Emerson 8800C, 8800A Product Manual

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Page 1

Model 8800C and Model 8800A Smart Vortex Flowmeter

00809-0100-4003

English

Rev. JA

Page 2

Page 3

Product Manual

Model 8800C and Model 8800A Smart Vortex Flowmeter

NOTICE

Read this manual before working with the product. For personal and system safety, and for optim um 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

Technic al 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 Unit ed States, contact your local Ros emount represent ative.

Rosemount Inc.

Fisher-Rosemount Flow

Groene veldselaan 6-8 3903 AZ Veenendaal The Netherlands Tel 31 (0) 318 549 549 Fax 31 (0) 318 549 559 Tel 0800-966-180 (U .K. only) Fax 0800-966-181 (U.K. only)

¢00809-0100-4003s¤

00809-0100-4003, Rev. JA, 4/01

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

For inf o rmation on Rosemou nt n uclea r-qu alif ied pr oduct s, con tact y ou r l ocal R ose moun t Sales Representative.

Rosemoun t , the Rosemo un t l ogotype , Fisher-Ros em ount, Mana ging the Pr ocess Better, an d P lantWe b are marks of one of the Fisher-Rosemount group of companies. HART is a registered trademark of the HART Communication Foundation. Hastelloy C is a r egistered trademark o f H aynes International Inc. Inconel is a registered trademark of International Nickel Co.

Cover photo: 8800- 8800C918

Fisher-Rosemount

Singaport Pte Ltd. 1 Pandan Crescent Singapore 128461 Tel (65) 777-8211 Fax (65) 777-0947 [email protected]

Product documentation available at...

www.rosemount.com

Fisher-Rosemount satisfies all obligations coming from le gislatio n to harmonise product requirements in the European Union .

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Rosemount Model 8800C Vortex Flowmeter

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Table of Contents

SECTION 1 Introduction

SECTION 2 Installation

How to Use this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

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

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

Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

General C o ns i d erations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Flowmeter Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Flowmeter Orientation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Wetted Mater ia l Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Environmental Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Hazardous Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Hardware Con figuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Failure Mode vs. Saturation Output Values. . . . . . . . . . . . . . . . 2-7

LCD Indicator Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Installation Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Flow Direction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Flange Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Wafer-Style Flowmeter Alignment and Mounting . . . . . . . . . . 2-10

Flanged-Style Flowmeter Mo u n ting . . . . . . . . . . . . . . . . . . . . . 2-12

Flowmeter Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Electroni cs Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Conduit Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

High-Point Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Cable Gland. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Grounding th e T ra n smitter Case . . . . . . . . . . . . . . . . . . . . . . . 2-14

Wiring Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

Remote Electronics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

Software C o n figurati o n. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33

LCD Indicat o r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33

Installin g the Indicato r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34

Diagnostic Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35

Transient Pr otection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36

Installing the Transient Protector. . . . . . . . . . . . . . . . . . . . . . . 2-36

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Rosemount Model 8800C Smart Vortex Flowmeter

SECTION 3 Operation

Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Process Variables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Totalizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Diagnost ics/Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Test/Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Loop Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Pulse Outpu t Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Flow Simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

D/A Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Scaled D/ A Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Shed Freq at URV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Basic Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Tag. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Service Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

PV Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Range Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Process Tem pera ture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Mating Pipe I D ( In s ide Diameter). . . . . . . . . . . . . . . . . . . . . . . 3-11

Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Advanced Functionality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Detailed Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Characterize Meter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

PV Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

Configure O p tions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

HART Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Signal Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

Device Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

SECTION 4 Hardware and Software Maintenance and Troubleshooting

Safety Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Troubles h ooting Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4- 3

Advanced Troubleshootin g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

TP1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Shedding Freq u e n cy Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Testing proc edu res. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Hardware Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Replacing the Terminal Block in th e Housing . . . . . . . . . . . . . 4-11

Replacing the Electronics Bo ards . . . . . . . . . . . . . . . . . . . . . . . 4-12

Replacing the Electronics H o us ing . . . . . . . . . . . . . . . . . . . . . . 4-13

Replacing the Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

Replacing the Sensor: Remo vable and

Integral Support Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17

Remote Elec tronics Proce d u r e. . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

Coaxial Ca ble a t the Electroni cs Housing. . . . . . . . . . . . . . . . . 4-25

Changing th e Housing Orientation. . . . . . . . . . . . . . . . . . . . . . 4-26

Return of Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27

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Table of Contents

APPENDIX A Reference Data

APPENDIX B Approvals

APPENDIX C HART Communicator

APPENDIX D Model 268 Communicator

APPENDIX E Electronics Verification

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

Performan c e S p ecifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-6

Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-11

Hazardous Locations Certifications . . . . . . . . . . . . . . . . . . . . . . . .A-13

European Atex Directive Information . . . . . . . . . . . . . . . . . . . . . .A-1 6

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-17

Connection s and Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-6

Diagnostic Messa g e s. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-7

Diagnostics Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-4

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

Electro n ic s V e rificatio n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-2

Electronics Verificati on Using Flow Simulati onMode. . . . . . . .E-2

Fixed Flow Rate Simulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-2

Varying Flow Rate Simulation . . . . . . . . . . . . . . . . . . . . . . . . . .E-2

Electronics Verification Using an

External Fr equ ency Generator . . . . . . . . . . . . . . . . . . . . . . . . . .E-3

Calculating Output Variables with Known Input Frequency . .E-4

Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-6

English Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-6

SI Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-9

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Rosemount Model 8800C Smart Vortex Flowmeter

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Section

1 Introduction

How to Use this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-1

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

HOW TO USE THIS MANUAL

This manual provides installation, configuration, troubleshooting, and other procedures for the use of the Rosemount Model 8800C Smart Vortex Flowmet e r. Specifications and other imp or tant information ar e also inc lu d ed.

Section 2: Installation

provides assistance in hardware configuration and lists the options available to customers for the Model 8800C.

Section 3: Op eratio n

describes the Model 8800C software functions, configuration parameters, and other online variables. The descriptions are provided according to the function you want to perform.

Section 4: Hardware and Software Maintenance and Troubleshooting

supplies troubleshooting tables to lead you through any problems that may arise in the use of the Model 8800C. There are also inst ruc tio ns on basic maintenance of your Model 8800C.

Appendix A: Reference Data

gives reference and specification data for the Model 8800C and its applications.

Appendix B: Approvals

shows accompanying drawings for the Model 8800C FM and CSA approvals and certi fications.

Appendix C: HART Communicator

provides command tree, and Fast Key Sequence tables for the HART Communicator when used in conjunction with the Model 8800C.

Appendix D: Model 268 Communicator

supplies command tree, and Fast Key Sequence tables for the Model 268, when used in conjunction with the Model 8800C.

Appendix E: Electroni cs Verification

provides a short proc edure for verificati on of electronic output to assist in meeting the quality standards for ISO 9000 cer tified manufacturing processes.

SAFETY MESSAGES Procedu r es and inst ru ctions in th is manua l may re quire special

precautions to ensure the safety of the personne l performing the operations. Refer to the safety messages, listed at the beginning of each section , before performing any operati ons.

1-1

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Rosemount Model 8800C Vortex Flowmeter

1-2

Page 11

Section

2 Installation

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

Commis s io n in g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-3

General C o n s id e rations . . . . . . . . . . . . . . . . . . . . . . . . . . . p ag e 2 -3

Hazardous L o c at io n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-6

Hardware Configuratio n . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-6

Installa ti o n Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-8

Software C o nf ig u r a tion . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2 -3 2

Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2 -3 3

LCD Indic a to r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2-33

Transien t P rotec tion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2 -3 6

This section provides installation instructions for the Model 8800C Vortex Flowmeter. Dimensional drawings for each Model 8800C variation and mounting configuration are included in this section.

The options available for the Mo del 8800C flowmeter are also descri bed in this section. The numbers in parentheses refer to the codes used to order each option.

SAFETY MESSAGES Instructions and procedures in this section may require special

precautions to ensure the safety of the personne l performing the operations. Please refer to the following safety messages before performing any operation in this section.

Explosions could result in death or serious injury:

• Do not remove the tr ansmi tte r cov e r in e xpl os iv e atmo spher es wh en the c ircuit

is alive.

• 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-i ncendive field wiring pr actices.

• V eri fy that the operat i ng atmosphere of the transmitter i s consistent with the appropriate hazardous locations certifi cations.

• Both transmitter covers must be fully engaged to meet explosion-proof requirements.

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

• Make sure only qualified personnel perform the instal lation.

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Rosemount Model 8800C Vortex Flowmeter

Figure 2-1. Installation Flowchart

START HERE

Bench

Commissioning?

Yes

Review

Configuration

OK?

Go to

Yes

CONFIGURE

Service Type

Set Units

Are you

using mass

units?

Set Range Values

Set Process

Temperature

Set Pipe ID

Verify K-Factor

Yes

Set Proces s

Density

FIELD

INSTALL

Mount

Flowmeter

Mount

Conduit

Wire

Flowmeter

Power

Flowmeter

Did you

Configure on

Bench?

Yes

DONE

2-2

Transfer Data to

Flowmeter

Is meter

installed?

Go to

Yes

DONE

Review

Configuration

Configure if

Necessary

Go to

Page 13

Installation

COMMISSIONING Commission the Model 8800C bef ore putting it into operation. This

ensures proper configur ation and opera tion of the meter. It also enables you to check hardware settings, test the flowmeter electronics, verify flowmeter configuration data, and check output variables. Any problems can be correct ed – or configuration setti ngs changed – before going out into the installation environment. To commission on the bench, connect the HART

Solutions signal loop in accor dance with the spec ificatio ns for y our com municator. See Appendices C, D, and E for additional info rm ation.

™

(AMS) software (or other communications device) to the

Communicator or Asset Management

GENERAL CONSIDERATIONS

Before you install a flowmete r in any application, you must consider flowmeter sizing (the line size) and location. Choose the correct flowmeter size for a n appli cation to in crea se ran geabi lity and minim ize pressure drop and cavitation. Proper location of the flowmeter can ensure a clean and accurate signal. Follow the installation instructions carefully to reduce start-up delays, ease maintenance, and ensure optimum performance.

Flowmete r Sizing Correct meter sizing is important for flowm eter performance . The

Model 8800C is capable of processing signals from flow applications within th e limitations described in Ap pe ndix A: Re fe rence Dat a. Full scale is continuously adjustable within these ranges.

To determine the correct flowmeter size for an application, process conditions must be withi n the stated requirements for Reynolds number and velocit y. See Appendix A: Reference Data for sizing data .

Contact your local Rosemount Inc. sales represen tati ve t o obtai n a cop y of the Model 8800C Vortex Flowmeter Sizing Program which calculates flowmeter sizes bas ed on user-suppli ed input.

Flowmete r Or ientati on Design process pipi ng so the meter body will remain fu ll, with no

entrapped air. Allow enough straight pipe both upstream and downstream of the meter body to ensure a nonskewed, symmetrical profile . Install valves downstream of the meter when possible.

Vertical Installation

Vertical installation allows upward process liquid flow and is generally preferred. Upward flow ensures that the meter body always remains full and that any solids in the fluid are evenly distributed.

The vortex meter can be mounted in the vertical down position when measuring gas or steam f lows. This type of applic ation should be strongly discouraged for liquid flows, although it can be done with prope r pi ping design.

NOTE

To ensure that the meter body remains full, avoi d down w a rd vertical liquid flows where back pressure is inadequate.

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Rosemount Model 8800C Vortex Flowmeter

High-Temperature Installations

Install the mete r body so the electronic s are posi tioned to the side of t he pipe or below the pipe as shown in Figure 2-2. Insulation may be required around the pipe to maintain a temperature below 185 °F (85 °C).

Figur e 2-2. Examples of Hig h-Temperature Installat ions

The meter body installed with the

electronics to the side of the pipe.

Steam Installations

The meter body installed with the

electronics below the pipe.

8800-0002A01C

For steam applications, avoid installations , such as the one shown in Figure 2-3. Such installations may cause a water-hammer condition at start-up due to trapped condensate. The high force from the water hammer can over stress the sensing mechanism and cause permanent damage to the sensor.

Figure 2-3. Avoid This Type of Installation for Steam Applications

8800-8800G15B

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Upstream/Downstream Piping

The vortex meter may be installed with a minimum of ten straight pipe diameters (D) upstream and five straight p i p e di ameters (D ) downstream.

Rated accuracy is based on the number of pipe diameters from an upstream disturbance. An additional 0.5% shift in K-factor may be introduced between 10 D and 35 D , depending on disturbance . F or mor e informa t io n on instal lation eff e ct s, see Technical Data S h eet 00816-0100-3250. This effect can also be corrected in the electronics. See Installation Effect on page 3-13.

Pressure and Temperature Transmitter Location

When using pressure and temperature transmitt ers in conjunction with the Model 8800C for compensated mass flows, install the transmitter downstream of the Vortex Flowmeter. See Figure 2-4.

Figure 2-4. Pressure and Temperature Transmitter Location

Installation

P T

4 Downstream

6 Downstream

8800-8800G15A

Wetted Material Selection Ensure that the process fluid is compatible with the meter body w e tted

materials when s pecifying the Model 8800C. Corrosion will shorten the life of the meter body. Consult recogniz ed sources of corrosion data or contact your Rosemount Sales Representative for more information.

Environmental Considerations

Avoid excessive heat and vibration to ensure maximum flowmeter life. Typical problem areas include high-vibration lines with integrally mounted electronics, warm-climate installations in direct sunlight, and outdoor installations in cold climates.

Although the s ignal c ondi tion ing func tion s red uce suscept ib ili ty t o extraneous noise, some environments are more suitable than others. Avoid placing the flowm eter or it s wiring cl os e to devi ce s tha t produc e hig h intensit y elec tro magne tic and ele ct rostat i c fiel ds. Such devi ce s incl ude electric w eldi ng equ ipmen t, large e lec tri c moto rs an d transformers, and commu n ic a tion tran s m itters.

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Rosemount Model 8800C Vortex Flowmeter

HAZARDOUS LOCATIONS The Model 8800C has an explosio n-pr oof housi ng and ci rcuitr y suitabl e

for intrinsically safe and non-incendive operation. Individual transmitters are clearly marked with a tag indicating the certifications they carry. See Section A: Reference Data for specific approval categories.

HARDWARE CONFIGURATION

Figure 2-5. Alarm and Security Jumpers

The hardware jumpers on the Model 8800C e nable you to set the alarm and security. (See Figure 2-5.) To access the jumpers, remove the electronics housing cover from the end of the Model 8800C. If your Model 8800C does not include an LCD indicator, the jumpers are accessible by removing the cover on the electronics side. If your Model 8800C includes an LCD option, the alarm and security jumpers are found on the face of the LCD indicator. (See Figure 2-6 on page 2-8.)

NOTE

If you will be changing configur ation variables frequently, it may be useful to leave the security lockout jumper in the OFF position to avoid exposing the flowmeter electronics to the plant environment.

Set these jumpers during the commissioning stage to avoid exposing the electroni cs to the plant environment.

2-6

8800-0000A04C

Page 17

Installation

Alarm

As part of normal operations , the Model 8800C continuously runs a self-diagnostic routine. If the routine detects an internal failure in the electr on ics, flowme ter output is driven to a low or high alarm leve l, depending on the pos ition of the failur e mode j umper. The jumper is set per the CDS; the default setting is HIGH.

The failure mode jumper is labeled ALARM and is set to the high position at the factory.

Security

You can protect the configurat ion data with the security locko ut jumper. With the security lockout jumper on, an y configuration changes attempted on the electronics are disallowed. You can stil l access and review any of the operating param eters and scroll through the available c hange s, but no ac tual cha nges wil l be perm itted. The ju mper is set per C D S ; th e de fa u l t setting is OF F.

