal Power
8714i R esults

D/A Trim
Digital T rim
A uto Z ero
Universal Trim

4-20 mA V erify
View Results

Tag
Flow Units
L ine S ize
PV UR V
PV L RV
Cal Number
PV Damping

C oil F requency
Proc Density
PV LSL
PV USL
PV Min Span

Analog
Pulse
DI/DO Config
Totalizer
Reverse Flow
HART

PV UR V
PV L RV
Alarm Type
Test

Pulse Scaling
Pulse Width
Pulse Mode
Test

DI 1
DO 2

Totalize Units
Total Dis

play

Burst Mode
B urst C ommand

F lange T y pe
F lange M atl
E lectr ode T ype
E lectr ode M atl
L iner Material

Software R ev
Final Asmbl #

Tag
Description
Message
Device ID
PV Sensor S/N
Flowtube Tag
Revision Num
M ateri al s

Operating Mode
SP Config
C oi l Fr equency
PV Damping
Lo-Flow Cuto

Flow Display
Total Display
L anguage

More Params
Output C onfi g
LOI Config
Si g Processing
Device Info

PV Units
Special Units
Totalize Units

Diagnostics

Basic Setup

Detail ed Setup

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Table 4-4. 8750WA32
LOI Menu Tree

Rosemount 8750WA

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Section 5 Advanced Functionality of the

8750WA12

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-1

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 5-1

Basic Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 5-2

Advanced Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 5-7

Advanced Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-16

Detailed Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 5-16

INTRODUCTION This section contains information for advanced configuration parameters and

diagnostics.

The software configuration settings for the Rosemount 8750WA12 can be
accessed through a HART-based communicator, Local Operator Interface
(LOI), or through a control system. The software functions for the HART
Communicator are described in detail in Appendix E of the manual. It provides
an overview and summary of communicator functions. For more complete
instructions, see the communicator manual. Before operating the Rosemount
8750WA12 in an actual installation, you should review all of the factory set
configuration data to ensure that they reflect the current application.

DIAGNOSTICS Diagnostics are used to verify that the transmitter is functioning properly, to

375 Fast Keys 1, 2

assist in troubleshooting, to identify potential causes of error messages, and
to verify the health of the transmitter and sensor. Diagnostic tests can be
initiated through the use of a HART-based communications device, the Local
Operator Interface, or through the control system.

Rosemount offers several different diagnostic suites providing various
functionality.

Standard diagnostics included with every Rosemount 8750WA12 transmitter
are Empty Pipe detection, Electronics Temperature monitoring, Coil Fault
detection, and various loop and transmitter tests.

Advanced diagnostics suite option one (DA1 option) contains advanced
diagnostics for High Process Noise detection and Grounding and Wiring fault
detection.

Advanced diagnostics suite option two (DA2 option) contains advanced
diagnostics for the 8714i Meter Verification. This diagnostic is used to verify
the accuracy and performance of the magnetic flowmeter installation.

Diagnostic Controls The diagnostic controls menu provides a centralized location for enabling or

375 Fast Keys 1, 2, 1

LOI Key AUX. FUNCTION

disabling each of the diagnostics that are available. Note that for some
diagnostics to be available, a diagnostics suite package is required.

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Rosemount 8750WA

Reference Manual

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July 2009

Empty Pipe

375 Fast Keys 1, 2, 1, 1

Turn the empty pipe diagnostic on or off as required by the application. For
more details on the empty pipe diagnostic, see Appendix C: "Diagnostics".

High Process Noise

375 Fast Keys 1, 2, 1, 2

Turn the high process noise diagnostic on or off as required by the
application. For more details on the high process noise diagnostic, see
Appendix C: "Diagnostics".

Grounding / Wiring

375 Fast Keys 1, 2, 1, 3

Turn the grounding / wiring diagnostic on or off as required by the application.
For more details on the grounding / wiring diagnostic, see Appendix C:
"Diagnostics".

Electronics Temperature

375 Fast Keys 1, 2, 1, 4

Turn the electronics temperature diagnostic on or off as required by the
application. For more details on the electronics temperature diagnostic, see
Appendix C: "Diagnostics".

Basic Diagnostics The basic diagnostics menu contains all of the standard diagnostics and tests

375 Fast Keys 1, 2, 2

that are available in the 8750WA12 transmitter.

Self Test

375 Fast Keys 1, 2, 2, 1

LOI Key AUX. FUNCTION

The transmitter test initiates a series of diagnostic tests that are not performed
continuously during normal operation. It performs the following tests:

• Display Test

•RAM Test

•PROM Test

During the entire test, all outputs respond to flow signal. The test requires
about ten seconds to complete.

AO Loop Test

375 Fast Keys 1, 2, 2, 2

LOI Key AUX. FUNCTION

The AO Loop test will cause the transmitter to drive the analog output to a
desired electrical current on terminals 7 and 8. The actual loop current can
then be independently measured and compared against the desired level set
in the transmitter. On the LOI, the test will end after five minutes if the
transmitter is not returned to normal operation manually.

5-2

4 mA

375 Fast Keys 1, 2, 2, 2, 1

Fix the analog loop current at 4 mA.

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20 mA

375 Fast Keys 1, 2, 2, 2, 2

Fix the analog loop current at 20 mA.

Simulate Alarm

375 Fast Keys 1, 2, 2, 2, 3

Send the analog output into an alarm mA value. Actual mA value depends on
the alarm configuration.

• Rosemount Standard High Alarm – 22.6 mA

• Rosemount Standard Low Alarm – 3.75 mA

• Namur Compliant High Alarm – 22.6 mA

• Namur Compliant Low Alarm – 3.5 mA

Other

375 Fast Keys 1, 2, 2, 2, 4

Fix the analog loop current to some other mA value between 3.5 mA and 23.0
mA.

End

375 Fast Keys 1, 2, 2, 2, 5

This command cancels the analog loop test and returns the analog output
back into normal operating mode.

Pulse Output Loop Test

375 Fast Keys 1, 2, 2, 3

LOI Key AUX. FUNCTION

The Pulse Output Loop Test will cause the transmitter to drive the frequency
output at terminals 5 and 6 to a desired value. The actual pulse output can
then be measured by auxiliary equipment and compared to the desired pulse
output level set in the transmitter. On the LOI the test will end after five
minutes if the transmitter is not returned to normal operation manually.

Select Value

375 Fast Keys 1, 2, 2, 3, 1

Set the value of the pulse output for the test to a value between 1 pulse/day to
10,000 Hz.

End

375 Fast Keys 1, 2, 2, 3, 2

This command cancels the pulse output loop test and returns the pulse output
back into normal operating mode.

Tune Empty Pipe

375 Fast Keys 1, 2, 2, 4

LOI Key AUX. FUNCTION

Empty Pipe allows you to view the current value and configure the diagnostic
parameters. For more detail on this parameter see Appendix C: "Diagnostics".

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Empty Pipe Value

375 Fast Keys 1, 2, 2, 4, 1

LOI Key AUX. FUNCTION

Read the current Empty Pipe Value. This number is a unitless number and is
calculated based on multiple installation and process variables. For more
detail on this parameter see Appendix C: "Diagnostics".

Empty Pipe Trigge r Level

375 Fast Keys 1, 2, 2, 4, 2

LOI Key AUX. FUNCTION

Limits: 3 to 2000

Configure the threshold limit that the empty pipe value must exceed before
the diagnostic alert activates. Default from the factory is set to 100. For more
detail on this parameter see Appendix C: "Diagnostics".

Empty Pipe Counts

375 Fast Keys 1, 2, 2, 4, 3

LOI Key AUX. FUNCTION

Limits: 5 to 50

Configure the number of consecutive times that the empty pipe value must
exceed the empty pipe trigger level before the diagnostic alert activates.
Counts are taken at 1.5 second intervals. Default from the factory is set to 5.
For more detail on this parameter see Appendix C: "Diagnostics".

Electronics Temperature

375 Fast Keys 1, 2, 2, 5

LOI Key XMTR INFO

Electronics Temperature allows you to view the current value for the
electronics temperature.

Flow Limit 1

375 Fast Keys 1, 2, 2, 6

LOI Key AUX. FUNCTION

Configure the Parameters that will determine the criteria for activating a HART
alert if the measured flow rate falls within a set of configured criteria. This
functionality can be used for operating simple batching operations or
generating alerts when certain flow conditions are met. This parameter can be
configured as a discrete output if the transmitter was ordered with auxiliary
outputs enabled (option code AX), or if this functionality has been licensed in
the field.

Control 1

375 Fast Keys 1, 2, 2, 6, 1

Turns the Flow Limit 1 HART Alert ON or OFF.

ON – The transmitter will generate a HART alert when the defined
conditions are met.

5-4

OFF – The transmitter will not generate a HART alert for the Flow Limit 1.

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Mode 1

375 Fast Keys 1, 2, 2, 6, 2

Mode that determines when the Flow Limit 1 HART Alert will activate.

> High Limit – The HART Alert will activate when the measured flow rate
exceeds the High Limit 1 set point.

< Low Limit – The HART Alert will activate when the measured flow rate
falls below the Low Limit 1 set point.

In Range – The HART Alert will activate when the measured flow rate is
between the High Limit 1 and Low Limit 1 set points.

Out of Range – The HART Alert will activate when the measured flow rate
exceeds the High Limit 1 set point or falls below the Low Limit 1 set point.

High Limit 1

375 Fast Keys 1, 2, 2, 6, 3

Set the flow rate value that corresponds to the high limit set point for the Flow
Limit 1 alert.

Low Limit 1

375 Fast Keys 1, 2, 2, 6, 4

Set the flow rate value that corresponds to the low limit set point for the Flow
Limit 1 alert.

Flow Limit Hysteresis

375 Fast Keys 1, 2, 2, 6, 5

Set the hysteresis band for the flow limit to determine how quickly the
transmitter comes out of Alert status. This hysteresis value is used for both
Flow Limit 1 and Flow Limit 2.

