Emerson Rosemount 8742C, 8700 Series Reference Manual

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Page 1

Reference Manual

00809-0100-4793, Rev CA August 2004

Rosemount 8742C Magnetic Flowmeter Transmitter with F

OUNDATION

™

Fieldbus and

8700 Series Magnetic Flowmeter Flowtube

www.rosemount.com

Page 2

Page 3

Reference Manual

00809-0100-4793, Rev CA August 2004

Rosemount 8742C

Rosemount 8742C Magnetic Flowmeter Transmitter with F

OUNDATION

™

Fieldbus and 8700

Series Magnetic Flowmeter Flowtube

NOTICE

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

Within the United States, Rosemount Inc. has two toll-free assistance numbers:

Customer Central

Technical support, quoting, and order-related questions.

1-800-999-9307 (7:00 am to 7:00 pm CST)

North American Response Center

Equipment service needs.

1-800-654-7768 (24 hours—includes Canada)

Outside of the United States, contact your local Rosemount representative.

www.rosemount.com

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 Rosemount Sales Representative.

Rosemount, the Rosemount logotype, Fisher-Rosemount, Managing the Process Better, PlantWeb, and SMART FAMILY are registered trademarks of Rosemount Inc. DeltaV is a trademark of the Fisher-Rosemount group of companies. HART is a registered trademark of the HART Communication Foundation. Tefzel and Teflon are registered trademarks of E.I. du Pont de Nemours & Co. Ryton is a registered trademark of the Phillips Petroleum Co. Fluoraz is a registered trademark of Greens, Tweed & Co., Inc. Hastelloy C and Hastelloy C-22 are registered trademarks of Haynes International,

OUNDATION is a trademark of the Fieldbus Foundation.

Cover photo: 8742h0002

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Reference Manual

00809-0100-4793, Rev CA August 2004

Rosemount 8742C

Table of Contents

SECTION 1 Introduction

SECTION 2 Installation

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

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

Return of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

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

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

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

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

Simulate Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Transmitter Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Changing Hardware

Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Rotate Transmitter Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Conduit Ports and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Conduit Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Conduit Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Transmitter Coil Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Installation Category. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Overcurrent Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Transmitter Communication Input . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Power Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Field Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Transmitter Wiring Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Transmitter to

Flowtube Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Flowtube to Remote Mount Transmitter Connections . . . . . . . . . . 2-9

Flowtube to Integral Mount Transmitter Connections. . . . . . . . . . 2-10

www.rosemount.com

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Rosemount 8742C

Reference Manual

00809-0100-40793, Rev CA

August 2004

SECTION 3 Flowtube Installation

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

Flowtube Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Flowtube Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Upstream/Downstream

Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Flowtube Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Flow Direction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Installation (Flanged Flowtube) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Flange Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Installation

(Wafer Flowtube) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Flange Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Installation

(Sanitary Flowtube) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Alignment and Bolting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Process Leak Protection (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Standard Housing Configuration . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Relief Valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Process Leak Containment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

SECTION 4 Configuration

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Quick Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Flowtube Calibration Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Assigning Device Tag and Node Address . . . . . . . . . . . . . . . . . . . . . . 4-2

AI Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Arithmetic Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Integrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

PID Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Configuring Links and Scheduling Block Execution. . . . . . . . . . . . . . . 4-5

Advanced Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Cascade Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Resource Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

FEATURES and FEATURES_SEL . . . . . . . . . . . . . . . . . . . . . . . . 4-8

MAX_NOTIFY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

PlantWeb

™

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

TOC-2

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Rosemount 8742C

SECTION 5 Operation and Maintenance

SECTION 6 Troubleshooting

APPENDIX A Reference Data

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Software Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Local Display Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Electronics Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Auto Zero Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Configuring the Advanced Diagnostics and Empty Pipe . . . . . . . . 5-4

Learning Empty Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Diagnostic Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Diagnostic Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Hardware Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Replacing the F

Step 1: Function Block Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Step 2: Diagnostic Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Step 3: Wiring Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Step 4: Process Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Step 5: Installed Flowtube Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Step 6: Uninstalled Flowtube Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Rosemount 8742C Transmitter Specifications . . . . . . . . . . . . . . . . . .A-1

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

Foundation Fieldbus Specifications . . . . . . . . . . . . . . . . . . . . . . . . A-3

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5

Rosemount 8705 and 8707 Flowtubes Specifications. . . . . . . . . . . . . A-5

Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8

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

Rosemount 8711 Wafer Flowtube Specifications . . . . . . . . . . . . . . . A-11

Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-11

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12

Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12

Rosemount 8714D Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14

Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14

Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14

Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-15

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-22

Rosemount 8742C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-22

Rosemount 8705 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-24

Rosemount 8707 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-28

Rosemount 8711 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-30

Rosemount 8714 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-31

OUNDATION

™

Fieldbus Electronics Housing. . . . . . 5-9

™

Fieldbus Terminal Block in the Housing5-10

™

Fieldbus Electronics Boards. . . . . . 5-10

TOC-3

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Rosemount 8742C

Reference Manual

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August 2004

APPENDIX B Product Certifications

APPENDIX C Resource Block

APPENDIX D Transducer Block

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

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

ATEX Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

European Pressure Equipment Directive (PED) (97/23/EC) . . . . . B-1

Electro Magnetic Compatibility (EMC) (89/336/EEC) . . . . . . . . . . .B-2

Low Voltage Directive (93/68/EEC) . . . . . . . . . . . . . . . . . . . . . . . .B-2

Other important guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2

Hazardous Location Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

Transmitter Approval Information . . . . . . . . . . . . . . . . . . . . . . . . . B-3

Flowtube Approval Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7

Definition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1

Parameters and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1

Resource Block Errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-5

Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5

Alarm Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-6

Status Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-6

VCR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-6

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-6

Definition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-1

Parameters and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-2

Flow-Specific Block Configuration Values . . . . . . . . . . . . . . . . . . . . . .D-3

Transducer Block Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-4

Transducer Block Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-5

Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-5

Alarm Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-5

Status Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-6

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-6

APPENDIX E Field-Removable Electrodes

TOC-4

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1

Remove the Electrode Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1

Replace the Electrode Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2

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Section 1 Introduction

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

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

Return of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-3

Rosemount 8742C

SYSTEM DESCRIPTION The Rosemount

separate flowtube and transmitter units, and measures volumetric flow rate by detecting the velocity of a conductive liquid that passes through a magnetic field. Magnetic Flowmeter Systems consist of a flowtube and a transmitter. There are three Rosemount magnetic flowmeter flowtubes:

• Flanged Rosemount 8705

• Flanged High-Signal Rosemount 8707

• Wafer-Style Rosemount 8711

• Sanitary 8721

There are three Rosemount magnetic flowmeter transmitters:

• Rosemount 8712D/H

• Rosemount 8732C

• Rosemount 8742C

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

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

8700 Series Magnetic Flowmeter System combines

www.rosemount.com

This manual is designed to assist in the installation and operation of Rosemount 8742C Magnetic Flowmeter Transmitter with F fieldbus and 8700 Series Magnetic Flowmeter Flowtubes.

Attempting to install and operate the Rosemount 8705, 8707 High-Signal, or 8711 Magnetic Flowmeter Flowtubes with the Rosemount 8712D/H, 8732, or 8742 Magnetic Flowmeter Transmitter without reviewing the instructions contained in this manual could result in personal injury or equipment damage.

OUNDATION

™

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Rosemount 8742C

00809-0100-4793, Rev CA

Section 2: Installation

• Transmitter Commissioning

• Wiring Flowmeter to a Flowtube

Section 3: Flowtube Installation

• Handling

• Mounting

• Installation of a Flanged, Wafer, and Sanitary Flowtube

Section 4: Configuration

• Assigning Device Tag

• Configuring Blocks

• Configuring Links and Scheduling Block Execution

Section 5: Operation and Maintenance

• Software Operation

• Hardware Maintenance

• Replacing the F

OUNDATION

™

fieldbus Electronics Housing

Reference Manual

August 2004

Section 6: Troubleshooting

• Troubleshooting Procedures

• Electrical Circuit Diagrams

Appendix A: Reference Data

• Specifications for Rosemount 8742 Transmitter and 8700 Series Flowtubes

• Ordering Tables

• Dimensional Drawings

Appendix B: Product Certifications

• Transmitter Approval Information

• Flowtube Approval Information

Appendix C: Resource Block

• Parameters and Descriptions

• Modes

Appendix D: Transducer Block

• Parameters and Descriptions

• Modes

Appendix E: Field-Removable Electrodes

• Electrode Assembly

1-2

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Rosemount 8742C

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.

RETURN OF MATERIALS 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.

See “Safety Information” on page 4-1 for complete warning information.

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Rosemount 8742C

1-4

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Section 2 Installation

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1

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

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

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-4

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.

Rosemount 8742C

SAFETY INFORMATION

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 flowtube and transmitter is consistent with the appropriate FM or CSA approval.

Do not connect a Rosemount 8742C to a non-Rosemount flowtube that is located in an explosive atmosphere.

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

To avoid possible damage to the flowtube 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 flowtube ends are often used for protection.

Correct flange bolt tightening is crucial for proper flowtube 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 flowtube lining and possible flowtube replacement.

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Rosemount 8742C

Reference Manual

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August 2004

TRANSMITTER SYMBOLS

Caution Symbol — Check product documentation for details.

Protective conductor (grounding) terminal.

PRE-INSTALLATION Before installing the Rosemount 8742C Magnetic Flowmeter Transmitter,

there are several pre-installation steps that should be completed to make the installation process easier. They include identifying the options and configurations that apply to your application, setting the hardware switches if necessary, and consideration of physical requirements.

The mounting site for the 8742C should provide enough room for secure mounting, easy access to the conduit ports, and full opening of the transmitter covers.

To ensure maximum transmitter life, avoid excessive heat and vibration. Typical problem areas include high-vibration lines with integrally mounted transmitters, warm-climate installations in direct sunlight, and outdoor installations in cold climates. To avoid potential problems, remotely mounted transmitters may be installed in the control room. This protects the electronics from the harsh environment and provides easy access for configuration or service.

The Rosemount 8742C transmitter requires external power regardless of whether it is mounted remotely or integrally to the flowtube. Access to a suitable power source must be ensured.

Identify Options and Configurations

The standard application of the Rosemount 8742C includes a FOUNDATION fieldbus output. Be sure to identify 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 Rosemount 8742C electronics board is equipped with two

user-selectable hardware switches. These switches set Simulate Enable and Transmitter Security. The standard configurations for these switches when shipped from the factory are as follows:

Simulate Enable: Off

Transmitter Security: Off

Definitions of these switches and their functions are provided below. The switches are located on the outerboard of the electronics transmitter stack. See Figure 2-1 on page 2-3.

Simulate Enable The simulate enable switch is used in conjunction with the Analog Input (AI)

function block. The switch is used to enable flow measurement simulation. The switch is also used as a lock-out feature for the AI function block. To enable the simulate enable feature, the switch must transition form OFF to ON after power is applied to the transmitter, preventing the transmitter from being accidentally left in simulate mode.

Transmitter Security After you configure the transmitter, you may want to protect the configuration

data from unwarranted changes. Each transmitter is equipped with a security switch that can be positioned ON to prevent the accidental or deliberate change of configuration data.

2-2

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Figure 2-1. Hardware Switches

Rosemount 8742C

Instructions for changing the hardware switches are provided in “Changing Hardware Switch Settings” on page 2-3.

Simulate Enable

Transmitter Security

8742-1002H01A

Changing Hardware Switch Settings

Rotate Transmitter Housing

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 below:

NOTE

The hardware switches are located on the electronics board and changing their settings requires opening of 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. Unscrew and remove the electronics cover.

3. Identify the location of the switch.

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

Refer to Figure 2-1.

5. Screw and tighten the electronics cover.

The electronics housing can be rotated on the flowtube in 90° increments by loosening the four mounting bolts on the bottom of the housing, rotating the housing, and reinstalling the bolts. Refer to Figure 2-2 on page 2-4. When the housing is returned to its original position, be sure the surface is clean and there is no gap between the housing and the flowtube.

See “Safety Information” on page 2-1 for complete warning information.

2-3

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Rosemount 8742C

Figure 2-2. Rosemount 8742C Transmitter Dimensional Drawing

5.10

(130)

10.5

(267)

3.00 (76)

1.94 (49)

7.49 (190)

6.48 (165)

LOI Cover

8.81

(224)

3.07 (78)

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August 2004

/4”-14 NPT Electrical

Conduit Connections

(2 places)

3.43 (87)

/4”-14 NPT

Flowtube Conduit

Connections

(2 places)

11.02 (280)

WIRING Correct cable preparation is important for a successful installation. The

conduit connections needed for installation depend on transmitter location. A conduit run between the flowtube and transmitter is not required if the transmitter is integrally mounted on the flowtube.

Conduit Ports and Connections

Both the flowtube and transmitter junction boxes have ports for ¾-inch NPT conduit connections. These connections should be made in accordance with local or plant electrical codes. Unused ports should be sealed with metal plugs. Housing damage will result if metal plugs are overtightened.

Proper electrical installation is necessary to prevent errors due to electrical noise and interference. Before making any electrical connections to the Rosemount 8742C, consider the following standards and be sure to have proper power supply, conduit, and other accessories. Shielded cable must be used for best results in electrically noisy environments.

Conduit Connections The transmitter has ports for ¾–inch NPT conduit connections. If the port is

not being used, conduit seals should to be installed. In some cases, conduits may also require drainage if moisture could build up in the line.

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Rosemount 8742C

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

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

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.

NOTE

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

Figure 2-3. Cable Preparation Detail

1.00 (26)

NOTE Dimensions are in

Cable Shield

inches (millimeters).

8705-0041B

Transmitter Coil Input The Rosemount 8742C Magnetic Flowmeter Transmitter is a four-wire device.

This wiring section covers supplying power to the flowtube coils through the transmitter. The transmitter coil input power sends a pulsed DC frequency to the flowtube.

Wire the transmitter according to local electrical requirements. Ground the transmitter cage via the threaded conduit connection. For ac power applications, connect ac Neutral to terminal N and connect ac Line to terminal L1. For dc power applications, properly connect the positive and negative terminals. Units powered by 15-50 V dc power supply may draw up to 1 amp of current. In addition, follow the supply wire and disconnect requirements below:

1.0

0.75

0.5

0.25

Supply Current (Amps)

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

Power Supply (Volts)

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Rosemount 8742C

August 2004

Supply Wire Requirements

Use 12 to 18 AWG wire rated for the proper temperature application. For connections in ambient temperatures above 140 °F (60 °C), use a wire rated for 176 °F (80 °C). For ambients greater than 176 °F (80 °C), use a wire rated for 230 °F (110 °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 and per local electrical control.

Installation Category The installation category for the Rosemount 8742C is

(Overvoltage) Category II.

Overcurrent Protection The Rosemount 8742C Flowmeter Transmitter requires overcurrent

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

Power System Fuse Rating Manufacturer

110 V ac 250 V; 1 Amp, Quick Acting Bussman AGCI or Equivalent

220 V ac 250 V; 0.5 Amp, Quick Acting Bussman AGCI or Equivalent

Transmitter Communication Input

The FOUNDATION fieldbus communication requires a minimum of 9 V dc and a maximum of 32 V dc at the transmitter communication terminals.

NOTES

• Do not exceed 32 V dc at the transmitter communication terminals.

• Do not apply ac line voltage to the transmitter communication terminals.

Improper supply voltage can damage the transmitter.

Power Conditioning Each fieldbus power supply requires a power conditioner to decouple the

power supply output from the fieldbus wiring segment.

Field Wiring Power independent of the coil power supply must be supplied for FOUNDATION

fieldbus communications. Use shielded, twisted pair for best results. For new installations or to get maximum performance, twisted pair cable designed especially for fieldbus should be used. Table 2-1 details cable characteristics and ideal specifications.

Table 2-1. Ideal Cable Specifications for Fieldbus Wiring

Characteristic Ideal Specification

Impedance 100 Ohms ± 20% at 31.25 kHz

Wire Size 18 AWG (0,8 mm2)

Shield Coverage 90%

Attenuation 3 db/km

Capacitive Unbalance 2 nF/km

2-6

See “Safety Messages” on page 2-1 for complete warning information.

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Rosemount 8742C

NOTE

The number of devices on a fieldbus segment is limited by the power supply voltage, the resistance of the cable, and the amount of current drawn by each device.

Transmitter Wiring Connection

Figure 2-4. Rosemount 8742C Transmitter Field Wiring

To make the transmitter communication wiring connection, remove the end cover on the electronics housing. Connect the power leads to the positive (+) and negative (–) fieldbus communication terminals. The communication terminals are polarity insensitive: the polarity of the dc power leads does not matter when connecting to the power terminals.

When wiring to screw terminals, crimped lugs are recommended. Tighten the terminals to ensure adequate contact.

Both transmitter covers must be fully engaged to meet explosion proof requirements. Do not remove the transmitter covers in an explosive atmosphere when the transmitter is powered

6234 ft (1900 m) max

(depending upon cable

Integrated

Power

Conditioner

and Filter

Segment

Power

Supply

(Trunk)

(1)

Terminators

Fieldbus

(The power supply, filter, first terminator, and configuration tool are typically located in the control room.)

*Intrinsically safe installations may allow fewer devices per I.S. barrier.

(1) Pending final approval.

OUNDATION

Fieldbus

Configuration

Too l

(Spur)

Devices 1 through 11*

(Spur)

8742-8742_01A

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Rosemount 8742C

Figure 2-5. Power Connections

Input Power 90–250 V ac

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August 2004

Grounding Lugs

Fieldbus Outputs

8742-1002F01A

Transmitter to Flowtube Wiring

Figure 2-6. Conduit Preparation

Wrong Correct

Power

Outputs

Power

Outputs

Flanged and wafer flowtubes have two conduit ports as shown in Figures 3-13, 3-14, 3-15, and 3-16. 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 flowtube 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 2-6 for proper conduit installation diagram and Table 2-2 for recommended cable. For integral and remote wiring diagrams refer to Figure 2-7 and Figure 2-8.