Failure Mode vs. Saturation Output Values

The failure mode alarm output levels differ from the output values that occur when the operating flow is outside the range points. When the operating flow is outside the range points, the analog output continues to track the operating flow until reaching the saturation value liste d below; the output does not exceed the li sted saturati on value regar dless of the operating flow. F or exam ple , with standard al arm and satur ati on levels and flows outside the 4—20 mA range points, the output saturates at 3.9 mA or 20.8 mA. When the tr ansm itter diagnostics detect a failure, the analog output is set to a specific alarm value that differs from the saturation value to allow for proper troubleshooting.

Table 2-1. Analog Output: Standard Alarm Values vs. Saturation Values

Level 4—20 mA Saturation Value 4—20 mA Alarm Value

Low 3.9 mA <

High 20.8 mA >21.75 mA

Table 2-2. Analog Output: NAMUR-Compliant Alarm Values vs. Saturation Values

Level 4—20 mA Saturation Value 4—20 mA Alarm Value

Low 3.8 mA <

High 20.5 mA >22.5 m A

3.75 mA

3.6 mA

2-7

Page 18

Rosemount Model 8800C Vortex Flowmeter

LCD Indicator Option If your electronics are equipped with the LCD indicator (Opt ion M5),

the ALARM and SECURITY jumpers are located on the face of the indicator as shown in Figure 2-6.

Figure 2-6. LCD Indicator Alarm and Security Jumpers

8800-0000B04A

INSTALLATION TASKS The installation tasks include detailed mechanical and electrical

installation procedures.

Handling Handle all parts carefully to prevent damage. Whenever possible,

transport the sy s te m to the insta llation sit e in the ori gi nal ship pi ng containers. Keep the shipping plugs in the conduit connections until you are ready to connect and seal them.

Flow Direction Mount the meter body so the FORWARD end of the flow arrow, shown

on the meter body, points in the direction of the flow through the body.

Gaskets The Model 8800C requires gaskets supplied by the user. Be sure to

select gasket ma terial that is compatib le w ith the process fluid and pressure ratings of the specific installation.

NOTE

Ensure that the inside diame ter of the gasket is larger than the inside diameter of the flowmeter and adjacent piping. If gasket material extends into the flow stream, it will disturb the flow and cause inaccurate measurements.

2-8

Page 19

Installation

Flange B olts Install the Model 8800C Flowmeter between two conventional pipe

flanges, as shown in Figure 2-7 and Figure 2-8 on page 2-11. Table 2-3, 2-4, and 2-5 lists the recommended minimum stud bolt lengths for wafer-style meter body size and different flange ratings.

Table 2-3. Minimum Recommended Stud Bolt Lengths for Wafer Installation with ASME B16.5 (ANSI) Flanges

Minimum Recommended Stud Bolt Lengths

(in Inches) for Each Flange Rating

Line Size Class 150 Class 300 Clas s 600

½-inch 6.00 6.25 6.25

1-inch 6.25 7.00 7.50

1½-inch 7.25 8.50 9.00

2-inch 8.50 8.75 9.50 3-inch 9.00 10.00 10.50 4-inch 9.50 10.75 12.25 6-inch 10.75 11.50 14.00 8-inch 12.75 14.50 16.75

T able 2-4. Minimum Recommended Stud Bolt Lengths for Wafer Ins tal lati on wi th DIN F lan ges

Minimum Recommended Stud Bolt Lengths

(in mm) for Each Flange Rating

Line Size PN 16 PN 40 PN 64 PN 100

DN 15 160 160 170 170 DN 25 160 160 200 200 DN 40 200 200 230 230 DN 50 220 220 250 270

DN 80 230 230 260 280 DN 100 240 260 290 310 DN 150 270 300 330 350 DN 200 320 360 400 420

T able 2-5. Minimum Recommended Stud Bolt Lengths for Wafer Installation with JIS Flanges

Minimum Recommended Stud Bolt Lengths

(in mm) for Each Flange Rating

Line Size JIS 10k JIS 16k and 20k JIS 40k

15mm 150 155 185 25mm 175 175 190 40mm 195 195 225 50mm 210 215 230

80mm 220 245 265 100mm 235 260 295 150mm 270 290 355 200mm 310 335 410

2-9

Page 20

Rosemount Model 8800C Vortex Flowmeter

Wafer-Style Flowmeter Alignment and Mounting

Center the wafer-style meter body inside diameter with respect to the inside diameter of the adjoining upstream and downstream pipi ng. This will ensure that the flowmeter achieves its specified accuracy.

Alignment rings are provided with each wafer-style meter body for centering purposes. Follow these steps to align the meter body for installation. Refer to Figure 2-7 on page 2-11.

1. Place the alignment ri ngs over each end of the meter body.

2. Insert the studs for the bottom side of the meter body between the pipe flanges.

3. Place the meter body (with alignment rings) between the flanges . Ma ke sure that the alignment rings are properly placed onto the studs. Align the studs with the markin gs on the ring that correspond to the flange you are using. If a spacer is used, see Spacers and Table 2-6 below.

NOTE

Be sure to align the flowmeter so the electronics are accessible, the conduits drain and the flow m eter is not subject to direct heat.

4. Place the remaining studs between the pipe flanges.

5. Tighten the nuts in the sequence shown in Figure 2-9 on page 2-12.

6. Check for leaks at the flanges after tightening the flange bolts.

NOTES

The required bolt load for sealing the gasket joint is affected by several factors , including operati ng pressure and gasket material, width, and condition. A number of fa ctors also affect the actual bolt load resulting from a measured torque, including condition of bolt threads, friction between the nut head and the flange, and parallelism of the flanges. Due to these application-dependent factors, the required torque for each applicati on ma y be different. Follow the guidelines outlined in the ASME Pressure Vessel Code (Section VIII, Division 2) for proper bolt tig h tening.

Make sure the flowmeter is centered between flanges of the same nominal size as the flowmet er.

Spacers

Spacers are available with the Model 8800C to maintain the Model 8800A dimensions. If a spacer is used, it sho uld be downstream of the meter body. The spacer kit c omes wit h an al ignment ring fo r eas e of installation. Gaskets should be placed on each side of the spacer.

Table 2-6. Dimensions for Spacers

Line Size

1.5 (40) 0.47 (11.9) 2 (50) 1.17 (29.7) 3 (80) 1.27 (32.3)

4 (100) 0.97 (24.6)

Dimensions

inch (mm)

2-10

Page 21

Figure 2-7. Wafer-Style Flowmeter Installation with Alignment Rings

Alignment Ring

Installation Studs and Nuts

(Supplied by Customer)

Installation

Spacer (for Model 8800C to maintain Model 8800A dimens ions)

Alignment Rings

(Supplied by Customer)

Figure 2-8. Flanged-Style Flowmeter Installation

Installation Bolts and Nuts

(Supplied by Customer)

Gaskets

(Supplied by Customer)

Gaskets

Flow

8800-0465A01B

Flow

8800-0465A02B

2-11

Page 22

Rosemount Model 8800C Vortex Flowmeter

Flanged-Style Flowmete r M o unting

Figure 2-9. Flange Bolt Torquing Sequence

Physical mount ing of a flan ged-style fl owmeter is si milar to i nstalli ng a typical section of pipe. Conventional tools, equipment, and accessories (such as bolts and gas kets ) are required . Tig hten the nuts fol lowing t he sequence shown in Figure 2-9.

NOTE

The required bolt lo ad fo r seali ng the gas ket jo int is aff ec ted b y seve ral factors , i nclu din g ope ratin g pre ssu re and gasket m ateri al , width , and conditio n. A number of fac tors al so affec t th e actual bol t load re sul ting from a measured torque, including condition of bolt threads, friction between the nut head and the flan ge , and par al leli sm of the fla nges . Due to these appl icat io n-d epen dent fac to rs , the r equi red to rque for each application may be different. Follow the guidelines outlined in the ASME Pressure Vessel Code (Section VIII, D ivi si on 2) for prop er bolt ti ghteni ng.

Make sure the flowmeter is centered between flanges of the same nominal size as the flowmet er.

2-12

4-Bolt

8-Bolt

12-Bolt

16-Bolt

20-Bolt

8800-0088A

Page 23

Installation

Flowmete r Gro unding Grounding is not required in typical vortex applications; however, a

good ground will eliminate possible noise pickup by the electronics. Grounding straps may be used to ensure that the meter is grounded to the process piping. If you a re us ing the tr ansi ent protect ion option (T1) , grounding straps are required to provide a good low impedance ground.

To use grounding straps, secure one end of the grounding strap to the bolt extending from the side of t he meter body and at tac h the other end of each grounding strap to a suitable ground.

Electronics Considerations Both integral and remote mounted electronics require input power at

the electroni cs. For remote mount inst allations, mount the electronics against a flat surface or on a pipe that is up to two inches in diameter. Remote mounting hardware includes a bracket that is polyurethane painted carbon steel and one carbon steel u-bolt. See Figure 2-16 on page 2-24 for dimensional information.

High-Temperature Installations

Install the meter body so the electronics are positioned to the si de of or below the pipe as shown in Figure 2-2 on page2-4. Insulation may be required around the pipe to maintain a temperature below 185 °F (85 °C).

Conduit C onnecti o ns The electronics housing has two ports for

connections. Adapters are also available for PG 13.5 or M201.5 conduit. These connections are made in a conventional manner in accordance with local or plant electrical codes. Be sure to properly seal unused ports to preve nt moi sture or othe r co ntamina tio n from entering the terminal block compartment of the electronics housing.

NOTE

In some applications it may be necessary to install conduit seals and arrange for conduit s to drain to prevent moisture from entering the wiring compartment.

/2–14 NPT conduit

High-Point Installation Prevent condensation in any conduit from flowing into the housing by

mounting the flowmeter at a high point in the conduit run. If the flowmeter is mounted at a low point in the conduit run, the terminal compartment could fill with fluid.

If the conduit originates above the flowmeter, route conduit below the flowmeter before entry. In some cases a drain seal may need to be installed.

2-13

Page 24

Rosemount Model 8800C Vortex Flowmeter

Figure 2-10. Proper Conduit Installation with Model 8800C

Conduit Line

Cable Gland If you are using cab le glan d inste ad of conduit , follo w the cabl e gl and

manufacturer’s inst ructi ons for prep aration and make the c onnectio ns in a convention al man ner in acc or dance w ith lo cal or plant el ectri ca l codes. Be sure to prope rly sea l unus ed port s to prev ent moist ur e or ot her contaminati on from en teri ng the termi nal bl oc k comp art ment of the electronics housing.

Grounding the Transmitter Case

The transmitter case should always be grounded in accordance with national and local electrical codes. The most effective transmitter case grounding method is dire ct connection to earth ground with m inimal impedance. Methods for grounding the transmitter case include:

• Internal Ground Connection: The Internal Ground Connection screw is inside the FIELD TERMINALS side of the electronics housing. This screw is identified by a ground symbol (

), and is

standard on all Model 8800C transmitters.

• External Ground Assembly: This assembly is included with the optional transient protection terminal block (Option Code T1), and it is included with KEMA/CENELEC Flameproof Certification (Option Code ED), BASEEFA/CENELEC Intrinsic Safety Certification (Option Code I1), and BASEEFA Type N Certification (Option Code N1). The External Ground Assembly can also be ordered with the transmitter (Option Code V5).

8800-000A02B

2-14

NOTE

Grounding the transmitt er case using the threaded conduit connection may not provide a sufficient ground. The transient protection terminal block (Option Code T1) doe s not provi de tr ansient pr ote ction unl ess t he transmitter case is properly grounded. See Transient Protection on page 2-36 for transient terminal bloc k grounding. Use the above guidelines to gro und the transmitter case. Do not run the transient protection ground w ire with signal wiring as the grou nd wire ma y carry excessive current if a lightning strike occurs.

Page 25

Figure 2-11. Flanged-Style Flowmeter Dimensional Drawings (1/2- through 12-in./15 through 300 mm Line Sizes)

Terminal Cover

3.20 (81)

2.56 (65)

1.10 (28)

2.85 (72)

Installation

Diameter

3.06 (78)

Displ ay Op t ion

2.00 (51)

1.00 (25)

Diameter B

Electrical Connection ASME

B16.5 (ANSI) ½–14 NPT (2 places)

NOTE Dimensions are in inches (millimeters)

8800-0002A02B, 0002B02B

2-15

Page 26

Rosemount Model 8800C Vortex Flowmeter

Table 2-7. Flanged-Style Flowmeter (1/2-through 3-in./ 15 through 80 mm Line Sizes)

Nominal Size

Inch (mm )

½ (15) Class 150

1 (25) Class 150

1 ½ (40) Cl ass 150

2 (50) Class 150

3 (80) Class 150

(1) ±0.14 inch (3.6 mm) (2) ±0.03 inch (0.8 mm) (3) ±0.20 inch (5.1 mm) (4) Add 0.2 lb (0,1 kg) for display option.

Flange Rating

Class 300 Class 600

PN 16/40

PN 100

JIS 10K/20K

JIS 40K

Class 300 Class 600 Class 900

PN 16/40

PN 100 PN 160

JIS 10K/20K

JIS 40K

Class 300 Class 600 Class 900

PN 16/40

PN 100 PN 160

JIS 10K/20K

JIS 40K

Class 300 Class 600 Class 900

PN 16/40

PN 64 PN 100 PN 160

JIS 10K JIS 20K JIS 40K

Class 300 Class 600 Class 900

PN 16/40

PN 64 PN 100 PN 160

JIS 10K JIS 20K JIS 40K

Face-to-face A

Inch (mm)

6.9 (175)

7.2 (183)

7.7 (196)

6.1 (155)

6.6 (168)

6.3 (160)

7.3 (185)

7.5 (191)

8.0 (203)

8.5 (216)

9.4 (239)

6.3 (160)

7.7 (195)

6.5 (165)

7.9 (200)

8.2 (208)

8.7 (221)

9.4 (239)

10.4 (264)

6.9 (175)

8.2 (208)

8.4 (213)

7.3 (185)

8.5 (215)

9.3 (236)

9.8 (249)

10.5 (267)

12.8 (325)

8.0 (203)

9.2 (234)

9.6 (244)

10.2 (259)

7.7 (195)

8.3 (210)

9.8 (249)

9.9 (251)

10.6 (269)

11.4 (290)

12.9 (328)

8.9 (226)

10.0 (254)

10.5 (267)

11.2 (284)

7.9 (200)

9.3 (235)

11.0 (280)

(1)

A-ANSI RTJ

Inch (mm)

–

7.7 (196)

– –

8.0 (203)

8.5 (216)

9.4 (239)

– – –

– –

8.7 (221)

9.2 (234)

9.4 (239)

10.4 (264)

– – –

– –

9.8 (249)

10.4 (264)

10.7 (271)

12.9 (328)

– – – –

– – –

10.4 (264)

11.2 (284)

11.5 (292)

13.0 (330)

– – – –

– – –

Diameter B

Inch (mm )

0.52 (13,2)

0.95 (24,1)

1.49 (37,8)

1.92 (48,8)

2.87 (72,9)

(2)

Inch (mm)

7.6 (193 )

7.7 (196 )

8.1 (206 )

8.5 (216 )

9.1 (231 )

(4)

Weight

(3)

10.4 (4,7)

10.8 (4,9)

10.4 (4,7)

12.3 (5,6)

10.1 (4,5)

13.5 (6,1)

12.3 (5,6)

15.0 (6,8)

15.8 (7,2)

24.3 (11,0)

13.5 (6,1)

19.5 (8,8)

13.7 (6,2)

17.4 (7,9)

17.6 (8,0)

23.0 (10,4)

25.3 (11,5)

36.3 (16,5)

19.3 (8,8)

27.9 (12,7)

29.3 (13,3)

18.6 (8,4)

25.6 (11,6)

22.0 (10,0)

26.0 (11,8)

29.6 (13,4)

59.4 (26,9)

23.0 (10,4)

30.6 (13,9)

36.4 (16,5)

38.7 (17,6)

19.5 (8,8)

20.1 (9,1)

28.3 (12,8)

36.9 (16,7)

46.1 (20,9)

52.1 (26,6)

75.5 (34,2)

36.3 (16,5)

45.1 (20,5)

54.4 (24,7)

59.6 (27,0)

27.6 (12,5)

35.0 (15,9)

50.0 (22,7)

lb (kg)

9.1 (4,1)

2-16

Page 27

Table 2-8. Flanged-Style Flowmeter (4-through 12-in./ 100 through 300mm Line Sizes) (Refer to Figure 2-11)

Nominal Size

Inch (mm)

4 (100) Cla ss 150

6 (150) Class 150

8 (200) Cla ss 150

10 (250) Class 150

12 (300) Class 150

(1) ±0.14 inch (3.6 mm) (2) ±0.03 inch (0.8 mm) (3) ±0.20 inch (5.1 mm) (4) Add 0.2 lb (0,1 kg) for display option.

