Rosemount 8712ES Operating Manual

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Reference Manual

00809-0100-4664, Rev BA January 2010

Rosemount 8712

Remote Mount Magnetic Flowmeter System

www.rosemount.com

Reference Manual

NOTICE

00809-0100-4664, Rev BA January 2010

Rosemount 8712

Remote Mount Magnetic Flowmeter System

Read this manual before working with the product. For personal and system safety, and for optimum product performance, make sure you thoroughly understand the contents before installing, using, or maintaining this product.

Rosemount Inc. has two toll-free assistance numbers:

Customer Central

Technical support, quoting, and order-related questions. United States - 1-800-999-9307 (7:00 am to 7:00 pm CST) Asia Pacific- 65 777 8211 Europe/ Middle East/ Africa - 49 (8153) 9390

North American Response Center

Equipment service needs. 1-800-654-7768 (24 hours—includes Canada) Outside of these areas, contact your local Emerson Process Management representative.

The products described in this document are NOT designed for nuclear-qualified applications. Using non-nuclear qualified products in applications that require nuclear-qualified hardware or products may cause inaccurate readings.

For information on Rosemount nuclear-qualified products, contact your local Emerson Process Management Sales Representative.

www.rosemount.com

Reference Manual

00809-0100-4664, Rev BA January 2010

Rosemount 8732

SECTION 1 Introduction

SECTION 2 Installation

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

Conduit Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Sensor to Remote Mount Transmitter Connections . . . . . . . . . . 2-15

SECTION 3 Configuration

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Installation Check and Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Local Operator Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

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

Data Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Selecting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

LOI Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Table Value Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Select Value Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Diagnostic Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Review. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Process Variables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

PV - Primary Variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

PV -% Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

PV - Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Totalizer Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Pulse Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

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Basic Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Tag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Flow Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Line Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

PV URV (Upper Range Value) . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

PV LRV (Lower Range Value). . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Calibration Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

PV Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

SECTION 4 Operation

SECTION 5 Sensor Installation

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

Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Diagnostic Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Basic Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Advanced Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Diagnostic Variable Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Trims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Advanced Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Detailed Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Additional Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Configure Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17

LOI Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31

Signal Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31

Universal Auto Trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

Device Info. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Sensor Handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Sensor Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Upstream/Downstream Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Sensor Orientation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Flow Direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Installation (Flanged Sensor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Flange Bolts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Installation (Wafer Sensor). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

Flange Bolts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

Installation (Sanitary Sensor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

Alignment and Bolting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

Grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

Process Leak Protection (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Standard Housing Configuration . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Relief Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Process Leak Containment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

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SECTION 6 Maintenance and Troubleshooting

APPENDIX A Reference Data

APPENDIX B Approval Information

APPENDIX C Diagnostics

Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Installation Check and Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Diagnostic Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Transmitter Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Quick Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Step 1: Wiring Errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Step 2: Process Noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Step 3: Installed Sensor Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Step 4: Uninstalled Sensor Tests . . . . . . . . . . . . . . . . . . . . . . . . 6-10

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

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6

Physical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8

Rosemount 8712E Ordering Information . . . . . . . . . . . . . . . . . . . . . . A-9

Product Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Approved Manufacturing Locations . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

European Directive Information. . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Hazardous Locations Certifications. . . . . . . . . . . . . . . . . . . . . . . . B-1

Sensor Approval Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

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

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

Licensing the 8712 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-8

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

8714i Meter Verification Test Parameters. . . . . . . . . . . . . . . . . . . C-9

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

Optimizing the 8714i Meter Verification. . . . . . . . . . . . . . . . . . . . C-13

Troubleshooting the 8714i Meter Verification Test . . . . . . . . . . . C-14

8714i Meter Verification Functionality . . . . . . . . . . . . . . . . . . . . . C-14

Rosemount Magnetic Flowmeter Calibration Verification Report. . . C-16

APPENDIX D Digital Signal Processing

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

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

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

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

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

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APPENDIX E Universal Sensor Wiring Diagrams

APPENDIX F HART Field Communicator Operation

Rosemount Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-3

ABB Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-7

Brooks Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-9

Endress And Hauser Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-11

Fischer And Porter Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-15

Foxboro Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-22

Kent Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-28

Krohne Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-30

Siemens Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-33

Taylor Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-34

Toshiba Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-36

Yamatake Honeywell Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-37

Yokogawa Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-38

Generic Manufacturer Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-39

HandHeld Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1

Connections and Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2

Basic Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3

Action Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3

Alphanumeric and Shift Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-4

Fast Key Feature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-5

Menus and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-5

Main Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-5

Online Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-6

Diagnostic Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-7

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Section 1 Introduction

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

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

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

Rosemount 8712

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 four Rosemount magnetic flowmeter sensors:

• Flanged Rosemount 8705

• Flanged High-Signal Rosemount 8707

• Wafer-Style Rosemount 8711

• Sanitary Rosemount 8721

There are two Rosemount magnetic flowmeter transmitters:

• Rosemount 8712

• Rosemount 8732

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 electronicall y conditions the voltage detected by the electrodes to provide a flow sign al. The transmitter can be integrally or remotely mounted from the sensor.

This manual is designed to assist in the installation and operatio n of the Rosemount 8712 Magnetic Flowmeter Transmitter and the Rosemount 8700 Series Magnetic Flowmeter Sensors.

8700 Series Magnetic Flowmeter System consists of a

www.rosemount.com

Reference Manual

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

00809-0100-4664, Rev BA

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January 2010

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 8705, Rosemount 8707 High-Signal, Rosemount 8711, or Rosemount 8721 Magnetic Sensors with the Rosemount 8712 or Rosemount 8732 Magnetic Flowmeter Transmitter 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

Rosemount 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

00809-0100-4664, Rev BA January 2010

Rosemount 8712

Section 2 Installation

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 oper ation in thi s 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 8712 to a non-Rosemount sensor that is located in an explosive atmosphere.

www.rosemount.com

Rosemount 8712

Reference Manual

00809-0100-4664, Rev BA

January 2010

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 8712 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 8712 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 , an d en vir onm en tal req uir em e nts

Mechanical Considerations

The mounting site for the Rosemount 8712 transmitter should pr ovide 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 the conduit from collecting in the transmitter.

The 8712 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

/2–14 NPT

Conduit

Connection

(4 Places)

WITH ST ANDARD COVER

NOTE

Dimensions are in inches (millimeters)

2.96 (75)

WITH LOI COVER

00809-0100-4664, Rev BA January 2010

Figure 2-1. Rosemount 8712 Dimensional Drawing

Rosemount 8712

2-3

Rosemount 8712

Reference Manual

00809-0100-4664, Rev BA

January 2010

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 8712 transmitters require ex te rn al po we r an d th er e mu st be access to a suitable power source.

Rosemount 8712 installation includes both detaile d 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 8712 to the mounting plate using the mounting screws.

Surface Mounting

To surface mount the transmitter:

1. Attach the 8712 to the mounting location using the mounting screws.

Identify Options and Configurations

The standard application of the 8712 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 8712 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

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Rosemount 8712

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 8712 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 8712 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 mu ltidrop configur ations. A 10–3 0 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 8712 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 sm all scr ewd r iver.

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

2-5

Rosemount 8712

Figure 2-2. Rosemount 8712 Electronics Board and Hardware Switches

Reference Manual

00809-0100-4664, Rev BA

January 2010

Conduit Ports and Connections

Both the sensor and transmitter junction boxes have ports for 1/2-in. 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/flameproof 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 e lectrode 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 an d 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

Maximum Resis cetan

Supply Voltage 12– VDC

1amp

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

00809-0100-4664, Rev BA January 2010

Rosemount 8712

Figure 2-3. Cable Preparation Detail

Electrical Considerations Before making any electrical connections to the Rosemount 8712, consider

the following standards and be sure to have the pro per power supply, conduit, and other accessories.

Transmitter Input Power

The 8712 transmitter is designed to be powered by 90-250 V AC, 50–60 Hz or 12–42 V DC. The eight digit in the transmitter model number designates the appropriate power supply requirement.

Model Number Power Supply Requirement

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

Supply Wire Temperature Rating

Use 12 to 18 AWG wire. 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 cu rren t. 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 8712

1.0

0.8

0.6

0.4

0.2

20 30

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

00809-0100-4664, Rev BA

January 2010

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)

12.5 V DC

Supply ft (m)

25 (8)

(12)

(19)

(30) 157

(48) 250

(76)

12.5 V DC

Supply ft (m)

(11)

(18)

(29)

151

(46)

241

(73)

Figure 2-4. Supply Current versus Input Voltage

2-8

Reference Manual

Transmitter

Power Cable

AC Neutral or

AC Line or

AC Ground or DC Ground

Fuse

00809-0100-4664, Rev BA January 2010

Rosemount 8712

Installation Category The installation category for the Rosemount 8712 is

(Overvoltage) Category II.

Overcurrent Protection The Rosemount 8712 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 2 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 the application of the 8712 includes the use of options such as multidrop communications, 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 8712.

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 8712

–4–20 mA power

+4–20 mA power

Fuse

Reference Manual

00809-0100-4664, Rev BA

January 2010

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 Co nsiderations on pa ge 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 Te rminal 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

 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

–

00809-0100-4664, Rev BA January 2010

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

Rosemount 8712

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

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 Figu re 2-9 for more deta ils on this connection.

2-11

Rosemount 8712

DC–

DC+

Fuse

Control Relay or Input

Reference Manual

00809-0100-4664, Rev BA

January 2010

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

Outputs

Coil Drive and Electrode Cables

Power

Outputs

Power

Outputs

00809-0100-4664, Rev BA January 2010

Rosemount 8712

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 as shown in Figures 4-13, 4-14, 4-15, and 4-16. 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 2-13.

Correct Incorrect

2-13

Rosemount 8712

1.00 (26)

NOTE Dimensions are in inches (millimeters).

Cable Shield

Reference Manual

00809-0100-4664, Rev BA

January 2010

Table 2-3. Cable Requirements

Description Units Part Number

Signal Cable (20 AWG) Belden 8762, Alpha 2411 equivalent ftm08712-0061-0001

Coil Drive Cable (14 AWG) Belden 8720, Alpha 2442 equivalent ftm08712-0060-0001

Combination Signal and Coil Drive Cable (18 AWG)

(1) Combination signal and coil drive cable is not recommended for

high-signal magmeter system. For remote mount installati ons, combination signal and coil drive cable should be limited to less than 300 ft. (100 m).