Coil Drive

and

Electrode

Cables

Power

Outputs

Power

Outputs

Coil Drive and

Electrode

Cables

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Table 2-2. Cable Requirements

Rosemount 8742C

Description Part Number

Signal Cable (20 AWG) Belden 8762, Alpha 2411 equivalent 08712-0061-0001

Coil Drive Cable (14 AWG) Belden 8720, Alpha 2442 equivalent 08712-0060-0001

Combination Signal and Coil Drive Cable (18 AWG)

Belden 9368 equivalent

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

high-signal magmeter system. For remote mount installations, combination signal and coil drive cable should be limited to less than 100 ft. (30 m).

(1)

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 flowtube.

08712-0750-0001

Flowtube to Remote Mount Transmitter Connections

Figure 2-7. Wiring Diagram

Connect coil drive and electrode cables as shown in Figure 2-7.

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

8742b_07a

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Rosemount 8742C

Table 2-3. Flowtube to Remote Mount Transmitter

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August 2004

Rosemount 8712D/H Transmitters Rosemount 8705/8707/8711 Flowtubes

11 2 2

17 17 18 18 19 19

Flowtube to Integral Mount Transmitter Connections

Figure 2-8. Wiring Diagram to Rosemount 8732C/8742C Transmitter

Connect coil drive and electrode cables as shown in Figure 2-8.

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

Electronics Board

Table 2-4. Flowtube to Integral Mount Transmitter

2-10

8732-8732B01A

Rosemount 8732C/8742C Rosemount 8705/8711 Flowtubes

2 2

17 17

18 18

19 19

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Rosemount 8742C

Section 3 Flowtube Installation

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

Flowtube Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-3

Flowtube Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-4

Installation (Flanged Flowtube) . . . . . . . . . . . . . . . . . . . . . page 3-7

Installation (Wafer Flowtube) . . . . . . . . . . . . . . . . . . . . . . . page 3-10

Installation (Sanitary Flowtube) . . . . . . . . . . . . . . . . . . . . . page 3-12

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-12

Process Leak Protection (Optional) . . . . . . . . . . . . . . . . . page 3-15

This section covers the steps required to physically install the magnetic flowtube. For electrical connections and 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 operation in this section.

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

to warning information is required.

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

Do not connect a Rosemount 8742C to a non-Rosemount flowtube that is located in an explosive atmosphere.

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Reference Manual

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August 2004

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 8742C reference manual for any restrictions associated with a safe installation.

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

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Rosemount 8742C

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

the system to the installation site in the original shipping containers.

Te fl on mechanical damage and normal unrestrained distortion. Remove the end covers just before installation.

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

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

Figure 3-1 shows flowtubes correctly supported for handling and installation. Notice the plywood end pieces are still in place to protect the flowtube liner during transportation.

Figure 3-1. Rosemount 8705 Flowtube Support for Handling

-lined flowtubes are shipped with end covers that protect it from both

½- through 4-Inch

Flowtubes

See ”Safety Messages” on pages 3-1 and 3-2 for complete warning information.

8732-0281B02AB, C02AB

6-Inch and Larger

Flowtubes

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Rosemount 8742C

August 2004

FLOWTUBE MOUNTING Physical mounting of a flowtube is similar to installing a typical section of pipe.

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

Upstream/Downstream Piping

To ensure specification accuracy over widely varying process conditions, install the flowtube a minimum of five straight pipe diameters upstream and two pipe diameters downstream from the electrode plane (see Figure 3-2).

Figure 3-2. Upstream and Downstream Straight Pipe Diameters

5 Pipe Diameters

FLOW

2 Pipe Diameters

Flowtube Orientation The flowtube should be installed in a position that ensures the flowtube

remains full during operation. Figures 3-3, 3-4, and 3-5 show the proper flowtube orientation for the most common installations. The following orientations ensure that the electrodes are in the optimum plane to minimize 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 3-3 and 3-4, avoid downward flows where back pressure does not ensure that the flowtube remains full at all times.

8732-0281G02A

Figure 3-3. Vertical Flowtube Orientation

3-4

FLOW

8735-0005A01AB, 0005A01BB

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Figure 3-4. Incline or Decline Orientation

Rosemount 8742C

FLOW

Figure 3-5. Horizontal Flowtube Orientation

FLOW

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 flowtube thereby making it more susceptible to insulation by air or entrapped gas at the top of the flowtube.

FLOW

The electrodes in the Rosemount 8711 are properly oriented when the top of the flowtube is either vertical or horizontal, as shown in Figure 3-6. Avoid any mounting orientation that positions the top of the flowtube at 45° from the vertical or horizontal position.

8732-0005A01EB, 0005A01FB

8732-0005A01C

3-5

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Rosemount 8742C

Figure 3-6. Rosemount 8711 Mounting Position

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August 2004

45° Electrode Plane

Flow Direction The flowtube should be mounted so that the FORWARD end of the flow

arrow, shown on the flowtube identification tag, points in the direction of flow through the tube (see Figure 3-7).

Figure 3-7. Flow Direction

FLOW

8711-8711-E01AB, 8711-8711-F01A

8712-0281H02FD

3-6

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Rosemount 8742C

INSTALLATION (FLANGED FLOWTUBE)

The following section should be used as a guide in the installation of the flange-type Rosemount 8705 and Rosemount 8707 High-Signal Flowtubes. Refer to page 3-10 for installation of the wafer-type Rosemount 8711 Flowtube.

Gaskets The flowtube 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 flowtubes with lining protectors or a grounding electrode) require only one gasket on each end connection, as shown in Figure 3-8. If grounding rings are used, gaskets are required on each side of the grounding ring, as shown in Figure 3-9.

Figure 3-8. Gasket Placement

Gasket (Supplied by user)

Figure 3-9. Gasket Placement with Non-attached Grounding Rings

Gasket (Supplied by user)

Grounding Ring

Gasket (Supplied by user)

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

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

8705-0040E

8705-0038D

See ”Safety Messages” on pages 3-1 and 3-2 for complete warning information.

3-7

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August 2004

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 left and then snug and tighten right. Failure to do so will result in liner damage.

Always check for leaks at the flanges after tightening the flange bolts. Failure to use the correct flange bolt tightening methods can result in severe damage. All flowtubes require a second torquing twenty-four hours after initial flange bolt tightening.

Table 3-1. Flange Bolt Torque Specifications for Rosemount 8705 and 8707 High-Signal Flowtubes

Teflon/Tefzel liner Polyurethane liner

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

Class 150

(pound-feet)

Class 300

(pound-feet)

Class 150

(pound-feet)

Class 300

(pound-feet)

See ”Safety Messages” on pages 3-1 and 3-2 for complete warning information.

3-8

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Table 3-2. Flange Bolt Torque and Bolt Load Specifications for Rosemount 8705

Tef lon/ Tefz e l li n er

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 8742C

Figure 3-10. Flange Bolt Torquing Sequence

4-Bolt

8-Bolt

20-Bolt

Torque the flange bolts

in increments according to

the above numerical sequence.

12-Bolt

14-Bolt

8701-0870G02A

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Rosemount 8742C

Table 3-3. Flange Bolt Torque and Bolt Load Specifications for Rosemount 8705

Polyurethane Liner

Size

Code

005 010 1 inch (25 mm) 2 119 1 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

August 2004

INSTALLATION (WAFER FLOWTUBE)

The following section should be used as a guide in the installation of the Rosemount 8711 Flowtube. Refer to page 3-7 for installation of the flange-type Rosemount 8705 and 8707 High-Signal flowtube.

Gaskets The flowtube 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. If grounding rings are used, a gasket is required on each side of the grounding ring.

Alignment and Bolting

1. On 11/2 - through 8-inch (40 through 200 mm) line sizes, place

centering rings over each end of the flowtube. 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 flowtube between the pipe

flanges. Stud specifications are listed in Table 3-4. 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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Rosemount 8742C

Table 3-4. Stud Specifications

Nominal Flowtube 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 flowtube 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 3-5. Do not overtighten the bolts or the liner may be damaged.

NOTE

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

Figure 3-11. Gasket Placement with Centering Rings

Centering Rings

Installation, Studs Nuts and Washers

Customer-supplied

Gasket

FLOW

Flange Bolts Flowtube sizes and torque values for both Class 150 and Class 300 flanges

are listed in Table 3-5. Tighten flange bolts in the incremental sequence, shown in Figure 3-10.

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

8732-0002A1A

3-11

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Rosemount 8742C

INSTALLATION (SANITARY FLOWTUBE)

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Table 3-5. Flange bolt Torque Specifications of Rosemount 8711 Flowtubes

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

Gaskets

The flowtube 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 supplied with all Rosemount 8721 Sanitary flowtubes 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

sanitary fittings. Unique torque values and bolting techniques are not required.

Figure 3-12. Rosemount 8721 Sanitary Installation

User supplied clamp

User supplied gasket

If ordered manufacturer

supplied clamp and gasket.

8721_A_06.EPS

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

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 3-6 to determine which grounding option to follow for proper installation.

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NOTE

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

The flowtube 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 flowtube 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 3-6. Grounding Installation

Grounding Options

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

Conductive Unlined Pipe See Figure 3-13 Not Required Not Required See Figure 3-14

Conductive Lined Pipe Insufficient Grounding See Figure 3-14 See Figure 3-13 See Figure 3-14

Non-Conductive Pipe Insufficient Grounding See Figure 3-15 See Figure 3-16 See Figure 3-15

Rosemount 8742C

Figure 3-13. No Grounding Options or Grounding Electrode in Lined Pipe

Earth

Ground

8705-0040C

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Rosemount 8742C

Figure 3-14. Grounding with Grounding Rings or Lining Protectors

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August 2004

Earth

Ground

Figure 3-15. Grounding with Grounding Rings or Lining Protectors

Grounding Rings or

Lining Protectors

Earth

Ground

Grounding Rings

8705-038C

8711-0360A01B

3-14

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Figure 3-16. Grounding with Grounding Electrodes

Rosemount 8742C

Earth

Ground

8711-0360A01A

PROCESS LEAK PROTECTION (OPTIONAL)

The Rosemount 8705 Flowtube housing is fabricated from carbon steel to perform two separate functions. First, it provides shielding for the flowtube magnetics so that external disturbances cannot interfere with the magnetic field and thus affect the flow measurement. 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 descriptions 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 flowtube 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 flowtube to a safe area, installed by the user, is required to vent properly)

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Standard Housing Configuration

Figure 3-17. Standard Housing — Configuration Sealed Welded Housing (Option Code W0)

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 event of a process leak, these models will not protect the coils or other sensitive areas around the flowtube from exposure to the pressure fluid (Figure 3-17).

¾–14 NPT Conduit

(no relief valve)

Connection

8705-1002A05D

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

option code, uses a completely welded coil housing. This configuration does not provide separate electrode compartments 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 flowtube 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 3-18).

Figure 3-18. Coil-Housing Configuration — Standard Welded Housing With Relief Valve (Option Code W1)

Optional:

Use drain port to

plumb to a safe area

(Supplied by user)

¼'' NPT – 5 psi

Pressure Relief Valve

¾–14 NPT Conduit Connection

3-16

8705-0021A05B

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Rosemount 8742C

Process Leak Containment

Figure 3-19. Housing Configuration — Sealed Electrode Compartment (Option Code W3)

The second optional configuration, identified as option code W3 in the model number, divides the coil housing into three compartments: one for each electrode and one for the coils. Should a damaged liner or electrode fault allow process fluid to migrate behind the electrode seals, the fluid is contained in the electrode compartment. The sealed electrode compartment prevents the process fluid from entering the coil compartment where it would damage the coils and other internal components.

The electrode compartments are designed to contain the process fluid at full line pressure. An o-ring sealed cover provides access to each of the electrode compartments from outside the flowtube; drainports are provided in each cover for the removal of fluid.

NOTE

The electrode compartment could contain full line pressure and it must be depressurized before the cover is removed.

Fused Glass Seal

O-Ring Seal

Sealed Electrode Compartment

/2 - 27 NPT

Optional:

Use drain port to

plumb to a safe area

Grounding Electrode Port

(Supplied by user)

If necessary, capture any process fluid leakage, connect the appropriate piping to the drainports, and provide for proper disposal (see Figure 3-19).

8705-0007ADGB

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Section 4 Configuration

Quick Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-2

Assigning Device Tag and Node Address . . . . . . . . . . . . page 4-2

AI Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-3

Arithmetic Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-3

Integrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-3

PID Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-4

Configuring Links and Scheduling Block Execution . . . page 4-5

Resource Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-8

This section covers basic operation, software functionality, and basic configuration procedures for the Rosemount 8742C Magnetic Flowmeter Transmitter with F F

OUNDATION fieldbus technology and the function blocks used in the

OUNDATION

transmitter, refer to Appendix C: Resource Block, Appendix D: Transducer Block, and Appendix E: Field-Removable Electrodes.

™

fieldbus. For more information about the

Rosemount 8742C

Calibration Rosemount flowtubes are wet calibrated at the factory. They do not need

further calibration during installation.

Figure 4-1 illustrates how the flow signal is channeled through the transmitter.

Figure 4-1. Functional Block Diagram for the Rosemount 8742C Flowmeter with F

Function Blocks

•AI

•PID

•Integrator

OUNDATION fieldbus

Compliant

Communications

Stack

• Arithmetic

Resource Blocks

• Physical Device Information

Analog-to-Digital

Signal Conversion

OUNDATION fieldbus

Transducer Block

•Damping

• Diagnostics

• Engineering Units

Input-to-Output

Galvanic Isolation

8732-8732_01A

www.rosemount.com

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Rosemount 8742C

Each FOUNDATION fieldbus configuration tool or host device has a different way of displaying and performing configurations. Some will use Device Descriptions (DD) and DD Methods to make configuring and displaying data consistent across host platforms. There is no requirement that a configuration tool or host support these features. This section describes how to reconfigure the device manually.

August 2004

QUICK START-UP Once the magnetic flowmeter system is installed and communication is

established, configuration of the transmitter must be completed. The standard transmitter configuration, without Option Code C1, Custom Configuration, is shipped with the following parameters:

Engineering Units: ft/s Tube Size: 3-in. Flowtube Calibration Number: 100000501000000

Flowtube Calibration Number

ASSIGNING DEVICE TAG AND NODE ADDRESS

A unique flowtube calibration number, imprinted on the flowtube tag, enables any Rosemount flowtube to be used with any Rosemount transmitter without further calibration. Rosemount flow lab tests determine individual flowtube output characteristics. The characteristics are identified by a 16-digit calibration number.

The 16-digit calibration number can be programmed into the Rosemount 8712D/H or 8732C transmitter using the Local Operator Interface (LOI) or the 375 Field Communicator. Refer to the appropriate transmitter product manual for complete instructions. In a F fieldbus environment, the 8742C can be configured using the DeltaV configuration tool or another F

The calibration number is more than a correction factor, or K- factor, for the flowtube. The first five digits represent the low frequency gain. The ninth through thirteenth digits represent the high frequency gain. Both numbers are normalized from an ideal number of 10000. Standard configurations use the low frequency gain, but in noisy applications it may be worthwhile to switch to the higher frequency. An additional transmitter procedure, called Auto Zero, is required to perform at the higher coil drive frequency. The seventh and eighth digits represent the zero offset at both frequencies where the nominal value is 50. Empty pipe functionality is a transmitter feature that is controlled by a parameter in the transducer block. To turn off this feature, see Section 4: Operation and Maintenance, “Learning Empty Pipe” on page 4-5.

The 8742C Magnetic Flowmeter Transmitter is shipped with a blank tag and a temporary address to allow a host to automatically assign an address and a tag. If the tag or address need to be changed, use the features of the configuration tool. The tools do the following:

• Change the tag to a new value.

• Change the address to a new address.

OUNDATION fieldbus configuration device.

OUNDATION

™

4-2

When the device is at a temporary address, only the tag and address can be changed or written to. The resource, transducer, and function blocks are all disabled.

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AI BLOCK The Analog Input (AI) function block provides the primary interface of the

measurement to the control and/or monitoring systems. To properly configure the device, three parameters must be set in order to correctly interface between the AI block and transducer block.

1. The CHANNEL parameter defines which transducer block measurement is used by the AI block. In the 8742C Magnetic Flowmeter Transmitter, only one channel is available: AI1.CHANNEL = 1 (Flow).

2. The second parameter is the XD_SCALE.UNITS_INDX. The default configuration is feet per second (ft/s). Other units are available and listed in Appendix D: Table D-3.

3. Finally, since the flow measurement from the transducer block is in the correct units, L_TYPE is configured as Direct. L_TYPE can be either Direct or Indirect.

NOTE

Refer to the F 00809-0100-4783, for more details on configuring and troubleshooting the AI Block.

OUNDATION fieldbus Block product manual, document

ARITHMETIC BLOCK The Arithmetic function block provides the ability to configure a range

extension function for a primary input and applies the nine (9) different arithmetic types as compensation to or augmentation of the range extended input. All operations are selected by parameter and input connection.

The nine (9) arithmetic functions are Flow Compensation Linear, Flow Compensation Square Root, Flow Compensation Approximate, Btu Flow, Traditional Multiply and Divide, Average, Summer, Fourth Order Polynomial, and Simple HTG Compensate Level.

This Arithmetic function block supports mode control (Auto, Manual, and Out of service). There is no standard alarm detection in this block.

NOTE

Refer to the F 00809-0100-4783, for more details on configuring and troubleshooting the Arithmetic Block.

OUNDATION fieldbus Block product manual, document

INTEGRATOR The Integrator (INT) function block integrates one or two variables over time.

The block compares the integrated or accumulated value to pre-trip and trip limits and generates discrete output signals when the limits are reached.

The Integrator function block supports mode control, demand reset, a reset counter, and signal status calculation. There is no process alarm detection in the block.