Flow Limit 2

375 Fast Keys 1, 2, 2, 7

LOI Key AUX. FUNCTION

Configure the Parameters that will determine the criteria for activating a HART
alert if the measured flow rate falls within a set of configured criteria. This
functionality can be used for operating simple batching operations or
generating alerts when certain flow conditions are met. This parameter can be
configured as a discrete output if the transmitter was ordered with auxiliary
outputs enabled (option code AX), or if this functionality has been licensed in
the field.

Control 2

375 Fast Keys 1, 2, 2, 7, 1

Turns the Flow Limit 2 HART Alert ON or OFF.

ON – The transmitter will generate a HART alert when the defined
conditions are met.

OFF – The transmitter will not generate a HART alert for the Flow Limit 2.

5-5

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Mode 2

375 Fast Keys 1, 2, 2, 7, 2

Mode that determines when the Flow Limit 2 HART Alert will activate.

> High Limit – The HART Alert will activate when the measured flow rate
exceeds the High Limit 2 set point.

< Low Limit – The HART Alert will activate when the measured flow rate
falls below the Low Limit 2 set point.

In Range – The HART Alert will activate when the measured flow rate is
between the High Limit 2 and Low Limit 2 set points.

Out of Range – The HART Alert will activate when the measured flow rate
exceeds the High Limit 2 set point or falls below the Low Limit 2 set point.

High Limit 2

375 Fast Keys 1, 2, 2, 7, 3

Set the flow rate value that corresponds to the high limit set point for the Flow
Limit 2 alert.

Low Limit 2

375 Fast Keys 1, 2, 2, 7, 4

Set the flow rate value that corresponds to the low limit set point for the Flow
Limit 2 alert.

Flow Limit Hysteresis

375 Fast Keys 1, 2, 2, 7, 5

Set the hysteresis band for the flow limit to determine how quickly the
transmitter comes out of Alert status. This hysteresis value is used for both
Flow Limit 1 and Flow Limit 2.

Total Limit

375 Fast Keys 1, 2, 2, 8

Configure the Parameters that will determine the criteria for activating a HART
alert if the measured net total falls within a set of configured criteria. This
functionality can be used for operating simple batching operations or
generating alerts when certain flow conditions are met. This parameter can be
configured as a discrete output if the transmitter was ordered with auxiliary
outputs enabled (option code AX), or if this functionality has been licensed in
the field.

Total Control

375 Fast Keys 1, 2, 2, 8, 1

Turns the Total Limit HART Alert ON or OFF.

ON – The transmitter will generate a HART alert when the defined
conditions are met.

OFF – The transmitter will not generate a HART alert for the Total Limit.

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Total Mode

375 Fast Keys 1, 2, 2, 8, 2

Mode that determines when the Total Limit HART Alert will activate.

> High Limit – The HART Alert will activate when the measured net total
exceeds the Total High Limit set point.

< Low Limit – The HART Alert will activate when the measured net total
falls below the Total Low Limit set point.

In Range – The HART Alert will activate when the measured net total is
between the Total High Limit and Total Low Limit set points.

Out of Range – The HART Alert will activate when the measured net total
exceeds the Total High Limit set point or falls below the Total Low Limit set
point.

Total High Limit

375 Fast Keys 1, 2, 2, 8, 3

Set the net total value that corresponds to the high limit set point for the Flow
Limit 1 alert.

Total Low Limit

375 Fast Keys 1, 2, 2, 8, 4

Set the net total value that corresponds to the low limit set point for the Flow
Limit 1 alert.

Total Limit Hysteresis

375 Fast Keys 1, 2, 2, 8, 5

Set the hysteresis band for the total limit to determine how quickly the
transmitter comes out of Alert status.

Advanced Diagnostics The advanced diagnostics menu contains information on all of the additional

375 Fast Keys 1, 2, 3

diagnostics and tests that are available in the 8750WA12 transmitter if one of
the diagnostics suite packages was ordered.

Rosemount offers two advanced diagnostic suites. Functionality under this
menu will depend on which of these suites are ordered.

Advanced diagnostics suite option one (DA1 option) contains advanced
diagnostics for High Process Noise detection and Grounding and Wiring fault
detection.

Advanced diagnostics suite option two (DA2 option) contains advanced
diagnostics for the 8714i Meter Verification. This diagnostic is used to verify
the accuracy and performance of the magnetic flowmeter installation.

8714i Meter Verification

375 Fast Keys 1, 2, 3, 1

LOI Key AUX. FUNCTION

This diagnostic verifies that the sensor, transmitter, or both are working within
specifications. For more details on this diagnostic, see Appendix C:
"Diagnostics".

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July 2009

Run 8714i

375 Fast Keys 1, 2, 3, 1, 1

LOI Key AUX. FUNCTION

Run the meter verification test to check the transmitter, sensor, or entire
installation.

Full Meter Verification

375 Fast Keys 1, 2, 3, 1, 1, 1

Run the internal meter verification to check the entire installation, sensor and
transmitter at the same time.

Transmitter Only

375 Fast Keys 1, 2, 3, 1, 1, 2

Run the internal meter verification to check the transmitter only.

Sensor Only

375 Fast Keys 1, 2, 3, 1, 1, 3

Run the internal meter verification to check the sensor only.

8714i Results

375 Fast Keys 1, 2, 3, 1, 2

LOI Key XMTR INFO

Review the results of the most recently performed 8714i Meter Verification
test. Information in this section details the measurements taken and if the
meter passed the verification test. For more details on these results and what
they mean, see Appendix C: "Diagnostics".

Test Condition

375 Fast Keys 1, 2, 3, 1, 2, 1

Displays the conditions that the 8714i Meter Verification test was performed
under. For more details on this parameter see Appendix C: "Diagnostics".

Test Criteria

375 Fast Keys 1, 2, 3, 1, 2, 2

Displays the criteria that the 8714i Meter Verification test was performed
against. For more details on this parameter see Appendix C: "Diagnostics".

8714i Test Result

375 Fast Keys 1, 2, 3, 1, 2, 3

Displays the results of the 8714i Meter Verification test as pass or fail. For
more details on this parameter see Appendix C: "Diagnostics".

Simulated Velocity

375 Fast Keys 1, 2, 3, 1, 2, 4

Displays the test velocity used to verify transmitter calibration. For more
details on this parameter see Appendix C: "Diagnostics".

5-8

Actual Velocity

375 Fast Keys 1, 2, 3, 1, 2, 5

Displays the velocity measured by the transmitter during the transmitter
calibration verification test. For more details on this parameter see
Appendix C: "Diagnostics".

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Velocity Deviation

375 Fast Keys 1, 2, 3, 1, 2, 6

Displays the deviation of the transmitter calibration verification test. For more
details on this parameter see Appendix C: "Diagnostics".

Transmitter Calibration Test Result

375 Fast Keys 1, 2, 3, 1, 2, 7

Displays the result of the transmitter calibration verification test as pass or fail.
For more details on this parameter see Appendix C: "Diagnostics".

Sensor Calibration Deviation

375 Fast Keys 1, 2, 3, 1, 2, 8

Displays the deviation of the sensor calibration verification test. For more
details on this parameter see Appendix C: "Diagnostics".

Sensor Calibration Test Result

375 Fast Keys 1, 2, 3, 1, 2, 9

Displays the result of the sensor calibration verification test as pass or fail. For
more details on this parameter see Appendix C: "Diagnostics".

Coil Circuit Test Result

375 Fast Keys 1, 2, 3, 1, 2, 10

Displays the result of the coil circuit test as pass or fail. For more details on
this parameter see Appendix C: "Diagnostics".

Electrode Circuit Test Result

375 Fast Keys 1, 2, 3, 1, 2, 11

Displays the result of the electrode circuit test as pass or fail. For more details
on this parameter see Appendix C: "Diagnostics".

NOTE

To access the coil circuit test result and electrode circuit test result, you must
scroll to this option in the HART Field Communicator.

Sensor Signature

375 Fast Keys 1, 2, 3, 1, 3

LOI Key AUX. FUNCTION

The sensor signature describes the sensor characteristics to the transmitter
and is an integral part of the sensor meter verification test. From this menu
you can view the current stored signature, have the transmitter take and store
the sensor signature, or re-call the last saved good values for the sensor
signature. For more details on this parameter see Appendix C: "Diagnostics".

Signature Values

375 Fast Keys 1, 2, 3, 1, 3, 1

LOI Key XMTR INFO

Review the current values stored for the sensor signature. For more details on
this parameter see Appendix C: "Diagnostics".

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Coil Resistance

375 Fast Keys 1, 2, 3, 1, 3, 1, 1

View the base line value for the coil resistance taken during the sensor
signature process.

Coil Signature

375 Fast Keys 1, 2, 3, 1, 3, 1, 2

View the base line value for the coil signature taken during the sensor
signature process.

Electrode Resistance

375 Fast Keys 1, 2, 3, 1, 3, 1, 3

View the base line value for the electrode resistance taken during the sensor
signature process.

Re-Signature Meter

375 Fast Keys 1, 2, 3, 1, 3, 2

LOI Key AUX. FUNCTION

Have the transmitter measure and store the sensor signature values. These
values will then be used as the baseline for the meter verification test. Use
this when connecting to older Rosemount or another manufacturers sensors,
or installing the magnetic flowmeter system for the first time. For more details
on this parameter see Appendix C: "Diagnostics".

Recall Last Saved Values

375 Fast Keys 1, 2, 3, 1, 3, 3

LOI Key AUX. FUNCTION

Recalls the last saved “good” values for the sensor signature.