(1)

Rosemount recommends using the combination signal and coil drive for N5, E5 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.

08712-0061-0003

08712-0060-0003

ftm08712-0752-0001

08712-0752-0003

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 e lectrode cables between the flowmeter and transmitter.

Prepare the ends of the coil drive and electrode cables as shown in Figure 2-12. Limit the unshielded wire length to 1-inch o n both the ele ctrode and co il drive cables.

NOTE

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

Figure 2-12. Cable Preparation Detail

2-14

Reference Manual

00809-0100-4664, Rev BA January 2010

Rosemount 8712

Sensor to Remote Mount Transmitter Connections

Figure 2-13. Wiring Diagram

Connect coil drive and electrode cables as shown in Figure 2-13.

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.

Rosemount 8712 Transmitter Rosemount 8705/8707/8711/8721 sensors

11 2 2

17 17 18 18 19 19

2-15

Rosemount 8712

Reference Manual

00809-0100-4664, Rev BA

January 2010

2-16

Reference Manual

00809-0100-4664, Rev BA January 2010

Rosemount 8712

Section 3 Configuration

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1

Installation Check and Guide . . . . . . . . . . . . . . . . . . . . . .page 3-1

Basic Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-3

LOI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 3-4

Diagnostic Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-6

Process Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 3-6

Basic Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-8

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

procedures for the Rosemount 8712 Magnetic Flowmeter Transmitter. For information on connecting another manufacturer’s sensor , refer to “Universal Sensor Wiring Diagrams” on page E-1.

The Rosemount 8712 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 3-1. Parameters

Basic Set-up Parameters Page

Review page 3-6

Process Variables page 3-6

Basic Setup page 3-8

Flow Units page 3-8

Range Values page 3-11

PV Sensor Calibration Number page 3-12

Totalizer Setup page 3-7

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

Before You Begin

www.rosemount.com

Rosemount 8712

Reference Manual

00809-0100-4664, Rev BA

January 2010

Transmitter

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

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 a nalog 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 inst a llations , ensu re that the ele ctrodes 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.

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.

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.

LOCAL OPERATOR INTERFACE

3-2

Refer to Section 6 "Maintenance and Troubleshooting" for further information.

The optional Local Operator Interface (LOI) provides an operator communications center for the 8712. By usin g th e LO I, th e op er at or can access any transmitter function for changing configuration paramete r settings, checking totalized values, or other functions. The LOI is integral to the transmitter housing.

Reference Manual

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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BASIC FEATURES The basic features of the LOI include display control, tot al izer, data entry, and

transmitter parameters. These features provide control of all transmitter functions, see Figure 3-1.

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 8712 through the AUX. FUNCTION key.

Figure 3-1. Local Operator Interface Keypad

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,

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

5. Press ENTER.

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 l,&, +, -, *, /, $, @,%, and the blank space. (INCR. is also used to toggle throu gh pre- determined ch oices that do not require data entry.)

change them.

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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 3-1 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 TUBE SIZE.

2. Press SHIFT or INCR. to increase (incrementa lly) 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 tube 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.

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

Table 3-2. 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

• 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

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Table 3-2. LOI Data Entry Keys and Functions

Transmitter Parameters

Keys

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

Tube 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

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 3-3 on page 3-9

Run 8714i Operating Mode Coil Pulse Mode Flow rate Display Totalizer Display Totalizer Units Signal Processing Special Units Process Density DI/DO 1 Config Digital Output 2 Flow Limit 1 Flow Limit 2 Totalizer Limit Diagnostic Status Alert Reverse Flow Enable Licensed Options 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

Options 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 unit s , conversion, time base, rate unit s Required for units of mass flow Configure Auxiliary Channel 1 Configure Auxiliary Channel 2 Configure Flow Limit 1 Alert Configure Flow Limit 2 Alert Configure Totalizer Limit Alert Configure Diagnostic Status Alert 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 8712

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DIAGNOSTIC MESSAGES

The following error messages may appear on the LOI screen. See “Maintenance and Troubleshooting” on page 6-1 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 8712 includes a capability that enables you to review the configuration

Fast Keys 1, 5

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

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 flowmete r in a proc es s application

Process Variable (PV) – The actual measured flow rate in the line. Use the Process Variable Units function to select the units for yourapplication.

Percent of Range – The process variable as a percentage of the Analog Output range, provides an indication where the current flow of the meter is within 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 standar d 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.

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

Fast Keys 1, 1, 1

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

Fast Keys 1, 1, 2

percentage of the configured span.

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

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

Fast Keys 1, 1, 4

LOI Key AUX. FUNCTION

totalizer parameters.

Totalizer Units

Fast Keys 1, 1, 4, 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

Fast Keys 1, 1, 4, 2

LOI Key TOTALIZE

Measured gross total provides the output reading of the tot alizer. 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

Fast Keys 1, 1, 4, 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, th e net tota l represent s the difference between the total flow in the forward dir ection less the tot al flow in the reverse direction.

Measured Reverse Total

Fast Keys 1, 1, 4, 4

LOI Key TOTALIZE

Measured reverse total provides the output reading of th e tota lizer. 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

Fast Keys 1, 1, 4, 5

LOI Key START/STOP

Start totalizer starts the totalizer counting from its current value.

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Stop Totalizer

Fast Keys 1, 1, 4, 6

LOI Key START/STOP

Stop totalizer in terrupts the totalizer count until it is restarted again. This feature is often used during pipe cleaning or other main te na nce operations.

Reset Totalizer

Fast Keys 1, 1, 4, 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.

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

Fast Keys 1, 1, 5

January 2010

BASIC SETUP The basic configuration functions of the Rosemount 8712 must be set for all

Fast Keys 1, 3

applications of the transmitter in a magnetic flowmeter system. If your application requires the advanced functionality features of the Rosemount 8712, see Section 4 "Operation" of this manual.

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

Fast Keys 1, 3, 1

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

Fast Keys 1, 3, 2

analog output of the transmitter.

Primary Variable Units

Fast Keys 1, 3, 2, 1

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 3-3. Options for Flow Rate Units

Rosemount 8712

• 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

•ft

/sec • kg/hr

•ft3/min • kg/day

•ft

/hr • (s)tons/min

•ft3/day • (s)tons/hr

/sec • (s)tons/day

•m

•m3/min • (m)tons/min

/hr • (m)tons/hr

•m

•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 3-9)

Special Units

Fast Keys 1, 3, 2, 2

LOI Key AUX. FUNCTION

The Rosemount 8712 provides a selection of standard u nit configurations that meet the needs of most applications (see “Flow Units” on page 3-8). If your application has special needs and the standard configurations do not apply, the Rosemount 8712 provides the flexibility to configure the transmitter in a custom-designed units format using the special units variable.

Special Volume Unit

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 desired special units are cubic cm/min, the special volume vari able can be repr esente d as cc or cm3. The volume units variable is also used in totalizing the special units flow.

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Base Volume Unit

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

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 liters to cm3 and there are 0.001 liters in a cm3, the conversion factor is 0.001.

Base Time Unit

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

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 8712 LOI will display the four character designation as configured.

Example To display flow in cubic cm per minute, and one cm3 is equal to 0.001 liters,

the procedure would be: Set the Volume Unit to cm3 or cc.

Set the Base Volume Unit to liters. Set the Input Conversion Number to 0.001. Set the Time Base to Min. Set the Rate Unit to CC/M.

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

Fast Keys 1, 3, 3

LOI Key TUBE 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:

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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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PV URV (Upper Range Value)

Fast Keys 1, 3, 4

LOI Key ANALOG

OUTPUT RANGE

PV LRV (Lower Range Value)

Fast Keys 1, 3, 5

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 must be selected prior to configuration of URV and LRV.

Set the lower range value (LRV), or analog output zero, 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 analog zero 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

Fast Keys 1, 3, 6

LOI Key TUBE 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 8712. 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 th an Rosem ou nt Inc. can als o 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 Rosemount 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

Fast Keys 1, 3, 7

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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Section 4 Operation

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

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 4-1

Basic Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 4-2

Advanced Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 4-7

Advanced Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-16

Detailed Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-16

INTRODUCTION This section contains information for advanced configuration parameters and

diagnostics. The software configuration settings fo r the Rosemount 8712 can be accesse d

through a HART-based communicator, Local Operator Interface (LOI), or through a control system. The software functions for the Field Communicator are described in detail in this section of the manual. It provides an overview and summary of communicator functions. For more complete instructions, see the communicator manual. Before operating the Rosemount 871 2 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

Field Comm. 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 8712 transmitter are Empty Pipe detection, Electronics Temperature monitoring, Coil Fault detection, and various loop and transmitter tests.

Advanced diagnostics suite option one (DA1 op tion) con tains adva nc ed 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

Field Comm. 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 8712

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Empty Pipe

Field Comm. 1, 2, 1, 1

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

High Process Noise

Field Comm. 1, 2, 1, 2

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

Grounding / Wiring

Field Comm. 1, 2, 1, 3

Turn the grounding / wiring diagnostic on or of f as re quired by the application. For more details on the grounding / wiring diagnostic, see Appendix C: "Diagnostics".

Electronics Temperature

Field Comm. 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 Th e basic diagnostics menu con tain s all of the st an dard diagno stics and test s

Field Comm. 1, 2, 2

that are available in the 8712 transmitter.

Self Test

Field Comm. 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

Field Comm. 1, 2, 2, 2

LOI Key AUX. FUNCTION

The AO Loop test allows you to drive the transmitter output to a desired electrical current output on terminals 1 and 2. The user then has the ability to independently measure the actual loop current against the desired level set by the transmitter. On the LOI, the test will end after five minutes if the transmitter is not returned to normal operation manually.

4-2

4 mA

Field Comm. 1, 2, 2, 2, 1

Fix the analog loop current at 4 mA.

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20 mA

Field Comm. 1, 2, 2, 2, 2

Fix the analog loop current at 20 mA.