NOTE

Refer to the F 00809-0100-4783, for more details on configuring and troubleshooting the Integrator Block.

OUNDATION fieldbus Block product manual, document

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PID BLOCK The PID function block combines all of the necessary logic to perform

proportional/integral/derivative (PID) control. The block supports mode control, signal scaling and limiting, feedforward control, override tracking, alarm limit detection, and signal status propagation.

The block supports two forms of the PID equation: Standard and Series. You

can choose the appropriate equation using the FORM parameter. The

Standard ISA PID equation is the default selection.



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

Standard Out GAIN e 1

Series Out GAIN e× 1

Where

GAIN: proportional gain value

: integral action time constant (RESET parameter) in seconds

s: laplace operator

: derivative action time constant (RATE parameter)

α: fixed smoothing factor of 0.1 applied to RATE F: feedforward control contribution from the feedforward input (FF_VAL parameter) e: error between setpoint and process variable

× F+×=



s1+







-------



+ F+=



----------------------------++

ατ

s1+×

s1+



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



ατ

s1+×



To further customize the block for use in your application, you can configure filtering, feedforward inputs, tracking inputs, setpoint and output limiting, PID equation structures, and block output action.

NOTE

Refer to the F

OUNDATION fieldbus Block product manual, document

00809-0100-4783, for more details on configuring and troubleshooting the PID Block.

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CONFIGURING LINKS AND SCHEDULING BLOCK EXECUTION

Figure 4-2. Measurement Configuration

Without configuring the links between blocks and scheduling the blocks to execute in the proper order, the application will not work correctly. Most hosts and/or configuration tools make this task a simple matter by using a Graphical User Interface (GUI).

Transducer

Block

Flow

Macro Cycle

AI Block

FBUS_48A

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Rosemount 8742C

Advanced Applications

Figure 4-3. Control Configuration

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Transducer

Block

Flow

AI Block

AI1

Out

Macro Cycle

PID

PID Block

Out

Analog Output

Block (AO)

CAS_IN

BKCAL_OUT

FBUS_47A

4-6

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Cascade Control Cascade control applications require two inputs. The configuration is to link

the output of one AI block into the PID block in the 8742C transmitter and to link the AI block of a second 8742C transmitter into the PID block of that transmitter. Another set of links between the second PID and the AO block, located in the control valve, is required (see Figure 4-4).

Figure 4-4. Cascade Control Configuration

Transducer

Block

Flow

Block 1 (AI1)

AI Block 2 (AI2) from second

8742C

Transmitter

OUT

Macro Cycle

PID Block 1

(PID1)

BKCAL_IN

OUT

PID Block 2 (PID2) from

second 8742C

Transmitter

OUT

CAS_IN

BKCAL_IN

BKCAL_OUT

AO Block

CAS_IN

BKCAL_OUT

AI1

AI2

PID

PID2

FBUS_46A

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Rosemount 8742C

RESOURCE BLOCK

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FEATURES and FEATURES_SEL

The parameters FEATURES and FEATURE_SEL determine optional behavior of the Rosemount 8742C.

FEATURES

The FEATURES parameter is read only and defines which features are supported by the Rosemount 8742C. Below is a list of the FEATURES the Rosemount 8742C supports.

UNICODE

All configurable string variables in the Rosemount 8742C, except tag names, are octet strings. Either ASCII or Unicode may be used. If the configuration device is generating Unicode octet strings, you must set the Unicode option bit.

REPORTS

The Rosemount 8742C supports alert reports. The Reports option bit must be set in the features bit string to use this feature. If it is not set, the host must poll for alerts.

SOFT W LOCK and HARD W LOCK

Inputs to the security and write lock functions include the hardware security switch, the hardware and software write lock bits of the FEATURE_SEL parameter, the WRITE_LOCK parameter, and the DEFINE_WRITE_LOCK parameter.

The WRITE_LOCK parameter prevents modification of parameters within the device except to clear the WRITE_LOCK parameter. During this time, the block will function normally updating inputs and outputs and executing algorithms. When the WRITE_LOCK condition is cleared, a WRITE_ALM alert is generated with a priority that corresponds to the WRITE_PRI parameter.

The FEATURE_SEL parameter enables the user to select a hardware or software write lock or no write lock capability. To enable the hardware security function, enable the HW_SEL bit in the FEATURE_SEL parameter. When this bit has been enabled the WRITE_LOCK parameter becomes read only and will reflect the state of the hardware switch. In order to enable the software write lock, the SW_SEL bit must be set in the FEATURE_SEL parameter. Once this bit is set, the WRITE_LOCK parameter may be set to “Locked” or “Not Locked.” Once the WRITE_LOCK parameter is set to “Locked” by either the software or the hardware lock, all user requested writes as determined by the DEFINE_WRITE_LOCK parameter shall be rejected.

The DEFINE_WRITE_LOCK parameter allows the user to configure whether the write lock functions (both software and hardware) will control writing to all blocks, or only to the resource and transducer blocks. Internally updated data such as process variables and diagnostics will not be restricted by the security switch.

Table 4-1 displays all possible configurations of the WRITE_LOCK parameter.

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Table 4-1. WRITE_LOCK Parameter

FEATURE_SEL HW_SEL bit

0 (off) 0 (off) NA 1 (unlocked) Read only NA All 0 (off) 1 (on) NA 1 (unlocked) Read/Write NA All 0 (off) 1 (on) NA 2 (locked) Read/Write Physical Function

0 (off) 1 (on) NA 2 (locked) Read/Write Everything None 1 (on) 0 (off) 1 (on) 0 (off) 1 (locked) 2 (locked) Read only Physical Function

1 (on) 0 (off) 1 (locked) 2 (locked) Read only Everything None

(1) The hardware and software write lock select bits are mutually exclusive and the hardware select has the highest priority. When the HW_SEL bit if set to 1

(on), the SW_SEL bit is automatically set to 0 (off) and is read only.

FEATURE_SEL SW_SEL bit

(1)

SECURITY SWITCH WRITE_LOCK

0 (unlocked) 1 (unlocked) Read only NA All

WRITE_LOCK Read/Write

FEATURES_SEL

FEATURES_SEL is used to turn on any of the supported features. The default setting of the Rosemount 8742C does not select any of these features. Choose one of the supported features if any.

Rosemount 8742C

DEFINE_WRITE_LOCK

Write access to blocks

Blocks only

MAX_NOTIFY The MAX_NOTIFY parameter value is the maximum number of alert reports

that the resource can have sent without getting a confirmation, corresponding to the amount of buffer space available for alert messages. The number can be set lower, to control alert flooding, by adjusting the LIM_NOTIFY parameter value. If LIM_NOTIFY is set to zero, then no alerts are reported.

PlantWeb™ Alarms The Resource Block will act as a coordinator for PlantWeb alarms.

There will be three alarm parameters (FAILED_ALARM, MAINT_ALARM, and ADVISE_ALARM) which will contain information regarding some of the device errors which are detected by the transmitter software. There will be a

RECOMMENDED_ACTION parameter which will be used to display the recommended action text for the highest priority alarm. FAILED_ALARM will have the highest priority followed by MAINT_ALARM and ADVISE_ALARM will be the lowest priority.

FAILED_ALARMS

A failure alarm indicates a failure within a device that will make the device or some part of the device non-operational. This implies that the device is in need of repair and must be fixed immediately. There are five parameters associated with FAILED_ALARMS specifically, they are described below.

FAILED_ENABLED

This parameter contains a list of failures in the device which makes the device non-operational that will cause an alarm to be sent. Below is a list of the failures with the highest priority first.

1. Output Board Electronics Failure

2. Sensor Board Electronics Failure

3. Output Board NV Memory Failure

4. Coil Drive Open Circuit Failure

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FAILED_MASK

This parameter will mask any of the failed conditions listed in FAILED_ENABLED. A bit on means that the condition is masked out from alarming and will not be reported.

FAILED _PRI

Designates the alarming priority of the FAILED_ALM. The default is 0 and the recommended value are between 8 and 15.

FAILED_ACTIVE

This parameter displays which of the alarms is active. Only the alarm with the highest priority will be displayed. This priority is not the same as the FAILED_PRI parameter described above. This priority is hard coded within the device and is not user configurable.

FAILED _ALM

Alarm indicating a failure within a device which makes the device non-operational.

MAINT_ALARMS

A maintenance alarm indicates the device or some part of the device needs maintenance soon. If the condition is ignored, the device will eventually fail. There are five parameters associated with MAINT_ALARMS, they are described below.

MAINT_ENABLED

The MAINT_ENABLED parameter contains a list of conditions indicating the device or some part of the device needs maintenance soon. If the condition is ignored, the device will eventually fail.

Below is a list of the conditions with the highest priority first.

1. Auto Zero Failure

2. NV Writes Deferred

3. Reverse Flow Detected

4. Electronics Trim Failure

5. Empty Pipe

6. PWA Simulate Active

7. PV Range Exceeded

MAINT_MASK

The MAINT_MASK parameter will mask any of the failed conditions listed in MAINT_ENABLED. A bit on means that the condition is masked out from alarming and will not be reported.

MAINT_PRI

MAINT_PRI designates the alarming priority of the MAINT_ALM. The default is 0 and the recommended values is 3 to 7.

MAINT_ACTIVE

The MAINT_ACTIVE parameter displays which of the alarms is active. Only the condition with the highest priority will be displayed. This priority is not the same as the MAINT_PRI parameter described above. This priority is hard coded within the device and is not user configurable.

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MAINT_ALM

An alarm indicating the device needs maintenance soon. If the condition is ignored, the device will eventually fail.

Advisory Alarms

An advisory alarm indicates informative conditions that do not have a direct impact on the device's primary functions There are five parameters associated with ADVISE_ALARMS, they are described below.

ADVISE_ENABLED

The ADVISE_ENABLED parameter contains a list of informative conditions that do not have a direct impact on the device's primary functions. Below is a list of the advisories with the highest priority first.

1. Primary Value Degraded

2. Electrode Signal Fault

3. High Process Noise

4. Grounding/Wiring Fault

ADVISE_MASK

The ADVISE_MASK parameter will mask any of the failed conditions listed in ADVISE_ENABLED. A bit on means the condition is masked out from alarming and will not be reported.

ADVISE_PRI

ADVISE_PRI designates the alarming priority of the ADVISE_ALM. The default is 0 and the recommended values are 1 or 2.

ADVISE_ACTIVE

The ADVISE_ACTIVE parameter displays which of the advisories is active. Only the advisory with the highest priority will be displayed. This priority is not the same as the ADVISE_PRI parameter described above. This priority is hard coded within the device and is not user configurable.

ADVISE_ALM

ADVISE_ALM is an alarm indicating advisory alarms. These conditions do not have a direct impact on the process or device integrity.

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Rosemount 8742C

Table 4-2. RB.RECOMMENDED_ATION

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Recommended Actions for PlantWeb Alarms

RECOMMENDED_ACTION

The RECOMMENDED_ACTION parameter displays a text string that will give a recommended course of action to take based on which type and which specific event of the PlantWeb alarms is active.

Failed/Maint/Advise

Alarm Type

NONE None No action required

FAILED

MAINTENANCE

ADVISORY

Active Event

1. Output Board Electronics Failure

2. Sensor Board Electronics Failure

3. Output Board NV Memory Failure

4. Coil Drive Open Circuit Failure

1. Auto Zero Failure Re-run the auto zero procedure. This function

2. NV Writes Deferred Wait for deferred data to be saved in next 6hr

3. Reverse Flow Detected

4. Electronics Trim Failure

5. Empty Pipe If this diagnostic is unexpected, perform

6. PWA Simulate Active Disable simulation to return to process

7. PV Range Exceeded Reduce Flow.

1. Primary Value Degraded

2. Electrode Signal Fault

3. High Process Noise Increase the transmitter coil drive frequency.

4. Grounding/Wiring Fault

Recommended Action Text String

Replace the Fieldbus Electronics Module Assembly.

Cycling power may correct memory problems. If problem persists, replace board stack.

Reset the device then download the device configuration.

Verify transmitter is working properly with flow tube simulator and/or verify flow tube resistance values are valid with multimeter.

is suggested, but not required, when increasing the coil drive frequency.

period. Verify the flowtube is mounted properly. Verify

terminal block wiring is correct. Re-run the electronics trim procedure with an

8714D calibrator. If failure message still appears, replace electronics.

flowtube resistance checks as described in the manual.

monitoring and control.

Reduce Flow.

Verify moisture is not in flow tube junction box. Perform flow tube resistance checks as described in the manual.

Verify that the magmeter is grounded properly. Check the recommended grounding and

wiring practices as detailed in the product manual.

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Rosemount 8742C

Simulation

Simulation replaces the channel value coming from the transducer block for testing purposes.

The following procedure is used to simulate a DI output.

To change the output value place the Target Mode of the block to Manual and then change the OUT_D.VALUE to the desired value.

To simulate both the value and status do the following:

1. If the Simulate Switch is in the OFF position, move it to ON. If the Simulate switch is already in the ON position, you must move it to Off an place it back in to the ON position.

NOTE

As a safety measure, the switch must be reset every time power is interrupted to the device in order to enable SIMULATE. This prevents a device that is tested on the bench from getting installed in the process with SIMULATE still active.

2. To change both the OUT_D.VALUE and OUT_D.STATUS of the DI Block, set the TARGET MODE to AUTO.

3. Set SIMULATE_D.ENABLE_DISABLE to ‘Active’.

4. Enter the desired values for SIMULATE_D. SIMULATE_VALUE and SIMULATE_D. SIMULATE_STATUS.

If errors occur when performing the above steps, be sure that the SIMULATE jumper has been reset after powering up the device.

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Section 5 Operation and Maintenance

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-1

Software Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-1

Hardware Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-9

This section covers basic operation and maintenance instructions such as configuring empty pipe and other diagnostics, rotating the housing and local display, and performing replacement of some parts. Instructions and procedures in this section may require special precautions to ensure the safety of the personnel performing the operations. Please read the following safety messages before performing any operation described in this section. Refer to these warnings when appropriate throughout this section.

SAFETY INFORMATION

SOFTWARE OPERATION

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

Do not connect a Rosemount 8742C to a non-Rosemount flowtube that is located in an explosive atmosphere.

Instructions and procedures listed here are specific to the Rosemount 8742C Transmitter. The examples use Delta V configuration tools can be used by consulting the index numbers in Appendix D: Transducer Block.

™

as the host system, but other

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Local Display Configuration

The local display can be configured in four languages: English, Spanish, French, and German. The display language can be changed by changing the transducer block parameter, DISPLAY_MODE. Table 5-1 lists the phrase, along with the text shown on the display.

Table 5-1. Local Display screens for Rosemount 8742C Magnetic Flowmeter Transmitter with F

OUNDATION

™

fieldbus

Definition English Spanish French German

Model number of transmitter 8742C Magmeter Caud. Mag. 8742C Trans Mag 8742C 8742C MID Good status, no error messages Status: Good Estado: Bien Measure Bonne Messung OK Grounding/Wiring Fault detected Grnd Wire Fault Falla Cabl Tierr Défaut Terre Fehler Erde/Verk High transmitter temperature detected High 8742 Temp Temp 8742 Alta Temp 8742C Haute Hochtemp 8742 High process noise detected Hi Process Noise Ruid Proces Alto Bruits Détectés Proz Rauschen Empty Pipe detected Empty Pipe Tubo Vacío Tube Vide Décelé Leitung Leer Electronics Trim Failure detected Trim Failure Falla Ajuste Défaut Trim Trim Fehler PV status is uncertain Status: Uncertain Estado: Incierto Mesure Douteuse Mesung Unsicher Auto Zero Trim Failure detected AutoZero Failure Fallo AutoCero Défaut Autozéro AutoNull Fehler Flow rate is over sensor range Flow > 12 m/s Caudal > 12 m/s Vitesse > 12 m/s Flow Zu Hoch Transducer block mode is out of service Out of Service Fuera de Servic. BT Hors Service Ausser Betrieb PV status is bad Status: Bad Estado: Mal Mesure Mauvaise Messung Schlecht Electrode fault detected Electrode Fault Falla Electrodo Défaut Electrode Elecktrode Fehler Flow rate is over sensor limit Flow > 13.2 m/s Caudal > 13.2 m/s Vitesse > 13,2 m/s Flow Zu Hoch Coil drive open circuit detected Coil Drive Open Bobina Abierta Défaut Bobines Spule Defekt Electronics failure detected Electronics Fail Falla Electrónic Panne Electroniq Elekronikdefekt Electronics trim is in progress (two lines)

Auto Zero Trim in progress (two lines)

Learn Empty Pipe in progress (two lines)

(1) The “In Progress” string must be a maximum of 14 characters. The 16th character on the 2nd line of the display is reserved for a special character during

the trim functions.

(1)

Electronic Trim Ajust Electrónic Réglage Electron Elektronik Trim In Progress En Progreso En Cours Läuft Auto Zero Auto Cero Réglage Autozéro AutoNull In Progress En Progreso En Cours Läuft Learn E Pipe Detec. Tubo Vacío Réglage TubeVide Leitung Leer Erk In Progress En Progreso En Cours Läuft

Calibration Pulsed DC magnetic flowmeters do not typically require periodic calibration.

There are no moving parts in a magnetic flowmeter flowtube or transmitter. However, it is possible to do an electronics trim on the transmitter. If a magmeter is not performing properly, refer to Section 5: Troubleshooting.

Electronics Trim Electronics trim is the function by which the factory calibrates the transmitter.

This procedure is rarely needed by customers. It is only necessary if you suspect the Rosemount 8742C is no longer accurate. A Rosemount 8714 Calibration Standard is required to complete an electronics trim. Attempting an electronics trim with out a Rosemount 8714 may result in an inaccurate transmitter or an error message. Electronics trim must be performed only with the coil drive mode set to 5 Hz and with a nominal flowtube calibration number stored in the memory.