Set Pass/Fail Criteria

375 Fast Keys 1, 2, 3, 1, 4

LOI Key AUX. FUNCTION

Set the maximum allowable deviation percentage test criteria for the 8714i
Meter Verification test. There are three tests that this criteria can be set for:

• Full Pipe; No Flow (Best test condition) – Default is 2%

• Full Pipe; Flowing – Default is 3%

• Empty Pipe – Default is 5%

NOTE

If the 8714i Meter Verification test is done with an empty pipe, the electrode
circuit will NOT be tested.

No Flow Limit

375 Fast Keys 1, 2, 3, 1, 4, 1

1 to 10 percent

Set the pass/fail test criteria for the 8714i Meter Verification test at Full Pipe,
No Flow conditions.

5-10

Flowing Limit

375 Fast Keys 1, 2, 3, 1, 4, 2

1 to 10 percent

Set the pass/fail test criteria for the 8714i Meter Verification test at Full Pipe,
Flowing conditions.

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Empty Pipe Limit

375 Fast Keys 1, 2, 3, 1, 4, 3

1 to 10 percent

Set the pass/fail test criteria for the 8714i Meter Verification test at Empty Pipe
conditions.

Measurements

375 Fast Keys 1, 2, 3, 1, 5

LOI Key XMTR INFO

View the measured values taken during the meter verification test. Values are
shown for the Coil Resistance, Coil Signature, and Electrode Resistance.

Coil Resistance

375 Fast Keys 1, 2, 3, 1, 5, 1

View the measured value for the coil resistance taken during the 8714i meter
verification test.

Coil Signature

375 Fast Keys 1, 2, 3, 1, 5, 2

View the measured value for the coil signature taken during the 8714i meter
verification test.

Electrode Resistance

375 Fast Keys 1, 2, 3, 1, 5, 3

View the measured value for the electrode resistance taken during the 8714i
meter verification test.

Licensing

375 Fast Keys 1, 2, 3, 2

LOI Key AUX. FUNCTION

If a diagnostic suite was not ordered initially, advanced diagnostics can be
licensed in the field. Access the licensing information from this menu. For
more details on licensing, see Appendix C: "Diagnostics".

License Status

375 Fast Keys 1, 2, 3, 2, 1

Determine if a diagnostics suite has been licensed, and if so, which
diagnostics are available for activation.

License Key

375 Fast Keys 1, 2, 3, 2, 2

A license key is required to activate diagnostics in the field if the diagnostic
suite was not initially ordered. This menu allows for gathering of necessary
data to generate a license key and also the ability to enter the license key
once it has been received.

Device ID

375 Fast Keys 1, 2, 3, 2, 2, 1

This function displays the Device ID and Software Revision for the transmitter.
Both of these pieces of information are required to generate a license key.

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License Key

375 Fast Keys 1, 2, 3, 2, 2, 2

Allows you to enter a license key to activate a diagnostic suite.

Diagnostic Variable
Values

375 Fast Keys 1, 2, 4

LOI Key XMTR INFO

From this menu, all of the diagnostic variable values can be reviewed. This
information can be used to get more information about the transmitter, sensor,
and process, or to get more detail about an alert that may have activated.

Empty Pipe Value

375 Fast Keys 1, 2, 4, 1

Read the current value of the Empty Pipe parameter. This value will read zero
if Empty Pipe is turned off.

Electronics Temperature

375 Fast Keys 1, 2, 4, 2

Read the current value of the Electronics Temperature.

Line Noise

375 Fast Keys 1, 2, 4, 3

Read the current value of the amplitude of AC line noise measured on the
transmitter’s electrode inputs. This value is used in the grounding / wiring
diagnostic. If the DA1 Diagnostic Suite was not ordered or licensed, the value
displayed will be NA.

5 Hz Signal to Noise Ratio

375 Fast Keys 1, 2, 4, 4

Read the current value of the signal to noise ratio at 5 Hz. For optimum
performance, a value greater than 50 is preferred. Values less than 25 will
cause the High Process Noise alert to activate. If the DA1 Diagnostic Suite
was not ordered or licensed, the value displayed will be NA.

5-12

37 Hz Signal to Noise Ratio

375 Fast Keys 1, 2, 4, 5

Read the current value of the signal to noise ratio at 37.5 Hz. For optimum
performance, a value greater than 50 is preferred. Values less than 25 will
cause the High Process Noise alert to activate. If the DA1 Diagnostic Suite
was not ordered or licensed, the value displayed will be NA.

Signal Power

375 Fast Keys 1, 2, 4, 6

Read the current value of the velocity of the fluid through the sensor. Higher
velocities result in greater signal power. If the DA1 Diagnostic Suite was not
ordered or licensed, the value displayed will be NA.

8714i Results

375 Fast Keys 1, 2, 4, 7

Review the results of the 8714i Meter Verification tests. For more details on
these results and what they mean, see Appendix C: "Diagnostics".

Test Condition

375 Fast Keys 1, 2, 3, 7, 1

Displays the conditions that the 8714i Meter Verification test was performed
under. For more details on this parameter see Appendix C: "Diagnostics".

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Rosemount 8750WA

Test Criteria

375 Fast Keys 1, 2, 3, 7, 2

Displays the criteria that the 8714i Meter Verification test was performed
against. For more details on this parameter see Appendix C: "Diagnostics".

8714i Test Result

375 Fast Keys 1, 2, 3, 7, 3

Displays the results of the 8714i Meter Verification test as pass or fail. For
more details on this parameter see Appendix C: "Diagnostics".

Simulated Velocity

375 Fast Keys 1, 2, 3, 7, 4

Displays the test velocity used to verify transmitter calibration. For more
details on this parameter see Appendix C: "Diagnostics".

Actual Velocity

375 Fast Keys 1, 2, 3, 7, 5

Displays the velocity measured by the transmitter during the transmitter
calibration verification test. For more details on this parameter see
Appendix C: "Diagnostics".

Velocity Deviation

375 Fast Keys 1, 2, 3, 7, 6

Displays the deviation of the transmitter calibration verification test. For more
details on this parameter see Appendix C: "Diagnostics".

Transm itter Verification Test Result

375 Fast Keys 1, 2, 3, 7, 7

Displays the result of the transmitter calibration verification test as pass or fail.
For more details on this parameter see Appendix C: "Diagnostics".

Sensor Verification Deviation

375 Fast Keys 1, 2, 3, 7, 8

Displays the deviation of the sensor calibration verification test. For more
details on this parameter see Appendix C: "Diagnostics".

Sensor Verification Result

375 Fast Keys 1, 2, 3, 7, 9

Displays the result of the sensor calibration verification test as pass or fail. For
more details on this parameter see Appendix C: "Diagnostics".

Coil Circuit Test Result

375 Fast Keys 1, 2, 3, 7, 10

Displays the result of the coil circuit test as pass or fail. For more details on
this parameter see Appendix C: "Diagnostics".

Electrode Circuit Test Result

375 Fast Keys 1, 2, 3, 7, 11

Displays the result of the electrode circuit test as pass or fail. For more details
on this parameter see Appendix C: "Diagnostics".

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July 2009

NOTE

To access the coil circuit test result and electrode circuit test result, you must
scroll to this option in the HART Field Communicator.

Trims Trims are used to calibrate the analog loop, calibrate the transmitter, and

375 Fast Keys 1, 2, 5

LOI Key AUX. FUNCTION

re-zero the transmitter. Proceed with caution whenever performing a trim
function.

D/A Trim

375 Fast Keys 1, 2, 5, 1

LOI Key AUX. FUNCTION

The D/A Trim is used to calibrate the 4-20 mA analog loop output from the
transmitter. For maximum accuracy, the analog output should be trimmed for
the loop. Use the following steps to complete the Output Trim function.

1. Set the loop to manual, if necessary.

2. Connect a precision ammeter in the 4–20 mA loop.

3. Initiate the D/A Trim function with the LOI or Handheld

Communicator.

4. Enter the 4 mA meter value when prompted to do so.

5. Enter the 20 mA meter value when prompted to do so.

6. Return the loop to automatic control, if necessary.

The 4–20 mA trim is now complete. You may repeat the 4–20 mA trim to
check the results, or use the analog output test.

Scaled D/A Trim

375 Fast Keys 1, 2, 5, 2

LOI Key AUX. FUNCTION

Scaled D/A trim calibration of the flowmeter analog output using a different
scale than the standard 4-20 mA output scale. Non-scaled D/A trimming
(described above), is typically performed using an ammeter where calibration
values are entered in units of milliamperes. Scaled D/A trimming allows
trimming of the flowmeter using a scale that may be more convenient based
upon the method of measurement.

For example, it may be more convenient to make current measurements by
direct voltage readings across the loop resistor. If the loop resistor is 500
ohms, and calibration of the meter using voltage measurements made across
this resistor is desired, rescale the trim points from 4-20mA to 4-20mA x 500
ohm or 2-10 VDC. Once the scaled trim points have been entered as 2 and
10, calibration of the flowmeter can be done by entering voltage
measurements directly from the voltmeter.

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Digital Trim

375 Fast Keys 1, 2, 5, 3

LOI Key AUX. FUNCTION

Digital trim is the function by which the factory calibrates the transmitter. This
procedure is rarely needed by users. It is only necessary if it is suspected the
Rosemount 8750WA12 is no longer accurate. A Rosemount 8714 Calibration
Standard is required to complete a digital trim. Attempting a digital trim without
a Rosemount 8714 Calibration Standard may result in an inaccurate
transmitter or an error message. The Digital Trim must be performed only with
the coil drive mode set to 5 Hz and with a nominal sensor calibration number
stored in the memory.

NOTE

Attempting a digital trim without a Rosemount 8714 Calibration Standard may
result in an inaccurate transmitter, or a “DIGITAL TRIM FAILURE” message
may appear. If this message occurs, no values were changed in the
transmitter. Simply power down the Rosemount 8750WA12 to clear the
message.