Simulate Alarm

Field Comm. 1, 2, 2, 2, 3

Send the analog output into an alarm mA value. Actual mA value depends o n 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

Field Comm. 1, 2, 2, 2, 4

Fix the analog loop current to some other mA va lue between 3 .5 mA and 23.0 mA.

End

Field Comm. 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

Field Comm. 1, 2, 2, 3

LOI Key AUX. FUNCTION

The Pulse Output Loop Test allows you to drive the frequency output at terminals 3 and 4 to a desired value. The user then has the ability to compare the pulse output value measured by auxiliary equipment to the desired pulse output level set by the transmitter. On the LOI the test will end after five minutes if the transmitter is not returned to normal operation manually.

Select Value

Field Comm. 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

Field Comm. 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

Field Comm. 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 p arameter see Appendix C: "Diagnostics".

Empty Pipe Value

Field Comm. 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".

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Empty Pipe Trigger Level

Field Comm. 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

Field Comm. 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

Field Comm. 1, 2, 2, 5

LOI Key XMTR INFO

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

Flow Limit 1

Field Comm. 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 cert ain flow co nditions 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

Field Comm. 1, 2, 2, 6, 1

Turns the Flow Limit 1 ON or OFF.

ON – The transmitter will generate a HART alert when the defined conditions are met. If a digital output is configured for Flow Limit 1, the digital output will activate when the conditions for mode 1 are met.

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

Mode 1

Field Comm. 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.

4-4

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

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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

Field Comm. 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

Field Comm. 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

Field Comm. 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

Field Comm. 1, 2, 2, 7

LOI Key AUX. FUNCTION

Control 2

Field Comm. 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.

Mode 2

Field Comm. 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.

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High Limit 2

Field Comm. 1, 2, 2, 7, 3

Set the flow rate value that corresponds to the high limit set point for the Flow Limit 2 alert. If a digital output is configured for Flow Limit 1, the digi tal output will activate when the conditions for mode 1 are met.

Low Limit 2

Field Comm. 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

Field Comm. 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

Field Comm. 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 cert ain flow co nditions 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

Field Comm. 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.

Total Mode

Field Comm. 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.

4-6

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

Field Comm. 1, 2, 2, 8, 3

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

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Total Low Limit

Field Comm. 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

Field Comm. 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

Field Comm. 1, 2, 3

diagnostics and tests that are available in the 8712 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 op tion) con tains adva nc ed diagnostics for High Process Noise detection and Grounding and Wiring fault detection.

8714i Meter Verification

Field Comm. 1, 2, 3, 1

LOI Key AUX. FUNCTION

This diagnostic allows you to test and verify that the sensor, transmitter, or both are working within specifications. For more details on this diagnostic, see Appendix C: "Diagnostics".

Run 8714i

Field Comm. 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

Field Comm. 1, 2, 3, 1, 1, 1

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

Transmitter Only

Field Comm. 1, 2, 3, 1, 1, 2

Run the internal meter verification to validate the transmitter only.

Sensor Only

Field Comm. 1, 2, 3, 1, 1, 3

Run the internal meter verification to validate the sensor only.

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8714i Results

Field Comm. 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

Field Comm. 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

Field Comm. 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

Field Comm. 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

Field Comm. 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".

Actual Velocity

Field Comm. 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".

Velocity Deviation

Field Comm. 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

Field Comm. 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

Field Comm. 1, 2, 3, 1, 2, 8

4-8

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

Sensor Calibration Test Result

Field Comm. 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".

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Coil Circuit Test Result

Field Comm. 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

Field Comm. 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

Field Comm. 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 t ake 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

Field Comm. 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".

Coil Resistance

Field Comm. 1, 2, 3, 1, 3, 1, 1

View the base line value for the coil resistance taken during the sensor signature process.

Coil Signature

Field Comm. 1, 2, 3, 1, 3, 1, 2

View the base line value for the coil si gnature taken during the sensor signature process.

Electrode Resistance

Field Comm. 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

Field Comm. 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".

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Recall Last Saved Values

Field Comm. 1, 2, 3, 1, 3, 3

LOI Key AUX. FUNCTION

Recalls the last saved “good” values for the sensor signature.

Set Pass/Fail Criteria

Field Comm. 1, 2, 3, 1, 4

LOI Key AUX. FUNCTION

Set the maximum allowable deviation percentage test criteria for the 8714i Internal 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

Field Comm. 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.

Flowing Limit

Field Comm. 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.

Empty Pipe Limit

Field Comm. 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

Field Comm. 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.

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Coil Resistance

Field Comm. 1, 2, 3, 1, 5, 1

View the measured value for the coil resistance taken during the 8714i meter verification test.

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Coil Signature

Field Comm. 1, 2, 3, 1, 5, 2

View the measured value for the coil signature taken during the 8714i meter verification test.

Electrode Resistance

Field Comm. 1, 2, 3, 1, 5, 3

View the measured value for the electrode resistance taken during the 8714i meter verification test.

Licensing

Field Comm. 1, 2, 3, 2

LOI Key AUX. FUNCTION

If a diagnostic suite or the auxiliary output option was not ordered initially, these features can be licensed in the field. Access the licensing information from this menu. For more details on licensing, see Appen dix C: "Diagnostics".

License Status

Field Comm. 1, 2, 3, 2, 1

Determine what capabilities have been licensed, and are available for activation.

License Key

Field Comm. 1, 2, 3, 2, 2

A license key is required to activate features in the field if the desired functionality 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

Field Comm. 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.

License Key

Field Comm. 1, 2, 3, 2, 2, 2

Allows you to enter a license key to activate the desired functionality.

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Diagnostic Variable Values

Field Comm. 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

Field Comm. 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

Field Comm. 1, 2, 4, 2

Read the current value of the Electronics Temperature.

Line Noise

Field Comm. 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.

5 Hz Signal to Noise Ratio

Field Comm. 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.

37 Hz Signal to Noise Ratio

Field Comm. 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.

Signal Power

Field Comm. 1, 2, 4, 6

Read the current value of the velocity of the fluid through the sensor. Higher velocities result in greater signal power.

8714i Results

Field Comm. 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

Field Comm. 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".

Test Criteria

Field Comm. 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".

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8714i Test Result

Field Comm. 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

Field Comm. 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

Field Comm. 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

Field Comm. 1, 2, 3, 7, 6

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

Transmitter Verification Test Result

Field Comm. 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

Field Comm. 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

Field Comm. 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

Field Comm. 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

Field Comm. 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".

NOTE

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

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Trims Trims are used to calibrate the analog loop, calibrate the transmitter, re-zero

Field Comm. 1, 2, 5

LOI Key AUX. FUNCTION

the transmitter, and calibrate the transmitter with another manufacturer’s sensor. Proceed with caution whenever performing a trim function.

D/A Trim

Field Comm. 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 your system loop. Use the following steps to complete the Output Trim function.

1. Set the loop to manual, if necessary.

2. Connect a precision ammete r in th e 4– 20 mA loo p.

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

Field Comm. 1, 2, 5, 2

LOI Key AUX. FUNCTION

Scaled D/A trim enables you to calibrate 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 pe rf or m ed usin g an am me ter wh er e 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 your method of measurement.

For example, it may be more convenient for you to make current measurements by direct voltage readings across the loop re sistor . If your loo p resistor is 500 ohms, and you want to calibrate the meter using voltage measurements made across this resistor, you could rescale your trim points from 4-20mA to 4-20mA x 500 ohm or 2-10 VDC. Once your scaled trim points have been entered as 2 and 10, you can calibrate your flowmeter by entering voltage measurements directly from the voltmeter.

Digital Trim

Field Comm. 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 you suspect the Rosemount 8712 is no longer accurate. A Rosemount 8714D Calibration Stan dard is required to complete a digit al trim. Attempting a digital trim without a Rosemount 8714D Calibration Standard may result in an inaccurate transmitter or an error message. 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.

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NOTE

Attempting a digital trim without a Rosemount 8714D Calibration Standard may result in an inaccurate transmitter, or a “DIGITAL TRIM FAILURE” message may appear . If this me ssage occurs, no values were changed in th e transmitter. Simply power down the Rosemount 8712 to clear the message.

To simulate a nominal sensor with the Rosemount 8714D Calibr at ion Standard, you must change the following four parameters in the Rosemount 8712:

1. Tube 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 4-16 in this section.

Set the loop to manual, if necessary , before you beg in. Complete the following steps:

1. Power down the transmitter.

2. Connect the transmitter to a Rosemount 8714D Calibration Standard.

3. Power up the transmitter with the Rosemount 8714D Calibration Standard connected and read the flow rate. The electronics need about a 5-minute warm-up time to stabilize.

4. Set the 8714D 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.

Auto Zero

Field Comm. 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.

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Universal Trim

Field Comm. 1, 2, 5, 5

LOI Key AUX. FUNCTION

The universal auto trim function enables the Rosemount 8712 to calibrate sensors that were not calibrated at the Rosemount factory. The function is activated as one step in a procedure known as in-process calibration. If your Rosemount sensor has a 16-digit calibration number, in-process calibration is not required. If it does not, or if your sensor is made by another manufactu rer, complete the following steps for in-process calibration.

1. Determine the flow rate of the process fluid in the sensor.

NOTE

The flow rate in the line can be determined by using another sensor in the line, by counting the revolutions of a centrifug al pump , or by pe rfo rm in g a bucket test to determine how fast a given volume is filled by the process fluid.

2. Complete the universal auto trim function.

3. When the routine is completed, the sensor is ready for use.

Status Status displays a summary of the health of the transmitter. If there are any

Field Comm. 1, 2, 6

LOI Key XMTR INFO

ADVANCED CONFIGURATION

alerts or error messages that have activated, they will be listed here.

In addition to the basic configuration options and the diagnostic information and controls, the 8712 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

Field Comm. 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

Field Comm. 1, 4, 1

parameters within the 8712 transmitter.

Coil Drive Frequency

Field Comm. 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.

4-16

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.

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Density Value

Field Comm. 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 3 r

Where: Q

is the mass flow rate

is the volumetric flow rate, and

r is the fluid density

PV Upper Sensor Limit (USL)

Field Comm. 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)

Field Comm. 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

Field Comm. 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 functionality cont ains functionality to configure the

Field Comm. 1, 4, 2

more advanced features that control the analog, pulse, auxiliary, and totalizer outputs of the transmitter.