NOTE

Attempting an electronics trim without a Rosemount 8714D may result in an inaccurate transmitter, or a “TRIM FAILURE” message may appear. If this message occurs, no values were changed in the transmitter. Simply power down the Rosemount 8742C to clear the message.

To simulate a nominal flowtube with the Rosemount 8714D, you must change the following four parameters in the Rosemount 8742:

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Rosemount 8742C

1. Tube Calibration Number - 1000015010000000

2. Units - ft/s

3. Coil Pulse Mode - 5 Hz

The instructions for changing these parameters are located in the parameter descriptions in this section.

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

1. Power down the transmitter.

2. Connect the transmitter to a Rosemount 8714D flowtube simulator.

3. Power up the transmitter with the Rosemount 8714D connected and read the flow rate. The electronics need about a 30-minute warm-up time to stabilize.

4. Initiate an electronics trim through the transducer block. Click on the transducer block, select calibrate, and then select Electronics Trim.

The electronics trim takes about two minutes to complete. No transmitter adjustments are required. A symbol appears in the lower right-hand corner of the local display to indicate the process is running.

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Auto Zero Trim The auto zero trim function initializes the transmitter for use with the 37.5 Hz

coil drive mode only. Run this function only with the transmitter and flowtube installed in the process. The flowtube must be filled with process fluid at zero flow. Before running the auto zero function, be sure the coil drive mode is set to 37.5 Hz.

Configuring the Advanced Diagnostics and Empty Pipe

Set the loop to manual if necessary and begin the auto zero procedure. Click on the transducer block. The transmitter completes the procedure automatically in about two minutes. A symbol appears in the lower right-hand corner of the display to indicate that the procedure is running.

This screen allows the user to selectively turn on/off the magmeter diagnostics. When a diagnostic check is turned off, the user will not be notified via the status pages, or the PV status parameter if the selected condition has been detected. To get to this screen, click on the transducer block properties and then go to the diagnostics tab.

Learning Empty Pipe Empty pipe functionality is very useful for batch applications or a process

where the piping often runs empty. The Rosemount 8742C transmitter learns empty pipe functionality by measuring the resistance across the electrodes. The flowtube must be completely full of process fluid when configuring empty pipe. This procedure also describes how to turn on or off the empty pipe functionality.

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Rosemount 8742C

1. Right-click on the Transducer400 icon to initiate the empty pipe learning function. This will bring up the Transducer block menu items. From this menu, select Calibrate-Learn Empty Pipe, as shown in the diagram below.

2. The initial screen describes the process to be performed and any configuration requirements. The entire two-minute process will be performed. This is the last opportunity to cancel the opportunity and return to normal status. To start the process, click Next.

3. The transmitter will be put in Out of Service mode. The coil drive will be set to 5 Hz. The learning mode in 5 Hz mode is a 60 second process. A countdown clock is shown in the window. No intervention is required.

4. The transmitter will then automatically change to 37.5 Hz coil drive frequency and repeat the same process as in the 5 Hz coil drive mode.

5. After both sets of data are written to the device, a check is made on both the coil frequency and the mode. If the starting coil frequency was 5 Hz, the method will return it to 5 Hz. Likewise, if the starting mode was not Out of Service, the method will return the device to Auto mode. Clicking Finish from the final screen will exit the method.

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Diagnostics The magmeter specific diagnostics appear on the detailed status screen.

Click on the Transducer Block, select status, and move over to the detailed status tabs (See Figure 5-1). The advanced diagnostics (High Process Noise, Electrode Signal Fault, and Grounding/Wiring Fault) and empty pipe will not be activated unless the transmitter has been configured to signal these diagnostics. If the diagnostic has been triggered, the button next to the diagnostic will turn red and the bottom line of the local display will display the error message. For applicable diagnostics, a numeric value appears on the right side of the window.

Figure 5-1. Transducer Detailed Status

Diagnostic Information If a diagnostic has been triggered, the Rosemount 8742 transmitter can

supply additional information to resolve the issue. By clicking on the question mark in the upper right hand window and then selecting a diagnostic, an informative help screen appears. The first sentence of the help screen describes the symptom. The second sentence describes the probable cause. Corrective actions follow. Transmitters with the optional local display will also show the diagnostic status.

The second line on the local display provides a short description of a triggered diagnostic. If the PV status is uncertain, the error message alternates with the PV on the top line. The probable causes and corrective actions of all the diagnostics are listed in Table 5-2. These messages are available in an

™

AMS

/ Delta V™ environment by clicking on the question mark in the

Transducer block and then clicking on a particular diagnostic.

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Table 5-2. Triggered Diagnostics

Symptom Probable Cause Corrective Action

Primary Range Value Exceed

Sensor High Limit Exceeded

Reverse Flow Detected

Empty Pipe Detected The flowtube is not full or fluid. The process variable is

High Process Noise Detected

Coil Drive Open Circuit

The process variable (flow rate) is greater than 12 m/s (40 ft/s).

The process variable (flow rate) is greater than 13.2 m/s (44 ft/s).

The transmitter is measuring a reversed flow signal. The following actions can be taken if reverse flow is unexpected.

zero. The following actions can be taken if empty pipe detection is unexpected.

The signal to noise ratio is less than 25.

Transmitter has detected an open coil circuit condition.

• Lower the process rate.

• Increase the flowtube line sizes.

• Lower the process flow rate.

• Increase the flowtube line size.

• Verify flowtube is not installed backwards. Check flow direction arrow on the flowtube. Confirm the direction of process flow.

• Confirm the wiring between the flowtube and the transmitter on the flowtube is not reversed. Corresponding terminal block numbers in the flowtube and transmitter must be connected.

• Verify twisted shielded cable is being used.

• Siphon effect or leaky valve may cause reverse flow.

• Verify flowtube is full.

• Increase process fluid conductivity above 50 microsiemens/cm.

• Properly connect the wiring between the flowtube and the transmitter on the flowtube. Corresponding terminal block numbers in the flowtube and transmitter must be connected.

• Perform flowtube electrical resistance tests. Confirm the resistance reading between coil ground (ground symbol) and coil (1 and 2) is infinity. Confirm the resistance reading between electrode ground (17) and an electrode (18 or 19) is greater than 2 kohms and rises. For more detailed information, consult the flowtube product manual.

To turn off empty pipe diagnostic, go to the diagnostic screen in the transducer block properties.

• Increase transmitter coil drive frequency to 37.5 Hz and, if possible, perform Auto Zero function.

• Verify flowtube is electrically connected to the process with grounding electrode, grounding rings with grounding straps, or lining protector with grounding straps.

• If possible, redirect chemical additions downstream of the magmeter.

• Verify process fluid conductivity is above 10 microsiemens/cm.

To turn off high process noise detection, go to the diagnostic screen in the transducer block properties.

• Perform flowtube electrical resistance tests. Confirm the resistance reading between coil ground (ground symbol) and coil (1 or 2) is infinity. Confirm the resistance reading between electrode ground (17) and an electrode (18 or

19) is greater than 2 kohms and rises. For more detailed information, consult the flowtube product manual.

• Verify transmitter electronics with Rosemount 8714 reference standard. The dial on the 8714 should be set at 9.1 m/s (30 ft/s). The transmitter should be set up with the nominal flowtube calibration number (1000015010000000) and 5 Hz coil drive frequency.

• Properly connect the wiring between the flowtube and the transmitter on the flowtube. Corresponding terminal block numbers in the flowtube and transmitter must be connected.

Rosemount 8742C

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Table 5-2. Triggered Diagnostics

Symptom Probable Cause Corrective Action

Electrode Signal Fault Detected

Grounding/ Wiring Fault

Electronics Failure The electronics board stack has failed.

Electronics Trim Failure

Auto Zero Failure The Auto Zero process has been interrupted or failed.

The flow signal has been compromised. The process variable is likely reading less than expected.

The transmitter detected high levels of 50/60 Hz noise caused by improper wiring or poor process grounding.

The transmitter calibration process has been interrupted or failed. No internal calibration parameters have been modified.

No internal Auto Zero parameters have been modified.

• Remove any moisture or contamination in the flowtube terminal block or, if applicable, the sealed electrode compartments.

WARNING: The electrode compartment may contain line pressure. Removing the cover before depressurizing may result in death or serious injury.

19) is greater than 2 kohms and rises. For more detailed information, consult the flowtube product manual.

• Verify flowtube is electrically connected to the process with grounding electrode, grounding rings with grounding straps, or lining protector with grounding straps.

• Verify transmitter electronics with Rosemount 8714 reference standard. The dial on the 8714 should be set at 9.1 m/s (30 ft/s). The transmitter should (1000015010000000) and 5 Hz coil drive frequency.

• Properly connect the wiring between the flowtube and the transmitter on the flowtube. Corresponding terminal block numbers in the flowtube and transmitter must be connected.

To turn off electrode signal fault detection, go to the diagnostic screen in the transducer block properties.

• Connect ground rings, grounding electrode, lining protector, or grounding straps. Grounding diagrams are included in the flowtube product manual.

• verify flowtube is full.

• Verify wiring between flowtube and transmitter is prepared properly. Shielding should be stripped back less than 2.5 cm (1 in).

• Use separate shielded twisted pairs for wiring between flowtube and transmitter.

• Properly connect the wiring between the flowtube and the transmitter on the flowtube. Corresponding terminal block numbers in the flowtube and transmitter must be connected.

To turn off grounding/ wiring diagnostic, go to the diagnostic screen in the transducer block properties.

• Replace the electronics board stack or complete transmitter.

• If electronics trim performed inadvertently, cycle transmitter power to clear message.

• Verify transmitter electronics with Rosemount 8714 reference standard. The dial on the 8714 should be set at 9.1 m/s (30 ft/s). The transmitter should (10000015010000000) and 5 Hz coil drive frequency.

• If Auto Zero performed inadvertently, cycle transmitter power to clear message.

• Repeat Auto Zero process with a full pipe and no flow.

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Diagnostic Counter The status tab in the Transducer Block window has a diagnostic counter that

counts the number of times the particular diagnostic was detected during the life of the transmitter. The values can not be changed in the field.

HARDWARE MAINTENANCE

Replacing the F

OUNDATION

™

Fieldbus

Electronics Housing

The 8742C Magnetic Flowmeter Transmitter has no moving parts and requires a minimum amount of scheduled maintenance. The transmitter features a modular design for easy maintenance. If you suspect a malfunction, check for an external cause before performing the diagnostics presented below.

Rosemount flowtubes do not have any parts that require calibration or maintenance. To confirm the working condition of the flowtube, refer to Section 5: Troubleshooting.

The following procedures will help you disassemble and assemble the 8742C hardware if you have followed the troubleshooting guide earlier in this section of the manual and determined that hardware components need to be replaced.

The Rosemount 8742C Magnetic Flowmeter Transmitter electronics housing can be replaced easily when necessary. The procedure is the same for integral or remote mount units. Use the following procedure:

Remove the Electronics Housing

1. Turn off and disconnect electric power to the transmitter.

2. Disconnect the wires and conduit from the housing.

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Rosemount 8742C

Figure 5-2. Transmitter Attached to Flowtube Pedestal

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Flowtube

Pedestal

Figure 5-3. Transmitter Removed from Flowtube Pedestal

Replacing the F

OUNDATION

™

Fieldbus Terminal Block in the Housing

Grounding

Lug

3. Use a wrench to loosen the housing from the flowtube pedestal by turning the bolts clockwise (inward).

4. Slowly pull the electronics housing no more than 1.5 in. from the flowtube pedestal. See Figure 5-3.

5. Using a screwdriver, disconnect all wiring between the wiring assembly and the flowtube.

The Rosemount 8742C terminal block is permanently attached to the electronics housing. It is not possible to remove the terminal block from the electronics house without damaging the transmitter.

8742-1002A03A

8742-1002A03B

Replacing the F

OUNDATION

™

Fieldbus

Electronics Boards

See “Safety Information” on page 5-1 for complete warning information.

5-10

The 8742C Magnetic Flowmeter Transmitter FOUNDATION™ fieldbus electronics boards may need to be replaced if they are damaged or nonfunctional. Use the following procedures to replace electronics boards in the Rosemount 8742C. You will need a small, flat-head screwdriver.

NOTE

The electronics boards are electrostatically sensitive. Be sure to observe handling precautions for static-sensitive components.

Remove the Electronics Boards

1. Turn off and disconnect all electric power to the transmitter.

2. Unscrew and remove the electronics board compartment cover.

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Figure 5-4. Electronics Board Assembly

Rosemount 8742C

Electronics Boards

8742-8742P01A

3. Loosen the three captive screws that anchor the electronics.

4. Slowly pull the electronics boards out of the housing.

Install the Electronics Boards

1. Verify that all electric power to the Rosemount 8742C Magnetic Flowmeter Transmitter is disconnected.

2. Align the three electronics boards over the captive screw holes in the housing.

3. Slowly press the boards into place. Do not force the boards down. Check the screw alignment if they do not glide into place.

4. Tighten the captive screws to anchor the three electronics boards.

5. Screw and tighten the electronics board compartment cover.

Local Display Rotation

1. Turn off and disconnect all electric power to the transmitter.

2. Unscrew and remove the extended LCD meter cover.

3. Loosen the three captive screws that anchor the local display to the electronics board stack.

4. Slowly pull the local display away from the electronics board stack. The indicator may be rotated in 90° increments for easy viewing. The 20-pin connector can be placed in any of the 4 locations on the back of the local display, but the connector must line up with receptors on the electronics board stack.

5. Rotating the local display may require moving one or two screws from their previous position. Move screws to align with the standoffs on the electronics board stack.

6. Slowly press the 20-pin connector into the electronics board stack. Tighten the captive screws to anchor the local display into the electronics board stack.

7. Screw and tighten the extended LCD meter cover.

See “Safety Information” on page 5-1 for complete warning information.

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Section 6 Troubleshooting

Step 1: Function Block Errors . . . . . . . . . . . . . . . . . . . . . . page 6-3

Step 2: Diagnostic Messages . . . . . . . . . . . . . . . . . . . . . . page 6-3

Step 3: Wiring Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6-3

Step 4: Process Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6-3

Step 5: Installed Flowtube Tests . . . . . . . . . . . . . . . . . . . . page 6-3

Step 6: Uninstalled Flowtube Tests . . . . . . . . . . . . . . . . . . page 6-5

This section covers basic transmitter and flowtube troubleshooting. Problems in the magnetic flowmeter system are usually indicated by incorrect output readings from the system, error messages, or failed tests. Consider all sources when identifying a problem in your system. If the problem persists, consult your local Rosemount representative to determine if the material should be returned to the factory.

Instructions and procedures in this section may require special precautions to ensure the safety of the personnel performing the operations. Please read the following safety messages before performing any operation described in this section. Refer to these warnings when appropriate throughout this section.

Rosemount 8742C

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

Do not connect a Rosemount 8742C to a non-Rosemount flowtube that is located in an explosive atmosphere.

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 (MSDA) for each hazardous substance identified must be included with the returned goods.

The Magnetic Flowmeter Transmitter performs self diagnostics on the entire magnetic flowmeter system: the transmitter, the flowtube, and the interconnecting wiring. By sequentially troubleshooting each individual piece of the magmeter system, it becomes easier to pin point the problem and make the appropriate adjustments.

If there are problems, Table 6-1 lists the most common magmeter problems and corrective actions.

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Table 6-1. Quick Troubleshooting Guide

Symptom Potential Cause Corrective Action

Reading does not appear to be within rated accuracy

Noisy process Chemical additives upstream of

Meter output is unstable Electrode incompatibility Check the Magnetic Flowmeter Material Selection Guide

Transmitter, control system, or other receiving device not configured properly

Electrode coating Use bulletnose electrodes in the Rosemount 8705 Flowtube.

Air in line Move the flowtube to another location in the process line to

Flow rate is below 1 ft/s (specification issue)

Insufficient upstream/downstream pipe diameter

Cables for multiple magmeters run through same conduit

Auto zero was not performed when the coil drive frequency was changed from 5 Hz to 37.5 Hz Flowtube failure—shorted electrode See “Step 2: Diagnostic Messages” on page 6-3.

Flowtube failure—shorted or open coil See “Step 2: Diagnostic Messages” on page 6-3. Transmitter failure Replace the electronics boards. Transmitter wired to correct flowtube Check wiring

magnetic flowmeter

Sludge flows—mining/coal/sand/ slurries (other slurries with hard particles)

Styrofoam or other insulating particles in the process

Electrode coating Use bulletnose electrodes in the Rosemount 8705 Flowtube.

Air in the line Move the flowtube to another location in the process line to

Improper grounding See “Step 2: Diagnostic Messages” on page 6-3. High local magnetic or electric fields Move the magnetic flowmeter (5 ft away is usually acceptable). Sticky valve (Look for periodic

oscillation of meter output)

Check all configuration variables for the transmitter, flowtube, communicator, and/or control system.

Check these other transmitter settings: Flowtube calibration number Units Line size

Downsize the flowtube to increase the flow rate above 3 ft/s. Periodically clean the flowtube.

ensure that it is full under all conditions. See the accuracy specification for specific transmitter and

flowtube. Move flowtube to location where 5 pipe diameters upstream

and 2 pipe diameters downstream is possible Run only one conduit cable between each flowtube and

transmitter Perform the auto zero function with full pipe and no flow.

Complete the possible solutions listed under “Step 4: Process Noise” on page 6-3. Move the injection point downstream of the magnetic flowmeter, or move the magnetic flowmeter.

Decrease the flow rate below 10 ft/s.

Complete the possible solutions listed under “Step 4: Process Noise” on page 6-3. Consult the factory.

Use a smaller flowtube to increase the flow rate above 3 ft/s. Periodically clean the flowtube.

ensure that it is full under all conditions.

(00816-0100-3033) for chemical compatibility with electrode material located on www.rosemount.com.

Correct valve sticking.