Flange Rating

Class 300 Class 600 Class 900

PN 16 PN 40 PN 64

PN 100 PN 160

JIS 10K JIS 20K JIS 40K

Class 300 Class 600

PN 16 PN 40 PN 64

PN 100

JIS 10K JIS 20K JIS 40K

Class 300 Class 600

PN 10 PN 16 PN 25 PN 40 PN 64

PN 100

JIS 10K JIS 20K JIS 40K

Class 300 Class 600

PN 10 PN 16 PN 25 PN 40 PN 64

PN 100

JIS 10K JIS 20K JIS 40K

Class 300 Class 600

PN 10 PN 16 PN 25 PN 40 PN 64

PN 100

JIS 10K JIS 20K JIS 40K

Face-to-face A

Inch (mm)

10.3 (262 )

11.0 (279 )

12.8 (325 )

13.8 (351 )

10.4 (264 )

11.3 (287 )

12.1 (307 )

11.8 (300 )

11.6 (295 )

12.4 (315 )

14.3 (363 )

10.5 (267 )

12.1 (307 )

13.7 (348 )

10.6 (270 )

14.2 (360 )

13.6 (345 )

14.3 (363 )

16.6 (422 )

10.5 (266 )

11.9 (302 )

12.5 (318 )

14.2 (361 )

15.8 (401 )

12.2 (310 )

16.5 (420 )

14.6 (371 )

15.8 (401 )

19.1 (485 )

11.9 (302 )

12.1 (307 )

13.5 (343 )

14.8 (376 )

16.4 (417 )

18.9 (480 )

14.6 (371 )

18.1 (460 )

16.8 (427 )

18.0 (457 )

20.5 (521 )

13.2 (335 )

13.9 (353 )

15.0 (381 )

16.9 (429 )

18.8 (478 )

21.2 (538 )

15.7 (399 )

19.7 (500 )

8.4 (213)

9.4 (239)

8.7 (220)

8.9 (226)

(1)

A ANSI RTJ

Inch (mm)

10.8 (274 )

11.6 (295 )

12.9 (328 )

13.9 (353 )

– – – – –

– – –

12.1 (307 )

13.0 (330 )

14.5 (368 )

– – – –

– – –

14.1 (358 )

15.0 (381 )

16.7 (424 )

– – – – – –

– – –

15.1 (384 )

16.4 (417 )

19.2 (488 )

– – – – – –

– – –

17.3 (439 )

18.7 (475 )

20.7 (526 )

– – – – – –

– – –

Diamet e r B

Inch (mm)

3.79 (96,3)

5.7 (144,8)

7.55 (191 ,8)

9.56 (243)

11.38 (2 89)

(2)

Inch (mm)

9.6 (244)

10.8 (274 )

11.7 (297 )

12.8 (325 )

13.7 (348 )

(3)

Installation

(4)

Weight

lb (kg)

50.7 (23,0)

70.8 (32,1)

96.5 (43,8)

119.7 (54,3)

40.1 (18,2)

49.2 (22,3)

62.1 (28,2)

78.5 (35,6)

85.8 (38,9)

37.0 (16,8)

44.9 (20,4)

75.3 (34,2)

90.0 (40,8)

129.5 (58,7)

195.5 (88,7)

75.6 (34,3)

95.3 (43,2)

138.8 (63,0)

168.5 (76,4)

79.8 (36,2)

97.7 (44,3)

175.9 (79,8)

139.6 (63,3)

196.2 (89,0)

295.0 (133,8)

109.6 (49,7)

108.5 (49,2)

136.3 (61,8)

154.8 (70,2)

214.6 (97,3)

279.9 (127)

109.9 (49,9)

134.3 (60,9)

255.7 (116)

197.2 (89)

285.2 (129)

475.3 (216)

156.3 (71)

161.1 (73)

197.4 (90)

245.3 (111)

306.3 (139)

443.0 (201)

173.3 (79)

220.5 (100)

377.3 (171)

296.0 (134)

413.2 (187)

592.2 (269)

203.1 (92)

223.4 (101)

267.8 (121)

345.7 (157)

428.5 (194)

640.8 (291)

224.5 (102)

287.1 (130)

504.7 (229)

2-17

Page 28

Rosemount Model 8800C Vortex Flowmeter

Figure 2-12. Wafer-Style Dimensional Drawings (1/2-through 11/2 in./15 through 40 mm Line Sizes)

Terminal Cover

Electrical Connection ASME B16.5 (ANSI)

2.00 (51)

/2-14 NPT (2 places)

2.00 (51)

Diameter D

NOTE Dimensions are in inches (millimeters) Electronics housing may be rotated in 90 degree increments

Diameter

3.06 (78)

Display

Option

3.20 (81)

2.56 (65)

1.10 (28)

Diameter B

2.85 (72)

1.00 (25)

8800-002D01D, 002C01C

Table 2-9. Model 8800C Stainless Steel Wafer

Nominal Size

Inch (mm)

½ (15) 2.56 (65) 0.54 (13,7) 7.63 (194) 1.38 (35,1) 0.23 (5,9) 7.3 (3,3)

1 (25) 2.56 (65) 0.95 (24,1) 7.74 (197) 1.98 (50,3) 0.23 (5,9) 7.4 (3,4)

1½ (40) 2.56 (65) 1.49 (37,8) 8.14 (207) 2.87 (72,9) 0.18 (4,6) 10 .0 (4,5)

(1) ±0.14 inch (3.6 mm) (2) ±0.03 inch (0.8 mm) (3) ±0.20 inch (5.1 mm) (4) Add 0.2 lb (0,1 kg) for display option.

Face-to-face A

Inch (mm)

(1)

Diameter B

Inch (mm )

(2)

Inch (mm)

(3)

Diameter D

Inch (mm)

Table 2-10. Model 8800A Hastelloy© Wafer

Nominal Size

Inch (mm )

½ (15) 2.44 (62) 0.52 (13,2) 7.63 (194) 1.38 (35,1) 0.17 (4,3) 6.8 (3,1)

1 (25) 2.44 (62) 0.95 (24,1) 7.74 (197) 1.98 (50,3) 0.17 (4,3) 7.6 (3,4)

1½ (40) 3.11 (79) 1.49 (37,8) 8.08 (205) 2.87 (72,9) 0.47 (11,9) 10.8 (4,9)

(1) ±0.14 inch (3.6 mm) (2) ±0.03 inch (0.8 mm) (3) ±0.20 inch (5.1 mm) (4) Add 0.2 lb (0,1 kg) for display option.

Face-to-face A

Inch (mm)

(1)

Diamet e r B

Inch (mm)

(2)

Inch (mm)

(3)

Diameter D

Inch (mm)

2-18

Weight

lb (kg)

Weight

lb (kg)

(4)

Page 29

Figure 2-13. Wafer-Style Dimensional Drawings (2-through 8-in./50 through 200 mm Line Sizes)

Installation

Electrical

2.00 (51)

Connection ASME B16.5 (ANSI) NPT (2 places)

Diameter D

NOTE Dimensions are in inches (millimeters) Electronics housing may be rotated in 90 degree increments

/2-14

Diameter

3.06 (78)

Display

Option

3.20 (81)

2.56 (65)

Diameter B

Terminal Cover

2.85 (72)

1.10 (28)

1.00 (25)

8800-0002B01C, 0002A01D

Table 2-11. Model 8800C Stainless Steel Wafer

Nominal Size

Inch (mm )

2 (50) 2.56 (65) 1.92 (49) 8.85 (225) 3.86 (98) 0.12 (3) 10.6 (4,8)

3 (80) 2.56 (65) 2.87 (73) 9.62 (244) 5.00 (127) 0.25 (6) 13.6 (6,2) 4 (100) 3.42 (87) 3.79 (96) 10.48 (266) 6.20 (158) 0.44 (11) 21.4 (9,7) 6 (150) 4.99 (127) 5.70 (145) 10.75 (273) 8.50 (216) 1.11 (28) 49.1 (22,3) 8 (200) 6.60 (168) 7.55 (192) 11.67 (296) 10.62 (270) 0.89 (23) 85 (38,6)

(1) ±0.14 inch (3.6 mm) (2) ±0.03 inch (0.8 mm) (3) ±0.20 inch (5.1 mm) (4) Add 0.2 lb (0,1 kg) for display option.

Face-to-face A

Inch (mm)

(1)

Diameter B

Inch (mm)

(2)

Inch (mm )

(3)

Diameter D

Inch (mm)

Table 2-12. Model 8800A Hastelloy© Wafer

Nominal Size

Inch (mm)

2 (50) 3.81 (97) 1.92 (49) 8.45 (215) 3.86 (98) 0.86 (22) 10.8 (4,9)

3 (80) 3.92 (100) 2.87 (73) 9.10 (231) 5.00 (127) 0.76 (19) 15.0 (6,8) 4 (100) 4.47 (114) 3.79 (96) 9.56 (243) 6.20 (158) 0.82 (21) 23.0 (10,4) 6 (150) 4.99 (127) 5.70 (145) 10.75 (273) 8.50 (216) 1.11 (28) 49.1 (22,3) 8 (200) 6.60 (168) 7.55 (192) 11.67 (296) 10.62 (270) 0.89 (23) 85 (38,6)

(1) ±0.14 inch (3.6 mm) (2) ±0.03 inch (0.8 mm) (3) ±0.20 inch (5.1 mm) (4) Add 0.2 lb (0,1 kg) for display option.

Face-to-face A

Inch (mm)

(1)

Diameter B

Inch (mm)

(2)

Inch (mm)

(3)

Diameter D

Inch (mm)

Weight

lb (kg)

Weight

lb (kg)

(4)

2-19

Page 30

Rosemount Model 8800C Vortex Flowmeter

Figure 2-14. Vortex Dual-Sensor Style Flowmeter Dimensional Drawings (1/2-through 8-in./15 through 200 mm Line Sizes)

Terminal Cover

3.20 (81)

2.56 (65)

1.10 (28)

2.85 (72)

3.06 (78)

Display Option

Diameter B

Electrical Con necti on ASME B 16.5

(ANSI)

/2-14 NPT (2 p laces

2.00 (51)

1.00 (25)

NOTE Dimensions are in inches (millimeters)

2-20

8800-0006A01A , 0006B01A

Page 31

Installation

3.20

Figure 2-15. Vortex Dual-Sensor Style Flowmeter Dimensional Drawings (10-through 12-in./250 through 300 mm Line Sizes)

2.00

(51)

(81)

2.56 (65)

1.10 (28)

3.06 (78)

Electrical Connection ASME B16.5 (ANSI)

2.85 (72)

Terminal Cover

1.00 (25)

/2-14 NPT (2 places)

NOTE Dimensions are in inches (milli me t ers)

Display Opti o ns

Diameter B

8800-8800c_01, 8800c_02

2-21

Page 32

Rosemount Model 8800C Vortex Flowmeter

Table 2-13. Vortex Dual-Sensor Style Flowmeter (1/2-through 3-in./15 through 80 mm Line Sizes)

Nominal Size

Inch (mm)

½ (15) Class 150

1 (25) Class 150

1 ½ (40) Class 150

2 (50) Class 150

3 (80) Class 150

(1) ±0.14 inch (3.6 mm) (2) ±0.03 inch (0.8 mm) (3) ±0.20 inch (5.1 mm) (4) Add 0.4 lb (0,2 kg) for display option.

Flange Rating

Class 300 Class 600

PN 16/40

PN 100

JIS 10K/20K

JIS 40K

Class 300 Class 600 Class 900

PN 16/40

PN 100 PN 160

JIS 10K/20K

JIS 40K

Class 300 Class 600 Class 900

PN 16/40

PN 100 PN 160

JIS 10K/20K

JIS 40K

Class 300 Class 600 Class 900

PN 16/40

PN 64 PN 100 PN 160

JIS 10K JIS 20K JIS 40K

Class 300 Class 600 Class 900

PN 16/40

PN 64 PN 100 PN 160

JIS 10K JIS 20K JIS 40K

Face-to-face

Inch (mm)

12.0 (305)

12.3 (312)

12.8 (325)

11.2 (284)

11.8 (300)

11.4 (290)

12.4 (315)

15.1 (384)

15.6 (396)

16.1 (409)

17.0 (432)

13.9 (353)

15.3 (389)

14.1 (358)

15.5 (394)

11.3 (287)

11.8 (300)

12.5 (318)

13.5 (343)

10.0 (254)

11.3 (287)

11.5 (292)

10.4 (264)

11.5 (292)

13.0 (330)

13.6 (345)

14.3 (363)

16.6 (422)

11.8 (300)

12.9 (328)

13.4 (340)

14.0 (356)

11.5 (292)

12.1 (307)

13.6 (345)

14.3 (363)

15.0 (381)

15.8 (401)

17.3 (439)

13.4 (340)

14.5 (367)

14.9 (378)

15.6 (396)

12.3 (312)

13.7 (348)

15.5 (394)

(1)

ANSI RTJ

Inch (mm)

–

12.8 (325)

– –

15.6 (396)

16.1 (409)

17.0 (432)

– – –

– –

11.8 (300)

12.3 (312)

12.5 (318)

13.5 (343)

– – –

– –

13.6 (345)

14.1 (358)

14.3 (363)

16.7 (424)

– – – –

– – –

14.8 (376)

15.7 (399)

15.8 (401)

17.4 (442)

– – – –

– – –

Diameter

Inch (mm)

0.52 (13,2)

0.95 (24,1)

1.49 (37,8)

1.92 (48,8)

2.87 (72,9)

(2)

Inch (mm)

7.6 (193)

7.7 (196)

8.1 (206)

8.5 (216)

9.1 (231)

(3)

Weight

(4)

lb (kg)

16.2 (7,4)

17.4 (7,9)

17.9 (8,1)

17.2 (7,8)

19.2 (8,7)

17.1 (7,8)

20.6 (9,3)

19.8 (9,0)

22.5 (10,2)

23.3 (10,6)

31.8 (14,4)

21.0 (9,5)

27.0 (12,3)

22.1 (10,0)

25.8 (11,7)

27.0 (12,3)

32.4 (14,7)

34.8 (15,8)

45.7 (20,7)

28.7 (13,0)

37.4 (17,0)

38.8 (17,6)

27.9 (12,6)

34.9 (15,8)

31.9 (14,5)

35.9 (16,3)

39.5 (17,9)

69.2 (31,4)

32.9 (14,9)

40.5 (18,4)

46.2 (21,0)

48.5 (22,0)

29.1 (13,2)

29.7 (13,5)

37.9 (17,2)

50.3 (22,8)

59.5 (27,0)

65.5 (29,7)

88.9 (40,3)

49.7 (22,5)

58.5 (26,5)

67.8 (30,8)

73.0 (33,1)

41.0 (18,6)

48.4 (22,0)

63.4 (28,8)

2-22

Page 33

Table 2-14. Vortex Dual-Sensor Style Flowmeter (4- through 12-in./100 through 300 mm Line Sizes)

Nominal Size

Inch (mm)

4 (100) Class 150

6 (150) Class 150

8 (200) Class 150

10 (250) Class 150

12 (300) Class 150

(1) ±0.14 inch (3.6 mm) (2) ±0.03 inch (0.8 mm) (3) ±0.20 inch (5.1 mm) (4) Add 0.4 Lb (0,2 kg) for display option.