Analog Output

Field Comm. 1, 4, 2, 1

Under this function the advanced features of the analog output can be configured.

PV Upper Range V alue (URV)

Field Comm. 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.

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NOTE

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

PV Lower Range Value (LRV)

Field Comm. 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.

Reset the lower range value (LRV), or analog output zero, 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 L RV 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 analog zero setting would be 14.67 f t/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 must be selected prior to configuration of URV and LRV.

PV Analog Output

Field Comm. 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

Field Comm. 1, 4, 2, 1, 4

The analog output alarm type displays the alarm mode the 8712 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

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Loop Test

Field Comm. 1, 4, 2, 1, 5

LOI Key AUX. FUNCTION

The loop test allows you to drive the transmitter output to a desired electrical current output on terminals 1 and 2. This capability allows you to check 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.

D/A Trim

Field Comm. 1, 4, 2, 1, 6

LOI Key AUX. FUNCTION

1. Set the loop to manual, if necessary.

2. Connect a precision ammete r in th e 4– 20 mA loo p.

3. Initiate the Output 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 completed. You may repeat the 4–20 mA trim to check the results, or use the analog output test.

Scaled D/A Trim

Field Comm. 1, 4, 2, 1, 7

LOI Key AUX. FUNCTION

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10 000gal

1min

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

60sec

1pulse

0.01gal



16666.7 Hz=

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Alarm Level

Field Comm. 1, 4, 2, 1, 8

The alarm level allows you to drive 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 4-1. 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 4-2. 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

Field Comm. 1, 4, 2, 2

LOI Key AUX. FUNCTION

Under this function the pulse output of the 8712 can be configured.

Pulse Scaling

Field Comm. 1, 4, 2, 2, 1

LOI Key PULSE OUTPUT SCALING

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 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 1 1,00 0 Hz. For e xample, if you want the Rosemoun t 8712 to pu lse eve ry time

0.01 gallons pass through the sensor , an d the flow rate is 10,000 gal/min, yo u will exceed the 10,000 Hz full-scale limit:

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Pulse Width

Period

OPEN

CLOSED

1 Cycle 200 mS

-------------------- 5 H z=

1 Cycle

1.0 mS

------------------- - 1000 Hz=

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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

Field Comm. 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 4-1 on page 4-21). These are typically lo wer 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.

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.

Figure 4-1. Pulse Output

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, se t the pulse wid th to the lowest value that is consistent with the requirements of the pulse output power source, pulse driven external totalizer, or other peripheral equipment.

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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=

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 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.

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.

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Pulse Output Loop Test

Field Comm. 1, 4, 2, 2, 3

LOI Key AUX. FUNCTION

The Pulse Output Loop Test allows you to drive the frequency output at terminals 3 and 4 to a desired value. This capability allows you to check 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

Field Comm. 1, 4, 2, 3

LOI Key AUX. FUNCTION

This menu is used to configure the optional digital input and digital output parameters of the 8712 transmitter. Note that this configuration option is only active if the auxiliary output suite (option code AX) was ordered or licensed in the field.

DI/DO 1

Field Comm. 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

Field Comm. 1, 4, 2, 3, 1, 1

Configure channel 1 for either an Input or an Output. 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.

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DIO 1 Control

Field Comm. 1, 4, 2, 3, 1, 2

Displays the configuration for Channel 1 as either a discrete Input or Output.

Digital Input 1

Field Comm. 1, 4, 2, 3, 1, 3

Displays what digital input Channel 1 will be set to when the Control for Channel 1 is set to Input.

Digital Output 1

Field Comm. 1, 4, 2, 3, 1, 4

Displays what digital output Channel 1 will be set to when the Control for Channel 1 is set to Output.

DO 2

Field Comm. 1, 4, 2, 3, 2

Configure the digital output value here. This controls the digital output from the transmitter on terminals 16(+) and 20(-). There are four options that the digital output can be configured for:

• 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 tot al value

meets the conditions established for the Total Limit Alert.

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Flow Limit 1

Field Comm. 1, 4, 2, 3, 3

LOI Key AUX. FUNCTION

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Control 1

Field Comm. 1, 4, 2, 3, 3, 1

Turns the Flow Limit 1 HART Alert ON or OFF.

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

Mode 1

Field Comm. 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.

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

Field Comm. 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

Field Comm. 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

Field Comm. 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

Field Comm. 1, 4, 2, 3, 4

LOI Key AUX. FUNCTION

Control 2

Field Comm. 1, 4, 2, 3, 4, 1

Turns the Flow Limit 2 HART Alert ON or OFF.

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

Mode 2

Field Comm. 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.

High Limit 2

Field Comm. 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

Field Comm. 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

Field Comm. 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

Field Comm. 1, 4, 2, 3, 5

LOI Key AUX. FUNCTION

Total Control

Field Comm. 1, 4, 2, 3, 5, 1

4-26

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

Field Comm. 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.

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

Field Comm. 1, 4, 2, 3, 5, 3

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

Total Low Limit

Field Comm. 1, 4, 2, 3, 5, 4

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

Total Limit Hysteresis

Field Comm. 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

Field Comm. 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

Field Comm. 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

Field Comm. 1, 4, 2, 5

LOI Key AUX. FUNCTION

The totalizer setup menu allows for the viewing and configuration of the totalizer parameters.

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Totalizer Units

Field Comm. 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

Field Comm. 1, 4, 2, 5, 2

LOI Key TOTALIZE

Measured gross total provides the output read ing 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, you must change the line size. See “Line Size” on page 3-10 for details on how to change the line size.

Measured Net Total

Field Comm. 1, 4, 2, 5, 3

LOI Key TOTALIZE

Measured Reverse Total

Field Comm. 1, 4, 2, 5, 4

LOI Key TOTALIZE

Measured reverse total provides the output reading of the tot alizer. 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

Field Comm. 1, 4, 2, 5, 5

LOI Key START/STOP

Start totalizer starts the totalizer counting from its current value.

Stop Totalizer

Field Comm. 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 main te na nce operations.

Reset Totalizer

Field Comm. 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.

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Alarm Level

Field Comm. 1, 4, 2, 6

The alarm level allows you to drive the transmitter to preset values if an alarm occurs. There are two options:

• Rosemount Alarm and Saturation Values

• NAMUR-Complaint Alarm and Saturation Levels

Table 4-3. 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

Table 4-4. 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

Field Comm. 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 Field 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 defin ed in the HART protocol.

Variable Mapping

Field Comm. 1, 4, 2, 7, 1

V ariable mapping allows you to configure 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

Field Comm. 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

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Quaternary Variable

Field Comm. 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 of f of the HAR T 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

Field Comm. 1, 4, 2, 7, 2

Poll Address enables you to set the poll 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 8712 in the loop.

NOTE

The Rosemount 8712 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

Field Comm. 1, 4, 2, 7, 3

This is the number of preambles required by the 8712 for Field Communications.

Number of Response Preambles

Field Comm. 1, 4, 2, 7, 4

This is the number of preambles sent by the 8712 in response to any host request.

Burst Mode

Field Comm. 1, 4, 2, 7, 5

Burst Mode Configuration The Rosemount 8712 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 you to select the variables to broadcast while in the burst mode and to select the burst mode option.

4-30

The Burst Mode variable enables you to set the Burst Mode to the needs of your application. Options for the Burst Mode setting include:

• Off–Tur ns of f the Burst Mo de so that no dat a are broa dcast on the loop.

• On–Turns Burst Mode on so that the data selected under Burst Option

are broadcast over the loop.

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Additional command options may appear that are reserved and do not apply to the Rosemount 8712.

Burst Option

Field Comm. 1, 4, 2, 7, 6

Burst option enables you to select 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

Field Comm. 1, 4, 3

configure the LOI outputs of the transmitter.

Flowrate Display

Field Comm. 1, 4, 3, 2

This allows you to configure the items that the LOI will display when at the flowrate 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

Field Comm. 1, 4, 3, 3

This allows you to configure 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 8712 contains several advanced functions that can be used to stabilize

Field Comm. 1, 4, 4

LOI Key AUX. FUNCTION

erratic outputs caused by process noise. The signal processing menu contains this functionality.

Operating Mode

Field Comm. 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. T urning Signal Processing off or changing the coil drive frequency to 5 Hz will automatically change the Operating Mode from filter mode to normal mode.

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Manually Configure Digital Signal Processing (DSP)

Field Comm. 1, 4, 4, 2

The 8712 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

Field Comm. 1, 4, 4, 2, 1

When ON is selected, the Rosemount 8712 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 pa rameters that make up signal processing (number of samples, maximum percent limit, and time limit) are described below.

Samples

Field Comm. 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

Field Comm. 1, 4, 4, 2, 3

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.

V alues within the limit are accepted while values out side the limit are analyzed to determine if they are a noise spike or an actual flow change.

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Time Limit

Field Comm. 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.

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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 8712 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

Field Comm. 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

Field Comm. 1, 4, 4, 4

LOI Key AUX. FUNCTION

Low flow cutoff allows you to specify 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

Field Comm. 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.

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Universal Auto T rim The universal auto trim function enables the Rosemount 8712 to calibrate

Field Comm. 1, 4, 5

LOI Key AUX. FUNCTION

sensors that were not calibrated at the Rosemount factory. The function is activated as one step in a procedure known as in-process calibration. If your Rosemount sensor has a 16-digit calibration number, in-process calibration is not required. If it does not, or if your sensor is made by another manufactu rer, complete the following steps for in-process calibration.

1. Determine the flow rate of the process fluid in the sensor.

NOTE

2. Complete the universal auto trim function.

3. When the routine is completed, the sensor is ready for use.

Device Info Information variables are used for identification of Flowmeters in the field and

Field Comm. 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

Field Comm. 1, 4, 6, 1

LOI Key XMTR INFO

Manufacturer is an informational variable provided by the factory. For the Rosemount 8712, the Manufacturer is Rosemount.

Tag

Field Comm. 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

Field Comm. 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

Field Comm. 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.

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Date

Field Comm. 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.

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Device ID

Field Comm. 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

Field Comm. 1, 4, 6, 7

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.