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Rosemount 8742C

STEP 1: FUNCTION BLOCK ERRORS

STEP 2: DIAGNOSTIC MESSAGES

STEP 3: WIRING ERRORS

STEP 4: PROCESS NOISE

Specific transmitter software troubleshooting for resource block errors and transducer block diagnostics are presented in the appendices.

Messages on the local display or diagnostics with a red light in the detailed status of the transducer block also provide guidance in troubleshooting problems. Refer to Section 5: Operation and Maintenance for details.

The most common magmeter problem is wiring between the flowtube and the transmitter in remote mount installations. The signal wire and coil drive wire must be twisted shielded cable: 20 AWG twisted shielded cable for the electrodes and 14 AWG twisted shielded cable for the coils. Ensure that the cable shield is connected at both ends of the electrode and coil drive cables. Signal and coil drive wires must have their own cables. The single conduit that houses both the signal and coil drive cables should not contain any other wires. For more information on proper wiring practices, refer to Section 2: Installation, “Wiring” on page 2-4.

In some circumstances, process conditions rather than the magmeter can cause the meter output to be unstable. Possible solutions for addressing a noisy process situation are given below. When the output attains the desired stability, no further steps are required.

The Auto Zero function describes on page 5-4 how to initializes the transmitter for use with the 37.5 Hz coil drive mode only. Run this function only with the transmitter and flowtube installed in the process. The flowtube must be filled with process fluid with zero flow rate. Before running the auto zero function, be sure the coil drive mode is set to 37.5 Hz.

STEP 5: INSTALLED FLOWTUBE TESTS

Set the loop to manual if necessary and begin the auto zero procedure. The transmitter completes the procedure automatically in about two minutes. A symbol appears in the lower right-hand corner of the display to indicate that the procedure is running.

1. Change the coil drive to 37.5 Hz. Complete the Auto Zero function, if possible.

2. Increase the damping.

Consult your Rosemount sales representative about using a high-signal magnetic flowmeter system.

If a problem with an installed flowtube is identified, the following chart can assist in troubleshooting the flowtube. Before performing any of the flowtube tests, disconnect or turn off power to the transmitter. To interpret the results, the hazardous location certification for the flowtube must be known. Applicable codes for the Rosemount 8705 are N0, N5, and KD. Applicable codes for the 8707 are N0 and N5. Applicable codes for the 8711 are N0, N5, E5, and CD. Always check the operation of test equipment before each test.

If possible, take all readings from inside the flowtube junction box. If the flowtube junction box is inaccessible, take measurements as close as possible. Readings taken at the terminals of remote-mount transmitters that are more than 100 feet away from the flowtube may provide incorrect or inconclusive information and should be avoided. A flowtube circuit diagram is provided in Figure 6-1.

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Ω∞Ω

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August 2004

Test equipment (such as Fluke Model 25, 27, 83, 85, 87, or 8060A multimeter and a B&K Model 878 LCR meter or equivalent) is needed to conduct these tests. Same of the tests will require measuring conductance (nS, nanosiemens), the reciprocal of resistance. It is possible to test a LCR meter by selecting the units nS and holding the leads apart. The value should be less than one, while touching the leads together should result in an overload value. The LCR meter may be used with flow in the flowtube.

Tes t

A. Flowtube Coil

B. Shields to Case

C. Coil Shield to Coil

D. Electrode Shield to Electrode

Flowtube Location

Installed or Uninstalled

Installed LCR (Set to

Required Equipment

Multimeter 1 and 2 = R

Multimeter 17 and

Multimeter 1 and

Resistance and 120 Hz)

Measuring at Connections

and case

ground

17 and case ground

2 and

18 and 17 = R 19 and 17 = R

Expected Value Potential Cause Corrective Action

2Ω R18Ω≤≤

0.2Ω<

(< 1nS)

∞

(< 1nS)

R1 and R2 should be stable

NO:

N5, E5, CD, ED:

R1R–

R1R–21500Ω≤

300Ω≤

• Open or Shorted Coil

• Moisture in terminal block

• Leaky electrode

• Process behind liner

• Leaky electrode

• Moisture in terminal block

• Unstable R1 or

values

confirm coated electrode

•Shorted electrode

• Electrode not in contact with process

• Empty Pipe

• Low conductivity

• Remove and replace flowtube

• Clean terminal block

•Remove flowtube

•Remove flowtube and dry

• Clean terminal block

• Confirm with flowtube coil test

• Remove coating from flowtube wall

• Use bulletnose electrodes

• Repeat measurement

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Figure 6-1. Flowtube Circuit Diagram

Rosemount 8742C

68.1k (not applicable for flowtubes with N0 hazardous certification approval option code)

68.1k

Flowtube Housing

STEP 6: UNINSTALLED FLOWTUBE TESTS

8712-0007E04A

An uninstalled flowtube can also be used for flowtube troubleshooting. To interpret the results, the hazardous location certification for the flowtube must be known. Applicable codes for the Rosemount 8705 are N0, N5, and KD. Applicable codes for the Rosemount 8707 are N0 and N5. Applicable codes for the Rosemount 8711 are N0, N5, E5, and CD.

A flowtube circuit diagram is provided in Figure 6-1. Take measurements from the terminal block and on the electrode head inside the flowtube. The measurement electrodes, 18 and 19, are on opposite sides in the inside diameter. If applicable, the third grounding electrode is in between the other two electrodes. On 8711 flowtubes, electrode 18 is near the flowtube junction box and electrode 19 is near the bottom of the flowtube (Figure 6-2). The different flowtube models will have slightly different resistance readings. Flanged flowtube resistance readings are in Table 6-2 while wafer flowtube resistance readings are in Table 6-3.

See “Safety Information” on page 4-1 for complete warning information.

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Rosemount 8742C

Figure 6-2. 45° Electrode Plane

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8711-8711F01A

To insure accuracy of resistance readings, zero out multimeter by shorting and touching the leads together. If any of these tests fail, refer to “Return of Materials” on page 1-3 or contact your Rosemount representative to interpret the results.

Table 6-2. Uninstalled Rosemount 8705/ 8707 Flanged Flowtube Tests

Hazardous Location Certifications

Measuring at Connections

18 and Electrode

19 and Electrode

17 and Grounding Electrode

17 and Ground Symbol

17 and 18 Open Open 17 and 19 Open Open 17 and 1 Open Open

(1) It is difficult to tell from visual inspection alone which electrode is wired to which number terminal in

the terminal block. Measure both electrodes. One electrode should result in an open reading, while the other electrode should be less than 275 .

(1)

Ω

N0 N5, KD

275≤Ω 275≤Ω

0.3≤Ω 0.3≤Ω

61kΩ R75k≤≤ Ω 61kΩ R75k≤≤ Ω

Table 6-3. Uninstalled Rosemount 8711 Wafer Flowtube Tests

Hazardous Location Certification

Measuring at Connections

18 and Electrode

19 and Electrode

17 and Grounding Electrode

17 and Grounding Symbol

17 and 18 Open Open 17 and 19 Open Open 17 and 1 Open Open

(1) Measure the electrode closest to the junction box (2) Measure the electrode farthest away from the junction box.

(1)

(2)

N0 N5, E5, CD

0.3≤Ω 275≤Ω

0.3≤Ω 0.3≤Ω

61kΩ R75k≤≤ Ω 61kΩ R75k≤≤ Ω

6-6

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Appendix A Reference Data

Rosemount 8742C Transmitter Specifications . . . . . . . .page A-1

Rosemount 8705 and 8707 Flowtubes Specifications . . page A-5

Rosemount 8711 Wafer Flowtube Specifications . . . . . .page A-11

Rosemount 8714D Specifications . . . . . . . . . . . . . . . . . . . page A-14

Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . .page A-15

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page A-22

ROSEMOUNT 8742C TRANSMITTER SPECIFICATIONS

Rosemount 8742C

Functional Specifications

Flowtube Compatibility

Compatible with Rosemount 8705, 8711, and 8721 flowtubes.

Conductivity Limits

Process liquid must have a conductivity of 5 microsiemens/cm (5 micromhos/cm) or greater for 8742C. Excludes the effects of interconnecting cable length in remote mount transmitter installations.

Flowtube Coil Resistance

25  maximum

Flow Rate Range

Capable of processing signals from fluids that are traveling between 0 and 40 ft/s (0 to 12 m/s) for both forward and reverse flow in all flowtube sizes.

Power Supply

90–250 V ac, 50–60 Hz, 15–50 V dc

www.rosemount.com

Page 72

Rosemount 8742C

Reference Manual

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August 2004

Supply Current Requirements

Units powered by 15-50 V dc power supply may draw up to 1 amp of current.

1.0

0.75

0.5

0.25

Supply Current (Amps)

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

Power Supply (Volts)

Installation Coordination

Installation (overvoltage) Category II

Power Consumption

10 watts maximum

Ambient Temperature Limits

Operating

–40 to 165 °F (–40 to 74 °C) without local operator interface –13 to 147 °F (–25 to 65 °C) with local operator interface

Storage

–40 to 185 °F (–40 to 85 °C)

Humidity Limits

0–100% RH to 150 °F (65 °C)

Enclosure Rating

NEMA 4X CSA Type 4X, IEC 60529, IP67 (transmitter), Pollution Degree 2

Output Signal

Manchester-encoded digital signal that conforms to IEC 1158-2 and ISA 50.02

A-2

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Rosemount 8742C

FOUNDATION Fieldbus Specifications

Schedule Entries

Seven (7)

Links

Twenty (20)

Virtual Communications Relationships (VCRs)

One (2) predefined (F6, F7) Nineteen (18) configurable (see Table A-1)

Table A-1. Block Information

Block Base Index Execution Time (Milliseconds)

Resource (RB) 300 —

Transducer (TB) 400 —

Analog Input (AI) 1,000 15

Proportional/Integral / Derivative (PID) 10,000 25

Intergrator 12,000 20

Reverse Flow

Detects and reports reverse flow

Software Lockout

A write-lock switch and software lockout are provided in the resource function block.

Turn - o n Time

30 minutes to rated accuracy from power up; 10 seconds communication from power interruption

Start-up Time

0.2 seconds from zero flow

Low Flow Cutoff

Adjustable between 0 and 1 ft/s. Below selected value, output is driven to the zero flow rate.

Overrange Capability

Signal output continues to 110% of upper range value setting, then remains constant. Messages are supplied to the fieldbus network.

Damping

Adjustable between 0 and 255 seconds

A-3

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Reference Manual

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August 2004

Performance Specifications

(System specifications are given using the unit at referenced conditions.)

Accuracy

Rosemount 8742C Transmitter with 8705 and 8721 Flowtubes

System accuracy is ±0.5% of rate from 1 to 40 ft/s (0.3 to 12 m/s); includes combined effects of linearity, hysteresis, repeatability, and calibration uncertainty; below 1.0 ft/s (0.3 m/s), the system has an accuracy of ±0.005 ft/s (0.0015 m/s).

Rosemount 8742C Transmitter with 8711 Flowtube

System accuracy is ±0.5% of rate from 3 to 40 ft/s (0.9 to 12 m/s); includes combined effects of linearity, hysteresis, repeatability, and calibration uncertainty; below 3 ft/s (0.9 m/s), the system has an accuracy of ±0.015 ft/s (0.005 m/s).

Vibration Effect

IEC 60770-1

Repeatability

±0.1% of reading

Response Time

0.2 seconds maximum response to step change in input

Stability

±0.1% of rate over six months

Ambient Temperature Effect

±0.25% of rate over operating temperature range

EMC Compliance

EN61326-1 1997 + A1/A2 3(Industrial) electromagnetic compatibility (EMC) for process and laboratory apparatus.

Transient Protection

The 8742C transmitter prevents damage to the flowmeter from transients compliant to:

IEC 6100 – 4-4 (for burst currents) IEC 6100 – 4-5 (for surge currents)

Mounting Position Effect

None when installed to ensure flowtube remains full

A-4

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Physical Specifications Materials of Construction (Transmitter)

Housing

Low-copper aluminum

Paint

Polyurethane

Cover Gasket

Rubber

Electrical Connections

Two ¾–14 NPT with number 8 screw terminal connections are provided for electrical wiring. PG13.5 and CM20 adapters are available. Screw terminals provided for all connections. Power wiring connected to transmitter only. Integrally mounted transmitters are factory wired to the flowtube.

Mounting

Integrally mounted transmitters do not require interconnecting cables. The local display and transmitter can be rotated in 90° increments. Remote mounted transmitters require only a single conduit connection to the flowtube.

Rosemount 8742C

ROSEMOUNT 8705 AND 8707 FLOWTUBES SPECIFICATIONS

Functional Specifications

Weight

Approximately 7 pounds (3.2 kg). Add 0.5 pounds (0.5 kg) for local display.

Service

Conductive liquids and slurries

Line Sizes

/2–36 inch (15–900 mm) for Rosemount 8705

3–36 inch (80–600 mm) for Rosemount 8707

Interchangeability

Rosemount 8705 Flowtubes are interchangeable with 8712D, 8732, and 8742C Transmitters. Rosemount 8707 High-Signal Flowtubes are interchangeable with 8712H High-Signal Transmitters. System accuracy is maintained regardless of line size or optional features. Each flowtube nameplate has a sixteen-digit calibration number that can be entered into a transmitter through the Local Operator Interface (LOI) or the HART Communicator on the 8712H and the 8732C. In a F environment, the 8742C can be configured using the DeltaV configuration tool or another F further calibration is necessary.

OUNDATION fieldbus configuration device. No

OUNDATION

™

fieldbus

™

fieldbus

Upper Range Limit

30 ft/s (10 m/s)

A-5

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August 2004

Process Temperature Limits

Teflon (PTFE) Lining

–20 to 350 °F (–29 to 177 °C)

Tefzel (ETFE) Lining

–20 to 300 °F (–29 to 149 °C)

PFA Lining

-20 to 350 °F (-29 to 177°C)

Polyurethane Lining

0 to 140 °F (–18 to 60 °C)

Neoprene Lining

0 to 185 °F (–18 to 85 °C)

Linatex Lining

0 to 158 °F (–18 to 70°C)

Ambient Temperature Limits

–30 to 150 °F (–34 to 65 °C)

Pressure Limits

See Table A-2 and Table A-4

Vacuum Limits

Teflon (PTFE) Lining

Full vacuum to 350 °F (177 °C) through 4-inch (100 mm) line sizes. Consult factory for vacuum applications with line sizes of 6 inches (150 mm) or larger.

All Other Standard Flowtube Lining Materials

Full vacuum to maximum material temperature limits for all available line sizes.

Submergence Protection

IP 68. Continuous to 30 feet (10 meters) Recommended with sealed cable glands

Conductivity Limits

Process liquid must have a conductivity of 5 microsiemens/cm (5 micromhos/cm) or greater for 8705. Process liquid must have a conductivity of 50 microsiemens/cm (50 micromhos/cm) for 8707 when used with 8712H, 5 microsiemens/cm when used with other transmitters. Excludes the effect of interconnecting cable length in remote mount transmitter installations.

A-6

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Rosemount 8742C

Table A-2. Temperature vs. Pressure Limits

Flowtube Temperature vs. Pressure Limits for ASME B16.5 Class Flanges (1/2- to 36-inch line sizes)

Flange Material Flange Rating

Class 150 285 psi 260 psi 230 psi 215 psi

Carbon Steel

304 Stainless Steel

(1) Liner temperature limits must also be considered. Polyurethane, Linatex, and Neoprene have temperature limits of 140°F, 158°F, and 185°F, respectively. (2) 30- and 36-inch AWWA C207 Table A-3 Class D rated to 150 psi at atmospheric temperature. (3) Option Code C6 (4) Option Code C7 (5) Option Code S6 (6) Option Code S7

Class 300 740 psi 675 psi 655 psi 645 psi Class 600 Class 600

Class 900 2220 psi

Class 150 275 psi 235 psi 205 psi 190 psi

Class 300 720 psi 600 psi 530 psi 500 psi Class 600 Class 600

Class 900 2160 psi

(3)

(4)

(5)

(6)

Table A-3. Temperature vs. Pressure Limits

Flowtube Temperature vs. Pressure Limits for AS2129 Table D and E Flanges (4- to 24-inch line sizes)

Flange Material Flange Rating

Carbon Steel

(1) Liner temperature limits must also be considered. Polyurethane, Linatex, and Neoprene have temperature limits of 140°F, 158°F, and 185°F, respectively.

D 101.6 psi 101.6 psi 101.6 psi 94.3 psi E 203.1 psi 203.1 psi 203.1 psi 188.6 psi

(1)

(2)

Pressure

@ -20 to 100 °F

(-29 to 38 °C)

1000 psi 800 psi 700 psi 650 psi 1480 psi NA NA NA

1000 psi 800 psi 700 psi 650 psi 1440 psi NA NA NA

(1)

@ -200 to 50 °F (-320 to 122 °C)

@ 200 °F

(93 °C)

@ 100 °F

(212 °C)

@ 300 °F

(149 °C)

Pressure

@ 150°F

(302 °C)

@ 350 °F

(177 °C)

@ 200 °F

(392 °C)

Table A-4. Temperature vs. Pressure Limits

Flowtube Temperature vs. Pressure Limits for DIN Flanges (15 to 600 mm line sizes)

Flange Material Flange Rating

PN 10 10 bar 10 bar 9.7 bar 9.5 bar

Carbon Steel

304 Stainless Steel

(1) Liner temperature limits must also be considered. Polyurethane, Linatex, and Neoprene have temperature limits of 140°F, 158°F, and 185°F, respectively.