Flange Rating

Class 300 Class 600 Class 900

PN 16

PN 40

PN 64 PN 100 PN 160

JIS 10K JIS 20K JIS 40K

Class 300 Class 600

PN 16

PN 40

PN 64 PN 100

JIS 10K JIS 20K JIS 40K

Class 300 Class 600

PN 10

PN 16

PN 25

PN 40

PN 64 PN 100

JIS 10K JIS 20K JIS 40K

Class 300 Class 600

PN 10

PN 16

PN 25

PN 40

PN 64 PN 100

JIS 10K JIS 20K JIS 40K

Class 300 Class 600

PN 10

PN 16

PN 25

PN 40

PN 64 PN 100

JIS 10K JIS 20K JIS 40K

Face-to-face A

Inch (mm)

15.2 (386)

16.0 (406)

17.7 (450)

18.7 (475)

13.3 (338)

14.4 (366)

15.4 (391)

16.3 (414)

17.1 (434)

13.6 (345)

16.8 (427)

19.4 (493)

20.2 (513)

22.2 (564)

16.8 (427)

18.3 (465)

19.9 (505)

21.5 (546)

18.5 (470)

22.0 (559)

24.0 (610)

24.8 (630)

27.0 (686)

20.9 (531)

22.3 (566)

22.9 (582)

24.7 (627)

26.3 (668)

22.6 (574)

27.0 (686)

14.6 (371)

15.8 (401)

19.1 (485)

11.9 (302)

12.1 (307)

13.5 (343)

14.8 (376)

16.4 (417)

18.9 (480)

14.6 (371)

18.1 (460)

16.8 (427)

18.0 (457)

20.5 (521)

13.2 (335)

13.9 (353)

15.0 (381)

16.9 (429)

18.8 (478)

21.2 (538)

15.7 (399)

19.7 (500)

(1)

A ANSI RTJ

Inch (mm)

15.7 (399)

16.6 (422)

17.7 (450)

18.9 (480)

– – – – –

– – –

19.9 (505)

20.8 (528)

22.3 (566)

– – – –

– – –

24.5 (622)

25.4 (645)

27.1 (688)

– – – – – –

– – –

15.1 (384)

16.4 (417)

19.2 (488)

– – – – – –

– – –

17.3 (439)

18.7 (475)

20.7 (526)

– – – – – –

– – –

Diamet e r B

Inch (mm)

3.79 (96,3)

5.7 (144,8)

7.55 (191 ,8)

9.56 (243)

11.38 (2 89)

(2)

Inch (mm)

9.6 (244)

10.8 (274)

11.7 (297)

12.8 (325)

13.7 (348)

Installation

(3)

Weight

(4)

lb (kg)

68.1 (30,9)

88.2 (40,0)

113.9 (51 ,7)

137.1 (62 ,2)

57.6 (26,1)

66.6 (30,2)

79.6 (36,1)

95.9 (43,5)

103.2 (46 ,8)

55.4 (25,1)

63.2 (28,7)

93.7 (42,5)

126.4 (57 ,3)

165.9 (75 ,3)

231.9 (105,2)

112.0 (50 ,8)

131.7 (59 ,7)

175.2 (79 ,5)

204.8 (92 ,9)

124.0 (56 ,2)

141.9 (64 ,4)

220.1 (99 ,8)

190.1 (86 ,2)

246.7 (111,9)

345.5 (156,7)

160.2 (72 ,7)

159.0 (72 ,1)

186.9 (83 ,4)

205.4 (93 ,2)

265.1 (120,2)

330.4 (149,9)

178.2 (80 ,8)

202.6 (91 ,9)

324.0 (147,0)

201.5 (91)

289.5 (131)

479.6 (218)

160.6 (73)

165.4 (75)

210.7 (96)

249.6 (113)

310.6 (141)

447.3 (203)

177.6 (81)

224.8 (102)

381.6 (173)

300.3 (136)

417.5 (189)

596.5 (271)

207.4 (94)

227.7 (103)

272.1 (123)

350.0 (159)

432.8 (196)

645.1 (293)

228.8 (104)

291.4 (132)

508.9 (231)

2-23

Page 34

Rosemount Model 8800C Vortex Flowmeter

Figure 2-16. Dimensional Drawings for Remote Mount Transmitters

3.06 (78)

Display

Option

2.81 (71)

3.20 (81)

2.56 (65)

1.10 (28)

2.81 (71)

4.50

(114)

Terminal Cover

2.85 (72)

1.00 (25)

2.65 (68)

4.50

(114)

/2-14 NPT

(For Remote

Cable

Conduit)

Electrical Co n nection ASME B16.5

(ANSI)

/2-14 NPT (2 places)

1.80 (46)

2.00 (51)

5.50

(140)

4.90

(124)

NOTE Dimensions are in inches (millimeters)

8800-0002A04B, 0002B04B

2-24

Page 35

Figure 2-17. Dimensional Drawings for Remote Mount Wafer-Style Flowmeters

(

/2- through 8-in./15 through 200 mm Line Sizes)

/2-14 NPT (For Remote

Cable Conduit)

NOTE Dimensions are in inches (millimeters)

Installation

8800-0002C04B

Table 2-15. Model 8800C - Stainless Steel Wafer

Nominal Size

Inch (mm)

½ (15) 6.4 (163)

1 (25) 6.5 (165)

1½ (40) 6.9 (175)

2 (50) 7.6 (193)

3 (80) 8.3 (211) 4 (100) 9.2 (234) 6 (150) 9.5 (241) 8 (200) 10.4 (264)

Wafer Style

Inch (mm )

Table 2-16. Model 8800A - Ha stelloy© Wafer

Nominal Size

Inch (mm)

½ (15) 6.3 (160)

1 (25) 6.5 (165)

1½ (40) 6.8 (173)

2 (50) 7.2 (183)

3 (80) 7.8 (198) 4 (100) 8.3 (211) 6 (150) 9.5 (241) 8 (200) 10.4 (264)

Wafer Style

Inch (mm )

2-25

Page 36

Rosemount Model 8800C Vortex Flowmeter

/2-14 NPT (F

Figure 2-18. Dimensional Drawings for Flanged-and Dual-Sensor Flanged-Style Remote Mount Flowmeters

(

/2-through 12-inch/15 through 300 mm Line Sizes)

/2-14 NPT (For Remote Cable

Conduit)

Flanged Flowmeter

NOTE Dimensions are in inches (millimeters)

or Remote Cable

Conduit)

Dual-Sensor Style

Flowmeter

8800-002B02C, 0006C03A

Table 2-17. Remote Mount, Flanged-and Dual Sensor Flowmeter Dimensions

Nominal Size

Inch (mm )

½ (15) 6.4 (16 2 )

1 (25) 6.5 (165 )

1½ (40) 6.8 ( 17 3 )

2 (50) 7.2 (183 )

3 (80) 7.8 (198 ) 4 (100) 8.3 (211) 6 (150) 9.5 (241) 8 (200) 10.4 (264)

10 (250) 11.5 (292) 12 (300) 12.4 (315)

Flange Style

Inch (mm)

2-26

Page 37

Installation

Wiring Procedure The signal terminals are located in a compartment of the electronics

housing separate fr om the flowmeter electronics. Connections for a

HART-based co mmunicat or an d a curre nt t est con nect ion are above the

signal terminals. Figure 2-19 illustrates the power supply load

limitations for the flowmeter.

Power Supply

The dc power supply should provide power with less than two percent

ripple. The total resistance load is the sum of the resistance of the

signal wiring and the lo ad resistance of the controller, indicator, and

related pieces. Note that the resistance of intrin sic safety barriers, if

used, must be included.

NOTE

A minimum loop resistance of 250 ohm s is required to exchange

information with a HART-based communicator. With 250 ohms

of loop resistance, the flowmeter will require a minimum power supply

voltage (Vps) of 16.8 volts to output 24 mA.

If a single power supply is used to power more than one Model

8800C flowmeter, the power supply used and circuitry common

to the flowmeters should not have more than 20 ohms of

impedance at 1200 Hz.

Figure 2-19. Power Supply Load Limitations

1500 1000

500

Load (Ohms)

Power Supply (volts)

= 41.7(Vps – 10.8)

max

= power supply voltage (volts)

= maximum loop resistance (ohms)

max

4210.8

T able 2-18. Wire Resistance per 1,000 Feet (305 m)

Gage Number

A.W.G.

14 2.525 16 4.016 18 6.385 20 10.15 22 16.14 24 25.67

Ohms per 1,000 ft (305 m) at 68 °F (20 °C) Equivalent

2-27

Page 38

Rosemount Model 8800C Vortex Flowmeter

Analog Output

The flowmeter provides a 4–20 mA dc isolated current output, linear

with the flow rate.

To make connection s, remove the FIELD TERMINALS side co ver of the

electronics housing. All power to the flowmeter is supplied over the 4–

20 mA signal wiring. Connect the wires as shown in Figure 2-22 on

page 2-30.

NOTE

Twisted pairs are required to minimize noise pickup in the 4–20 mA

signal and digital communication signal. Shielded signal wire is

preferred, but not required. To ensure communication, wiring should

be 24 AWG or larger and not exceed 5,000 ft (1500 m).

Pulse Output

NOTE

Remember when using the pulse output, all power to the flowmeter

is still supplied over the 4–20 mA signal wiring.

The flowmeter provides an isolated transistor switch-closure frequency

output signal proportional to flow, as shown in Figure 2-20. The

frequency limit s are as follows:

• Maximum Frequency = 10000 Hz

• Minimum Frequency = 0.0000035 Hz (1 pulse/79 hours)

• Duty Cycle = 50%

• For Frequenc ies  0.1 Hz the pulse width will equal 5 seconds

• Supply Voltage (Vs): 5 to 30 V dc

• Load Resistance: 100 W to 100 kW

/0.02 amps = Ohms (typical)

/0.12 amps = Ohms (max)

• Switch Closure: Transistor, open collector Open contact < 50 Close contact < 20

A leakage

The output may drive an externally powered electromechanical or electronic totalizer, or may serve as a direct input to a control element.

To connect the wi r es, re m o ve the FIE LD TERMINALS sid e co ver of the electronics housing. Connect the wires as show n in Figure 2-23 and Figure 2-24 on page 2-30.

2-28

Page 39

Figure 2-20. Example: The pulse output will maintain a 50 percent duty cycle for all frequencies

Installation

Figure 2-21. The Transient Terminal Block

50% Duty Cycle

8800-0546a

NOTE

When using pulse output, be sure to follow these precautions:

•Shielded twisted pair is required when the puls e output and 4–20 mA output are run in the same conduit or cable trays. Shielded wire will also reduce false triggering caused by noise pickup. Wiring should be 24 AWG or larger and not exceed 5,000 ft. (1500 m).

•Do not connect the powered signa l w iring to the test terminals. Power could damage the test diode in the test connection.

•Do not run signal wiring in conduit or open trays with power wiring, or near heavy electrical equipment. If needed, ground signal wiring at any one point on the sign al loop, such as the negative terminal of the power supply. The electronics housing is grounded to the spool.

•If the flowmeter is protected by the optional transient protector, you must provide a high-current ground connection from the electronics housing to earth ground. Also, tighten the ground screw in the bottom center of the terminal block to provide a good ground connection.

Captive Screws

Housing Ground

Transient Terminal Block Ground Screw

•Plug and seal all unused conduit connections on the electronics housing to av oid moistu re accumu l a tion in the te rminal sid e of the housing.

•If the connections are not sealed, mount the flowmeter with the conduit entry positioned downward for drainage . Install wiring with a drip loop, making sure the bottom of the drip loop is lower than the conduit connections or the electronics housing.

2-29

8800-0000A03D

Page 40

Rosemount Model 8800C Vortex Flowmeter

Figure 2-22. 4-20mA Wiring

 250

–

Power

–

Test

Ammeter

Communicator

Figure 2-23. 4–20 mA and Pulse Wiring with Electronic Totalizer/ Counter

Power

Supply

–

RL  250

–

Test

Ammeter

Communicator

Housing Ground

A HART-based communicator may be connected at any termination point in the signal loop. Signal loop must have 250 ohms minimum load for communications.

Housing Ground

(Max) Out

(1)

Typical

–

A HART-based communicator may be connected at any termination point in the signal loop. Signal loop must have 250 ohms minimum load for communications.

(1)Resistor m ay be internal or external

to Electronic Totalizer/Counter. dc Volts  Resistor < 0.12 A.

8800-0000A03C

30 V dc

Counte

r Input

8800-0000A03B

Figure 2-24. 4-20mA and Pulse Wiring with Electromechanical Counter

Power

Supply

–

RL  250

–

Test

Ammeter

Communicator

2-30

Housing Ground

Power

Supply

–

A HART-based communicator may be connected at any termination point in the signal loop. Signal loop must have 250 ohms minimum load for communication s.

(30 V max)

8800-0000A03A

Page 41

Installation

Remote Electronics If you order one of the remote electronics option s (options R10, R20,

R30, or RXX), the flowmeter assembly will be shipped in two parts:

1. The meter body with an adapter installed in the support tube and an interconnecting coa xi a l ca b le attach e d to it .

2. The electronics housing installed on a mounting bracket.

Mounting

Mount the meter body in the proc ess flow line as describ ed earlier in this sec ti on. Mou n t th e bracket a n d e lectroni cs housi n g in the desir e d location. The housing can be repositioned on the brac ket to facilitate field wiring and conduit routing.

Cable Connections

Refer to Figure 2-25 and the following instructions to connect the loo se end of the coaxial cabl e to the electronics housing. (See Remote Electronics Procedure on page 4-22 if connecting/disconnecting the meter adapter to the meter body.)

Figure 2-25. Remote Electronics Installation

Optional ½–14 NPT Conduit

Adapter or Cable Gland (Supplied by Customer)

Coaxial Cabl e

Meter Adapter

Union

Washer

Nut

Sensor Connection

Access Cover

Support Tube

Meter Body

Housing

Base

Ground

Connection

Housing

Adapter

Coaxial Cable

Electronics Housing

Mounting Bracket for Wall or 2-Inch Pipe

Optional ½–14 NPT Conduit Adapter or Cable Gland (Supplied by Customer)

8800-0470A02A, 0470A01B

2-31

Page 42

Rosemount Model 8800C Vortex Flowmeter

1. If you plan to run the coaxial cable in conduit, carefully cut the conduit to the desir ed length to provide for proper assembly at the housing. A junction box may be placed in the conduit run to provide a space for extra coaxial cable length.

2. Slide the conduit adapter or cable gland over the loose end of the coaxial cable and fas ten it to the adapter on the meter body support tube.

3. If using conduit, route the coaxial cable through the conduit.

4. Place a conduit adapter or cable gland over the end of the coaxial cable.

5. Remove the housing adapter from the electronics housing.

6. Slide the housing adapt er over the coaxial cable.

7. Remove one of the four housing base screws.

8. Attach the coaxial cable ground wire to the housing via the housing base ground screw.

9. Attach and secur ely ti ghte n the coaxial cable nut to t he co nnectio n on the electronics housing.

10. Align the housing adapter with the housing and attach with three screws.

11. Tighten the conduit adapter or cable gland to the housing adapter.

CAUTION

To prevent moisture from entering the coaxial cable connections, install the interconnecting coaxial cable in a single dedicated conduit run or use sealed cable glands at both ends of the cable.

Calibration Model 8800C Flowmeters are wet-cali brated at the factory and need no

further cali brat io n durin g ins tallat io n. The c ali brat ion fac tor (K-f act or) is stamped on each meter body and is entered into the electronics. Verification can be accomplished with a HART Communicator or AMS.