To simulate a nominal sensor with the Rosemount 8714D Calibration
Standard, you must change the following four parameters in the Rosemount
8750WA12:

1. Calibration Number—1000015010000000

2. Units—ft/s

3. PV URV—20 mA = 30.00 ft/s

4. PV LRV—4 mA = 0 ft/s

5. Coil Drive Frequency—5 Hz

The instructions for changing the Sensor Calibration Number, Units, PV URV,
and PV LRV are located in “Basic Setup” on page 3-8. Instructions for
changing the Coil Drive Frequency can be found on page 5-16 in this section.

Set the loop to manual, if necessary, before you begin. Complete the following
steps:

1. Power down the transmitter.

2. Connect the transmitter to a Rosemount 8714 Calibration Standard.

3. Power up the transmitter with the Rosemount 8714 Calibration

Standard connected and read the flow rate. The electronics need
about a 5-minute warm-up time to stabilize.

4. Set the 8714 Calibration Standard to the 30 ft/s (9.1 m/s) setting.

5. The flow rate reading after warm-up should be between 29.97 (9.1

m/s) and 30.03 ft/s (9.2 m/s).

6. If the reading is within the range, return the transmitter to the original

configuration parameters.

7. If the reading is not within this range, initiate a digital trim with the LOI

or Handheld Communicator. The digital trim takes about 90 seconds
to complete. No transmitter adjustments are required.

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Auto Zero

375 Fast Keys 1, 2, 5, 4

LOI Key AUX. FUNCTION

The auto zero function initializes the transmitter for use with the 37 Hz coil
drive mode only. Run this function only with the transmitter and sensor
installed in the process. The sensor must be filled with process fluid at zero
flow. Before running the auto zero function, be sure the coil drive mode is set
to 37 Hz (Auto Zero will not run with the coil drive frequency set at 5 Hz).

Set the loop to manual if necessary and begin the auto zero procedure. The
transmitter completes the procedure automatically in about 90 seconds. A
symbol appears in the lower right-hand corner of the display to indicate that
the procedure is running.

Status Status displays a summary of the health of the transmitter. If there are any

375 Fast Keys 1, 2, 6

LOI Key XMTR INFO

alerts or error messages that have activated, they will be listed here.

ADVANCED CONFIGURATION

In addition to the basic configuration options and the diagnostic information
and controls, the 8750WA12 has many advanced functions that can also be
configured as required by the application.

DETAILED SETUP The detailed setup function provides access to other parameters within the

375 Fast Keys 1, 4

transmitter that can be configured such as coil drive frequency, output
parameters, local display configuration, and other general information about
the device.

Additional Parameters The additional parameters menu provides a means to configure optional

375 Fast Keys 1, 4, 1

parameters within the 8750WA12 transmitter.

Coil Drive Frequency

375 Fast Keys 1, 4, 1, 1

LOI Key AUX. FUNCTION

Coil drive frequency allows pulse-rate selection of the sensor coils.

5 Hz

The standard coil drive frequency is 5 Hz, which is sufficient for nearly all
applications.

37 Hz

If the process fluid causes a noisy or unstable output, increase the coil drive
frequency to 37 Hz. If the 37 Hz mode is selected, perform the auto zero
function.

5-16

Density Value

375 Fast Keys 1, 4, 1, 2

LOI Key AUX. FUNCTION

The density value is used to convert from a volumetric flow rate to a mass flow
rate using the following equation:

= Qv  

Q

m

Where:

Q

is the mass flow rate

m

Q

is the volumetric flow rate, and

v

 is the fluid density

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Rosemount 8750WA

PV Upper Sensor Limit (USL)

375 Fast Keys 1, 4, 1, 3

The PV USL is the maximum value that the 20 mA value can be set to. This is
the upper measuring limit of the transmitter and sensor.

PV Lower Sensor Limit (LSL)

375 Fast Keys 1, 4, 1, 4

The PV LSL is the minimum value that the 4 mA value can be set to. This is
the lower measuring limit of the transmitter and sensor.

PV Minimum Span

375 Fast Keys 1, 4, 1, 5

The PV minimum span is the minimum flow range that must separate the 4
mA and 20 mA set point values.

Configure Outputs The configure outputs menu contains functionality to configure the more

375 Fast Keys 1, 4, 2

advanced features that control the analog, pulse, auxiliary, and totalizer
outputs of the transmitter.

Analog Output

375 Fast Keys 1, 4, 2, 1

Under this function the advanced features of the analog output can be
configured.

PV Upper Range Value (URV)

375 Fast Keys 1, 4, 2, 1, 1

LOI Key ANALOG OUTPUT RANGE

The upper range value (URV), or analog output range, is preset to 30 ft/s at
the factory. The units that appear will be the same as those selected under the
units parameter.

The URV (20 mA point) can be set for both forward or reverse flow rate. Flow
in the forward direction is represented by positive values and flow in the
reverse direction is represented by negative values. The URV can be any
value from –39.3 ft/s to +39.3 ft/s (-12 m/s to +12 m/s), as long as it is at least
1 ft/s (0.3 m/s) from the lower range value (4 mA point). The URV can be set
to a value less than the lower range value. This will cause the transmitter
analog output to operate in reverse, with the current increasing for lower (or
more negative) flow rates.

NOTE

Line size, special units, and density (for mass units only) must be selected
prior to configuration of URV and LRV.

PV Lower Range Value (LRV)

375 Fast Keys 1, 4, 2, 1, 2

LOI Key AUX. FUNCTION

The lower range value (LRV) is preset to 0 ft/s at the factory. The units that
appear will be the same as those selected under the units parameter.

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July 2009

Reset the lower range value (LRV), or 4 mA point, to change the size of the
range (or span) between the URV and LRV. Under normal circumstances, the
LRV should be set to a value near the minimum expected flow rate to
maximize resolution. The LRV must be between –39.3 ft/s to +39.3 ft/s (-12
m/s to +12 m/s).

NOTE

The LRV can be set to a value greater than the URV, which will cause the
analog output to operate in reverse. In this mode, the analog output will
increase with lower (more negative) flow rates.

Example

If the URV is greater than the LRV, the analog output will saturate at 3.9 mA
when the flow rate falls below the selected 4 mA point. The minimum
allowable span between the URV and LRV is 1 ft/s. Do not set the LRV within
1 ft/s (0.3 m/s) of the 20 mA point. For example, if the URV is set to 15.67 ft/s
(4.8 m/s) and if the desired URV is greater than the LRV, then the highest
allowable setting would be 14.67 ft/s (4.5 m/s). If the desired URV is less than
the LRV, then the lowest allowable LRV would be 16.67 ft/s (5.1 m/s).

NOTE

Line size, special units, and density (for mass units only) must be selected
prior to configuration of URV and LRV.

PV Analog Output

375 Fast Keys 1, 4, 2, 1, 3

The PV analog output displays the current analog output value (mA) of the
transmitter corresponding to the current measured flow rate.

Analog Output Alarm Type

375 Fast Keys 1, 4, 2, 1, 4

The analog output alarm type displays the alarm mode the 8750WA12 is
currently set for. This value is set by a switch on the electronics board. There
are two available options for this setting:

• High

•Low

Loop Test

375 Fast Keys 1, 4, 2, 1, 5

LOI Key AUX. FUNCTION

The loop test drives the transmitter output to a desired electrical current on
terminals 7 and 8. This capability allows for verification of the entire current
loop prior to start-up. On the LOI the test will end after five minutes if the
transmitter is not returned to normal operation manually.

5-18

D/A Trim

375 Fast Keys 1, 4, 2, 1, 6

LOI Key AUX. FUNCTION

The D/A Trim is used to calibrate the 4-20 mA analog loop output from the
transmitter. For maximum accuracy, the analog output should be trimmed for
the loop. Use the following steps to complete the Output Trim function.

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Rosemount 8750WA

1. Set the loop to manual, if necessary.

2. Connect a precision ammeter in the 4–20 mA loop.

3. Initiate the Output Trim function with the LOI, Handheld

Communicator, or AMS.

4. Enter the 4 mA meter value when prompted to do so.

5. Enter the 20 mA meter value when prompted to do so.

6. Return the loop to automatic control, if necessary.

The 4–20 mA trim is now completed. Repeat the 4–20 mA trim to check the
results, or use the analog output test.

Scaled D/A Trim

375 Fast Keys 1, 4, 2, 1, 7

LOI Key AUX. FUNCTION

Scaled D/A trim enables calibration of the flowmeter analog output using a
different scale than the standard 4-20 mA output scale. Non-scaled D/A
trimming (described above), is typically performed using an ammeter where
calibration values are entered in units of milliamperes. Scaled D/A trimming
allows you to trim the flowmeter using a scale that may be more convenient
based upon the method of measurement.

For example, it may be more convenient to make current measurements by
direct voltage readings across the loop resistor. If the loop resistor is 500
ohms, and calibration of the meter using voltage measurements made across
this resistor is desired, rescale the trim points from 4-20mA to 4-20mA x 500
ohm or 2-10 VDC. Once the scaled trim points have been entered as 2 and
10, calibration of the flowmeter can be done by entering voltage
measurements directly from the voltmeter.

Alarm Level

375 Fast Keys 1, 4, 2, 1, 8

The alarm level allows configuration of the transmitter to preset values if an
alarm occurs. There are two options:

• Rosemount Alarm and Saturation Values

• NAMUR-Compliant Alarm and Saturation Levels

Table 5-1. Rosemount (Standard) Alarm and Saturation Values

Level 4-20 mA Saturation 4-20 mA Alarm

Low 3.9 mA 3.75 mA
High 20.8 mA 22.6 mA

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

Level 4-20 mA Saturation 4-20 mA Alarm

Low 3.8 mA 3.5 mA
High 20.5 mA 22.6 mA

Pulse Output

375 Fast Keys 1, 4, 2, 2

LOI Key AUX. FUNCTION

Under this function the pulse output of the 8750WA12 can be configured.