PN 16 16 bar 16 bar 15.6 bar 15.3 bar PN 25 25 bar 25 bar 24.4 bar 24.0 bar PN 40 40 bar 40 bar 39.1 bar 38.5 bar PN 10 9.1 bar 7.5 bar 6.8 bar 6.5 bar PN 16 14.7 bar 12.1 bar 11 . 0 ba r 10.6 bar PN 25 23 bar 18.9 bar 17.2 bar 16.6 bar PN 40 36.8 bar 30.3 bar 27.5 bar 26.5 bar

(1)

@ -196 to 50 °C (-320 to 122 °F)

@ 100 °C

(212 °F)

Pressure

@ 150°C

(302 °F)

@ 175°C

(347 °F)

A-7

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Performance Specifications

(System specifications are given using the frequency output and with the unit at referenced conditions.)

Accuracy

Rosemount 8705 with 8712D, 8732C, or 8742C

±0.5% of rate from 1 to 30 ft/s (0.3 to 10 m/s). Includes combined effects of linearity, hysteresis, repeatability, and calibration uncertainty. Accuracy is ±0.005 ft/s (±0.0015 m/s) from low-flow cutoff to 1.0 ft/s (0.3 m/s).

Rosemount 8707 with 8712D/H, 8732C, or 8742C

±0.5% of rate from 3 to 30 ft/s (1 to 10 m/s). Include combined effects of linearity, hysteresis, repeatability and calibration uncertainty. Accuracy is ±0.015 ft/s (±0.0045 m/s) from low-flow cutoff to 3.0 ft/s (1 m/s).

Vibration Effect

IEC 60770-1

Mounting Position Effect

None when installed to ensure flowtube remains full

Physical Specifications Non-Wetted Materials

Flowtube

AISI Type 304 SST

Flanges

Carbon steel, AISI Type 304/304L SST, or Type 316/316L SST

Housing

Welded steel

Paint

Polyurethane

Process Wetted Materials

Lining

PFA, Teflon (PTFE), Tefzel (ETFE), polyurethane, neoprene, Linatex

Electrodes

316L SST, Hastelloy C-276, tantalum, 90% platinum-10% iridium, titanium

Process Connections

ASME B16.5 (ANSI) Class 150, Class 300, Class 600, or Class 900

0.5- to 30-inch (Class 150)

0.5- to 24-inch (Class 300)

0.5- to 10-inch (Class 600 derated to 1000 psi max) 1- to 8-inch (Full rated Class 600 and 900)

A-8

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Rosemount 8742C

AWWA C207 Table 3 Class D

30- and 36-inch

DIN PN 10, 16, 25, and 40

PN10: Not available for flange sizes from 15 to 150 mm PN16: Not available for flange sizes from 15 to 80 mm PN 25: Not available for flange sizes from 15 to 150 mm PN40: Available for all flange sizes

AS 2129 Table D and E

0.5- to 36 inch

AISI Type 304 SST Sanitary Tri-Clover

3-A-compliant quick disconnect ferrule-mounted to ASME B16.5 (ANSI) Class 150 flange; 0.5- to 3-inch.

Electrical Connections

Two ¾–14 NPT connections with number 8 screw terminals are provided in the terminal enclosure for electrical wiring.

Grounding Electrode

A grounding electrode is installed similarly to the measurement electrodes through the flowtube lining on 8705 flowtubes. It is available in all electrode materials.

Grounding Rings

Grounding rings are installed between the flange and the tube face on both ends of the flowtube. Single ground rings can be installed on either end of the flowtube. They have an I.D. slightly larger than the flowtube I.D. and an external tab to attach ground wiring. Grounding rings are available in 316L SST, Hastelloy-C, titanium, and tantalum.

Lining Protectors

Lining protectors are installed between the flange and the tube face on both ends of the flowtube. The leading edge of lining material is protected by the lining protector; lining protectors cannot be removed once they are installed. Lining protectors are available in 316L SST, Hastelloy-C, and titanium.

Dimensions

See Figure 2, Figure 3, and Figure 4 and Table A-7, Table A-8, and Table A-9.

Weight

See Table A-9 and Table A-10

A-9

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Rosemount 8742C

Table A-5. Flowtube Weight (ASME)

Flowtube Flange Rating

Nominal Line Size

(1) 30- and 36-inch AWWA C207 Table 2 Class D rated to 150 psi at atmospheric temperature.

(1)

Inches (mm)

½ (15) ½ (15)

1 (25) 1 (25)

1½ (40) 1½ (40)

2 (50) 2 (50)

3 (80) 3 (80)

4 (100) 4 (100)

6 (150) 6 (150)

8 (200) 8 (200)

10 (250) 10 (250)

12 (300) 12 (300)

14 (350) 16 (400)

18 (450) 20 (500)

24 (600) 150 PN 10 1,000 (454) 30 (750)

36 (900)

ASME B16.5 (ANSI) DIN

150 300

150 150

150 125

Reference Manual

00809-0100-4793, Rev CA

August 2004

Flowtube Weight

lb (kg)

PN 40 20 (9)

PN 40 22 (10)

PN 40 26 (12)

PN 40 40 (18)

PN 16 48 (22)

PN 16 81 (37)

PN 10 110 (50)

PN 10 220 (98)

PN 10 330 (150)

PN 10 PN 10

22 (10)

24 (11)

28 (13)

47 (21)

65 (30)

93 (42)

162 (74)

300 (136)

435 (197) 370 (168)

500 (227) 600 (272)

680 (308)

1,747 (792) 1,975 (898)

Table A-6. Flowtube weights (AS2129)

Nominal Line Size Inches (mm) AS2129 Flowtube Weight lb (kg)

4 (100) 4 (100)

6 (150) 6 (150)

8 (200) 8 (200)

10 (250) 10 (250)

12 (300) 12 (300)

14 (350) 14 (350)

16 (400) 16 (400)

18 (450) 18 (450)

20 (500) 20 (500)

24 (600) 24 (600)

A-10

33 (15) 37 (17)

66 (30) 71 (32)

86 (39) 88 (40)

187 (85) 201 (91)

273 (124) 284 (129)

293 (133) 317 (144)

386 (175) 430 (195)

516 (234) 569 (258)

569 (258) 626 (284)

855 (388) 974 (442)

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ROSEMOUNT 8711 WAFER FLOWTUBE SPECIFICATIONS

Rosemount 8742C

Functional Specifications

Service

Conductive liquids and slurries

Line Sizes

0.15- through 8-inch (4 through 200 mm)

Interchangeability

Rosemount 8711 Flowtubes are interchangeable with 8732 and 8742C Transmitters. System accuracy is maintained regardless of line size or optional features. Each flowtube nameplate has a sixteen-digit calibration number that can be entered into a transmitter through the Local Operator Interface (LOI) or the HART Communicator on the Rosemount 8712H and the 8732C. In a F using the DeltaV fieldbus configuration tool or another F configuration device. No further calibration is necessary.

Upper Range Limit

30 ft/s (10 m/s)

Process Temperature Limits

Tefzel (ETFE) Lining

–20 to 300 °F (–29 to 149 °C) for 0.5- through 8-inch (15–200 mm) line sizes

–20 to 200 °F (–29 to 93 °C) for 0.15- and 0.3-inch (4 and 8 mm) line sizes

OUNDATION fieldbus environment, the 8742C can be configured

OUNDATION fieldbus

Teflon (PTFE) Lining

-20 to 350 °F (-29 to 177 °C)

Ambient Temperature Limits

–30 to 150 °F (–34 to 65 °C)

Maximum Safe Working Pressure at 100 °F (38 °C)

Tefzel (ETFE) Lining

Full vacuum to 740 psi (5.1 MPa) for 0.5- through 8-inch (15 through 200 mm) flowtubes

285 psi (1.96 MPa) for 0.15- and 0.30-inch (4 and 8 mm) flowtubes

Teflon (PTFE) Lining

Full vacuum through 4-inch (100 mm) line sizes. Consult factory for vacuum applications with line sizes of 6 inches (150 mm) or larger.

Conductivity Limits

Process liquid must have a conductivity of 5 microsiemens/cm (5 micromhos/cm) or greater for 8711. Excludes the effect of interconnecting cable length in remote mount transmitter installations.

A-11

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August 2004

Performance Specifications

(System specifications are given using the frequency output and with the unit at referenced conditions.)

Accuracy

Rosemount 8711 with 8712D, 8732C, or 8742C Transmitters

±0.5% of rate from 3 to 30 ft/s (1 to 10 m/s) ±0.015 ft/s (0.0045 m/s) from low-flow cutoff to 3 ft/s (1 m/s)

Vibration Effect

IEC 60770-1

Mounting Position Effect

No effect when installed to ensure flowtube remains full

Physical Specifications Non-Wetted Materials

Flowtube

303 SST (ASTM A-743)

Coil Housing

Investment cast steel (ASTM A-27)

Paint

Polyurethane

Process-Wetted Materials

Lining

Tefzel (ETFE), Teflon (PTFE)

Electrodes

316L SST, Hastelloy C-276, tantalum, 90% platinum—10% iridium, titanium

Process Connections

Mounts between these Flange Configurations

ASME B16.5 (ANSI): Class 150, 300 DIN: PN 10 and 25 BS: 10 Table D, E, and F

A-12

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Rosemount 8742C

Studs, Nuts, and Washers

ASME B16.5 (ANSI)

0.15- through 1-inch (4 through 25 mm): 316 SST, ASTM A193, Grade B8M, Class 1 threaded mounting studs; ASTM A194, Grade 8M heavy hex nuts; SAE per ANSI B18.2.1, Type A, Series N flat washers.

1.5- through 8-inch (40 through 200 mm): CS, ASTM A193, Grade B7, Class 1 threaded mounting studs; ASTM A194, Grade 2H heavy hex nuts; SAE per ANSI B18.2.1, Type A, Series N flat washers; all items clear, chromate zinc-plated.

DIN

4 through 25 mm (0.15- through 1-inch): 316 SST ASTM A193, Grade B8M Class 1 threaded mounting studs; ASTM A194, Grade 8M, DIN 934 H=D, metric heavy hex nuts; 316 SST, A4, DIN 125 flat washers.

40 through 200 mm (1.5- through 8-inch): CS, ASTM A193, Grade B7 threaded mounting studs; ASTM A194, Grade 2H, DIN 934 H=D, metric heavy hex nuts; CS, DIN 125 flat washers; all items yellow zinc-plated.

Electrical Connections

Two ¾–14 NPT connections with number 8 screw terminals are provided in the terminal enclosure for electrical wiring.

(1)

Grounding Electrode

A grounding electrode is installed similarly to the measurement electrodes through the flowtube lining. It is available in all electrode materials.

Grounding Rings

Grounding rings are installed between the flange and the tube face on both ends of the flowtube. They have an I.D. slightly larger than the flowtube I.D. and an external tab to attach ground wiring. Grounding rings are available in 316L SST, Hastelloy C-276, titanium, and tantalum.

Dimensions and Weight

See Figure 5, Figure 6, and Table A-10

(1) 0.15 and 0.30 inch (4 and 80 mm) flowtubes mount between 1/2-inch flange.

A-13

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Rosemount 8742C

ROSEMOUNT 8714D SPECIFICATIONS

Reference Manual

00809-0100-4793, Rev CA

August 2004

Functional Specifications

Performance Specifications

Ambient Temperature Limits

Operating

–30 to 140 °F (–34 to 60 °C)

Storage

–40 to 140 °F (–40 to 60 °C)

Humidity Limits

0 to 95% relative humidity

Accuracy

±0.05% of rate at 30 ft/s at 25°C ±0.10% of rate at 10 ft/s and 3 ft/s

Warm-up Time

30 minutes

Ambient Temperature Effect

< 0.015% of rate per 10 °F (< 0.027% per 10 °C)

Humidity Effect

No effect from 0 to 60% relative humidity < 0.10% of rate from 60 to 90% relative humidity

Long-Term Stability

< 0.10% of rate shift in one year

Physical Specifications Electrical Connections

Electrical connections are compatible with 8712D or 8732C terminal blocks. Electrical connections are not compatible with 8712H terminal block.

Mounting

Any position is acceptable

Materials of Construction

Housing

Extruded aluminum

Covers

Stamped aluminum, silk-screened

Paint

Polyurethane

Weight

Approximately 3 lb (2 kg)

A-14

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DIMENSIONAL DRAWINGS

10.5

(267)

5.10

(130)

FIGURE 1. Rosemount 8742C Transmitter

7.49 (190)

6.48 (165)

1.94 (49)

3.00 (76)

LOI Cover

8.81

(224)

3.07 (78)

Rosemount 8742C

/4”-14 NPT Electrical

Conduit Connections

(2 places)

3.43 (87)

/4”-14 NPT

Flowtube Conduit

Connections

(2 places)

11.02 (280)

5.82

(148)

Note Dimensions in inches (millimeters)

8742-8742_06A, 8742_06B, 1002G01A

A-15

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Rosemount 8742C

FIGURE 2. Rosemount 8705 and 8707 Flowtubes, Typical of 0.5- through 4-inch (15 through 100 mm) Line Sizes

4.02

(102)

2.00

(50.8)

5.00

(127)

August 2004

2.6

(66)

/4-14 NPT

Conduit

Connection

Relief Valve

Notes Dimensions are in inches (millimeters) See Table A-8 and Table A-9 for variable dimensions W1 Housing Configuration (Sealed, welded housing with pressure relief valve)

1.8

(46)

FIGURE 3. Rosemount 8705 and 8707 Flowtubes, Typical of 6- through 36-inch (150 through 900 mm) Line Sizes

4.02

(102)

2.6

(66)

2.00 (51)

1.8

(46)

5.00

(127)

2.66 (66)

2.6

(66)

8705-1002A05A, 1002B05A

A-16

W3 Housing

Configuration

Notes Dimensions are in inches (millimeters) See Table A-8 and Table A-9 for variable dimensions W3 Housing Configuration (Sealed welded housing with separate electrode compartments)

8705-1002A06A, 1002B06A

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FIGURE 4. Rosemount 8705 Sanitary Flowtubes, Typical of 1/2- through 3-inch (15 through 86 mm) Line Sizes

(102)

2.00

(50.8)

2.6

(66)

4.02

1.8

(46)

Rosemount 8742C

5.00

(127)

2.6

(66)

/4-14 NPT

Conduit

Connection

Notes Dimensions are in inches (millimeters) See Table A-9 for available dimensions W0 Housing Configuration (Sealed welded housing)

Table A-7. Sanitary Rosemount 8705 Flowtube Dimensions in inches (millimeters)

Line Size and Flange Rating

0.5–150 lb. 1.00 (25) 1.75 (44) 8.88 (226) 13.78 (350) 1–150 lb. 1.50 (40) 2.13 (54) 8.88 (226) 13.78 (350)

1.5–150 lb. 2.00 (50) 2.50 (64) 9.50 (242) 13.78 (350) 2–150 lb. 3.00 (80) 3.00 (76) 9.50 (242) 13.78 (350) 3–150 lb. 4.00 (100) 3.75 (95) 12.50 (318) 13.78 (350)

Dimensions with ASME B16.5 (ANSI) Flanges and Tri-Clamp Adapters.

Nominal Tri-Clamp

Diameter

Process Flange Rad. “B” Body Height “C” Max Overall Flowtube Length “L”

Grounding

Clamp

8705-1002A05A, 1002B05D

A-17

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August 2004

Table A-8. Rosemount 8705 and 8707 Dimensions in Inches (Millimeters) (Dimensions with ASME B16.5 (ANSI) Flanges)

Line Size

Flange Rating

(1) AS2129 Table D and E flange dimensions match ANSI 150# dimensions. (2) 30- and 36-inch AWWA C207 Table 2 Class D rated to 150 psi at 150 °F. (3) When 2 grounding rings are specified, add 0.25 inch (6.35 mm) for 0.50- through 14-inch (15 through 350 mm) flowtubes, add 0.50 inch (12.7 mm) for

(1)

Refer to Dimensional Drawings, Figure 2, Figure 3, and Figure 4

(2)

and

0.5–150

0.5–300

0.5–600 1–150

1–300 1–600 1–900

1.5–150

1.5 –300

1.5–600

1.5–900 2–150 2–300 2–600 2–900 3–150 3–300 3–600 3–900 4–150 4–300 4–600 4–900 6–150 6–300 6–600 6–900 8–150 8–300 8–600 8–900

10–150 10–300 10–600 12–150 12–300 14–150 14–300 16–150 16–300 18–150 18–300 20–150 20–300 24–150 24–300

30 36

16-inch (400 mm) and larger. When lining protectors are specified, add 0.25 inch (6.35 mm) for ½- through 12-inch (15 through 300 mm) flowtubes, add

0.50 inch (12.7 mm) for 14- through 36-inch (350 through 900 mm) flowtubes.