Sensor Tag

Field Comm. 1, 4, 6, 8

Sensor Tag is the quickest and shortest way of identifying and distingu ish ing between sensors. Sensors can be tagged according to the requirements of your application. The tag may be up to eight characters long.

Write Protect

Field Comm. 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

Field Comm. 1, 4, 6, 10

Revisions numbers are fixed informational variables that provide the revision number for different elements of your Field Communicator and Rosemount

8712. 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

Field Comm. 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

Field Comm. 1, 4, 6, 10, 2

Field device revision number – Designates the revision for the Rosemount 8712 specific command identification for HART compatibility.

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Software Revision Number

Field Comm. 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

Field Comm. 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.

Construction Materials

Field Comm. 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

Field Comm. 1, 4, 6, 11, 1

LOI Key XMTR INFO

Flange type enables you to select the flange type for your magnetic transmitter system. This variable only needs to be changed if you have changed your sensor. Options for this value are:

• 150# ANSI

• 300# ANSI

• 600# ANSI

• 900# ANSI

• 1500# ANSI

• 2500# ANSI

•PN 10

•PN 16

•PN 25

•PN 40

•PN 64

• Wafer

•Other

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Flange Material

Field Comm. 1, 4, 6, 11, 2

LOI Key XMTR INFO

Flange material enables you to select the flange material for your magnetic transmitter system. This variable only needs to be changed if you have changed your sensor. Options for this value are:

• Carbon Steel

• 304 Stainless Steel

• 316 Stainless Steel

• Wafer

•Other

Electrode Type

Field Comm. 1, 4, 6, 11, 3

LOI Key XMTR INFO

Electrode type enables you to select the electrode type for your magnetic transmitter system. This variable only needs to be changed if you have replaced electrodes or if you have replaced your sensor. Options for this value are:

• Standard

• Std & Ground

• Bullet

•Other

Electrode Material

Field Comm. 1, 4, 6, 11, 4

LOI Key XMTR INFO

Electrode Material enables you to select the electrode material for your magnetic transmitter system. This variable only needs to be changed if you have replaced electrodes or if you have replaced your sensor. Options for this value are:

• 316L SST

• Nickel Alloy 276 (UNS N10276)

•Tantalum

• Titanium

• 80% Platinum – 20% Iridium

• Alloy 20

•Other

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Liner Material

Field Comm. 1, 4, 6, 11, 5

LOI Key XMTR INFO

Liner material enables you to select the liner material for the attached sen sor. This variable only needs to be changed if you have replaced your sensor. Options for this value are:

• PTFE

• ETFE

•PFA

• Polyurethane

• Linatex

• Natural Rubber

• Neoprene

•Other

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Reference Manual

1. Device

Setup

2. PV

3. PV Loop

Current

4. PV LRV

5. PV URV

1. PV

2. PV % Range

3. PV Loop Current

4. Totalizer Setup

5. Pulse Output

1. Totalizer Units

2. Gross Total

3. Net Total

4. Reverse Total

5. Start Totalizer

6. Stop Totalizer

7. Reset Totalize

1. Diagnostic Controls

2. Basic Diagnostics

3. Advanced Diagnostics

4. Diagnostic Variables

5. Trims

6. View Status

1. Process

Variables 2. Diagnostics 3. Basic

Setup 4. Detailed

Setup 5. Review

1. Self Test

2. AO Loop Test

3. Pulse Output Loop Test

4. Tune Empty Pipe

5. Electronics Temp

6. Flow Limit 1

7. Flow Limit 2

8. Total Limi

1. EP Value

2. Electronics Temp

3. Line Noise

4. 5 Hz SNR

5. 37 Hz SNR

6. Signal Power

7. 8714i Results

1. PV Units

2. Special Units

1. Volume Unit

2. Base Volume Unit

3. Conversion Number

4. Base Time Unit

5. Flow Rate Unit

1. Analog Output

2. Pulse Output

3. Digital I/O

4. Reverse Flow

5. Totalizer Setup

6. Alarm Levels

7. HART Out

1. PV URV

2. PV LRV

3. PV Loop Current

4. PV Alarm Type

5. AO Loop Test

6. D/A Trim

7. Scaled D/A Trim

8. Alarm Level

1. Pulse Scaling

2. Pulse Width

3. Pulse Output Loop Test

1. Totalizer Units

2. Gross Total

3. Net Total

4. Reverse Total

5. Start Totalizer

6. Stop Totalizer

7. Reset Totalize

1. Variable Mapping

2. Poll Address

3. # of Req Preams

4. # of Resp Preams

5. Burst Mode

6. Burst Option

1. Operating Mode

2. Man Config DSP

3. Coil Drive Freq

4. Low Flow Cutoff

5. PV Damping

1. Coil Drive Freq

2. Density Value

3. PV USL

4. PV LSL

5. PV Min S

1. Additional Params

2. Configure Output

3. Signal Processing

4. Universal Trim

5. Device Info

1. DI/DO 1

2. DO 2

3. Flow Limit 1

4. Flow Limit 2

5. Total Limit

6. Diagnostic Status Aler

1. Tag

2. Flow Units

3. Line Size

4. PV URV

5. PV LRV

6. Calibration Number

7. PV Dam

1. Flange Type

2. Flange Material

3. Electrode Type

4. Electrode Material

5. Liner Material

1. Manufacturer

2. Tag

3. Descriptor

4. Message

5. Date

6. Device ID

7. PV Sensor S/N

8. Flowtube Tag

9. Write Protect

- Revision No.

- Construction Materials

1. Universal Rev

2. Transmitter Rev

3. Software Rev

4. Final Assembly #

1. Status

2. Samples

3. % Limit

4. Time Limit

1. D/A Trim

2. Scaled D/A Trim

3. Digital Trim

4. Auto Zero

5. Universal Trim

1. 8714i Cal Verification

2. Licensing

1. Run 8714i Verification

2. 8714i Results

3. Flowtube Signature

4. Set Pass/Fail Criteria

5. Measurements

1. Signature Values

2. Re-Signature Meter

3. Recall Last Saved Values

1. License Status

2. License Key

1. Device ID

2. License Key

1. PV is

2. SV is

3. TV is

4. QV is

1. Coil Resistance

2. Coil Signature

3. Electrode Resistance

1. No Flow Limit

2. Flowing, Limit

3. Empty Pipe Limit

1. Test Condition

2. Test Criteria

3. 8714i Test Result

4. Simulated Velocity

5. Actual Velocity

6. Velocity Deviation

7. Xmtr Cal Test Result

8. Tube Cal Deviation

9. Tube Cal Test Result

- Coil Circuit Test Result

- Electrode Circuit Test

Resul

1. Test Condition

2. Test Criteria

3. 8714i Test Result

4. Simulated Velocity

5. Actual Velocity

6. Velocity Deviation

7. Xmtr Cal Test Result

8. Tube Cal Deviation

9. Tube Cal Test Result

- Coil Circuit Test Result

- Electrode Circuit Test

Resul

1. Total Control

2. Total Mode

3. Total High Limit

4. Total Low Limit

5. Total Limit Hysteresis

1. Control 2

2. Mode 2

3. High Limit 2

4. Low Limit 2

5. Flow Limit Hysteresis

1. Control 1

2. Mode 1

3. High Limit 1

4. Low Limit 1

5. Flow Limit Hysteresis

1. Configure I/O 1

2. DIO 1 Control

3. Digital Input 1

4. Digital Output 1

1. Coil Resistance

2. Coil Signature

3. Electrode Resistance

1. Total Control

2. Total Mode

3. Total High Limit

4. Total Low Limit

5. Total Limit Hysteresis

1. Control 2

2. Mode 2

3. High Limit 2

4. Low Limit 2

5. Flow Limit Hysteresis

1. Control 1

2. Mode 1

3. High Limit 1

4. Low Limit 1

5. Flow Limit Hysteresis

Empty Pipe On/Off

Process Noise On//Off

Grounding/Wiring On/Off

Electronics Temp On/Off

Process Noise Detect On/Off

Line Noise Detection On//Off

Digital I/O On/Off

8714i On/Off

Reverse Flow

Zero Flow

Transmitter Fault

Empty Pipe

Flow Limit 1

Flow Limit 2

Diag Status Alert

Totalizer Limi

Electronics Failure On/Off

Coil Open Circuit On/Off

Empty Pipe On/Off

Reverse Flow On/Off

Ground/Wiring Fault On/Off

High Process Noise On/Off

Elect Tem

Out of Ra .. On/Off

1. EP Value

2. EP Trig. Level

3. EP Counts

00809-0100-4664, Rev BA January 2010

Figure 4-2. Field Communicator Menu Tree for the Rosemount 8712

Rosemount 8712

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Figure 4-3. HART Fast Key

Function HART Fast Keys

Process Variables (PV) 1,1

Primary Variable Value 1,1,1 Primary Variable % 1,1,2 PV Loop Current 1,1,3 Totalizer Set-Up 1,1,4 Totalizer Units 1,1,4,1 Gross Total 1,1,4,2 Net Total 1,1,4,3 Reverse Total 1,1,4,4 Start Totalizer 1,1,4,5 Stop Totalizer 1,1,4,6 Reset Totalizer 1,1,4,7 Pulse Output 1,1,5

Diagnostics 1,2

Diagnostic Controls 1,2,1 Basic Diagnostics 1,2,2 Self Test 1,2,2,1 AO Loop Test 1,2,2,2 Pulse Output Loop Test 1,2,2,3 Tune Empty Pipe 1,2,2,4 EP Value 1,2,2,4,1 EP Trigger Level 1,2,2,4,2 EP Counts 1,2,2,4,3 Electronics Temp 1,2,2,5 Flow Limit 1 1, 2,2,6 Control 1 1,2,2,6,1 Mode 1 1,2,2,6,2 High Limit 1 1,2,2,6,3 Low Limit 1 1,2,2,6,4 Flow Limit Hysteresis 1,2,2,6,5 Flow Limit 2 1,2,2,7 Control 2 1,2,2,7,1 Mode 2 1,2,2,7,2 High Limit 2 1,2,2,7,3 Low Limit 2 1,2,2,7,4 Flow Limit Hysteresis 1,2,2,7,5 Total Limit 1,2,2,8 Total Control 1,2,2,8,1 Total Mode 1,2,2,8,2 Total High Limit 1,2,2,8,3 Total Low Limit 1,2,2,8,4 Total Limit Hysteresis 1,2,2,8,5 Advanced Diagnostics 1,2,3 8714i Meter Verification 1,2,3,1 Run 8714i 1,2,3,1,1 8714i Results 1,2,3,1,2 Test Condition 1,2,3,1,2,1 Test Criteria 1,2,3,1,2,2 8714i Test Result 1,2,3,1,2,3 Simulated Velocity 1,2,3,1,2,4 Actual Velocity 1,2,3,1,2,5 Velocity Deviation 1,2,3,1,2,6 Xmtr Cal Test Result 1,2,3,1,2,7 Sensor Cal Deviation 1,2,3,1,2,8