SOFTWARE CONFIGURATION

To complete the installation of the Model 8800C Vortex Flowmeter, configure the software to meet the req uirements of your applicat ion. If the flowmeter was pre-configured at the factory, it may be ready to install. If not, refer to Section 3: Operation.

2-32

Page 43

Installation

OPTIONS

LCD INDICATOR The LCD indicator (option M5) provides local indication of the output

and abbreviated diagnostic messages governing operation of the flowmeter. The indicator is located on the circuit side of the flowmeter electr on ics, leaving di rect acce s s to the sign a l termina l s. A n ex te n ded cover is required to ac commod a te the indic a to r. Figure 2-2 6 sh ows the flowmeter fitted with the LCD indicator and exte nded cover.

Figure 2-26. Model 8800C with Optional Indicator

Meter Assembly

Figure 2-27. Optional Liquid Crystal Display

Meter Cover

The indicator features an eight-character (and five alphanumeric) liquid crystal display that gives a direct reading of the digita l signal from the microprocessor. During normal operat ion, the display can be configured to alterna te between four readings:

1. Primary flow variabl e in engineering units

2. Percent of range

3. Totalized flow

4. 4–20 mA electrical curr ent output

Figure 2-27 show s the indicator display w ith all segments lit.

8800-0000B01A

A HART-based communicator can be used to change the engineering units displa yed on the indicator. (See Section 3: Operation for more information).

2-33

8800-0463B06A

Page 44

Rosemount Model 8800C Vortex Flowmeter

Installing the Indicator For flowmeter s ordered wit h the LCD indicat or, the indicator is shipped

installed. When purc hased sepa rately fr om the Model 8800C, you must install the indicator using a small instrument screwdriver and the indicator kit (part number 8800-5640-0002). The indicator kit includes:

• One LCD indicator assembly

• One extended cover with o-rin g install ed

• One connector

• Two mounting screws

• Two jumpers

Referring to Figure 2-26, use the following steps to install the LCD indicator:

1. If the flowmeter is installed in a loop, secure the loop and disconnect the power.

2. Remove the flowmeter cover on the electronics side.

NOTE

The circuit board is electrostatically sensitive. Be sure to observe handling precauti ons for static-sensitive components.

3. Insert the mounting screws into the LCD indicator.

4. Remove the two jumpers o n the ci rcuit board that co incide with the Alarm and the Security settings.

5. Insert the connect or into the Alarm / Security junction.

6. Gently slide the LCD ind icator onto the connector and tighten the screws into place.

7. Insert jumpers into ALARM and SECURITY positions on the face of the LCD indicato r.

8. Attach the extended cover and tighten at least one-third turn past o-ring contact.

NOTE

The indicator may be installed in 90-degree increments for easy viewing. One of the four connectors on the back of the indicator assembly must be posit ioned to fit into the ten-pin connector on the electronic board stack.

Note the following LCD temp erature limits:

Operating: –4 to 185 °F(–20 to 85 °C) Storage: –50 to 185 °F (–46 to 85 °C)

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Installation

Diagnostic Messages In addition to the output, the LCD indicator displays diagnostic

messages for troubleshooting the flowmeter. These messages are as follows:

SELFTEST

The flowmeter is in the process of performing an electronics self test.

FAULT_ROM

The flowmeter electr onics has undergone a EPROM checksum fault. Contact your Field Service Center.

FAULT_EEROM

The flowmeter electronics has undergone a EEPROM checksum fault. Contact your Field Service Center.

FAULT_RAM

The flowmeter electroni cs has undergone a RAM test fault. Contact your Field Service Center.

FAULT_ASIC

The flowmeter electronics has undergone a digita l signal processing ASIC update fault. Contact your Field Service Center.

FAULT_CONFG

The flowmeter electronics has lost criti cal configuration parameters. This message will be followed by information detailing the missing configuration parameters. Contact you r F ield Service Center.

FAULT_COPRO

The flowmeter electronics has detected a fault in the math coprocessor. Contact your Field Service Center.

FAULT_SFTWR

The flowmeter electronics has detected a non-re coverable fault in the software operation. Contact your Field Service Center.

FAULT_BDREV

The flowmeter electronics has detected incompatible electronics hardware. Contact your Field Service Center.

FAULT_LOOPV

The flowmeter electr onics has dete cted ins uffic ient voltage to power the sensor board. Most likely the cause is low voltage at transmitter 4–20 mA terminals. Contact your Field Service Center.

FAULT_SDCOM

The flowmeter electronics has detected an unexpected sigma-delta ASIC communications fault. Contact your Field Service Center.

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Rosemount Model 8800C Vortex Flowmeter

FAULT_SDPLS

The flowmeter electronics has detected a loss of flow data from the sigma-delta ASIC. Contact your Field Service Center.

FAULT_TASK(#)

The flowmeter electronics has detected a fatal error. Record (#) and contact your Field Service Center.

TRANSIENT PROTECTION The optional transient terminal block prevents damage to the

flowme te r from tran sients induced by lightning, w e lding, heavy electrical equipment, or switch gears. The transient protection electronics are located in the terminal block.

The transient terminal block meets the following specifications: ASME B16.5 (ANSI)/IEEE C62.41 - 1980 (IEEE 587) Categories A, B.

3 kA crest (8  20

s).

Installing the Transient Protector

6 kV crest (1.2  50 6 kV/0.5 kA (0.5

NOTE

The ground screw inside the terminal housing must be tightened for the proper operation of the transient protection. Also, a high-current ground connection to earth is required.

For flowmeters order e d with the transient protector option (T1), the protector is shi pped installed. When purchased separately from the Model 8800C, you must install the protector on a Model 8800C flowmeter using a small instrument screwdriver, a pliers, and the transient protection kit (part number 8800- 5106-1002 or 8800-5106-1004).

The tran sient pro t ec tion kit in cl udes the fo llowing:

• One transient protection terminal block assembly

• Three captive screws

• One ground screw

s).

s, 100 kHz, ring wave).

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Figure 2-28. The Transient Terminal Block

Installation

Use the following steps to install the transient protector:

1. If the flowmeter is installed in a loop, secure the loop and disconnect power.

2. Rem o ve the fiel d termin a l si de flowmeter cov er.

3. Remove the captive screws.

4. Use pliers to pull the terminal block out of the housing.

5. Inspect the connect or pins for straightness.

6. Place the new terminal block in position and carefully press it into place. The terminal block may have to be moved back and forth to get the connector pi ns started into the socke ts.

7. Tigh ten the ca p ti ve screw s.

8. Install and tighten the ground screw.

Captive Screws

Housing Ground

9. Replace the cover.

Transient Termina l Block Ground screw

8800-0000A03D

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Rosemount Model 8800C Vortex Flowmeter

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Section

3 Operation

Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3 -1

Process Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1

Diagnostics/Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-3

Basic Set u p . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3 -5

Advanced Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-12

Detaile d Set- U p . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-12

The software configuration settings for the Model 8800C can be accessed through a HART-based communicator or through a control system. The software functions for the HART Communicator are described in detail in this section of the manual. It provides an overview and summary of communicator functions. For more complete instructions, see the communicator manual.

Before operating the Model 8800C in an a ctual installation, you should review all of the factory set configuration data to ensure that they reflect the current application.

REVIEW Review the flowmeter configuration parameters set at the factory to

HART Comm. 1, 5

ensure accuracy and compatibility with your particular applicati on of the flowmeter. Once you have activated the Review function, scroll through the data list to check each variable in the configuration data list.

The last step of start-up and com missioning is to chec k the flowmeter output to ensur e th at the f lowmete r is ope rat ing p roperly. Model 8800 C digital outputs i nclude : flow rate , f low rate as a per cent of range, ana log output, vortex shedding rate, pulse rate, and totalized flow.

PROCESS VARIABLES

HART Comm. 1, 1

The process variables for the Model 8800C provide the flo w met er output. They measure flow in several ways that refle ct your needs and the configurati on of your flowmeter. When commissioning a flowmeter, review each process variable, its function and output, and take corrective action if necessary before using the flowmeter in a process application.

Flow – The actual measure d flow rate in the line. On the bench, the PV value should be zero. Check the units on the PV to make sure they are configured correc tly. If the units format is not corr ect , refer t o PV Units on page 3-14. Use the Process Variable Units function to select the units for your application.

Percent of Range – The process variable as a percentage of range provides a gauge as to wher e the current flow of th e meter is withi n the configured range of the flowmeter. For example, the range may be defined as 0 gal/min to 20 gal/mi n. If the curr ent flow is 10 gal /min, the percent of range is 50 percent.

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Rosemount Model 8800C Vortex Flowmeter

Analog Output – The analog output variable provides the analog value for the flow rat e. The analog output refers to the industry standard output in the 4–20 mA range . Check the analog output value against the actual loop reading given by a millimeter. If it does not match, a 4–20 mA trim is required . S ee D /A T rim (Digital-to-Analog Trim).

Totalizer – Totalizer pr ov i de s a reading of the tot a l flow of the flowmeter since the totalizer w as last reset. The total izer value should be zero during com missioning on t he bench, and the units should re flect the volume units of the flow rate. If the totalizer value is not zero, it may need to be reset.

Vi ew Other Variables– Pulse Output prov ides the a ctual pulse r eading from the meter if your meter includes the pulse output option. This digital value is always available, even without the pulse output option.

Shedding Frequency measur es the fre quency of vortex pu lses ar ound the shedder bar.

Totalizer Totalizer tallies the total amount of liquid or gas that has passed

HART Comm. 1, 1, 4

throug h th e fl o w meter sin ce the tot alizer was la st reset. It enables you to change the settings of the totalizer.

Total

HART Comm. 1, 1, 4, 1

Total — Provides the output reading of the totalizer. Its value is the amount of liquid or gas that has passed through the flowmeter since the totalizer was las t reset

Start

HART Comm. 1, 1, 4, 2

Start — Starts the totaliz e r countin g fro m it s curren t v al u e.

Stop

HART Comm. 1, 1, 4, 3

Stop — Interrupts the totalizer count until it is restarted again. This feature is often used during pipe cleaning or other maintenance operations.

Reset

HART Comm. 1, 1, 4, 4

Reset — Stops the totalizer and returns the totalizer value to zero.

NOTE

The totalizer value is saved in the EEPROM memory of the electr onics every three minutes if the temperature is less than 131 °F (55 °C) or every six minutes if the temperature is greater than 131 °F (55 °C). Should power to the tran smitt er be i nter rupted, the to talize r val ue will start at the last saved value when power is re-applied.

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Operation

DIAGNOSTICS/SERVICE Use the following functions to verify that the flowmeter is functioning

HART Comm. 1, 2

properly, or when you suspect co mponent f ai lure or a probl em wit h loo p performance, or when instructed to do so as part of a troubleshooting procedure. Initiate each test with the HART Communicator or other HART-based communications device.

Test/Status Under Test/Status choose from View Status or Self Test.

HART Comm. 1, 2, 1

View Status

HART Comm. 1, 2, 1, 1

View Status allows you to view any error messages that may have occurred.

Self Test

HART Comm. 1, 2, 1, 2

Although the Model 8800C perfor ms continuous self-diagnos tics, you can initiate an immediate diagnostic to check for possible electronics failure.

Self Test checks proper communications with the transmitter and provides diagnostic capabilities for transmitter problems. Follow on-screen instructions if problems are detected, or check the appropriate appendix for error messages relating to your communicator.

Loop Test Loop T est verif ies the output of the flowmeter, the integrity o f the loop ,

HART Comm. 1, 2, 2

and the operation of any recorders or similar devices. Conduct the loop test after the flowmeter is installed in the field.

If the meter is located in a loop with a control system, the loop will have to be set to manual control before the loop test is performed.

Verify that the ammeter in the test loop reads 4 mA. If the output is 4 mA, end the loop test. If the output is not 4 mA, the flowmeter may require a digital trim. If the digital trim does not set the 4 mA output, the electroni cs ma y be malfunctioning.

Pulse Output Test Pulse Output Test is a fixed frequency mode test that checks the

HART Comm. 1, 2, 3

integrity of the pulse loop. It tests that all connections are good and that pulse output is runn ing on the loop.

Flow Simulation Flow Simulation enables you to check the electronics functionality.

HART Comm. 1, 2, 4

This can be verified with eit her the Flow Simulation Internal or Flow Simulation External method.

Flow

HART Comm. 1, 2, 4, 1

Shows the flow value in current engineering units for the flow simulation.

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Rosemount Model 8800C Vortex Flowmeter

Shedding Frequency

HART Comm. 1, 2, 4, 2

Shows the shedding frequency for the flow simulation.

Configure Flow Simul ation

HART Comm. 1, 2, 4, 3

Allows you to configure your flow simulation (internal or external).

Simulate Flow Internal

HART Comm. 1, 2, 4, 3, 1

The simulate flow internal function will automatically disconnect the sensor and enable you to select the configuration of the internal simulate (fixed or varying).

Fixed Flow

HART Comm. 1, 2, 4, 3, 1, 1

The fixed flow simulation signal can be entered in either a percent of range or flow rate in current engineering units.

Varying Flow

HART Comm. 1, 2, 4, 3, 1, 2

The minimum and maximum flowrate can be entered in either percent of range or as a flow rate in current engineering units. The ramp time can be entered in seconds fr om a minimum of 0.533 seconds to a maximum of 34951 seconds.

Simulate Flow External

HART Comm. 1, 2, 4, 3, 2

Simulate flow extern al allows you to disconnect the senso r electronically so an external frequency source can be used.

Enable N o rmal Flow

HART Comm. 1, 2, 4, 4

Enable normal flow allows you to exit the flow simulation mode (internal or external) and return to normal operation mode.

Mode

HART Comm. 1, 2, 4, 5

Mode allows you to view which flow simulation mode you are in:

• Int er n a l (flow simu lation – internal)

• Snsr Offln (flow simulation – exte rnal)

• Norm Flow (normal flow operation)

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Operation

D/A Trim D/A Trim (Digital-to-Analog Trim) enables you to check and trim

HART Comm. 1, 2, 5

the analog output i n a single function. If the analog output is trimmed, it will be scaled proportionally through the range of the output.

To trim the digital-to-analog output, initiate the D/A Trim function and connect an ammeter to the loop to m easure the actual analog output of the meter. Follow the on-screen functions to complete the task.

Scaled D/A Trim Scaled D/A Trim enables you t o c alibrat e t he flow meter analog out put

HART Comm. 1, 2, 6

using a different scal e than the standard 4-20 mA output scale. Non-scaled D/A Trimming (described above), is typically performed using an ammeter where calibration values are entered in units of milliamperes. Both non-scaled D/A trim ming and scaled D/A trimming allow you to trim the 4-20mA output to approximately ±5% of the nominal 4mA end point and ±3% of the nominal 20mA end point. Scaled D/A Trimming allows you to trim the flowmeter using a scale that may be more convenient base d upon your method of measurem ent.

For example, it ma y be more convenient for you to make current measurements by direct voltage readings across the loop resistor. If your loop resistor is 500 Ohms, and you want to calibrate the meter using voltage measurements made across this resisto r, you could rescale (select CHANGE on the 275) your trim points from 4-20mA to 4-20mA x 500 ohm or 2-10 VDC. Once your scaled trim points have been entered as 2 and 10, you can now calibrate your flowmeter by entering voltage measurements directly from the voltmeter.

Shed Freq at URV Shed Freq at URV function gives the shedding frequency

HART Comm. 1, 2, 7

corresponding to your URV.

BASIC SETUP The Model 8800C must be configured for certain basic variables in order

HART Comm. 1, 3

to be operational. In most cases, all of these variables are pre-configured at the factory. Configuration may be required if your Model 8800C is not configured or if the configuration variables need revision.