5-19

Rosemount 8750WA

10 000gal

1min

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

60sec

1pulse

0.01gal



16666.7 Hz=

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Pulse Scaling

375 Fast Keys 1, 4, 2, 2, 1

LOI Key PULSE OUTPUT SCALING

The transmitter may be commanded to supply a specified frequency between
1 pulse/ day at 39.37 ft/sec (12 m/s) to 10,000 Hz at 1 ft/sec (0.3 m/s).

NOTE

Line size, special units, and density (for mass units only) must be selected
prior to configuration of the Pulse Scaling factor.

The pulse output scaling equates one transistor switch closure pulse to a
selectable number of volume units. The volume unit used for scaling pulse
output is taken from the numerator of the configured flow units. For example,
if gal/min had been chosen when selecting the flow rate unit, the volume unit
displayed would be gallons.

NOTE

The pulse output scaling is designed to operate between 0 and 10,000 Hz.
The minimum conversion factor value is found by dividing the minimum span
(in units of volume per second) by 10,000 Hz.

When selecting pulse output scaling, remember that the maximum pulse rate
is 10,000 Hz. With the 110 percent overrange capability, the absolute limit is
11,000 Hz. For example, if the Rosemount 8750WA12 to pulse every time

0.01 gallons pass through the sensor, and the flow rate is 10,000 gal/min, the
10,000 Hz full-scale limit will be exceeded:

The best choice for this parameter depends upon the required resolution, the
number of digits in the totalizer, the extent of range required, and the
maximum counter external frequency.

NOTE

For totalizing on the LOI, ten digits are available.

Pulse Width

375 Fast Keys 1, 4, 2, 2, 2

LOI Key AUX. FUNCTION

The factory default pulse width is 0.5 ms.

The width, or duration, of the pulse width can be adjusted to match the
requirements of different counters or controllers (see Figure 5-1 on
page 5-21). These are typically lower frequency applications (< 1000 Hz). The
transmitter will accept values from 0.1 ms to 650 ms.

For frequencies higher than 1000 Hz, it is recommended to set the pulse
mode to 50% duty cycle.

5-20

If the pulse width is set too wide (more than 1/2 the period of the pulse) the
transmitter will automatically default to a pulse width of 50% duty cycle.

Reference Manual

Pulse
Width

Period

OPEN

CLOSED

1 Cycle

200 mS

-------------------- 5 H z=

1 Cycle

1.0 mS

-------------------- 1000 Hz=

Pulse Scaling

Flow Rate (gpm)

(60 s/min)(Frequency)

-----------------------------------------------------------=

Pulse Scaling

10,000 gpm

(60 s/min)(10,000 Hz)

----------------------------------------------------------=

Pulse Scaling 0.0167 gal/pulse=

1 Pulse 0.0167 gallon=

00809-0100-4750, Rev AA
July 2009

Figure 5-1. Pulse Output

Rosemount 8750WA

Example

If pulse width is set to 100 ms, the maximum output is 5 Hz; for a pulse width
of 0.5 ms, the maximum output would be 1000 Hz (at the maximum frequency
output there is a 50 percent duty cycle).

PULSE WIDTH MINIMUM PERIOD (50% duty cycle) MAXIMUM FREQUENCY

100 ms 200 ms

0.5 ms 1.0 ms

To achieve the greatest maximum frequency output, set the pulse width to the
lowest value that is consistent with the requirements of the pulse output
power source, pulse driven external totalizer, or other peripheral equipment.

Example

The maximum flow rate is 10,000 gpm. Set the pulse output scaling such that
the transmitter outputs 10,000 Hz at 10,000 gpm.

NOTE

Changes to pulse width are only required when there is a minimum pulse
width required for external counters, relays, etc. If frequency generated by the
transmitter requires a smaller pulse width than the pulse width selected, the
transmitter will automatically go to 50% duty cycle.

5-21

Rosemount 8750WA

Frequency

Flow Rate (gpm)

(60 s/min)(Pulse Scaling gal/pulse)

--------------------------------------------------------------- -------------------------------=

Frequency

350 gpm

(60 s/min)(1 gal/pulse)

-----------------------------------------------------------=

Frequency 5.833 Hz=

Pulse Scaling

Flow Rate (gpm)

(60 s/min)(Frequency)

-----------------------------------------------------------=

3000 gpm

(60 s/min)(10,000Hz)

--------------------------------------------------------=

0.005 gal/pulse=

1 Pulse 0.005 gallon=

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Example

The external counter is ranged for 350 gpm and pulse is set for one gallon.
Assuming the pulse width is 0.5 ms, the maximum frequency output is 5.833
Hz.

Example

The upper range value (20 mA) is 3000 gpm. To obtain the highest resolution
of the pulse output, 10,000 Hz is scaled to the full scale analog reading.

Pulse Output Loop Test

375 Fast Keys 1, 4, 2, 2, 3

LOI Key AUX. FUNCTION

The Pulse Output Loop Test allows the transmitter to drive the frequency
output at terminals 3 and 4 to a desired value. This capability allows checking
of the auxiliary equipment prior to start-up. On the LOI the test will end after
five minutes if the transmitter is not returned to normal operation manually.

Digital Input / Digital Output

375 Fast Keys 1, 4, 2, 3

LOI Key AUX. FUNCTION

This menu is used to configure the optional digital input and digital output
parameters of the 8750WA12 transmitter. Note that this configuration option is
only active if the auxiliary output suite (option code AX) was ordered.

DI/DO 1

375 Fast Keys 1, 4, 2, 3, 1

Configure the auxiliary output channel 1. This controls the auxiliary channel 1
of the transmitter on terminals 9(+) and 10(-). Note that the transmitter must
have been ordered with the auxiliary output option (Model Code AX) or have
been licensed in the field in order to have access to this functionality.

Configure I/O 1

375 Fast Keys 1, 4, 2, 3, 1, 1

Configure channel 1 for either an Input or an Output.

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Input – Channel 1 will be configured as a discrete input. Options are:

PZR – Positive Zero Return. When conditions are met to activate the input,
the transmitter will force the output to zero flow.

Net Total Reset – When conditions are met to activate the input, the
transmitter will reset the Net Total value to zero.

Output – Channel 1 will be configured as a discrete output. Options are:

Reverse Flow – The output will activate when the transmitter detects a
reverse flow condition.

Zero Flow – The output will activate when a no flow condition is detected.

Transmitter Fault – The output will activate when a transmitter fault
condition is detected.

Empty Pipe – The output will activate when the transmitter detects an
empty pipe condition.

Flow Limit 1 – The output will activate when the transmitter measures a
flow rate that meets the conditions established for the Flow Limit 1 Alert.

Flow Limit 2 – The output will activate when the transmitter measures a
flow rate that meets the conditions established for the Flow Limit 2 Alert.

Diagnostic Status Alert – The output will activate when the transmitter
detects a condition that meets the configured criteria of the Diagnostic
Status Alert.

Total Limit – The output will activate when the transmitter net total value
meets the conditions established for the Total Limit Alert.

DIO 1 Control

375 Fast Keys 1, 4, 2, 3, 1, 2

Displays the configuration for Channel 1 as either a discrete Input or Output.

Digital Input 1

375 Fast Keys 1, 4, 2, 3, 1, 3

Displays what discrete input Channel 1 will be set to when the Control for
Channel 1 is set to Input.

Digital Output 1

375 Fast Keys 1, 4, 2, 3, 1, 4

Displays what discrete output Channel 1 will be set to when the Control for
Channel 1 is set to Output.

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July 2009

DO 2

375 Fast Keys 1, 4, 2, 3, 2

Configure the digital output value here. This controls the digital output from
the transmitter on terminals 16(+) and 20(-). Options are:

• Reverse Flow – The output will activate when the transmitter detects a
reverse flow condition.

• Zero Flow – The output will activate when a no flow condition is
detected.

• Transmitter Fault – The output will activate when a transmitter fault
condition is detected.

• Empty Pipe – The output will activate when the transmitter detects an
empty pipe condition.

• Flow Limit 1 – The output will activate when the transmitter measures a
flow rate that meets the conditions established for the Flow Limit 1
Alert.

• Flow Limit 2 – The output will activate when the transmitter measures a
flow rate that meets the conditions established for the Flow Limit 2
Alert.

• Diagnostic Status Alert – The output will activate when the transmitter
detects a condition that meets the configured criteria of the Diagnostic
Status Alert.

• Total Limit – The output will activate when the transmitter net total value
meets the conditions established for the Total Limit Alert.

Flow Limit 1

375 Fast Keys 1, 4, 2, 3, 3

LOI Key AUX. FUNCTION

Configure the Parameters that will determine the criteria for activating a HART
alert if the measured flow rate falls within a set of configured criteria. This
functionality can be used for operating simple batching operations or
generating alerts when certain flow conditions are met. This parameter can be
configured as a discrete output if the transmitter was ordered with auxiliary
outputs enabled (option code AX), or if this functionality has been licensed in
the field.

Control 1

375 Fast Keys 1, 4, 2, 3, 3, 1

Turns the Flow Limit 1 HART Alert ON or OFF.

ON – The transmitter will generate a HART alert when the defined
conditions are met.

OFF – The transmitter will not generate a HART alert for the Flow Limit 1.

Mode 1

375 Fast Keys 1, 4, 2, 3, 3, 2

Mode that determines when the Flow Limit 1 HART Alert will activate.

> High Limit – The HART Alert will activate when the measured flow rate
exceeds the High Limit 1 set point.

< Low Limit – The HART Alert will activate when the measured flow rate
falls below the Low Limit 1 set point.

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Rosemount 8750WA

In Range – The HART Alert will activate when the measured flow rate is
between the High Limit 1 and Low Limit 1 set points.