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Rosemount 8712

Function HART Fast Keys

Sensor Cal Test Result 1,2,3,1,2,9 Coil Circuit Test Result 1,2,3,1,2,x Electrode Circuit Test Result 1,2,3,1,2,x Sensor Signature 1,2,3,1,3 Signature Values 1,2,3,1,3,1 Coil Resistance 1,2,3,1,3,1,1 Coil Signature 1,2,3,1,3,1,2 Electrode Resistance 1,2,3,1,3,1,3 Re-Signature Meter 1,2,3,1,3,2 Recall Last Saved Values 1,2,3,1,3,3 Set Pass/Fail Criteria 1,2,3,1,4 No Flow Limit 1,2,3,1,4,1 Flowing Limit 1,2,3,1,4,2 Empty Pipe Limit 1,2,3,1,4,3 Measurements 1,2,3,1,5 Coil Resistance 1,2,3,1,5,1 Coil Signature 1,2,3,1,5,2 Electrode Resistance 1,2,3,1,5,3 Licensing 1,2,3,2 License Status 1,2,3,2,1 License Key 1,2,3,2,2 Device ID 1,2,3,2,2,1 License Key 1,2,3,2,2,2 Diagnostic Variables 1,2,4 EP Value 1,2,4,1 Electronics Temp 1,2,4,2 Line Noise 1,2,4,3 5 Hz Signal to Noise Ratio (SNR) 1,2,4,4 37 Hz SNR 1,2,4,5 Signal Power 1,2,4,6 8714i results 1,2,4,7 Test Condition 1,2,4,7,1 Test Criteria 1,2,4,7,2 8714i Test Result 1,2,4,7,3 Simulated Velocity 1,2,4,7,4 Actual Velocity 1,2,4,7,5 Velocity Deviation 1,2,4,7,6 Xmtr Cal Test Result 1,2,4,7,7 Sensor Cal Deviation 1,2,4,7,8 Sensor Cal Test Result 1,2,4,7,9 Coil Circuit Test Result 1,2,4,7,x Electrode Circuit Test Result 1,2,4,7,x Trims 1,2,5 D/A Trim 1,2,5,1 Scaled D/A Trim 1,2,5,2 Digital Trim 1,2,5,3 Auto Zero 1,2,5,4 Universal Trim 1,2,5,5 View Status 1,2,6

Basic Setup 1,3

Tag 1,3,1 Flow Units 1,3,2 PV Units 1,3,2,1 Special Units 1,3,2,2 Volume Unit 1,3,2,2,1

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Function HART Fast Keys

Base Volume Unit 1,3,2,2,2 Conversion Number 1,3,2,2,3 Base Time Unit 1,3,2,2,4 Flow Rate Unit 1,3,2,2,5 Line Size 1,3,3 PV URV 1,3,4 PV LRV 1,3,5 Calibration Number 1,3,6 PV Damping 1,3,7

Detailed Setup 1,4

Additional Params 1,4,1 Coil Drive Freq 1,4,1,1 Density Value 1,4,1,2 PV USL 1,4,1,3 PV LSL 1,4,1,4 PV Min Span 1,4,1,5 Configure Output 1,4,2 Analog Output 1,4,2,1 PV URV 1,4,2,1,1 PV LRV 1,4,2,1,2 PV Loop Current 1,4,2,1,3 PV Alarm Type 1,4,2,1,4 AO Loop Test 1,4,2,1,5 D/A Trim 1,4,2,1,6 Scaled D/A Trim 1,4,2,1,7 Alarm Level 1,4,2,1,8 Pulse Output 1,4,2,2 Pulse Scaling 1,4,2,2,1 Pulse Width 1,4,2,2,2 Pulse Output Loop Test 1,4,2,2,3 Digital I/O 1,4,2,3 DI/DO 1 1,4,2,3,1 Configure I/O 1 1,4,2,3,1,1 DIO 1 Control 1,4,2,3,1,2 Digital Input 1 1,4,2,3,1,3 Digital Output 1 1,4,2,3,1,4 DO 2 1,4,2,3,2 Flow Limit 1 1,4,2,3,3 Control 1 1,4,2,3,3,1 Mode 1 1,4,2,3,3,2 High Limit 1 1,4,2,3,3,3 Low Limit 1 1,4,2,3,3,4 Flow Limit Hysteresis 1,4,2,3,3,5 Flow Limit 2 1,4,2,3,4 Control 2 1,4,2,3,4,1 Mode 2 1,4,2,3,4,2 High Limit 2 1,4,2,3,4,3 Low Limit 2 1,4,2,3,4,4 Flow Limit Hysteresis 1,4,2,3,4,5 Total Limit 1,4,2,3,5 Total Control 1,4,2,3,5,1 Total Mode 1,4,2,3,5,2 Total High Limit 1,4,2,3,5,3 Total Low Limit 1,4,2,3,5,4 Total Limit Hysteresis 1,4,2,3,5,5

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Rosemount 8712

Function HART Fast Keys

Diagnostic Status Alert 1,4,2,3,6 Reverse Flow 1,4,2,4 Totalizer Setup 1,4,2,5 Totalizer Units 1,4,2,5,1 Gross Total 1,4,2,5,2 Net Total 1,4,2,5,5 Reverse Total 1,4,2,5,4 Start Totalizer 1,4,2,5,5 Stop Totalizer 1,4,2,5,6 Reset Totalizer 1,4,2,5,7 Alarm Level 1,4,2,6 HART Output 1,4,2,7 Variable Mapping 1,4,2,7,1 TV is 1,4,2,7,1,1 QV is 1,4,2,7,1,2 Poll Address 1,4,2,7,2 # of Req Preams 1,4,2,7,3 # Resp Preams 1,4,2,7,4 Burst Mode 1,4,2,7,5 Burst Option 1,4,2,7,6 Signal Processing 1,4,3 Operating Mode 1,4,3,1 Man Config DSP 1,4,3,2 Status 1,4,3,2,1 Samples 1,4,3,2,2 % Limit 1,4,3,2,3 Time Limit 1,4,3,2,4 Coil Drive Freq 1,4,3,3 Low Flow Cutoff 1,4,3,4 PV Damping 1,4,3,5 Universal Trim 1,4,4 Device Info 1,4,5 Manufacturer 1,4,5,1 Tag 1,4,5,2 Descriptor 1,4,5,3 Message 1,4,5,4 Date 1,4,5,5 Device ID 1,4,5,6 PV Sensor S/N 1,4,5,7 PV Sensor Tag 1,4,5,8 Write Protect 1,4,5,9 Revision No. 1,4,5,x Universal Rev 1,4,5,x,1 Transmitter Rev 1,4,5,x,2 Software Rev 1,4,5,x,3 Final Assembly # 1,4,5,x,4 Construction Materials 1,4,5,x Flange Type 1,4,5,x,1 Flange Material 1,4,5,x,2 Electrode Type 1,4,5,x,3 Electrode Material 1,4,5,x,4 Liner Material 1,4,5,x,5

Review 1,5

4-43

Rosemount 8712

Figure 4-4. Local Operator Interface (LOI) Data Entry Keys for the Rosemount 8712

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

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

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

Units Specifies the desired units:

• M oves 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 3-3 on page 3-9

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Rosemount 8712

Auxiliary Functions Function

Run 8714i Operating Mode Coil Pulse Mode Flow rate Display Totalizer Display Totalizer Units Configure Signal Processing Special Units Process Density DI/DO 1 Config Digital Output 2 Flow Limit 1 Flow Limit 2 Totalizer Limit Diagnostic Status Alert Reverse Flow Enable Licensed Options 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

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

Options 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 unit s , conversion, time base, rate unit s Required for units of mass flow Configure Auxiliary Channel 1 Configure Auxiliary Channel 2 Configure Flow Limit 1 Alert Configure Flow Limit 2 Alert Configure Totalizer Limit Alert Configure Diagnostic Status Alert On/Off Displays Licensed Options 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

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Section 5 Sensor Installation

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 5-1

Sensor Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-3

Sensor Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 5-4

Installation (Flanged Sensor) . . . . . . . . . . . . . . . . . . . . . . page 5-7

Installation (Wafer Sensor) . . . . . . . . . . . . . . . . . . . . . . . .page 5-10

Installation (Sanitary Sensor) . . . . . . . . . . . . . . . . . . . . . . page 5-12

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-12

Process Leak Protection (Optional) . . . . . . . . . . . . . . . . . page 5-15

This section covers the steps required to physically install the magnetic sensor. For electrical connections an d cabling see Section 2: "Installation". 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 oper ation in thi s section.

Rosemount 8712

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

Do not connect a Rosemount 8712 to a non-Rosemount sensor that is located in an explosive atmosphere.

www.rosemount.com

Rosemount 8712

Reference Manual

00809-0100-4664, Rev BA

January 2010

Explosions could result in death or serious injury: Installation of this transmitter in an explosive environment must be in accordance with the

Before connecting a HART-based 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.

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

5-2

Reference Manual

See ”Safety Messages” on pages 5-1 and 5-2 for complete warning information.

½- through 4-Inch

Sensors

6-Inch and Larger

Sensors

00809-0100-4664, Rev BA January 2010

Rosemount 8712

SENSOR HANDLING Handle all parts carefully to prevent damage. Whenever possible, transport

the system to the installation site in the original shipping containers. PTFE-lined sensors are shipped with end covers that protect it from both mechanical damage and normal unrestrained distortion. Remove the end covers just before installation.