Tag Tag is the qui ck es t way to identify a nd disting u is h be tween

HART Comm. 1, 3, 1

flowmeters . Flowmete rs c an be tagged acco rdi ng to the requi rement s of your application. The tag may be up to eight characters long.

Service Type The flowmeter can be used for liquid or gas/steam applications, but it

HART Comm. 1, 3, 2

must be co n f ig ured specifically fo r the application . If the flowme ter is not configured fo r the proper service type , readings will be inaccurate. Select the appropriate Service Type for your application:

• Liquid

• Gas/Steam

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Rosemount Model 8800C Vortex Flowmeter

PV Units The Model 8800C flowmeter displays Volumetric, Mass, STD/Normal,

HART Comm. 1, 3, 3

Velocity, or Speci a l un i ts as dete rmined by yo u r a pplicat ion. Use the Process Variable Units (PV) function to select the units for your application and needs.

NOTE

After changing flow units, be sure to send data to the transmitter so that the associated variables (4–20 mA points, etc.) will be recalculated by the microprocessor. The Model 8800C recalculates all variables that depend on units. You may then change any of the remaining parameters.

The following flow unit options are available:

Volumetric Units

HART Comm.

1, 3, 3, 1

Volumetric Units (1 bbl = 42 gal)

gal/s impgal/s gal/min impgal/min gal/h impgal/h gal/d impgal/d ACFM L/s ACFH L/min ACFD L/h bbl/min L/d bbl/h ACMM bbl/d ACMH

ACMD MACMD

Mass Units

HART Comm. 1, 3, 3, 2, 1

Mass Flow Units

If you select a Mass Units option, you must enter process density in your configuration. (1 ston = 2000 lb; 1 ton = 1000 kg)

lb/s ston/h lb/min ston/d lb/h met ton/h lb/d met ton/d kg/s kg/min kg/h kg/d

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Operation

Process Density

HART Comm. 1, 3, 3, 2, 2

Process Density and Density Units are required only if you have designated mass units for your flow rate units. You will first be prompted for density units. It is required for the conversion from volumetric units to mass units. If you select volumetric units or special units, process den s it y is not req u ir ed .

For example, if you have set flow units to kg/sec rather than gal/sec, a density is required to convert the measured volumetric flow into the desired mass flow.

NOTE

If mass units are configured as special units , process density must be figured into the special units conversion number. Process density as a separate value will be de-activated.

If mass units are chosen, you must enter the density of your process fluid into t he s oft w are . Be ca ref ul to ente r t he correc t d ensi ty. The mass flow rate is calculated using this use r-entered density, and any error in this number will cause error in the mass flow measurement. If fluid density is changing over time, it is recommended that volumetric flow units be used.

STD/Normal Flow Units

HART Comm. 1, 3, 3, 3, 1

Standard/Normal Flow Units

SCFM SCFH NCMM NCMH NCMD

The model 8800C allows you to measure Standard or Normal Flow Units. Configure the software in one of two ways:

1. Enter Density Ratio to convert from actual flow rate to standard flow rate.

2. Enter the process and base con ditions. (The Model 8800C electronics will then calculate the density ratio for you).

NOTE

Be careful to calculate a nd enter t he corre ct conve rsion facto r. Standard flow is calculated with the conversi on fact or you enter. Any error in the factor entered will result in an error in the standard flow measurement. If pressure and temperature changes over time, use actual volumetr ic flo w unit s . The M odel 8800C do es not compen sate for changing temperatur e and pressure.

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Rosemount Model 8800C Vortex Flowmeter

Density Ratio

HART Comm. 1, 3, 3, 3, 2

Density Ratio is used to convert act ual volumetric flow to standard volumetric flo w ra tes based on the following equat ions:

Conversion factor

dens ity at actual (flowing) conditions

------------------------------------------------------------------------------------------------------------= density at s dard (base)tan conditions

TbP



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

TfP



Calculate Density Ratio

HART Comm. 1, 3, 3, 3, 3

Calculate Density Ratio will calculate the density ratio (shown above) based on user entered process and base conditions.

Operating Conditions

HART Comm. 1, 3, 3, 3, 3, 1

Tf = absolute temperatur e at actual (flowing) conditions in degrees Rankine or Kelvin. (Th e transmitter will conve rt from degrees Fahrenheit or degrees Cel sius to degrees Rankine or Kelvin respectively .)

= absolute pressure at actual (flowing) conditions psia or KPa

absolute. (The transmitter will convert from psi, bar, kg/sqcm, kpa, or mpa to psi or kpa for calculation. Note that pressure val u es mu st be absolute.)

= compressibility at actual (flowing) conditions (dimensionless)

3-8

Base Conditions

HART Comm. 1, 3, 3, 3, 3, 2

Tb = abso lute t emp eratu re at sta ndard (b ase ) co nditi ons degrees Ranki ne or Kelvin. (The transmitter will convert from degrees Fahrenheit or degrees Cels ius to degr ees Ranki ne or Kelv in res pec tivel y.)

= absolute pressure at standard (base) conditions psia or KPa

absolute. (The transmitter will co nvert from psi, bar , kg/ sqcm, kpa, or mpa to psi or kpa for calculation. Note that pressure values must be absolute.)

= compre s si b ility at stan d ard (base) conditions (dime n s io nless)

Example

Configure the Model 8800C to display flow in standard cubic feet per minute (SCFM). (Fluid is hydroge n flowi n g at conditions of 170 °F and 100 psia.) Assume base conditions of 59 °F and 14.696 psia.)

Conversion fact or

518.57 °R 100 psia1.0006

---------------------------------------------------------------------------------- - 5.587==

629.67 °R 14.7 psia1.0036



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Operation

Velocity Units

HART Comm. 1, 3, 3, 4

ft/sec m/sec

Special Units

HART Comm. 1, 3, 3, 5

Special Units allows you to create flow rate units that are not among the standard options. They can be mass or volumetric units. Configuration of a special unit involves entry of these values: base volume unit, base time unit, user defi ned unit and conversion number. Suppose you want the Model 8800C to display flow in barrels per minute instead of gallons per minute, and one barrel is equal to

31.0 gallons.

• Base volume unit: gal

• Base time unit: min

• User defined unit: br

• Conversion number: 31.0

See the specific variables listed below for more information on setting special u n its.

NOTE

The HART -based communicator will display the converted reading. The actual unit specification does not appear.

Base Volume Unit

HART Comm. 1, 3, 3, 5, 1

Base Volume Unit is the unit from which the conversio n is made. You must select one of the HART Communicat or defined unit options:

• Gallons (gal)

• Liters (L)

• Imperial gallons (Impgal)

• Cubic meters (Cum)

• Barrels (bbl) where 1 standard bbl=42 gal

• Cubic Feet (cuft)

Base Time Unit

HART Comm. 1, 3, 3, 5, 2

Base Time Unit provides the time unit from which to calculate the special units . For example , if your specia l units is a volume per minute , select minutes. Choose from the following units:

• Seconds (s)

• Minutes (min)

• Hours (h)

• Days (d)

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Rosemount Model 8800C Vortex Flowmeter

User Defined Unit

HART Comm. 1, 3, 3, 5, 3

User Defined Unit is a format variable that provides a record of the flow units to which you are converting. The LCD on the Model 8800C will display the actual units you define. The HART communicator will simply display “SPCL.” There are four ch aracters available to store the new units designation.

Conver sion Number

HART Comm. 1, 3, 3, 5, 4

Conversion Number is used to relate base units to special units. For a straight conversion of volume units from one to another, the conversion number is the number of base units in the new unit.

Fo r exa mple , if you ar e conver tin g fr om gall ons to barrel s and there are 31 gallons in a barrel, the conversion factor is 31. The conversion equation is as follows (where barrels is the new volume unit):

1 barrel=31 gallons

NOTE

If reviewing parameters, the number is show n as the conversion factor from base units to speci al units (i.e., 1/31).

Range Values Range Values enables you to maximize resolution of analog output.

HART Comm. 1, 3, 4

The meter is most accura te w h en operated within the expect ed flow ranges for your application. Setting the range to the limits of expected readings will maximize flowmeter performance.

The range of expected readin gs is defined by the Lower Range Value (LRV) and Upper Range Value (URV). Set the LRV and URV wi thin t he limits of flowmeter operation as defined by the li ne size and process material for your application. Values set outside that range will not be accepted.

Select each variable and enter the appropriate value. The new range is defined by these values.

Process T emperature Process Temperat ure is needed for the electronics to compensate for

HART Comm. 1, 3, 5

thermal expansion of the flowmeter as the process tem p erature differs from the reference temperature. Process temperature is the temperature of the liquid or gas in the line during flowmeter operation.

NOTE

The temperature may also be changed under Calculate Density Ratio .

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Operation

Mating Pipe ID (Inside Diameter)

The Pipe ID (Inside Diam eter ) of th e pipe adj acent to th e flo w mete r can cause entrance effect s that may alte r flowmeter re adings . You must specify the exact inside diameter of the pipe to correct for these effects.

HART Comm. 1, 3, 6

Enter the appropriate value for this variable. Pipe ID values fo r s chedule 10, 40, and 80 p iping ar e gi ven in Table 3-1.

If the piping in your application is not one of these, you may need to contact the manufacturer for exact Pipe ID.

Table 3-1. Pipe IDs for Schedule 10, 40, and 80 Piping

Pipe Size

Inches (mm)

½ (15) 0.674 (17.12) 0.6 22 (15.80) 0.546 (13.87)

1 (25) 1.097 (27.86) 1.049 (26.64) 0 .957 (24.31)

1½ (40) 1.682 (42.7 2) 1.610 (40.89) 1.500 (38.10)

2 (50) 2.157 (54.79) 2.067 (52.50) 1 .939 (49.25)

3 (80) 3.260 (82.80) 3.068 (77.93) 2 .900 (73.66) 4 (100) 4.260 (108.2) 4.026 (102.3) 3.826 (97.18) 6 (150) 6.357 (161.5) 6.065 (154.1) 5.716 (145.2) 8 (200) 8.329 (211.6) 7.981 (202.7) 7.625 (193.7)

10 (250) 10.420 (264.67) 10.020 (254.51) 9.562 (242.87) 12 (300) 12.390 (314.71) 12.000 (304.80) 11.374 (288.90)

Schedule 10

Inches (mm)

Schedule 40 Inches (mm)

Schedule 80 Inches (mm)

Damping Damping changes the response time of the flowme ter to smooth

HART Comm. 1, 3, 7

variations in outp ut readings caused by rapid changes in input. Damping is applied to the Analog Output, Process Variable, and

Percent Range. This will not affect the Pulse Output or Total.

NOTE

If the vortex shedding frequency is slower than the damped value selected, no dam ping is applied.

The default damping value is 2.0 seconds. This can be reset to any value between 0.2 and 255 seconds.

Determine the appropriate damping setting based on the necessary response time, signal stabilit y, and other require ments of the loop dynamics in your system.

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Rosemount Model 8800C Vortex Flowmeter

ADVANCED FUNCTIONALITY

The Model 800C enables you to configure the flowmeter for a wider range of applications and special situations. These functions are grouped as follows under Detailed Set-Up:

DETAILED SET-UP • Characterize Meter

HART Comm. 1, 4

• PV Units

• Configure Outputs

• Signal Processing

• Device Information

Characterize Meter The Meter Body variabl es provide conf igurati on data that are uni que to

HART Comm. 1, 4, 1

your Model 8800C. The settings of these variables can effect the compensated K-factor on which the primary variable is based. These data are provided during factory configuration and should not be changed unless the physi cal make-up of your Model 8800C is change d.

Mating Pipe I.D.

HART Comm. 1, 4, 1, 1

The inside diameter of the pipe adjacent to the flow meter can cause entrance effects that may alter flowmeter readings. The exact inside diameter of the pipe mus t be specifi ed to co rre ct for th ese effe cts. Enter the appropriate val u e for this variable.

Mating Pipe ID values for schedule 10, 40, and 80 piping are given in Table 3-1. If the piping in your application is not one of these, you ma y need to contact the manufact urer for exact Pipe ID.

K-Factor

HART Comm. 1, 4, 1, 2

The HART Communicator provides information on Reference and Compensated K-factor values.

The Referenc e K-fact or is f actory s et ac cor ding to t he act ual K- factor for your application. It should only be changed if you replace parts of the flowmeter. Contact your Rosemount representative for details.

The Compensated K-factor is based on the reference K-factor as compensated for the g iven proc ess temper atur e, wet ted materi als , body number, and pipe ID. Comp ensated K -factor is an in f or m a tional variable that is calculated by the ele ctronics of your flowmeter.

Wetted Material

HART Comm. 1, 4, 1, 3

Wetted Material is a factory set configuratio n variable that reflects the constructi on of your flowmeter.

• 316 SST

• Hastelloy-C

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Operation

Meter Body Number

HART Comm. 1, 4, 1, 4

Meter Body Number is a factory set configuration variable that stores the body number of your par ticular flowmeter and the type of construction. The meter body number is found to the right of the body number on the meter body tag, which is attac hed to the support tube of the m e te r b ody.

The format of this variable is a number followed by an alpha numeric character. The number designates the body number. The alpha numeric character desi gnates the meter body type . There are three options for the alpha numeric character:

1. None – Indicates welded met er construction

2. A – Indicates welded meter construction

3. B – Indicates cast construction

Flange Type

HART Comm. 1, 4, 1, 5

Flange Type enables you to specif y t he type of f lange o n t he f lowmet er for later refe rence. This varia ble is preset at the facto ry but can be changed if necessary.

• Wafer

• ASME B16.5 (ANSI) 150

• ASME B16.5 (ANSI) 300

• ASME B16.5 (ANSI) 600

• ASME B16.5 (ANSI) 900

• PN 10

• PN 16

• PN 25

• PN 40

• PN 64

• PN 100

• PN 160

• JIS 10k

• JIS 20k

• JIS 40k

• Special

Installation Effect

HART Comm. 1, 4, 1, 6

Installation Effect enables you to compensate the flowmeter for installation effects. See reference graphs located in Te chnical Data Sheet 00816-0100-3250 for the percent of K-factor shift based on entrance effec ts of upstream disturbances. This value is entered as a percentage of th e ra n ge of +1.5% to -1.5%.

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Rosemount Model 8800C Vortex Flowmeter

PV Units Refer to the previous pages for more details regarding the following:

HART Comm. 1, 4, 2

Volumetric Units, Mass Units, STD/Normal Units, Velocity Units, and Special Units.

Config ur e O ptions The Model 8800C is digitally adjusted at the factory using precision

HART Comm. 1, 4, 3

equipment to ens ure a ccur acy. You should be able to install and operate the flowmeter without a D/A Trim.

Analog Output

HART Comm. 1, 4, 3, 1

For maximum accuracy, calibrate the analog output and, if necessary, trim for your system loop. The D/A Trim procedure alters the conversion of the digital signal into an analog 4–20 mA output.

Range Val ues

HART Comm. 1, 4, 3, 1, 1

Range Values enables you to maximize resolution of analog output . The meter is most accura te w h en operated within the expect ed flow ranges for your application. Setting the range to the limits of expected readings will maximize flowmeter performance.

Loop Test

HART Comm. 1, 4, 3, 1, 2

Loop T est verif ies the output of the flowmeter, the integrity o f the loop , and the operation of any recorders or similar devices. Conduct the loop test after the flowmeter is installed in the field. If the meter is located in a loop with a control system, the loop will have to be set to manual control b efore the lo op te st is perfo r m e d .

Verify that the ammeter in the test loop reads 4 mA. If the output is 4 mA, end the loop test. If the output is not 4 mA, the flowmete r ma y require a digital trim (see D/A Trim (Digital-to-Analog Trim). If the digital trim does not set the 4 mA output, the receiving meter may be malfunctioning.

Alarm Jumper

HART Comm. 1, 4, 3, 1, 3

Alarm Jumper lets you verify the alarm jumper setting.