Body Height

“H”

6.75 (171)

7.10 (180)

8.10 (206)

8.45 (215)

9.45 (240)

10.42 (265)

11.78 (299)

12.86 (327)

13.92 (354)

14.93 (379)

16.19 (411)

17.20 (437)

19.48 (495)

22.23 (565)

26.10 (663)

Liner Face

Diameter

“A”

1.38 (35)

2.00 (51)

1.62 (41)

2.88 (73)

2.50 (64)

3.62 (92)

3.25 (83)

5.00 (127)

4.63 (118)

6.19 (157)

5.81 (148)

8.50 (216)

8.00 (203)

10.62 (270)

10.00 (254)

12.75 (324)

15.00 (381)

16.25 (413)

18.50 (470)

21.00 (533)

23.00 (584)

27.25 (692)

33.80 (859)

40.27 (1023)

Overall Flowtube

Length

(3)

“L”

7.88 (200)

8.67 (220)

7.88 (200)

8.67 (220)

9.66 (245)

7.88 (200)

8.63 (219)

9.52 (242)

7.88 (200)

8.78 (223)

10.26 (261)

7.88 (200)

8.63 (219)

12.4 (315)

12.8 (326)

9.84 (250)

10.88 (276)

12.83 (326)

13.89 (353)

11.81 (300)

13.06 (332)

14.23 (361)

15.51 (394)

13.78 (350)

15.60 (396)

16.72 (428)

18.47 (469)

15.00 (381)

17.13 (435)

19.54 (496)

18.00 (457)

20.14 (512)

21.00 (533)

23.25 (591)

24.00 (610)

26.25 (667)

27.00 (686)

30.12 (765)

30.00 (762)

33.25 (845)

36.00 (914)

39.64 (1007)

37.25 (946)

40.88 (1038)

Flange Diameter

“D”

3.50 (89)

3.75 (95)

4.25 (108)

4.88 (124)

5.88 (149)

5.00 (127)

6.12 (155)

7.00 (178)

6.00 (152)

6.50 (165)

8.50 (216)

7.50 (191)

8.25 (210)

9.50 (241)

9.00 (229)

10.00 (254)

10.75 (273)

11.50 (292)

11.00 (279)

12.50 (318)

14.00 (356)

15.00 (381)

13.50 (343)

15.00 (381)

16.50 (419)

18.50 (470)

16.00 (406)

17.50 (444)

20.00 (508)

19.00 (483)

20.50 (52)

21.00 (533)

23.00 (584)

23.50 (597)

25.50 (648)

25.00 (635)

28.00 (711)

27.50 (698)

30.50 (774)

32.00 (813)

36.00 (914)

38.75 (984)

46.00 (1168)

Liner Thickness Inside Diameter

0.09 (2.3)

0.13 (3.3)

0.12 (3.1)

0.13 (3.3)

0.12 (3.1)

0.13 (3.3)

0.15 (3.8)

0.13 (3.3)

0.15 (3.8)

0.13 (3.3)

0.19 (4.8)

0.16 (4.1)

0.19 (4.8)

0.17 (4.3)

0.26 (6.5)

0.26 (6.7)

0.19 (4.8)

0.49 (12.5)

0.91 (23)

0.80 (20)

1.44 (37)

1.36 (35)

1.25 (32)

1.91 (49)

1.82 (46)

1.69 (43)

2.96 (75)

2.76 (70)

2.37 (60)

3.96 (101)

3.72 (95)

3.37 (86)

5.98 (152)

5.69 (144)

4.86 (123)

7.94 (202)

7.64 (194)

6.65 (169)

9.87 (251)

9.48 (241)

9.21 (234)

11. 87 (3 01)

11. 48 (2 92)

13.16 (334)

12.79 (325)

15.12 (384)

14.75 (375)

17.09 (434)

16.35 (415)

18.96 (482)

18.21 (463)

22.94 (583)

22.06 (560)

28.75 (730)

29.08 (739)

A-18

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Reference Manual

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Table A-9. Rosemount 8705 Flowtube Dimensions with DIN Flanges in Millimeters (Inches)

Rating

(1)

Body Height

“H”

Liner Face

Diameter

“A”

Overall Flowtube

Length “L”

(2)

Flange Diameter

Line Size

and Flange

15 mm PN 10–40 171 (6.75) 45 (1.77) 200 (7.88) 95 (3.74) 2.3 (0.09) 12.5 (.49) 25 mm PN 10–40 171 (6.75) 68 (2.68) 200 (7.88) 115 (4.53) 2.3 (0.09) 23.1 (.91) 40 mm PN 10–40 180 (7.10) 88 (3.46) 200 (7.87) 150 (5.91) 3.1 (0.12) 37 (1.44) 50 mm PN 10–40 180 (7.10) 102 (4.02) 200 (7.87) 165 (6.50) 3.1 (0.12) 49 (1.91)

80 mm PN 10–40 206 (8.10) 138 (5.43) 200 (7.87) 200 (7.87) 3.8 (0.15) 75.2 (2.96) 100 mm PN 10–16 215 (8.45) 162 (6.38) 250 (9.84) 220 (8.66) 3.8 (0.15) 100.6 (3.96) 100 mm PN 25–40 215 (8.45) 162 (6.38) 250 (9.84) 235 (9.25) 3.8 (0.15) 100.6 (3.96)

150 mm PN 10 240 (9.45) 212 (8.35) 300 (11.81) 285 (11.22) 4.7 (0.19) 152 (5.98) 150 mm PN 16 240 (9.45) 215 (8.46) 300 (11.81) 220 (8.66) 4.7 (0.19) 152 (5.98) 150 mm PN 25 240 (9.45) 218 (8.58) 300 (11.81) 300 (11.81) 4.7 (0.19) 152 (5.98) 150 mm PN 40 240 (9.45) 218 (8.58) 332 (13.07) 300 (11.81) 4.7 (0.19) 144 (5.67) 200 mm PN 10 265 (10.42) 268 (10.55) 350 (13.78) 240 (13.39) 4.9 (0.19) 202 (7.94) 200 mm PN 16 265 (10.42) 268 (10.55) 350 (13.78) 340 (13.39) 4.9 (0.19) 202 (7.94) 200 mm PN 25 265 (10.42) 278 (10.94) 350 (13.78) 360 (14.17) 4.9 (0.19) 202 (7.94) 200 mm PN 40 265 (10.42) 285 (11.22) 396 (15.60) 375 (14.76) 4.3 (0.17) 194 (7.64) 250 mm PN 10 299 (11.78) 320 (12.60) 381 (15.00) 395 (15.55) 6.6 (0.26) 251 (9.88) 250 mm PN 16 299 (11.78) 320 (12.60) 381 (15.00) 405 (15.94) 6.6 (0.26) 251 (9.88) 250 mm PN 25 299 (11.78) 335 (13.19) 381 (15.00) 425 (16.73) 6.6 (0.26) 251 (9.88) 250 mm PN 40 299 (11.78) 345 (13.58) 435 (17.13) 450 (17.72) 6.6 (0.26) 240 (9.45) 300 mm PN 10 327 (12.86) 370 (14.57) 457 (18.00) 445 (17.52) 6.6 (0.26) 302 (11.87) 300 mm PN 16 327 (12.86) 378 (14.88) 457 (18.00) 460 (18.11) 6.6 (0.26) 302 (11.87) 300 mm PN 25 327 (12.86) 395 (15.55) 457 (18.00) 485 (19.09) 6.6 (0.26) 302 (11.87) 300 mm PN 40 327 (12.86) 410 (16.14) 512 (20.14) 515 (20.28) 6.6 (0.26) 292 (11.48) 350 mm PN 10 354 (13.92) 430 (16.93) 534 (21.03) 505 (19.88) 7.4 (0.19) 334 (13.16) 350 mm PN 16 354 (13.92) 438 (17.24) 534 (21.03) 520 (20.47) 7.4 (0.19) 334 (13.16) 350 mm PN 25 354 (13.92) 450 (17.72) 534 (21.03) 555 (21.85) 7.4 (0.19) 334 (13.16) 350 mm PN 40 354 (13.92) 465 (18.31) 591 (23.25) 580 (22.83) 7.4 (0.19) 12.79 (325) 400 mm PN 10 379 (14.93) 482 (18.98) 610 (24.00) 565 (22.24) 7.4 (0.19) 384 (15.12) 400 mm PN 16 379 (14.93) 490 (19.29) 610 (24.00) 580 (22.83) 7.4 (0.19) 384 (15.12) 400 mm PN 25 379 (14.93) 505 (19.88) 610 (24.00) 620 (24.41) 7.4 (0.19) 384 (15.12) 400 mm PN 40 379 (14.93) 535 (21.06) 667 (26.25) 660 (25.98) 7.4 (0.19) 375 (14.75) 500 mm PN 10 437 (17.20) 585 (23.03) 762 (30.00) 670 (26.38) 7.4 (0.19) 482 (18.96) 500 mm PN 16 437 (17.20) 610 (24.02) 762 (30.00) 715 (28.15) 7.4 (0.19) 482 (18.96) 500 mm PN 25 437 (17.20) 615 (24.21) 762 (30.00) 730 (28.74) 7.4 (0.19) 482 (18.96) 500 mm PN 40 437 (17.20) 615 (24.21) 845 (33.25) 755 (29.72) 7.4 (0.19) 463 (18.21) 600 mm PN 10 495 (19.48) 685 (26.97) 914 (36.00) 780 (30.71) 7.4 (0.19) 583 (22.94) 600 mm PN 16 495 (19.48) 725 (28.54) 914 (36.00) 840 (33.07)) 7.4 (0.19) 583 (22.94) 600 mm PN 25 495 (19.48) 720 (28.35) 914 (36.00) 845 (33.27) 7.4 (0.19) 581 (22.87)

Dimensions with DIN Flanges

(1) Consult factory for larger line sizes. (2) When 2 grounding rings are specified, add 6.35 mm (0.25 in.) for 15 mm through 350 mm (½- through 14 in.) flowtubes or 12.7 mm (0.50 in.) for 400 mm

(16 in.) and larger. When lining protectors are specified, add 6.35 mm (0.25 in.) for 15 mm through 300 mm (½- through 12-in.) flowtubes, 12.7 mm (0.50 in.) for 350 mm through 900 mm (14- through 36-in.) flowtubes.

Rosemount 8742C

“D”

Liner Thickness Inside Diameter

A-19

Page 90

Rosemount 8742C

FIGURE 5. Rosemount 8711 Dimensional Drawings (0.15-inch through 1-inch line sizes)

4.02 (102)

1.8

2.6

(46)

(66)

¾–14 NPT

Conduit

Connection

(2 places)

NOTE Dimensions are in inches (millimeters) See Table A-10 for variable dimensions

Reference Manual

00809-0100-4793, Rev CA

August 2004

5.00

(127)

Grounding

B”

Flow

Clamp

8711-1012B03B, 1012A03B

FIGURE 6. Rosemount 8711 Dimensional Drawings (1.5-inch through 8-inch line sizes)

4.02 (102)

1.8

2.6 (46)

(66)

¾–14 NPT

Conduit

Connection

(2 places)

NOTE Dimensions are in inches (millimeters) See Table A-10 for variable

5.00

(127)

Flow

Grounding

Clamp

8711-1012B04B, 1012A04B

A-20

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Table A-10. Rosemount 8711 Flowtube Dimensions and Weight

Nominal

Line Size

Inches (mm)

(1)

0.15

(1)

0.30

0.5 1

1.5 2 3 4 6 8

(1) 0.15 and 0.30 inch (4 and 8 mm) flowtubes mount between ½-inch (13 mm) flange.

(4) (8)

(15) (25) (40) (50) (80)

(100) (150)

(200)

“A” Max. “B” “C”

4.00

4.31

4.42

4.64

5.26

5.87

6.97

8.00

Flowtube Housing Dimensions

(102) (102)

(102) (109)

(112)

(118) (134) (149) (177)

(2003)

5.44

6.06

7.41

7.94

9.19

10.41

12.60

14.66

(138) (138)

(138) (154) (188) (202) (233) (264)

(320) (372)

3.56

4.50

3.28

3.91

5.16

6.38

8.56

10.63

FIGURE 7. Rosemount 8714D Calibration Standard

2.69

(68.3)

(90) (90)

(90)

(114)

(83)

(99) (131) (162) (217) (270)

Rosemount 8742C

Flowtube Length

“D”

2.17

2.73

3.26

4.68

5.88

6.87

8.86

(55) (55)

(55) (55) (69) (83)

(119)

(149) (174)

(225)

Inside Diameter

.150 .300

.593 .970

1.50

1.92

2.79

3.70

5.825

7.875

(4) (7)

(15) (24) (38) (50) (76) (99)

(148) (200)3560

Weight

lb (kg)

4 4

4 5 5

7 13 22

(2) (2)

(2) (2) (2) (3) (6)

(10) (16)

(27)

7.19

(182.6)

Note: The Rosemount 8714D is shipped with both the 8712D and 8732C Connector Typ es

4.13

(104.9)

Rosemount 8732C Connector Type

Rosemount 8712D Connector Type

8714-8714A

A-21

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Reference Manual

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Rosemount 8742C

ORDERING INFORMATION

Rosemount 8742C

Model Product Description Availability

8742C Magnetic Flowmeter Transmitter with FOUNDATION fieldbus (flowtube ordered separately) •

Code Transmitter Output

F FOUNDATION fieldbus protocol, comes with standard Analog Input Integrator Function block and

Backup LAS

Code Power Supply Voltage

AC 90–250 V ac, 50–60 Hz • DC 15-50 V dc •

Code Product Certifications

N0 Factory Mutual (FM) Class I, Division 2, Class II/III Division 1, approval for nonflammable fluids;

Canadian Standards Association (CSA) Class I, Division 2 Approval

CE Marking; N5 Factory Mutual (FM) Class I, Division 2, Class II/III Division 1, approval for flammable fluids • E1 EEx de IIB + H2 T6, Hydrogen •

(1)

ED ATEX EEx d IIB T6, Flame-proof approval • K0 Factory Mutual (FM) Class I, Division 2, Class II/III Division 1, approval and

K1 ATEX EEx de [ia] IIB + H2 T6

(1)

KD ATEX EEx d [ia] IIB T6, Flame-proof approval with intrinsically safe Fieldbus output and FISCO compliant •

Code Options

A01 Proportional/Integral/Derivative (PID) function blocks • D01 Product and process diagnostics: grounding/wiring diagnostic, electrode fault diagnostic,

D11 Product diagnostic: grounding/wiring diagnostic and electrode fault diagnostic • D21 Process diagnostic: high process noise detection •

B4 Remote Mount for 2” Pipe Mount Bracket (transmitter junction box and mounting bracket included) C1 Custom Configuration (completed configuration data sheet (CDS) required with order) • D1 High Accuracy Calibration [0.25% of rate from 3 to 30 ft/s (0.9 to 10m/s)] matched flowtube • DT Heavy Duty Tagging •

J1 CM 20 Conduit Adapter • J2 PG 13.5 Conduit Adapter •

M5 Local Display •

(2)

Factory Mutual (FM) Class I, Division 1, Class II/III Division 1, explosion proof approval •

Canadian Standards Association (CSA) Class 1, Division 2,

Class II/III Division 1 with intrinsically safe fieldbus output

Hydrogen gas flameproof approval with intrinsically safe fieldbus output and FISCO compliant

Factory Mutual (FM) Class I, Division 1, Explosion Proof with intrinsically safe Fieldbus output •

PlantWeb Software Functions •

and high process noise detection

Transmitter Options •

(1)

Conduit Electrical Connector

M12, 4-pin, Male Connector (eurofast®)

A size Mini, 4-pin, Male Connector (minifast®)

Continued on Next Page

August 2004

•

A-22

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Reference Manual

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Code Quick Installation Guide (QIG) Language Options (Default is English)

YA Danish QIG • YD Dutch QIG • YF French QIG • YG German QIG • YH Finnish QIG

YI Italian QIG • YN Norwegian QIG • YP Portuguese QIG • YS Spanish QIG

YW Swedish QIG •

Typical Model Number: 8742C F AC N 0 A 0 1

(1) Only available with Rosemount 8711 Integral Mount flowtube (2) Not available with certain hazardous location certifications. Contact a Rosemount representative for details.

Rosemount 8742C

A-23

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Reference Manual

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Rosemount 8742C

August 2004

Rosemount 8705

Code Product Description Availability

8705 Magnetic Flowmeter Flowtube •

Code Lining Material

A PFA • T Te fl on (PTFE) • F Te fz el (ETFE) • P Polyurethane •

N Neoprene •

L Linatex natural rubber •

Other lining materials available upon request. Consult factory. For availability by Line Size; see chart below •

Code Electrode Material / Electrode Type

Two Measurement Electrodes

SA 316L Stainless Steel •

HA Hastelloy C-276 •

TA Tantalum • PA 90% Platinum—10% Iridium • NA Titanium •

Two Measurement Electrodes + Third Grounding Electrode (Not available with W3 on electrode housing configuration on 8” (200 mm) and under line sizes.)

SE 316L Stainless Steel • HE Hastelloy C-276 • TE Tantalum • PE 90% Platinum—10% Iridium • NE Titanium •

Two Bulletnose Measurement Electrodes (Available in 2-inch (50 mm) and larger sizes only)

SB 316L Stainless Steel • HB Hastelloy C-276 •

Two Removable Measurement Electrodes (Available in 2-inch (50 mm) and larger sizes only); requires W3 option

SR 316L Stainless Steel • HR Hastelloy C-276 •

Other electrode materials and types available upon request. Consult factory.