Flanged 6- through 36-inch sensors come with a lifting lug on each flange. The lifting lugs make the sensor easier to handle when it is transported and lowered into place at the installation site.

Flanged ½- to 4-inch sensors do not have lugs. They must be supported with a lifting sling on each side of the housing.

Figure 5-1 shows sensors correctly supported for handling and installation. Notice the plywood end pieces are still in place to protect the sensor liner during transportation.

Figure 5-1. Rosemount 8705 Sensor Support for Handling

5-3

Reference Manual

FLOW

5 Pipe Diameters

2 Pipe Diameters

FLOW

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Rosemount 8712

January 2010

SENSOR MOUNTING Physical mounting of a sensor is similar to installing a typical section of pipe.

Conventional tools, equipment, and accessories (bolts, gaskets, and grounding hardware) are required.

Upstream/Downstream Piping

Figure 5-2. Upstream and Downstream Straight Pipe Diameters

To ensure specification accuracy over widely varying process conditions, install the sensor a minimum of five straight pipe diameters upstream and two pipe diameters downstream from the electrode plane (see Figure 5-2).

Sensor Orientation The sensor should be installed in a position that ensures the sensor remains

full during operation. Figures 5-3, 5-4, and 5-5 show the proper sensor orientation for the most common installations. The following orientations ensure that the electrodes are in the optimum plane to min imize the effects of entrapped gas.

Vertical installation allows upward process fluid flow and is generally preferred. Upward flow keeps the cross-sectional area full, regardless of flow rate. Orientation of the electrode plane is unimportant in vertical installations. As illustrated in Figures 5-3 and 5-4, avoid downward flows where back pressure does not ensure that the se nsor remains full at all times.

Figure 5-3. Vertical Sensor Orientation

Installations with reduced straight runs from 0 to five pipe diameters are possible. In reduced straight pipe run installations, performance will shift to as much as 0.5% of rate. Reported flow rates will still be highly repeatable.

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Reference Manual

FLOW

00809-0100-4664, Rev BA January 2010

Figure 5-4. Incline or Decline Orientation

Rosemount 8712

Horizontal installation should be restricted to low piping sections that are normally full. Orient the electrode plane to within 45 degrees of horizontal in horizontal installations. A deviation of more than 45 degrees of horizontal would place an electrode at or near the top of the sensor thereby making it more susceptible to insulation by air or entrapped gas at the top of the sensor.

Figure 5-5. Horizontal Sensor Orientation

The electrodes in the Rosemount 8711 are properly oriented when the top of the sensor is either vertical or horizontal, as shown in Figure 5-6. Avoid any mounting orientation that positions the top of the sensor at 45 degrees from the vertical or horizontal position.

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Reference Manual

45° Electrode Plane

FLOW

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Rosemount 8712

Figure 5-6. Rosemount 8711 Mounting Position

January 2010

Flow Direction The sensor should be mounted so that the FORWARD end of the flow arrow,

shown on the sensor identification tag, points in the direction of flow through the tube (see Figure 5-7).

Figure 5-7. Flow Direction

5-6

Reference Manual

See ”Safety Messages” on pages 5-1 and 5-2 for complete warning information.

Gasket (Supplied by user)

Grounding Ring

Gasket (Supplied by user)

00809-0100-4664, Rev BA January 2010

Rosemount 8712

INSTALLATION (FLANGED SENSOR)

The following section should be used as a guide in the installation of the flange-type Rosemount 8705 and Rosemount 8707 High-Signal Sensors. Refer to page 5-10 for installation of the wafer-type Rosemount 8711 Sensor.

Gaskets The sensor requires a gasket at each of its connections to adjacent devices or

piping. The gasket material selected must be compatible with the process fluid and operating conditions. Metallic or spiral-wound gaskets can damage the liner. If the gaskets will be removed frequently, protect the liner ends. All other applications (including sensors with lining protectors or a grounding electrode) require only one gasket on each end connection, as shown in Figure 5-8. If grounding rings are used, gaskets are required on each side of the grounding ring, as shown in Figure 5-9.

Figure 5-8. Gasket Placement

Figure 5-9. Gasket Placement with Non-attached Grounding Rings

Flange Bolts Suggested torque values by sensor line size and liner type are listed in Table

5-1 on page 5-8 for ASME B16.5 (ANSI) flanges and Table 5-2 and Table 5-3 for DIN flanges. Consult the factory for other flange ratings. Tighten flange bolts in the incremental sequence as shown in Figure 5-10 . See Table 5-1 and Table 5-2 for bolt sizes and hole diameters.

5-7

Rosemount 8712

See ”Safety Messages” on pages 5-1 and 5-2 for complete warning information.

Reference Manual

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January 2010

NOTE

Do not bolt one side at a time. Tighten each side simultaneously. Example:

1. Snug left

2. Snug right

3. Tighten left

4. Tighten right Do not snug and tighten the upstream side and then snug and tighten the downstream side. Failure to alternate between the upstream a nd downstream flanges when tightening bolts may result in liner damage.

Always check for leaks at the flanges after tightening the flange bolt s. Failure to use the correct flange bolt tightening methods can result in severe damage. All sensors require a second torquing 24 hours after initial flange bolt tightening.

Table 5-1. Flange Bolt Torque Specifications for Rosemount 8705 and 8707 High-Signal Sensors

PTFE/ETFE liner Polyurethane lin er

Class 150

Size Code Line Size

005 010 1 inch (25 mm) 8 12 — — 015 1 020 2 inch (50 mm) 19 17 14 11 030 3 inch (80 mm) 34 35 23 23 040 4 inch (100 mm) 26 50 17 32 060 6 inch (150mm) 45 50 30 37 080 8 inch (200 mm) 60 82 42 55 100 10 inch (250 mm) 55 80 40 70 120 12 inch (300 mm) 65 125 55 105 140 14 inch (350 mm) 85 110 70 95 160 16 inch (400 mm) 85 160 65 140 180 18 inch (450 mm) 120 170 95 150 200 20 inch (500 mm) 110 175 90 150 240 24 inch (600 mm) 165 280 140 250 300 30 inch (750 mm) 195 415 165 375 360 36 inch (900 mm) 280 575 245 525

/2-inch (15 mm) 8 8 — —

/2 inch (40 mm) 13 25 7 18

(pound-feet)

Class 300

(pound-feet)

Class 150

(pound-feet)

Class 300

(pound-feet)

5-8

Reference Manual

4-Bolt

8-Bolt

12-Bolt

14-Bolt

20-Bolt

Torque the flange bolts

in increments according to

the above numerical sequence.

00809-0100-4664, Rev BA January 2010

Table 5-2. Flange Bolt Torque and Bolt Load Specifications for Rosemount 8705

PTFE/ETFE liner

Size

Code

005 010 1 inch (25 mm) 13 6983 13 6983 13 6983 13 8816 015 1 020 2 inch (50 mm) 25 10420 25 10420 25 10420 25 14457 030 3 inch (80 mm) 14 5935 14 5935 18 7612 18 12264 040 4 inch (100 mm) 17 7038 17 7038 30 9944 30 16021 060 6 inch (150mm) 23 7522 32 10587 60 16571 60 26698 080 8 inch (200 mm) 35 11516 35 11694 66 18304 66 36263 100 10 inch (250 mm) 31 10406 59 16506 105 25835 105 48041 120 12 inch (300 mm) 43 14439 82 22903 109 26886 109 51614 140 14 inch (350 mm) 42 13927 80 22091 156 34578 156 73825 160 16 inch (400 mm) 65 18189 117 28851 224 45158 224 99501 180 18 inch (450 mm) 56 15431 99 24477 — — — 67953 200 20 inch (500 mm) 66 18342 131 29094 225 45538 225 73367 240 24 inch (600 mm) 104 25754 202 40850 345 63940 345 103014

Line Size (Newton-meter) (Newton) (Newton-meter) (Newton) (Newton-meter) (Newton) (Newton-meter) (Newton)

/2-inch (15 mm) 7 3209 7 3809 7 3809 7 4173

/2 inch (40 mm) 24 9983 24 9983 24 9983 24 13010

PN10 PN 16 PN 25 PN 40

Rosemount 8712

Figure 5-10. Flange Bolt Torquing Sequence

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Rosemount 8712

Table 5-3. Flange Bolt Torque and Bolt Load Specifi ca tions for Rosemount 8705

Polyurethane Liner

Size

Code

005 010 1 inch (25 mm) 2 1191 3 1890 5 2958 10 5555 015 1 020 2 inch (50 mm) 6 2535 10 4021 15 6294 26 10831 030 3 inch (80 mm) 5 2246 9 3563 13 5577 24 19998 040 4 inch (100 mm) 7 3033 12 4812 23 7531 35 11665 060 6 inch (150mm) 16 5311 25 8425 47 13186 75 20829 080 8 inch (200 mm) 27 8971 28 9487 53 14849 100 24687 100 10 inch (250 mm) 26 8637 49 13700 87 21443 155 34547 120 12 inch (300 mm) 36 12117 69 19220 91 22563 165 36660 140 14 inch (350 mm) 35 11693 67 18547 131 29030 235 47466 160 16 inch (400 mm) 55 15393 99 24417 189 38218 335 62026 200 20 inch (500 mm) 58 15989 114 25361 197 39696 375 64091 240 24 inch (600 mm) 92 22699 178 36006 304 56357 615 91094

Line Size

/2-inch (15 mm) 1 521 1 826 2 1293 6 3333

/2 inch (40 mm) 5 1960 7 3109 12 4867 20 8332

(Newton-meter) (Newton) (Newton-meter) (Newton) (Newton-meter) (Newton) (Newton-meter) (Newton)

PN 10 PN 16 PN 25 PN 40

January 2010

INSTALLATION (WAFER SENSOR)

The following section should be used as a guide in the installation of the Rosemount 8711 Sensor. Refer to page 5-7 for installation of the flange-type Rosemount 8705 and 8707 High-Signal sensor.