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Operation

D/A Trim (Digital-to-Analog Trim)

HART Comm. 1, 4, 3, 1, 4

Digital-to-Analog Trim enables you to check and trim the analog output in a single fu n c tion. If the an a log outp u t is trimmed, it will be scaled proportionally through the range of the output. To trim the digital-to-a nalog output, initiate the D/A Trim func tion and connect an ammeter to the loop to measure the actual analog output of the meter. Follow the on-scre en functions to complete the ta sk.

Scaled D/A Trim

HART Comm. 1, 4, 3, 1, 5

Scaled D/A Trim enables you t o c alibrat e t he flow meter analog out put using a different scal e than the standard 4-20 mA output scale. Non-scaled D/A Trimming (described above), is typically performed using an ammeter where calibration values are entered in units of milliamperes. Both non-scaled D/A trim ming and scaled D/A trimming allow you to trim the 4-20mA output to approximately ±5% of the nominal 4mA end point and ±3% of the nominal 20mA end point. Scaled D/A Trimming allows you to trim the flowmeter using a scale that may be more convenient base d upon your method of measurem ent.

Recall Factory Trim

HART Comm. 1, 4, 3, 1, 6

Recall Factory Trim enables you to return to the original factory trim values.

Pulse Output

HART Comm. 1, 4, 3, 2

Pulse Output reports the frequenc y of the pulse output.

NOTE

The HART Communicator will a llow c onfigura tion o f the pul se featur es even if the pulse opti on (O ption P) was not ordered.

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Pulse Output Scale

HART Comm. 1, 4, 3, 2, 1

The Model 8800C comes with an optional pulse output option (P). This enables the flowmeter to output the pulse rate to an external control system, total izer, or other device. If th e flowm eter w a s ordered with t he pulse mode opti on , it may be co n figured fo r either pu lse scaling (bas e d on rate or unit) or shedding frequency outpu t. Ther e are three met hods for configuring the pulse output:

• Pulse Scaling — Rate

• Pulse Scaling — Unit

• Direct (Shedding Frequency)

Pulse Scaling – Rate

HART Comm. 1, 4, 3, 2, 1, 1

This mode allows you to configure the pulse output based on a flow rate. For example, set 100 gallons per minute = 10,0 00 Hz. (The user enterable parameters are flow rate and frequency.)

1. Enter a flow rate of 100 gallons per minute.

2. Enter a frequency of 10,000 Hz.

Pulse Scaling – Unit

HART Comm. 1, 4, 3, 2, 1, 2

This mode changes the frequency output to represent the flow rate. If you are using an external totalizer or the frequenc y output, it may be important to be able to scal e the frequency output to familiar terms. The scaled output equates one transistor switch closure pulse to a selectable number of volume units. For example, 1 puls e = 1 gallon.

The pulse output is an isolated switch-closure frequency output signal proportional to flow. The frequency limits are as follows:

• Maximum Frequency = 10,000 Hz

• Minimum Frequency = 0.0000035 Hz (1 pulse/79 hours)

• Duty Cycle = 50%

• For Frequenc ies  0.1 Hz the pulse width will equal 5 seconds

Example: Pulse Output Frequency = 0.0333 Hz (1 pulse/30 seconds)

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Figure 3-1. Example: The pulse output will maintain a 50 percent duty cycle for all frequencies

Operation

50% Duty Cycle

8800-0546a

NOTE

The scaled pulse output is designed to operate between 0 and 10,000 Hz. The electron ics wil l not acc ept a conve rsion f act or that woul d r esult in a pulse frequency outside that range. Determine the minimum conversion factor value by dividing the upper range value (in units of volume per second) by 10,000 Hz.

The best choice for this parameter depends on the required resolution, the number of digits in the totalizer, the extent of range required, and the maximum counter input f requency.

Direct (Shedding Frequency)

HART Comm. 1, 4, 3, 2, 1, 3

This mode provides the vort ex shedding frequency as output. In this mode, the software does not compensate the K-factor for effects such as thermal expansion or differing mating pipe inside diameters. Scaled pulse mode must be used to com pensate the K-factor fo r thermal expansion and mating pipe effects.

Pulse Output Test

HART Comm. 1, 4, 3, 2, 2

Pulse Output Test is a fixed frequency mo de test that checks the integrity of the pulse loop. It tests that all connections are good and that pulse output is runn ing on the loop.

HART Output Multidrop configuration refers to the connection of several flowmeters

HART Comm. 1, 4, 3, 3

to a single communicati ons transmission line. Communication occurs digitally between a HART-based communicator or control system and the flowmeters. Multidrop mode automatically deactivates analog output of the flo wmeters . Using t he HART communic ations p rotocol, u p to 15 transmitters can be connected on a single twisted pair of wires or over leased phone line s.

The use of a multidrop ins tallation re quires cons iderati on of the update rate necessary from each transmitter, the combination of transmitter models, and the length of the transmission line. Multidrop installations are not recommended where intrinsic safety is a requirement. Communication with the transmitters can be accomplished with commercially available Bell 202 modems and a host implementing the HART protocol. Each trans mi tter is identified by a unique add ress (1-15) and responds to the com mands defined in the HART protocol.

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Rosemount Model 8800C Vortex Flowmeter

Figure 3-2 shows a typical multidrop network. This figure is not intended as an installation diagram. Contact Rosemount product support with specific requirements for multidrop applications.

Figure 3-2. Typical Multidrop Network

RS-232-C

Bell 202

Modem

Power

Supply

3051-0087B

NOTE

The Model 8800C is set to poll address ze ro at t he fac tory, allowing it to operate in the sta n d ard poin t- to-poin t m a n n er with a 4–20 mA output signal. To activate mu ltidrop communication, the transmitter p oll address must be changed to a number between 1 and 15. This change deactivates the 4–20 mA analog output, setting it to 4 mA, and di sables the failure mode alarm signal.

3-18

Poll Address

HART Comm. 1, 4, 3, 3, 1

Poll Address enables you to set the poll address for a multi-dropped meter. The poll address is used t o ident ify each m eter on th e mult i- drop line. Follow the on- screen instructions to set the address at a number from 1 to 15. To set or change the flowmeter address, establish communication with the selected Model 8800C in the loop.

Auto Poll

HART Comm. OFF LINE FCN

When a HART-based commu nicator is powered up and auto polling is on, the communicator automatically polls the flowmeter addresses to which it is connect ed. If the address is 0, the HART-based communicator enters its normal online mode. If it detects an address other than 0, the communicator finds each device in the loop and lists them by poll address and tag. Scroll through the list and select the meter with which you need to communicate.

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Operation

If Auto Poll is off, the flow m eter must have the poll address set to 0 or the flowmeter will not be found. If a single connected device has an address other than zero and auto polling is off, the device will not be found either.

Burst Mode Configuration

The Model 8800C includes a burst mode function that broadcasts the primary variable or all dynamic variables approximately three to four times a second. The burst mode is a special ized function used in very specific applications. The burst mode function enables you to select the variables to broad cast over the burst mode and to select the burst mode option.

Burst Mode

HART Comm. 1, 4, 3, 3, 3

The Burst Mode variable enables you to set the Burst Mode to the needs of your applicatio n. Options for the Burst Mode setting inc lude:

Off–Turns off the Burst M ode so that no data are broadcast on the loop. On–Turns Burst Mode on so that the data sele cted under Burst Option

are broadcast over the loop. Additional command options may appear that are reserved and do not

apply to the Model 8800C.

Burst Op tion

HART Comm. 1, 4, 3, 3, 4

Burst Option enables you to select the variables to broadcast over the burst transmitter. Choose one of the following options:

PV–Selects the process variable for broadcast over the burst transmitter.

Pe rcent Range/Curre nt–Selects the proces s variable as per cent of r ange and analog output variables for broadcast over the burst transmitter.

Process vars/crnt–Selects the process variables and analog output variables for broadcast over the burst transmitter.

Local Display

HART Comm. 1, 4, 3, 4

The Local Display function on the Model 8800C allows you to select which variables are shown on the optional (M5) local display. Choose from the following variables:

• Flow

• Percent of Range

• Output Current

• Total

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Rosemount Model 8800C Vortex Flowmeter

Signal Processing The Model 8800C and its HART-based communications feature enable

HART Comm. 1, 4, 4

you to filter out noi se and other frequencies from the transmitter signal. The four user-alterabl e p aram eters associated wit h the digital signal processing on the M odel 8800C include low-pass fi lter corner frequency, low-flow cutoff, trigger level, and damping. These four signal conditioning functions are configured at the factory for optimum filtering over the range of flow for a given line size and service type (liquid or gas). For most applications, leave these parameters at the factory settings. Some applications may require adjustment of the signal processing parameters.

Use signal proce ssing on ly w h en recom mended in th e Troubl es hooting section of this manual. Some of the problems that may require signal processing include:

• High output (output saturation)

• Err a ti c output wi th or witho u t fl ow presen t

• Incorrect output (with known flow rate)

• No output or low output with flow present

• Low total (missing pulses)

• High total (e xt ra pulse s)

If one or more of these conditions exist, and you have checked other potential sources (K-factor, service type, low er and upper range values, 4–20mA trim, pulse scaling factor, process temperature, pipe ID), refer to Section 4: Hardware and Software Maintenance and Troubleshooting procedures. Remember that the factory default settings can be re-established at any time with Filter Restore. If problems persist after signal processing ad justments, consult the factory.

3-20

Optimize Flow Range

HART Comm. 1, 4, 4, 1

Optimize Flow Range affects the follow ing variables:

• Flow

• Low Flow Cutoff

• Sig/Tr

• Auto Adjust Filter

Flow

HART Comm. 1, 4, 4, 1, 1

Flow is the ac tual m easured fl ow rat e in t he li ne. On the be nch, th e PV value should be zero. Check the units on the PV to make sure they are configured correct ly. See PV Units if the units format is not corr ect. Use the Process Variable Units function to select the units for your application.

Low Flow Cutoff

HART Comm. 1, 4, 4, 1, 2

Low Flow Cutoff is shown in engineering units.

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Operation

Sig/Tr (Signal/Trigger Level Ratio)

HART Comm. 1, 4, 4, 1, 3

The Signal to Trigger Level Ratio is a variable that indica tes the flow signal strength to trigger level ratio. This ratio indicates if there is enough flow signal strength for the meter to work properly. For accurate flow measurement, the ratio should be greater than 4:1. Values greater that 4:1 will allow increased filtering for noisy applications. F or ratios greater than 4:1, with sufficient density, the Auto Adjust Filter funct ion can be utilized to optimize the measurable range of the fl ow me ter.

Ratios less than 4:1 may indicate applications wit h very low densities and/or applications with excessive filtering.

Auto Adjust Filter

HART Comm. 1, 4, 4, 1, 4

The Auto Adjust Filter is a function that can be used to optimize the range of the flowmeter based on the density of the fl uid. The electroni cs uses process density to calculate the minimum measurable flow rate, while retaining at least a 4:1 signal to the trigger level ratio. This function will also reset all of the filter s to optimize the flowmete r performance over the new range.

Manual Filter Adjust

HART Comm. 1, 4, 4, 2

Manual Filt er Adjus t allows you to manually adjust the following settings: Low Flow Cutoff, Low Pass Filter, and Trigger Level, while monitoring flow and or sig/tr.

Flow

HART Comm. 1, 4, 4, 2, 1

Sig/Tr (Signal/Trigger Level Ratio)

HART Comm. 1, 4, 4, 2, 2

The Signal to Trigger Level Ratio is a variable that indica tes the flow signal strength to trigger level ratio. This ratio indicates if there is enough flow signal strength for the meter to work properly. For accurate flow measurement, the ratio should be greater than 4:1. Values greater that 4:1 will allow increased filtering for noisy applications. F or ratios greater than 4:1, with sufficient density, the Optimize Flow Range function can be utilized to optimize the measurable range of the fl ow me ter.

Ratios less than 4:1 may indicate applications wit h very low densities and/or applications with excessive filtering.

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Rosemount Model 8800C Vortex Flowmeter

Low Flow Cutoff

HART Comm. 1, 4, 4, 2, 3

Low Flow Cutoff enables you to adjust the filter for noise at no flow. It is set at the factory to handle most applications, but certain applications ma y require adj ust ment eit her to expand measur abilit y or to reduce noise.

The Low Flow Cutoff offers two modes for adjustment:

• Increase Range

• Decrease No Flow Noise

It also includes a dead band such that once flow goes below the cutoff value, output does not return to the normal flow range until flow goes above the dead band. The dead band extends to approximately 20 percent above the low flow cutoff value. The dead band prevents the output from bouncing between 4mA and normal f low range if the flow rate is near the low flow cutoff value.

Low Pass Filter

HART Comm. 1, 4, 4, 2, 4

The Low Pass Filter sets the low-pass filter corner frequency to minimize the effect s of high frequency noise. It is factory set based on line siz e and servic e type. Adju stments m ay b e re q u ired only if you are experiencing problems. See Section 4: Troubleshooting and Maintenance.

The Low Pass Filter corner frequency variable offers two modes for adjustment:

• Increase filtering

• Increase sensitivity

Trigger Level

HART Comm. 1, 4, 4, 2, 5

Trigger Level is configured to reject noise w ithin the flow range while allowing normal amplitude variation of the vortex signal. Signals of amplitude lower than the Trigger Level setting are filtered out. The factory setting optimizes noise rejection in most applications. Trigger Level offers two modes for adjustment:

• Increase filtering

• Increase sensitivity

NOTE

Do not adjust this parameter unless directed to do so by a Rosemount Technical Support Representative.

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Operation

Filter Restore

HART Comm. 1, 4, 4, 3

Filter Restore enables yo u to return al l of th e signal co n d itionin g variables to t heir defa ult values . Shoul d the filter settings get confused, select Filter Restore to restore the default settings and provide a new starti ng point.

Damping

HART Comm. 1, 4, 4, 4

Damping functi on ch a nges the respons e ti m e of the flow meter to smooth variatio ns in output readi ngs caused by rapi d c hanges in i nput.

The default damping value is 2.0 seconds. Damping can be reset to any value between 0.2 and 256 seconds.

The appropriate damping set ting can be determined based on the necessary res ponse ti me, si gnal st abil ity, and other requi rements of the loop dynamics in your system.

Process Density

HART Comm. 1, 4, 4, 5

Process Density and Density Units are required only if you have designated mass units for your flow rate units. See Process Density on page 3-7 or detailed information.

Device Information Information variables are used for identifi cation of flowmeters in the

HART Comm. 1, 4, 5

field and to store information that may be useful i n service situations. Information variables have no effect on flowmeter output or process variables.

Manufacturer

HART Comm. 1, 4, 5, 1

Manufacturer is an informational variable provided by the factory. For the Model 8800C , the Ma nufacturer is Rosemount.

Tag

HART Comm. 1, 4, 5, 2

Tag is the quickest variable to identify and distinguish between flowmeters . Flowmete rs c an be tagged acco rdi ng to the requi rement s of your application. The tag may be up to eight characters long.

Descriptor

HART Comm. 1, 4, 5, 3

Descriptor is a longer user-defined variable to assist with more specific ide ntification of the particular flowmete r. It is usually used in multi-flowmeter environments and provides 16 characters.

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Rosemount Model 8800C Vortex Flowmeter

Message

HART Comm. 1, 4, 5, 4

The Message variable provides an even longer user-defined variabl e for identification and other purposes. It provides 32 characters of information and is stored with the other configuration data.

Date

HART Comm. 1, 4, 5, 5

Date is a user-defined variable that provides a place to save a date, typically used to store the last date that the transm itter configuration was cha nged.

Write Protect

HART Comm. 1, 4, 5, 6

Write Protect is a read-onl y informational vari able that reflects the setting of the hardware security switch. If Write Protect is ON, configuration data are protected and cannot be changed from a HART-based communicator or control system. If Write Protect is OFF, configuration data may be changed using the communicator or control system.