Out of Range – The HART Alert will activate when the measured flow rate
exceeds the High Limit 1 set point or falls below the Low Limit 1 set point.

High Limit 1

375 Fast Keys 1, 4, 2, 3, 3, 3

Set the flow rate value that corresponds to the high limit set point for the Flow
Limit 1 alert.

Low Limit 1

375 Fast Keys 1, 4, 2, 3, 3, 4

Set the flow rate value that corresponds to the low limit set point for the Flow
Limit 1 alert.

Flow Limit Hysteresis

375 Fast Keys 1, 4, 2, 3, 3, 5

Set the hysteresis band for the flow limit to determine how quickly the
transmitter comes out of Alert status. This hysteresis value is used for both
Flow Limit 1 and Flow Limit 2.

Flow Limit 2

375 Fast Keys 1, 4, 2, 3, 4

LOI Key AUX. FUNCTION

Configure the Parameters that will determine the criteria for activating a HART
alert if the measured flow rate falls within a set of configured criteria. This
functionality can be used for operating simple batching operations or
generating alerts when certain flow conditions are met. This parameter can be
configured as a discrete output if the transmitter was ordered with auxiliary
outputs enabled (option code AX), or if this functionality has been licensed in
the field.

Control 2

375 Fast Keys 1, 4, 2, 3, 4, 1

Turns the Flow Limit 2 HART Alert ON or OFF.

ON – The transmitter will generate a HART alert when the defined
conditions are met.

OFF – The transmitter will not generate a HART alert for the Flow Limit 2.

Mode 2

375 Fast Keys 1, 4, 2, 3, 4, 2

Mode that determines when the Flow Limit 2 HART Alert will activate.

> High Limit – The HART Alert will activate when the measured flow rate
exceeds the High Limit 2 set point.

< Low Limit – The HART Alert will activate when the measured flow rate
falls below the Low Limit 2 set point.

In Range – The HART Alert will activate when the measured flow rate is
between the High Limit 2 and Low Limit 2 set points.

Out of Range – The HART Alert will activate when the measured flow rate
exceeds the High Limit 2 set point or falls below the Low Limit 2 set point.

5-25

Rosemount 8750WA

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July 2009

High Limit 2

375 Fast Keys 1, 4, 2, 3, 4, 3

Set the flow rate value that corresponds to the high limit set point for the Flow
Limit 2 alert.

Low Limit 2

375 Fast Keys 1, 4, 2, 3, 4, 4

Set the flow rate value that corresponds to the low limit set point for the Flow
Limit 2 alert.

Flow Limit Hysteresis

375 Fast Keys 1, 4, 2, 3, 4, 5

Set the hysteresis band for the flow limit to determine how quickly the
transmitter comes out of Alert status. This hysteresis value is used for both
Flow Limit 1 and Flow Limit 2.

Total Limit

375 Fast Keys 1, 4, 2, 3, 5

LOI Key AUX. FUNCTION

Configure the Parameters that will determine the criteria for activating a HART
alert if the measured net total falls within a set of configured criteria. This
functionality can be used for operating simple batching operations or
generating alerts when certain conditions are met. This parameter can be
configured as a discrete output if the transmitter was ordered with auxiliary
outputs enabled (option code AX), or if this functionality has been licensed in
the field.

Total Control

375 Fast Keys 1, 4, 2, 3, 5, 1

Turns the Total Limit HART Alert ON or OFF.

ON – The transmitter will generate a HART alert when the defined
conditions are met.

OFF – The transmitter will not generate a HART alert for the Total Limit.

Total Mode

375 Fast Keys 1, 4, 2, 3, 5, 2

Mode that determines when the Total Limit HART Alert will activate.

> High Limit – The HART Alert will activate when the measured net total
exceeds the Total High Limit set point.

< Low Limit – The HART Alert will activate when the measured net total
falls below the Total Low Limit set point.

In Range – The HART Alert will activate when the measured net total is
between the Total High Limit and Total Low Limit set points.

5-26

Out of Range – The HART Alert will activate when the measured net total
exceeds the Total High Limit set point or falls below the Total Low Limit set
point.

Total High Limit

375 Fast Keys 1, 4, 2, 3, 5, 3

Set the net total value that corresponds to the high limit set point for the Limit
alert.

Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Total Low Limit

375 Fast Keys 1, 4, 2, 3, 5, 4

Set the net total value that corresponds to the low limit set point for the Limit
alert.

Total Limit Hysteresis

375 Fast Keys 1, 4, 2, 3, 5, 5

Set the hysteresis band for the total limit to determine how quickly the
transmitter comes out of Alert status.

Diagnostic Status Alert

375 Fast Keys 1, 4, 2, 3, 6

LOI Key AUX. FUNCTION

Turn ON / OFF the diagnostics that will cause this Alert to activate.

ON – The Diagnostic Status Alert will activate when a transmitter detects a
diagnostic designated as ON.

OFF – The Diagnostic Status Alert will not activate when diagnostics
designated as OFF are detected.

Reverse Flow

375 Fast Keys 1, 4, 2, 4

LOI Key AUX. FUNCTION

Enable or disable the transmitter’s ability to read reverse flow.

Reverse Flow allows the transmitter to read negative flow. This may occur
when flow in the pipe is going the negative direction, or when either electrode
wires or coil wires are reversed. This also enables the totalizer to count in the
reverse direction.

Totalizer Setup

375 Fast Keys 1, 4, 2, 5

LOI Key AUX. FUNCTION

The totalizer setup menu allows for the viewing and configuration of the
totalizer parameters.

Totalizer Units

375 Fast Keys 1, 4, 2, 5, 1

LOI Key AUX. FUNCTION

Totalizer units allow for the configuration of the units that the totalized value
will be displayed as. These units are independent of the flow units.

Measured Gross Total

375 Fast Keys 1, 4, 2, 5, 2

LOI Key TOTALIZE

Measured gross total provides the output reading of the totalizer. This value is
the amount of process fluid that has passed through the flowmeter since the
totalizer was last reset.

To reset the gross total value, change the line size. See “Line Size” on
page 4-10 for details on how to change the line size.

5-27

Rosemount 8750WA

Reference Manual

00809-0100-4750, Rev AA

July 2009

Measured Net Total

375 Fast Keys 1, 4, 2, 5, 3

LOI Key TOTALIZE

Measured net total provides the output reading of the totalizer. This value is
the amount of process fluid that has passed through the flowmeter since the
totalizer was last reset. When reverse flow is enabled, the net total represents
the difference between the total flow in the forward direction less the total flow
in the reverse direction.

Measured Reverse Total

375 Fast Keys 1, 4, 2, 5, 4

LOI Key TOTALIZE

Measured reverse total provides the output reading of the totalizer. This value
is the amount of process fluid that has passed through the flowmeter in the
reverse direction since the totalizer was last reset. This value is only totalized
when reverse flow is enabled.

Start Totalizer

375 Fast Keys 1, 4, 2, 5, 5

LOI Key START/STOP

Start totalizer starts the totalizer counting from its current value.

Stop Totalizer

375 Fast Keys 1, 4, 2, 5, 6

LOI Key START/STOP

Stop totalizer interrupts the totalizer count until it is restarted again. This
feature is often used during pipe cleaning or other maintenance operations.

Reset Totalizer

375 Fast Keys 1, 4, 2, 5, 7

LOI Key READ/RESET

Reset totalizer resets the net totalizer value to zero. The totalizer must be
stopped before resetting.

NOTE

The totalizer value is saved in the Non-Volatile memory of the electronics
every three seconds. Should power to the transmitter be interrupted, the
totalizer value will start at the last saved value when power is re-applied.

Alarm Level

375 Fast Keys 1, 4, 2, 6

The alarm level allows configuration of the transmitter to preset values if an
alarm occurs. There are two options:

• Rosemount Alarm and Saturation Values

• NAMUR-Complaint Alarm and Saturation Levels

5-28

Table 5-3. Rosemount (Standard) Alarm and Saturation Values

Level 4-20 mA Saturation 4-20 mA Alarm

Low 3.9 mA 3.75 mA
High 20.8 mA 22.6 mA

Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Table 5-4. NAMUR-Compliant Alarm and Saturation Values

Level 4-20 mA Saturation 4-20 mA Alarm

Low 3.8 mA 3.5 mA
High 20.5 mA 22.6 mA

HART Output

375 Fast Keys 1, 4, 2, 7

Multidrop configuration refers to the connection of several flowmeters to a
single communications transmission line. Communication occurs digitally
between a HART-based communicator or control system and the flowmeters.
Multidrop mode automatically deactivates the analog output of the
flowmeters. Using the HART communications protocol, up to 15 transmitters
can be connected on a single twisted pair of wires or over leased phone lines.
The use of a multidrop installation requires consideration of the update rate
necessary from each transmitter, the combination of transmitter models, and
the length of the transmission line. Multidrop installations are not
recommended where intrinsic safety is a requirement. Communication with
the transmitters can be accomplished with commercially available Bell 202
modems and a host implementing the HART protocol. Each transmitter is
identified by a unique address (1-15) and responds to the commands defined
in the HART protocol.

Variable Mapping

375 Fast Keys 1, 4, 2, 7, 1

Variable mapping allows configuration of the variables that are mapped to the
tertiary and quaternary variables. The primary and secondary variables are
fixed and cannot be configured.