Lining Material (from above)

Code Line Size Code A Code T Code F Code P

005 ½ inch (15 mm) NA • • NA NA 010 1 inch (25 mm) • • • • • 015 1½ inch (40 mm) • • • • • 020 2 inch (50 mm) • • • • • 030 3 inch (80 mm) • • • • • 040 4 inch (100 mm) • • • • • 060 6 inch (150 mm) • • • • • 080 8 inch (200 mm) • • • • • 100 10 inch (250 mm) • • • • • 120 12 inch (300 mm) • • • • • 140 14 inch (350 mm) NA • • • • 160 16 inch (400 mm) NA • • • • 180 18 inch (450 mm) NA • NA • • 200 20 inch (500 mm) NA • NA • • 240 24 inch (600 mm) NA • NA • • 300 30 inch (750 mm) NA • NA • • 360 36 inch (900 mm) NA • NA • •

Continued on Next Page

N, and L

Code

A-24

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Code Flange Material, Type, and Rating Availability

C1 Carbon Steel, ASME B16.5 (ANSI) Class 150 (30- and 36-inch AWWA C207 Table 3 Class D Flat Face) • C2 Carbon Steel, MSS SP44 Class 150 (30-inch [750 mm] only) • C3 Carbon Steel, ASME B16.5 (ANSI) Class 300 • C6 Carbon Steel, ASME B16.5 (ANSI) Class 600

(maximum pressure: 1000 psig; available in 0.5- through 10-inch [15 through 250 mm])

C7 Carbon Steel, ASME B16.5 (ANSI) Class 600

(with lining material codes P, N, and L only; available in 1- through 8-inch [25 through 200 mm])

C9 Carbon Steel, ASME B16.5 (ANSI) Class 900

(with lining material codes, P, N, L only, available in 1- through 8- [25 through 200mm])

S1 304 Stainless Steel, ASME B16.5 (ANSI) Class 150

(30- and 36-inch AWWA C207 Table 3 Class D Flat Face) S2 304 Stainless Steel, MSS SP44 Class 150 (30- through 36-inch [750 through 900 mm] only) • S3 304 Stainless Steel, ASME B16.5 (ANSI) Class 300 • S6 304 Stainless Steel, ASME B16.5 (ANSI) Class 600

(maximum pressure: 1000 psig; available in 0.5- through 10-inch [15 through 250 mm]) S7 304 Stainless Steel, ASME B16.5 (ANSI) Class 600

(lining material codes P, N, and L only; available in 1- through 8-inch [25 through 200 mm]) S9 304 Stainless Steel, ASME B16.5 (ANSI) Class 900

(with lining material codes, P, N, L only, available in 1- through 8- [25 through 200mm]) P1 316 Stainless Steel, ASME B16.5 (ANSI) Class 150

/2- and 24-inch AWWA C207 Table 2 Class D Flat Face), pipe and flange

( P3 316 Stainless Steel, ASME B16.5 (ANSI) Class 300, pipe and flange • CD Carbon Steel, DIN PN 10 (not available for flange sizes 15 to 150 mm) • CE Carbon Steel, DIN PN 16 (not available for flange sizes 15 to 80 mm) • CF Carbon Steel, DIN PN 25 (not available for flange sizes 15 to 150 mm) • CH Carbon Steel, DIN PN 40 (not available for flange sizes 750 to 900 mm) • CK Carbon Steel, AS2129 Table D (available flange sizes 15 to 900 mm) CL Carbon Steel, AS2129 Table E (available flange sizes 15 to 900 mm) SD Stainless Steel, DIN PN 10 (not available for flange sizes 15 to 150 mm) • SE Stainless Steel, DIN PN 16 (not available for flange sizes 15 to 80 mm) • SF Stainless Steel, DIN PN 25 (not available for flange sizes 15 to 150 mm) • SH Stainless Steel, DIN PN 40 (not available for flange sizes 750 to 900 mm) •

Other flange materials, types, and ratings available upon request. Consult factory.

Code Electrode Housing Configuration

W0 Sealed, welded housing • W1 Sealed, welded housing with pressure relief • W3 Sealed, welded housing with separate electrode compartments •

Code Product Certifications

N0 Factory Mutual (FM) Class I, Division 2 Approval for nonflammable fluids;

Canadian Standards Association (CSA) Class I, Division 2 Approval,

CE Marking N5 Factory Mutual (FM) Class I, Division 2 Approval for flammable fluids •

(5)

ATEX EEx e ia IIC T3...T6, Increased Safety Approval (with intrinsically safe electrode) • KD ATEX EEx e ia IIC T3...T6, Increased Safety Approval (with intrinsically safe electrode) • N1 ATEX EEx nA [L] IIC Type n Approval •

(1)

(2)

(2) (3)

(1)

(2)

(2) (3)

(4)

Continued on Next Page

Rosemount 8742C

•

A-25

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Rosemount 8742C

Reference Manual

00809-0100-4793, Rev CA

August 2004

Code Options Continued Availability

Optional Grounding Rings

G1 316L SST Grounding Rings • G2 Hastelloy C-276 Grounding Rings (0.5- through 12-inch (15 through 300 mm) flowtube line sizes) • G3 Titanium Grounding Rings (0.5- through 12-inch (15 through 300 mm) flowtube line sizes) • G4 Tantalum Grounding Rings (0.5- through 8-inch (15 through 200 mm) flowtube line sizes) • G5 Single 316L SST Grounding Ring • G6 Single Hastelloy C-276 Grounding Ring (0.5- through 12-inch (15 through 300 mm) flowtube line sizes) • G7 Single Titanium Grounding Ring (0.5- through 12-inch (15 through 300 mm) flowtube line sizes) • G8 Single Tantalum Grounding Ring (0.5- through 8-inch (15 through 200 mm) flowtube line sizes) •

Optional Lining Protectors

L1 316L SST Lining Protectors • L2 Hastelloy C-276 Lining Protectors (0.5- to 12-inch (15 to 300 mm) flowtube line sizes) • L3 Titanium Lining Protectors (0.5- to 12-inch (15 to 300 mm) flowtube line sizes) •

Optional Sanitary Connections

A3 Sanitary 3-A (0.5- to 3-inch (15 to 80 mm) sizes only);

ASME B16.5 (ANSI) Class 150 to Tri-Clamp Adapter A4 Sanitary 3-A (2.5-inch (64 mm) sizes only); ASME B16.5 (ANSI) Class 150 to Tri-Clamp Adapter • A5 Cherry Burrell Sanitary I-line (0.5- to 3-inch (15 to 80 mm) sizes only);

ASME B16.5 (ANSI) Class 150 to I-line Adapter A6 Cherry Burrell Sanitary I-line (2.5-inch (64 mm) sizes only);

ASME B16.5 (ANSI) Class 150 to I-Line Adapter

(6)

(7)

•

Continued on Next Page

A-26

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Code Options Continued

Other Options

B3 Integral Mount with Rosemount 8732C/8742C Transmitter • D1 High Accuracy Calibration [0.25% of rate from 3-30 ft/s (0.9-10 m/s)]

matched flowtube and transmitter system DT Heavy Duty Tagging •

DW NSF Drinking Water Certification 24 inch (600mm) (0.5- to 24-inch [15 to 600 mm] sizes only)

PTFE Teflon or ETFE liners (0.5- through 24-inch [15 through 600mm]),

SS electrode material

(9)

H1 Rosemount 8701 flowtube lay length (available for 0.5- to 12-inch (15 to 300 mm) line sizes);

spool piece or spacer: ASME B16.5 (ANSI) Class 150 or Class 300 flange and 304 stainless steel pipe H2 Rosemount 8701 Flowtube lay length (available for 0.5- to 16-inch (15-400 mm) line sizes.) • H5 Foxboro® Model 2800 lay length (available for 3.0 to 18 inch (80 to 450mm line sizes)) spool piece: ASME

B16.5 (ANSI) Class 150 flange and 304 stainless steel pipe. H7 ABB Fischer & Porter® Model CopaX and MagX lay length (available for 0.5 to 12in (15 to 3000 mm line

sizes)) spool piece: ASME B16.5 (ANSI) Class 150 flange and 304 stainless steel pipe.

J1 CM20 Conduit Adapter • J2 PG13.5 Conduit Adapter •

Q4 Inspection Certificate-Calibration Data, ISO 10474 3.1B, (Flow Cal., 1-10ft/s [0.3-3 m/s]) •

(11)

Hydrostatic Testing Certification (place on sales order, not on model string) • Q8 Material Traceability Certificate per DIN 3.1 B • Q9 Material Traceability Certificate (electrodes only) per DIN 3.1B 337 •

(10) (11)

Q15

NACE Certificate •

Q66 Welding Procedure Qualification Record Documentation • Q67 Welder Performance Qualification Record Documentation •

(12)

Q68

Welding Procedure Specification Documentation •

Q70 Inspection Certificate Weld Examination, ISO 10474 3.1B (½- to 12-inch [15-300 mm], 14- to 18-inch

[350-450 mm], and 20- to 36-inch [500-900 mm] flowtube line sizes only – see pricing below)

– 0.5- to 12-inch [15-300 mm] flowtube line sizes – 14- to 18-inch [350-450 mm] flowtube line sizes • – 20- to 36-inch [500-900 mm] flow tube line sizes

Typical Model Number: 8705 T SA 040 C1 W0 N0

(1) Electrode options limited to two measurement electrodes or two measurement electrodes + third grounding electrode. (2) Electrode options limited to two measurement electrodes or two measurement electrodes only. (3) Lining Protectors not available. (4) Option code limited to Liner material T, P, or F; cannot be ordered with ground rings, lining protectors AX or HX options. (5) For use with E1 / K1 transmitter. (6) Grounding Rings and Lining Protectors provide the same fluid grounding function. Lining Protectors available in Teflon (PTFE) and Tefzel (ETFE) only. (7) Sealed, welded housing (Option Code W0 or W1) required. Only available with Teflon (PTFE) lining material (Option Code T) and 316L Stainless Steel,

Hastelloy C-276, and 90% Platinum-10% Iridium electrode material (Option Codes S, H, and P). Not available with integral mount Rosemount 8712

transmitter. Sanitary connection codes A4 and A6 only available in line size code 020. (8) Option Code must be ordered for both flowtube and transmitter. (9) Pending approval, consult factory for availability. (10) Order as a separate line item. (11) Order by placing model code in manufacturing notes on sales order. This code does not belong in the model string. (12) Order as a separate line item, this code does not belong in the model string.

(8)

Rosemount 8742C

•

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Reference Manual

00809-0100-4793, Rev CA

Rosemount 8742C

August 2004

Rosemount 8707

Code Product Description Availability

8707 High-Signal Magnetic Flowmeter Flowtube •

Code Lining Material

A PFA T Tefl on (PTFE) • F Tefz el (ETFE) • P Polyurethane • N Neoprene • L Linatex natural rubber •

Other lining materials available upon request. Consult factory. For availability by Line Size, see chart below. •

Code Electrode Material / Electrode Type

SA 316L Stainless Steel •

HA Hastelloy C-276 •

TA Tantalum •

PA 90% Platinum —10% Iridium •

NA Titanium •

SE 316L Stainless Steel •

HE Hastelloy C-276 •

TE Tantalum •

PE 90% Platinum —10% Iridium •

NE Titanium •

SB 316L Stainless Steel •

HB Hastelloy C-276 •

Code Line Size Code A Code T Code F

030 3 inch (80 mm) • • • • 040 4 inch (100 mm) • • • • 060 6 inch (150 mm) • • • • 080 8 inch (200 mm) • • • • 100 10 inch (250 mm) • • • • 120 12 inch (300 mm) • • • • 140 14 inch (350 mm) NA • • • 160 16 inch (400 mm) NA • • • 180 18 inch (450 mm) NA • NA • 200 20 inch (500 mm) NA • NA • 240 24 inch (600 mm) NA • NA • 300 30 inch (750 mm) NA • NA • 360 36 inch (900 mm) NA • NA •

Code Flange Material, Type, and Rating

C1 Carbon Steel, ASME B16.5 (ANSI) Class 150 (30- and 36-inch AWWA C207 Table 2 Class D Flat Face) •

C2 Carbon Steel, MSS SP44 Class 150 (30-inch [750 mm] only) •

C3 Carbon Steel, ASME B16.5 (ANSI) Class 300 •

S1 304 Stainless Steel, ASME B16.5 (ANSI) Class 150 (30- and 36-inch AWWA C207 Table 2 Class D Flat Face) •

S2 304 Stainless Steel, MSS SP44 Class 150 (30- through 36-inch [750 through 900 mm] only) •

S3 304 Stainless Steel, ASME B16.5 (ANSI) Class 300 •

(1)

Two Measurement Electrodes

Two Measurement Electrodes + Third Grounding Electrodes

Two Bulletnose Measurement Electrodes (Available in 2-inch (50 mm) and larger line sizes only)

Continued on Next Page

(2)

Lining Material (from above)

P, N, and L

Code

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Reference Manual

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Rosemount 8742C

Code Housing Configuration

W0 Sealed, welded housing • W1 Sealed, welded housing with pressure relief • W3 Sealed, welded housing with separate electrode compartments •

Code Product Certifications

N0 Factory Mutual (FM) Class I, Division 2 Approval for nonflammable fluids;

Canadian Standards Association (CSA) Class I, Division 2 Approval

N5 Factory Mutual (FM) Class 1, Division 2 Approval for flammable fluids •

Code Options

Optional Grounding Rings

G1 316L SST Grounding Rings •

G2 Hastelloy C-276 Grounding Rings (3- through 12-inch (80 through 300 mm) flowtube line sizes) •

G3 Titanium Grounding Rings (3- through 12-inch (80 through 300 mm) flowtube line sizes) •

G4 Tantalum Grounding Rings (3- through 8-inch (80 through 200 mm) flowtube line sizes) •

G5 Single 316L SST Grounding Ring •

G6 Single Hastelloy C-276 Grounding Ring (3- through 12-inch (80 through 300 mm) flowtube line sizes) •

G7 Single Titanium Grounding Ring (3- through 12-inch (80 through 300 mm) flowtube line sizes) •

G8 Single Tantalum Grounding Ring (3- through 8-inch (80 through 200 mm) flowtube line sizes) •

Optional Lining Protectors

L1 316L SST Lining Protectors L2 Hastelloy C-276 Lining Protectors (3- through 12-inch (80 through 300 mm) flowtube line sizes) • L3 Titanium Lining Protectors (3- through 12-inch (80 through 300 mm) flowtube line sizes) •

Other Options

B3 Integral Mount with Rosemount 8732C (8742C) transmitter •

D1 High Accuracy Calibration [0.25% of rate from 3-30 ft/s (0.9-10 m/s)] matched flowtube and transmitter system

D2 Dual Flowtube Calibration Numbers on Rosemount 8712H and 8712C Transmitters •

DT Heavy Duty Tagging •

H1 Rosemount 8703 flowtube lay length (available for 3- through 4-inch (80 through 100 mm) line sizes);

H2 Rosemount 8703 flowtube lay length (available for 3- through 16-inch (80 through 400 mm) line sizes •

H5 Foxboro® Model 2800 lay length (available for 3.0 through 18 inch (80 through 450mm line sizes)) spool piece:

H7 ABB Fischer & Porter® Model CopaX and MagX lay length (available for 0.5 through 12in (15 through 3000 mm

J1 CM20 Conduit Adapter •

J2 CM13.5 Conduit Adapter • Q4 Inspection Certificate-Calibration Data, ISO 10474 3.1B, (Flow Cal., 1-10ft/s [0.3-3 m/s]) • Q5 Hydrostatic Testing Certification • Q8 Material Traceability Certificate per DIN 3.1 B • Q9 Material Traceability Certificate (electrodes only) per DIN 3.1B 337 •

Q15 NACE Certification Q66 Welding Procedure Qualification Record Documentation • Q67 Welder Performance Qualification Record Documentation • Q68 Welding Procedure Specification Documentation • Q70 Inspection Certificate Weld Examination, ISO 10474 3.1B (3- to 12-inch [80-300 mm], 14- to 18-inch

Typical Model Number: 8707 T SA 040 C1 W0 N0

(1) Electrode options limited to two Hastelloy C-276 or two 90% Platinum-10% Iridium electrode material.

Cannot be ordered with 300# lining protectors or Quality Certificates Q8, Q9, Q66, Q67, Q68, or Q70.

(2) Available for 10 inch and larger line sizes only. (3) Grounding Rings and Lining Protectors provide the same fluid grounding function. Lining Protectors available with Teflon (PTFE) and Tefzel (ETFE) lining

material only.

(4) Option Code must be ordered for both flowtube and transmitter. (5) Order as a separate line item.

spool piece: ASME B16.5 (ANSI) Class 150 or Class 300 flange and 304 stainless steel pipe

ASME B16.5 (ANSI) Class 150 flange and 304 stainless steel pipe.

line sizes)) spool piece: ASME B16.5 (ANSI) Class 150 flange and 304 stainless steel pipe or teflon spacer.

(5)

[350-450 mm], and 20- to 36-inch [500-900 mm] flowtube line sizes only – see pricing below)

– 3- to 12-inch [80-300 mm] flowtube line sizes • – 14- to 18-inch [350-450 mm] flowtube line sizes • – 20- to 36-inch [500-900 mm] flow tube line sizes •

(3)

Availability

(4)

•

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Reference Manual

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Rosemount 8742C

August 2004

Rosemount 8711

Model Product Description Availability

8711 Magnetic Flowmeter Flowtube (flangeless construction) •

Code Lining Material

T Tefzel (ETFE) •

S Teflon (PTFE) (not available with 0.15 and 0.30 inch [4 and 8 mm] line sizes) •

Code Electrode Material / Electrode Type

Two Measurement Electrodes

SA 316L Stainless Steel • HA Hastelloy C-276 • TA Tantalum • PA 90% Platinum—10% Iridium • NA Titanium •

Two Measurement Electrodes + Third Grounding Electrode

SE 316L Stainless Steel • HE Hastelloy C-276 • TE Tantalum • PE 90% Platinum—10% Iridium • NE Titanium •

Two Bulletnose Measurement Electrodes (Available in 2-inch (50 mm) and larger line sizes only)

SB 316L Stainless Steel • HB Hastelloy C-276 •

Lining Material (from above)

Code Line Size Code T Code S

15F 0.15 inch (4 mm) (not available with Tef lo n (PTFE) lining material) • NA 30F 0.30 inch (8 mm) (not available with Tef lo n (PTFE) lining material) • NA 005 ½ inch (15 mm) • • 010 1inch (25 mm) • • 015 1½ inch (40mm) • • 020 2 inch (50mm) • • 030 3 inch (80 mm) • • 040 4 inch (100 mm) • • 060 6 inch (150 mm) • • 080 8 inch (200 mm) • •

Code Line Size

15F 0.15 inch (4 mm) (not available with Tef lo n (PTFE) lining material) • 30F 0.30 inch (8 mm) (not available with Tef lo n (PTFE) lining material) • 005 ½ inch (15 mm) • 010 1inch (25 mm) • 015 1½ inch (40mm) • 020 2 inch (50mm) • 030 3 inch (80 mm) • 040 4 inch (100 mm) • 060 6 inch (150 mm) • 080 8 inch (200 mm) •

Code Transmitter Mounting Configuration

R Remote •

U Integral, mounted to Rosemount 8732C/8742C transmitter •

Continued on Next Page

A-30

Emerson Rosemount 8742C, 8700 Series Reference Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Section 1 Introduction

Section 2 Installation

Section 3 Flowtube Installation

Section 4 Configuration

Section 5 Operation and Maintenance

Section 6 Troubleshooting

Appendix A Reference Data