Gaskets The sensor requires a gasket at each of its connections to adjacent devices or

Alignment and Bolting

1. On 11/2 - through 8-inch (40 through 200 mm) line sizes, place centering rings over each end of the sensor. The smaller line sizes,

0.15- through 1-inch (4 through 25 mm), do not require centering rings.

2. Insert studs for the bottom side of the sensor between the pipe flanges. Stud specifications are listed in Table 5-4. Using carbon

steel bolts on smaller line sizes, 0.15- through 1-inch (4 through 25 mm), rather than the required stainless steel bolts, will degrade performance.

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Reference Manual

Customer-supplied

Gasket

FLOW

Installation, Studs Nuts and Washers

Centering Rings

See ”Safety Messages” on pages 5-1 and 5-2 for complete warning information.

00809-0100-4664, Rev BA January 2010

Rosemount 8712

Table 5-4. Stud Specifications

Nominal Sensor Size Stud Specifications

0.15 – 1 inch (4 – 25 mm) 316 SST ASTM A193, Grade B8M

Class 1 threaded mounted studs

11/2 – 8 inch (40 – 200 mm) CS, ASTM A193, Grade B7, threaded mounting studs

3. Place the sensor between the flanges. Make sure that the centering rings are properly placed in the studs. The studs should be aligned with the markings on the rings that correspond to the flange you are using.

4. Insert the remaining studs, washers, and nuts.

5. Tighten to the torque specifications shown in Table 5-5. Do not overtighten the bolts or the liner may be damaged.

NOTE

On the 4- and 6- inch PN 10-16, insert the sensor with rings first and then insert the studs. The slots on this ring scen ario are located on the inside of the ring.

Figure 5-11. Gasket Placement with Centering Rings

Flange Bolts Sensor sizes and torque values for both Class 1 50 and Class 300 flan ges are

listed in Table 5-5. Tighten flange bolts in the incremental sequence, shown in Figure 5-10.

NOTE

Do not bolt one side at a time. Tighten each side simultaneously. Example:

1. Snug left

2. Snug right

3. Tighten left

Always check for leaks at the flanges after tightening the flange bolts. All sensors require a second torquing 24 hours after initial flange bolt tightening.

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User supplied clamp

User supplied gasket

00809-0100-4664, Rev BA

Rosemount 8712

January 2010

Table 5-5. Flange bolt Torque Specifications of Rosemount 8711 Sensors

Size Code Line Size Pound-feet Newton-meter

15F 0.15 inch (4 mm) 5 6.8 30F 0.30 inch (8 mm) 5 6.8

005 010 1 inch (25 mm) 10 13.6 015 1 020 2 inch (50 mm) 25 34.1 030 3 inch (80 mm) 40 54.6 040 4 inch (100 mm) 30 40.1 060 6 inch (150 mm) 50 68.2 080 8 inch (200 mm) 70 81.9

/2-inch (15 mm) 5 6.8

/2 inch (40 mm) 15 20.5

INSTALLATION (SANITARY SENSOR)

Gaskets The sensor requires a gasket at each of its connections to adjacent devices or

piping. The gasket material selected must be compatible with the process fluid and operating conditions. Gaskets are su pplied with all Rosemount 8 721 Sanitary sensors except when the process connection is an IDF sanitary screw type.

Alignment and Bolting Standard plant practices should be followed when installing a magmeter with

Figure 5-12. Rosemount 8721 Sanitary Installation

sanitary fittings. Unique torque values and bolting technique s ar e no t required.

GROUNDING Process grounding the sensor is one the most important details of sensor

installation. Proper process grounding ensures that the transmitter amplifier is referenced to the process. This creates the lowest noise environment for the transmitter to make a stable reading. Use Table 5-6 to determine which grounding option to follow for proper installation.

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00809-0100-4664, Rev BA January 2010

NOTE

Consult factory for installations requiring cathodic protection or situations where there are high currents or high potential in the process.

The sensor case should always be earth grounded in accordance with national and local electrical codes. Failure to do so may impair the protection provided by the equipment. The most effective grounding method is direct connection from the sensor to earth ground with minimal impedance.

The Internal Ground Connection (Protective Ground Connection) located in side the junction box is the Internal Ground Connection screw. This screw is identified by the ground symbol:

Table 5-6. Grounding Installation

Grounding Options

Type of Pipe No Grounding Options Grounding Rings Grounding Electrodes Lining Protectors

Conductive Unlined Pipe See Figure 5-13 Not Required Not Required See Figure 5-14

Conductive Lined Pipe Insufficient Grounding See Figure 5-14 See Figure 5-13 See Figure 5-14

Non-Conductive Pipe Insufficient Grounding See Figure 5-15 See Figure 5-16 See Figure 5-15

Rosemount 8712

Figure 5-13. No Grounding Options or Grounding Electrode in Lined Pipe

5-13

Rosemount 8712

Grounding Rings or

Lining Protectors

Grounding Rings or

Lining Protectors

Figure 5-14. Grounding with Grounding Rings or Lining Protectors

Reference Manual

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January 2010

Figure 5-15. Grounding with Grounding Rings or Lining Protectors

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Figure 5-16. Grounding with Grounding Electrodes

Rosemount 8712

PROCESS LEAK PROTECTION (OPTIONAL)

Standard Housing Configuration

The Rosemount 8705 and 8707 High-Signal Sensor housing is fabricated from carbon steel to perform two separate functions. First, it provides shielding for the sensor magnetics so that external disturbances cannot interfere with the magnetic field and thus affect the flow mea su re m en t. Second, it provides the physical protection to the coils and other internal components from contamination and physical damage that might occur in an industrial environment. The housing is completely welded and gasket-free.

The three housing configurations are identified by the W0, W1, or W3 in the model number option code when ordering. Below are brief description s of each housing configuration, which are followed by a more detailed overview.

• Code W0 — sealed, welded coil housing (standard configuration)

• Code W1 — sealed, welded coil housing with a relief valve capable of

venting fugitive emissions to a safe location (additional plumbing from the sensor to a safe area, installed by the user, is required to vent properly)

• Code W3 — sealed, welded coil housing with separate electrode

compartments capable of venting fugitive emissions (additional plumbing from the sensor to a safe area, installed by the user, is required to vent properly)

The standard housing configuration is identified by a code W0 in the model number. This configuration does not provide separate electrode compartments with external electrode access. In the ev en t of a pr oc ess leak, these models will not protect the coils or other sensitive areas around the sensor from exposure to the pressure fluid (Figure 5-17).

5-15

Rosemount 8712

/2–14 NPT Conduit

Connection

(no relief valve)

Optional:

Use drain port to

plumb to a safe area

(Supplied by user)

/2 – 14 NPT Conduit

Connection

¼'' NPT – 5 psi

Pressure Relief Valve

Figure 5-17. Standard Housing Configuration — Sealed Welded Housing (Option Code W0)

Reference Manual

00809-0100-4664, Rev BA

January 2010

Relief Valves The first optional configuration, identified by the W1 in the model number

Figure 5-18. Coil-Housing Configuration — Standard Welded Housing With Relief Valve (Option Code W1)

option code, uses a completely welded coil housing. This configuration does not provide separate electrode comp ar tme nts with external electrode access. This optional housing configuration provides a relief valve in the housing to prevent possible overpressuring caused by damage to the lining or other situations that might allow process pressure to enter the housing. The relief valve will vent when the pressure inside the sensor housing exceeds 5 psi. Additional piping (provided by the user) may be connected to this relief valve to drain any process leakage to safe containment (see Figure 5-18).

5-16

Rosemount 8712ES Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Remote Mount Magnetic Flowmeter System

Table of Contents

Section 1 Introduction

SYSTEM DESCRIPTION The Rosemount

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

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

Section 2 Installation

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

TRANSMITTER SYMBOLS

PRE-INSTALLATION Before installing the Rosemount 8712 Magnetic Flowmeter Transmitter, there

Mechanical Considerations

Environmental Considerations

INSTALLATION PROCEDURES

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

Identify Options and Configurations

Hardware Switches The 8712 electronics board is equipped with

Conduit Ports and Connections

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

Electrical Considerations Before making any electrical connections to the Rosemount 8712, consider

Installation Category The installation category for the Rosemount 8712 is

Overcurrent Protection The Rosemount 8712 Flowmeter Transmitter requires overcurrent protection

OPTIONS, CONSIDERATIONS, AND PROCEDURES

Connect Transmitter Power

Connect 4–20 mA Loop External Power Source

Connect Pulse Output Power Source

Connect Auxiliary Channel 1

Connect Auxiliary Channel 2

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

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

Transmitter to Sensor Wiring

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

Sensor to Remote Mount Transmitter Connections

Section 3 Configuration

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

INSTALLATION CHECK AND GUIDE

LOCAL OPERATOR INTERFACE

BASIC FEATURES The basic features of the LOI include display control, tot al izer, data entry, and

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

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

LOI EXAMPLES Use the TRANSMITTER PARAMETER keys shown in Figure 3-1 to change

Table Value Example Setting the sensor line size:

Select Value Example Changing the ANALOG OUTPUT RANGE:

DIAGNOSTIC MESSAGES

Review The 8712 includes a capability that enables you to review the configuration

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

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

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

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

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

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

BASIC SETUP The basic configuration functions of the Rosemount 8712 must be set for all

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

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

PV URV (Upper Range Value)

PV LRV (Lower Range Value)

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

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.

Section 4 Operation

INTRODUCTION This section contains information for advanced configuration parameters and

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

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

Basic Diagnostics Th e basic diagnostics menu con tain s all of the st an dard diagno stics and test s

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

Diagnostic Variable Values

Trims Trims are used to calibrate the analog loop, calibrate the transmitter, re-zero

Status Status displays a summary of the health of the transmitter. If there are any

ADVANCED CONFIGURATION

DETAILED SETUP The detailed setup function provides access to other parameters within the

Additional Parameters The additional parameters menu provides a means to configure optional

Configure Outputs The configure outputs functionality cont ains functionality to configure the

LOI Configuration The LOI (local operator interface) configuration contains functionality to

Signal Processing The 8712 contains several advanced functions that can be used to stabilize

Universal Auto T rim The universal auto trim function enables the Rosemount 8712 to calibrate

Device Info Information variables are used for identification of Flowmeters in the field and

Section 5 Sensor Installation

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