• PV is configured for flow

• SV is configured for pulse

Tertiary Variable

375 Fast Keys 1, 4, 2, 7, 1, 1

The tertiary variable maps the third variable of the transmitter. This variable is
a HART only variable and can be read off of the HART signal with a HART
enabled input card, or can be burst for use with a HART Tri-Loop to convert
the HART signal to an analog output. Options available for mapping to this
variable are:

•Forward Gross

• Forward Net

• Reverse Gross

• Electronics Temp

5-29

Rosemount 8750WA

Reference Manual

00809-0100-4750, Rev AA

July 2009

Quaternary Variable

375 Fast Keys 1, 4, 2, 7, 1, 2

The quaternary variable maps the fourth variable of the transmitter. This
variable is a HART only variable and can be read off of the HART signal with a
HART enabled input card, or can be burst for use with a HART Tri-Loop to
convert the HART signal to an analog output. Options available for mapping
to this variable are:

•Forward Gross

• Forward Net

• Reverse Gross

• Electronics Temp

Polling Address

375 Fast Keys 1, 4, 2, 7, 2

Poll Address sets the address for a multi- dropped meter. The poll address is
used to identify each meter on the multi-drop line. Follow the on-screen
instructions to set the address at a number from 1 to 15. To set or change the
flowmeter address, establish communication with the selected Rosemount
8750WA12 in the loop.

NOTE

The Rosemount 8750WA12 is set to poll address zero at the factory, allowing
it to operate in the standard point-to-point manner with a 4–20 mA output
signal. To activate multidrop communication, the transmitter poll address must
be changed to a number between 1 and 15. This change deactivates the 4–20
mA analog output, setting it to 4 mA, and disables the failure mode alarm
signal.

Number of Request Preambles

375 Fast Keys 1, 4, 2, 7, 3

This is the number of preambles required by the 8750WA12 for HART
communications.

Number of Response Preambles

375 Fast Keys 1, 4, 2, 7, 4

This is the number of preambles sent by the 8750WA12 in response to any
host request.

Burst Mode

375 Fast Keys 1, 4, 2, 7, 5

Burst Mode Configuration

The Rosemount 8750WA12 includes a burst mode function that broadcasts
the primary variable or all dynamic variables approximately three to four times
a second. The burst mode is a specialized function used in very specific
applications. The burst mode function enables selection of the variables to
broadcast while in the burst mode and to select the burst mode option.

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July 2009

Rosemount 8750WA

The Burst Mode variable enables setting of the Burst Mode to the needs of
the application. Options for the Burst Mode setting include:

• Off–Turns off the Burst Mode so that no data are broadcast on the loop.

• On–Turns Burst Mode on so that the data selected under Burst Option
are broadcast over the loop.

Additional command options may appear that are reserved and do not apply
to the Rosemount 8750WA12.

Burst Option

375 Fast Keys 1, 4, 2, 7, 6

Burst option enables selection of the variables to broadcast over the
transmitter burst. Choose one of the following options:

• PV–Selects the process variable for broadcast over the transmitter
burst.

• Percent Range/Current–Selects the process variable as percent of
range and analog output variables for broadcast over the transmitter
burst.

• Process vars/crnt–Selects the process variables and analog output
variables for broadcast over the transmitter burst.

• Dynamic Vars–Burst all dynamic variables in the transmitter.

LOI Configuration The LOI (local operator interface) configuration contains functionality to

375 Fast Keys 1, 4, 3

configure the LOI outputs of the transmitter.

Flowrate Display

375 Fast Keys 1, 4, 3, 2

This allows configuration of the items that the LOI will display when at the flow
rate screen. There are five options available:

• Flow rate and % Span

• % Span and Net Total

• Flowrate and Net Total

• % Span and Gross Total

• Flowrate and Gross Total

Totalizer Display

375 Fast Keys 1, 4, 3, 3

This allows configuration of the items that the LOI will display when in the
totalizer screen. There are two options available:

• Forward Total and Reverse Total

• Net Total and Gross Total

Signal Processing The 8750WA12 contains several advanced functions that can be used to

375 Fast Keys 1, 4, 4

LOI Key AUX. FUNCTION

stabilize erratic outputs caused by process noise. The signal processing
menu contains this functionality.

5-31

Rosemount 8750WA

Reference Manual

00809-0100-4750, Rev AA

July 2009

Operating Mode

375 Fast Keys 1, 4, 4, 1

The Operating Mode should be used only when the signal is noisy and gives
an unstable output. Filter mode automatically uses 37 Hz coil drive mode and
activates signal processing at the factory set default values. When using filter
mode, perform an auto zero with no flow and a full sensor. Either of the
parameters, coil drive mode or signal processing, may still be changed
individually. Turning Signal Processing off or changing the coil drive frequency
to 5 Hz will automatically change the Operating Mode from filter mode to
normal mode.

Manually Configure Digital Signal Processing (DSP)

375 Fast Keys 1, 4, 4, 2

The 8750WA12 transmitter includes digital signal processing capabilities that
can be used to condition the output from the transmitter by enabling noise
rejection. See Appendix D: "Digital Signal Processing" for a more information
on the DSP functionality.

Enable/Disable DSP

375 Fast Keys 1, 4, 4, 2, 1

When ON is selected, the Rosemount 8750WA12 output is derived using a
running average of the individual flow inputs. Signal processing is a software
algorithm that examines the quality of the electrode signal against
user-specified tolerances. This average is updated at the rate of 10 samples
per second with a coil drive frequency of 5 Hz, and 75 samples per second
with a coil drive frequency of 37Hz. The three parameters that make up signal
processing (number of samples, maximum percent limit, and time limit) are
described below.

Samples

375 Fast Keys 1, 4, 4, 2, 2

0 to 125 Samples

The number of samples function sets the amount of time that inputs are
collected and used to calculate the average value. Each second is divided
into tenths (1/10) with the number of samples equaling the number of 1/10
second increments used to calculate the average.

For example, a value of:

1 averages the inputs over the past 1/10 second

10 averages the inputs over the past 1 second

100 averages the inputs over the past 10 seconds

125 averages the inputs over the past 12.5 seconds

% Limit

375 Fast Keys 1, 4, 4, 2, 3

5-32

0 to 100 Percent

The maximum percent limit is a tolerance band set up on either side of the
running average. The percentage value refers to deviation from the running
average. For example, if the running average is 100 gal/min, and a 2 percent
maximum limit is selected, then the acceptable range is from 98 to 102
gal/min.

Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Values within the limit are accepted while values outside the limit are analyzed
to determine if they are a noise spike or an actual flow change.

Time Limit

375 Fast Keys 1, 4, 4, 2, 4

0 to 256 Seconds

The time limit parameter forces the output and running average values to the
new value of an actual flow rate change that is outside the percent limit
boundaries. It thereby limits response time to flow changes to the time limit
value rather than the length of the running average.

For example, if the number of samples selected is 100, then the response
time of the system is 10 seconds. In some cases this may be unacceptable.
By setting the time limit, you can force the 8750WA12 to clear the value of the
running average and re-establish the output and average at the new flow rate
once the time limit has elapsed. This parameter limits the response time
added to the loop. A suggested time limit value of two seconds is a good
starting point for most applicable process fluids. The selected signal
processing configuration may be turned ON or OFF to suit your needs.

Coil Drive Frequency

375 Fast Keys 1, 4, 4, 3

LOI Key AUX. FUNCTION

Coil drive frequency allows pulse-rate selection of the sensor coils.

5 Hz

The standard coil drive frequency is 5 Hz, which is sufficient for nearly all
applications.

37 Hz

If the process fluid causes a noisy or unstable output, increase the coil drive
frequency to 37 Hz. If the 37 Hz mode is selected, perform the auto zero
function with no flow and a full sensor.

Low Flow Cutoff

375 Fast Keys 1, 4, 4, 4

LOI Key AUX. FUNCTION

Low flow cutoff sets the flow rate between 0.01 and 38.37 f/s, below which the
outputs are driven to zero flow. The units format for low flow cutoff cannot be
changed. It is always displayed as feet per second regardless of the PV Units
format selected. The low flow cutoff value applies to both forward and reverse
flows.

Primary Variable Damping

375 Fast Keys 1, 4, 4, 5

LOI Key DAMPING

0 to 256 Seconds

Primary Variable Damping allows selection of a response time, in seconds, to
a step change in flow rate. It is most often used to smooth fluctuations in
output.

5-33

Reference Manual

00809-0100-4750, Rev AA

Rosemount 8750WA

July 2009

Device Info Information variables are used for identification of Flowmeters in the field and

375 Fast Keys 1, 4, 6

LOI Key XMTR INFO

to store information that may be useful in service situations. Information
variables have no effect on flowmeter output or process variables.

Manufacturer

375 Fast Keys 1, 4, 6, 1

LOI Key XMTR INFO

Manufacturer is an informational variable provided by the factory. For the
Rosemount 8750WA12, the Manufacturer is Rosemount.

Tag

375 Fast Keys 1, 4, 6, 2

LOI Key XMTR INFO

Tag is the quickest variable to identify and distinguish between flowmeters.
Flowmeters can be tagged according to the requirements of your application.
The tag may be up to eight characters long.

Descriptor

375 Fast Keys 1, 4, 6, 3

LOI Key XMTR INFO

Descriptor is a longer user-defined variable to assist with more specific
identification of the particular flowmeter. It is usually used in multi-flowmeter
environments and provides 16 characters.

Message

375 Fast Keys 1, 4, 6, 4

LOI Key XMTR INFO

The message variable provides an even longer user-defined variable for
identification and other purposes. It provides 32 characters of information and
is stored with the other configuration data.

Date

375 Fast Keys 1, 4, 6, 5

LOI Key XMTR INFO

Date is a user-defined variable that provides a place to save a date, typically
used to store the last date that the transmitter configuration was changed.

Device ID

375 Fast Keys 1, 4, 6, 6

LOI Key AUX. FUNCTION

This function displays the Device ID of the transmitter. This is one piece of
information required to generate a license code to enable diagnostics in the
field.

Sensor Serial Number

375 Fast Keys 1, 4, 6, 7

5-34

The PV sensor serial number is the serial number of the sensor connected to
the transmitter and can be stored in the transmitter configuration for future
reference. The number provides easy identification if the sensor needs
servicing or for other purposes.

Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Sensor Tag

375 Fast Keys 1, 4, 6, 8

Sensor Tag is the quickest and shortest way of identifying and distinguishing
between sensors. Sensors can be tagged according to the requirements of
your application. The tag may be up to eight characters long.

Write Protect

375 Fast Keys 1, 4, 6, 9

Write protect is a read-only informational variable that reflects the setting of
the hardware security switch. If write protect is ON, configuration data is
protected and cannot be changed from a HART-based communicator, the
LOI, or control system. If write protect is OFF, configuration data may be
changed using the communicator, LOI, or control system.

Revision Numbers

375 Fast Keys 1, 4, 6, 10

Revision numbers are fixed informational variables that provide the revision
number for different elements of your HART Communicator and Rosemount
8750WA12. These revision numbers may be required when calling the factory
for support. Revision numbers can only be changed at the factory and are
provided for the following elements:

NOTE

To access these features, you must scroll to this option in the HART Field
Communicator.

Universal Revision Number

375 Fast Keys 1, 4, 6, 10, 1

Universal revision number – Designates the HART Universal Command
specification to which the transmitter is designed to conform.

Field Device Revision Number

375 Fast Keys 1, 4, 6, 10, 2

Field device revision number – Designates the revision for the Rosemount
8750WA12 specific command identification for HART compatibility.

Software Revision Number

375 Fast Keys 1, 4, 6, 10, 3

This function displays the software revision number of the transmitter. This is
one piece of information required to generate a license code to enable
diagnostics in the field.

Final Assembly Number

375 Fast Keys 1, 4, 6, 10, 4

LOI Key XMTR INFO

Final Assembly Number – Factory set number that refers to the electronics of
your flowmeter. The number is configured into the flowmeter for later
reference.

5-35

Rosemount 8750WA

Reference Manual

00809-0100-4750, Rev AA

July 2009

Construction Materials

375 Fast Keys 1, 4, 6, 11

LOI Key XMTR INFO

Construction materials contain information about the sensor that is connected
to the transmitter. This information is configured into the transmitter for later
reference. This information can be helpful when calling the factory for support.

NOTE

To access these features, you must scroll to this option in the HART Field
Communicator.

Flange Type

375 Fast Keys 1, 4, 6, 11, 1

LOI Key XMTR INFO

Flange type enables selection of the flange pressure rating for the flowmeter
system. This variable only needs to be changed if the sensor has been
replaced. Options for this value are:

• 150# ANSI

• 300# ANSI

• Wafer

•Other

Flange Material

375 Fast Keys 1, 4, 6, 11, 2

LOI Key XMTR INFO

Flange material enables selection of the flange material for the magnetic
transmitter system. This variable only needs to be changed if the sensor has
been replaced. Options for this value are:

• Carbon Steel

• 304 Stainless Steel

• 316 Stainless Steel

• Wafer

•Other

Electrode Type

375 Fast Keys 1, 4, 6, 11, 3

LOI Key XMTR INFO

Electrode type enables selection of the electrode type of the magnetic
flowmeter system. This variable only needs to be changed if the electrodes or
entire sensor assembly have been replaced. Options for this value are:

• Standard

• Std & Ground

• Bullet

•Other

5-36

Reference Manual

00809-0100-4750, Rev AA
July 2009

Rosemount 8750WA

Electrode Material

375 Fast Keys 1, 4, 6, 11, 4

LOI Key XMTR INFO

Electrode Material enables selection of the electrode material for the
magnetic flowmeter system. This variable only needs to be changed if the
electrodes or entire sensor assembly have been replaced. Options for this
value are:

• 316L SST

• Nickel Alloy 276 (UNS N10276)

•Other

Liner Material

375 Fast Keys 1, 4, 6, 11, 5

LOI Key XMTR INFO

Liner material enables selection of the liner material for the attached sensor.
This variable only needs to be changed if the sensor has been replaced.
Options for this value are:

• PTFE

• Polyurethane

• Neoprene

•Other

5-37

Rosemount 8750WA

p

t

p

p

g

t

t

Figure 5-2. Field Communicator Menu Tree for the Rosemount 8750WA12

Reference Manual

00809-0100-4750, Rev AA

July 2009

1. Total Control

2. Total Mode

1. Control 2

1. Control 1

3. Total High Limit

4. Total Low Limit

5. Total Limit Hysteresis

2. Mode 2

3. High Limit 2

4. Low Limit 2

5. Flow Limit Hysteresis

2. Mode 1

3. High Limit 1

4. Low Limit 1

1. Test Condition

2. Test Criteria

3. 8714i T est Result

4. Simulated Velocity

5. A ctual V eloci ty

6. V elocity Deviation

Coil Resistence

Coil Signature

Electrode Resistence

1.2.3.

1. S ignatur e V alues

2. R e- Signatur e Meter

3. Recall L ast Saved Values

5. Flow Limit Hysteresis

1. R un 8714i Veri cation

1. E P V alue

2. EP Trig. Level

3. E P Counts

Resul

7. X mtr Cal Test R esul t

8. Tube Cal Deviation

9. Tube Cal Test Result

- Coil Circuit Test Result

- E lec trode C irc uit T est

PV Loop Current

PV Alarm Type

1. PV UR V

2. PV L RV 3.4.

5. AO Loop Test

6. D/A Tri m

7. S cal ed D/A Tr im

8. A larm Level

1. Control 1

2. Mode 1

3. High Limit 1

4. Low Limit 1

5. Flow Limit Hysteresis

1. Control 2

2. Mode 2

3. High Limit 2

4. Low Limit 2

1. Coil Resistance

2. C oi l Si gnature

3. E l ectrode R esis tance

1. Configure I/O 1

2. DIO 1 Control

3. Digital Input 1

4. Digital Output 1

Pul se Output L oop T est

1. Pulse Scaling

2. Pulse W idth

3.

1. Devi ce ID

1. No F low Li mit

2. Fl owing, Limit

3. Empty Pi pe Li mit

2. 8714i R esults

3. F low tube Si gnature

4. Set Pass/Fail Criteria

5. M easur ements

2. L icense Key

1. DI/DO 1

2. DO 2

3. Flow Limit 1

4. Flow Limit 2

5. Total Limit

6. Diagnostic Status Alert

1. Volume Unit

2. Base V olume Unit

3. C onver sion N umber

4. B ase Time Unit

5. F low R ate U nit

1. L icense Status

2. L icense Key

1. PV Units

2. Special Units

5. Flow Limit Hysteresis

1. Total Control

2. Total Mode

3. Total High Limit

4. Total Low Limit

5. Flow Limit Hysteresis

r

1. Totalizer Units

2. Gross T otal

3. N et T otal

4. R everse Total

5. S tart T otali zer

6. Stop Totaliz er

7. R eset T otali ze

1. T V i s

2. QV is

1. V ariable Mapping

2. Poll A ddress

3. # of R eq Preams

1. L anguage

2. Fl owrate D isplay

3. Totalizer Display

4. Di splay Lock

1. Status

2. Samples

3. % Limit

4. Ti me L imi t

1. Universal Rev

4. # of R esp Preams

5. B urst Mode

6. B urs t Option

1. F lan ge Ty pe

2. F lange Materi al

3. Electrode Type

4. E l ectrode Ma terial

2. T rans mitter R ev

3. Software R ev

4. Final Assembly #

5. L iner Material

1. Test Condition

2. Test Criteria

3. 8714i T est Result

4. Simulated Velocity

5. A ctual V eloci ty

6. Velocity Deviation

4. Tune Empty Pipe

5. Electronics Temp

6. Flow Limit 1

7. Flow Limit 2

3. Pulse Output Loop Test

3. N et T otal

4. R everse Total

PV Loop Current

3.

4. T otal izer Setup

PV Loop Current

2. PV

3.

8. Total Limit

1. 8714i C alibration Veri cation

2. L icensing

r

1. E P V alue

2. E lectroni cs Temp

3. L i ne Noi se

4. 5 Hz SNR

5. 37 Hz SNR

6. Signal Power

7. 8714i R esults

5. S tart T otali zer

6. Stop Totalizer

7. R eset T otali ze

5. Pulse Output

1. D iagnos tic C ontrols

2. B asic Diagnosti cs

3. A dvanc ed Dia gnostics

4. D iagnostic V ari ables

5. T rims

6. V iew Status

2. Di agnostics

4. PV L RV

5. PV UR V

1. Self T est

2. A O L oop T est

1. Totalizer Units

2. Gross T otal

1. PV

2. PV % rnge

1. Process

Variables

1. Devi ce

Setup

5-38

Resul

7. X mtr Cal Test R esul t

8. Tube Cal Deviation

9. Tube Cal Test Result

- Coil Circuit Test R esult

- E lec trode Ci rcui t Tes t

an

1. Coil Drive Freq

2. Density Value

1. D/A Tri m

2. S cal ed D/A Tr im

3. Di gital Tri m

4. A uto Z ero

1. T ag

3. B asic

3. PV U SL

in

2. Fl ow Units

3. L i ne Siz e

4. PV UR V

5. PV L RV

6. Calibration Number

7. PV Dam

Setup

1. A nalog O utput

4. PV LSL

5. PV M in S

u

2. Pulse Output

3. DI/DO Output

4. R everse Flow

5. T otal izer Setup

6. A larm Level

7. HA R T Out

1. Additional Params

4. Detailed

Setup

1. Operating Mode

2. M an C onfig D SP

3. Coil Drive Freq

4. L ow Flow Cuto

5. PV D amping

1. Manufacturer

2. T ag

3. Descriptor

4. Message

5. Date

6. Devi ce ID

7. PV Sensor S/N

8. Fl owtube Tag

9. W ri te Protect

- R evi sion No.

- C onstructi on Mater ials

Device Info

2. C onfi gure Output

3. L OI C onfig

4. Signal Processing

5.

5. R eview