Revision Numbers

HART Comm. 1, 4, 5, 7

Revisions Numbers are fixed informational variables that provide the revision number for different elements of your HART Communicator and Model 8800C. These revision numbe rs may be required when calling the factory for support. Revision numbers can only be changed at the factory and are provided for the following elements:

Universal Rev

HART Comm. 1, 4, 5, 7, 1

Universal Rev – Designates the HART Universal Command specif ic a tion to whic h the tran smitter is d e signed to co n fo rm.

Transmitter Rev

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

Tran smitter Re v – Designates the revision for Model 8800C specific command identification for HART compatibility.

Software Rev

HART Comm. 1, 4, 5, 7, 3

Software Rev – Designates the internal software revision level for the Model 8800C.

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Operation

Hardware Rev

HART Comm. 1, 4, 5, 7, 4

Hardware Rev – Designates the revision level for the Model 8800C hardware.

Final Asse mbly Number

HART Comm. 1, 4, 5, 7, 5

Final Assembly Number – Factory set number that refers to the electronics of your flowmeter. The number is configured into the flowmeter fo r later reference .

Device ID

HART Comm. 1, 4, 5, 7, 6

Device ID – Factory-defined unique identifier for transmitter identification in the software. Device ID is not user c hangeable.

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Rosemount Model 8800C Vortex Flowmeter

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Section

4 Hardware and Software

Maintenance and Troubleshooting

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1

Troubleshooting Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-3

Advanced Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . page 4-6

Testing Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-9

Hardware Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . .page 4-10

Return of Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 4-27

Table 4-1 provides summari zed troubleshooting suggestions for the most common problems that occur during operation. The symptoms of metering problems include:

• Communications problems with a HART-based communicator.

• Incorrect 4–20 mA output.

• Incorrect pulse output.

• Error messages on HART-based communicator.

• Flow in pipe but no transmitter output.

• Flow in pipe with incorrect transm itter output.

• Output with no actual flow.

NOTE

The Model 8800C sensor is extremely r eliable and sho uld not ha ve to be replaced. Please consult the factory before removing the sensor.

SAFETY MESSAGES Instructions and procedures in this section may require special

precautions to ensure the safety of the personne l performing the operations. Please refer to the following safety messages before performing any in this section.

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Rosemount Model 8800C Vortex Flowmeter

Explosions could result in death or serious injury:

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

• Make sure only qual i fied personnel perform the installation.

• Do not remove the tr ansmi tte r cov e r in e xpl os iv e atmo spher es wh en the c ircuit

is alive.

• V eri fy that the operat i ng atmosphere of the transmitter i s consistent with the appropriate hazardous locations certifi cations.

• Both transmitter covers must be fully engaged to meet explosion-proof requirements.

The sensor cavity could contain line pressure if an abnormal failure has occurred inside the meter body. Depressurize flow lin e before removing the sensor nut.

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Hardware and Software Maintenance and Troubleshooting

TROUBLESHOOTING TABLES

The most common problems experienced by users of the Model 8800C are listed in Table 4-1 along with potentia l causes of the problem and suggested correc tive actions. See Adva nced Troubleshooting on page 4-6 if the problem you are experiencing is not listed here.

Table 4-1. Basic Troubleshooting - Model 8800C Smart Vortex Flowmeter

Symptom Corrective Action

Communication problems with HART-based Communicator

Incorrect 4–20 mA Output

Incorrect Puls e Ou tp ut

Error Messages on HART-based Communicator

Flow in Pipe, No Output Basics

• Check f or a mi nimum of 12 V dc at transmitter terminals.

• Check communi cations loop with HART-based communicator.

• Check for l oop resistor (250 to 1000 ohms).

• Check for transmitter in multidrop mode.

• Check for 12 V dc at transmitter terminal.

• Check URV, LRV, Density, Special Units, LFC–

compare these in puts with the sizing program results. Correct configuration.

• Perfo rm 4–20 mA loop test.

• Check that 4–20 mA output is correct.

• Check pulse counter specifications.

• Check pulse mode and scaling factor. (Make sure

scaling factor is not inverted).

• See alphabetical listing in the Error Messages Tabl e for the comm unicator in Appendi x C: HART Communicator.

• Check to mak e t he s ure that the met er is i nst alle d with th e a rr ow in th e di r e c ti on of proc ess flow.

• Perform basic checks for Incorrect 4–20 mA Output Problem (see Incorrect 4–20 mA Output).

• Check and correct configuration parameters in this order: K-factor, service type, materials, units, process temperature, damping value, 4–20 mA trim, meter body number, density, pulse mode, pulse scaling, line size, pipe diameter, LRV, URV, LP corner, trigger level, low flo w cutoff.

• Check sizing. Make sure flow is within measurable flow limits.

• Refer to Advanced Troubleshooting on page4-6.

• See Appendix E: Electronics Verification for

electronics verification pro cedure.

Electronics

• Run a self test with the Model 268/HART Communicator.

• Using sensor simul ator, ins ert test s i gnal.

• Check configuration, LFC, trigger level, STD vs.

actual flow.

• Replace electronics.

• Check for transmitter in burst m ode.

• Remove pulse connection if you have a three wire

pulse installation.

• Replace electronics.

• Check for corrosion on terminal block.

• Replace electronics if necessary.

• Refer to Advanced Troubleshooting on page 4-6.

• See Appendix E: Electronics Verification for

electroni cs verification procedure.

• Perform pulse test.

• Select pulse scaling so that pulse output is less

than 10,000Hz at URV (Model 8800C only).

Application Problems

• Calculate expected frequ ency (see Appendix E: Electronics Verification). If actual f req uency i s the same, check configuration.

• Check that application meets viscosity and speci fi c grav i ty requir em ents for the li n e si ze.

• Recalculate back pressure requirement. If necessary and possible, in crease back pressure, flow rate, or operating pre ssure.

Sensor

• Check torque on sensor nut (32 ft-lb).

• Inspect coaxial sensor cable for cracks. Replace

if necessary.

• Check that sensor impedance >10 Megohms. Replace sensor if necessary (Rep l a c i ng t h e Sensor on page 4-15).

• Measure sensor capacitance at SMA connector (100–200pF).

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Rosemount Model 8800C Vortex Flowmeter

Symptom Corrective Action

Flow in Pipe, Incorrect Output

Basics

• Perform basic checks for Incorrect 4–20 mA Output Prob lem (see Incorrect 4–20 mA Output on page 4-3).

• Check and correct configuration parameters i n this order: K-factor, service type, materials, units, process temperature, damping val ue, 4–20 mA trim, meter body number, density, pulse mode, pulse scaling, line size, pipe diameter, LRV, URV, LP corner, trigger level, and low flow cutoff.

• Check sizi ng. Make sure flow is within measurable flow limits.

• Refer to Advanced Troubleshooting on page 4-6.

• See Appendix E: Electronics Verification for

electroni cs verification procedure.

Application Problems

• Calculate e xp ecte d fre quenc y. If actual freq uen cy is the same, check configu ration.

• Check to make sure the meter is not installed backwards (Arrow on meter pointing upstream is backwards). Re-install the meter if necessary.

• Check that application mee ts viscosity and specific gravity requirement s for the line size.

• Recal culate back pres sure re quire ment. If ne cessary and possible, increase back pressure, flow rate, or operating pressure.

• Check for gasket or other obstruction disturbing flow. Reinstall meter if necessary.

• Pump pulsations disturbing flow. Adjust signal processing parameters.

Vibration Problem

• Adjust signal processing parameters.

• Rotate me ter 90 degrees.

• Add support to the line nea r the meter to damp

the vibration. When the v ortex meter is set for gas or steam se rvice and the vibr ation l e v el s are gr eat er than ½ g, the Low Flow Cutoff value (LFC) may need to be increased to eliminate undesirab l e output at no flow conditions. The level of LFC increase depends on the vibration lev el and meter size. LFC is unique f or each application. When flow begins, the flow signal become s much larger t h an t he vi br ation sign al and the meter will lock onto the flow signal and give an accurate flow output.

50/60 Hz Measurem ent

• Make sure electronics mounting s crews (3) are securely installed.

• May indicate electrical or magnetic interference. Check meter g r ound. Measure voltage levels between 4–20 mA and pulse outputs and the electronics housing. Common mode voltage < 30 Vrms.

• If the meter is loca te d nea r a larg e moto r or electric furnace try different meter ori entations to reduce the noise. Magnetic fields must be less than 5 gauss .

• In remote moun t ins t all a tio ns, try integral mou n t to see if problem is corrected. Measure ac voltage from electroni cs housing to SMA connector. The v ol tage must be <1Vrms .

Sensor

• Sensor should resist removal because the interference fit has extremely tight tolerances. Repeated removal and installation of the sensor will loosen it. If sensor is loose, replace the sensor.

• Inspect and tighten sensor connector if necessary.

• Inspect coaxial sensor cable for cracks. Replace if necessary.

• Check torqu e on sensor nut (32 ft-lb).

• Check that sensor impedance >10 Megohms.

Replace sensor if necessary (see Repl acing the Sensor on page4-15).

• Measure sensor capacitance at SMA connector. (100–200pF)

4-4

Page 79

Symptom Corrective Action

Output with No Actual Flow Basics

• Perform basic checks for Incorrect 4–20 mA Output Prob lem (see Incorrect 4–20 mA Output on page 4-3).

• Check and correct configuration parameters i n this order: K-factor, service type, materials, units, process temperature , dampi ng v al ue ,4 –20 mA trim, meter body number, dens ity, pulse mode, pulse s cali ng, line size , pipe diameter, LRV, URV, LP corner, trigger level, low flow cutoff.

• Check sizi ng. Make sure flow is within measurable flow limits.

• Using a HART-based communicat or, read the shedding fr equency.

• Refer to Advanced Troubleshooting on page 4-6.

Hardware and Software Maintenance and Troubleshooting

50/60 Hz Measurem ent

• Make sure electronics mounting s crews (3) are securely installed.

• May indicate electrical or magnetic interference. Check meter g r ound. Measure voltage levels between 4–20 mA and pulse outputs and the electronics housing. Common mod e voltage <30 Vrms.

• If the meter is loca te d nea r a larg e moto r or electric furnace try different meter ori entations to reduce the noise. Magnetic fields must be less than 5 gauss .

• In remote moun t ins t all a tio ns, try integral mou n t to see if problem is corrected. Measure ac voltage from electroni cs housing to SMA connector. The v ol tage must be <1Vrms .

Vibration Problem

• Adjust signal processing parameters:

Adjust low flo w cutoff to higher flow rates (if th e application allows). Move the low flow cutoff up one notch and measure the process variable. Continue moving the low flow cutoff until the problem is correct ed or the flow range i s too limited for the application. Adjust the trigger l evel up; t he de f ault trigger le v el i s four . Adj ust it one notch and measure the proces s variable. Continue mov ing the trigger level until t he output reaches zero or the trigger le v el reaches a value of se v en. Be sure to c hec k the proce ss variable with the process flo wing once you are done adjusting the trigger level.

• Rotate the meter 90 degrees.

• Add support to the line nea r the meter to damp

the vibra ti on.

Application Problems

• Pump pulsations disturbing flow. Adjust signal processing parameters.

• Add flow straightener.

• Check all valves and make sure they are closed.

4-5

Page 80

Rosemount Model 8800C Vortex Flowmeter

ADVANCED TROUBLESHOOTING

Figure 4-1. Electronics Test Points

The Model 8800C electronics provides several advanced troubleshooting features. These features enhance your abili ty to look inside the electronics and can be helpful for troubl eshooting inaccurate readings . As shown in Figure 4-1, there are several test points located on the electronics.

GND

Shedding Freq Out

TP1

Test F req IN

A digital represe n tation of the filtered sensor shedding frequency is available on the “SHEDDING FREQ OUT” pins shown in Figure 4-1. The electronics are capable of internally gener ating a flow signal that may be used to simulate a sensor signal to perform electronics verification wit h the Model 275 or AMS inte rface . The simul ated s ignal amplitude is based on the transmitter required minimum process density. The signal being simulated can be one of several profiles – a simulated signal of constant frequency or a simulated si gnal representati ve of a ram ping flow rate. The electronics verification procedure is d escr ibed in d etai l in Appen dix E: Ele ctroni cs Verification. To verify the electroni cs, y ou can input a f requency on the “TEST FREQ IN” and “GND” pins to simulate flow via an external si gnal source suc h as a frequency generato r. To analyz e and/or troubleshoot the electronic s, an oscilloscope (set for AC coupling) and a Model 275 or AMS interface are required. Figure 4-2 is a block diagram of the signal as it flows from th e sensor to the microprocessor in the electronics.

8800-0000A04C

4-6

Page 81

Figure 4-2. Signal Flow

Sensor

Hardware and Software Maintenance and Troubleshooting

TP1 Shedding Frequency Output

Digital Filter

Microprocessor

Charge

Amplifier

External

Test

Frequency

Input

Amplifier/ Low Pass

Filter

A-to-D Converter Containing Frequency Generator

TP1 TP1 is the vortex shedding signal after it has gone through the charge

amplifier and low pass filter stages and into the input of the sigma delta A-to-D converter ASIC in the electronics. The signal strength at this point will be in the mV to V olt range.

TP1 is easily measured with standard equipment. Figures 4-3, 4-4, and 4-5 show ideal (clean) waveforms and waveforms

that may c ause the output t o be inac curat e. Pl ease c onsul t the f act ory i f the waveform you detect is not similar in principle to these waveforms.

8800-0572D

4-7

Page 82

Rosemount Model 8800C Vortex Flowmeter

Figure 4-3. Clean Signals

3.45 V

Figure 4-4. Noisy Signals

Vortex Signal (TP 1 )

Trigger Level

Shedding Frequency Output

8800-0572A

Vortex Signal (TP1)

Figure 4-5. Improper Sizing/Filtering

3.45 V

V ortex Signal

(TP1)

Shedding Frequency Output

Trigger Level

Shedding Frequency Output

8800-0572B

Trigger Level

8800-0572C

4-8

Page 83

Hardware and Software Maintenance and Troubleshooting

Shedding Fre quency Out Shedding frequency out is probably the easiest point to measur e and

interpret. It is the final waveform after all filtering has taken place. It is the flow signal that is sent to the microprocessor to be processed into outputs. C h ec k th i s point fir st , as it w ill allow you to see the fina l waveform (after filtering) before it goes to the microprocessor.

Symptom Corrective Action

Clean Signals at TP1 and Shedding Frequency Out, But Incorrect Output

No Pulse at Shedding Frequency Out

Noisy Signal at Shedding Frequency Out

Missing Pulses at Shedding Frequency Out

Basics

• Perform basic checks f or incorrect 4–20 mA output probl em (see Basic Troubleshooting Model 8800C Smart Vortex Flowmeter on page 4-3).

• Perform basic check for pulse output.

• Check and correct configura tion parameter s in

this order: K-factor, service type, mat eri al s, units, process temperatur e, damping value, 4–20 mA trim, filter tracking, density, density ratio, pulse mode, pulse scaling, line size, pipe diameter, LRV, URV, LP corner, trigger level, and low flow cutoff.

Basics

• Check TP1.

• Check elect r onics via Flow Simulation Mode

(see Appendix E: El ectronics Verification).

• Check electronics with frequency ex ternal generator (see Appendix E: Elec tronics Verification).

Basics

• Simulate signal with frequency generators or Flow Simulation Mode (see Appendix E: Electroni cs Verifica tio n ).

Basics

• Low back pres sure.

• Viscosity too high.

• Density too low.

• Refer to Advanced Troubleshooting on page 4-6.

• See Appendix E: Electronics Verification for

electronics verification procedure.

• Refer to Table 4-1 for further troubleshooting.

• Check that sens or i m pedance >10 Megohms .

Replace sensor if necessary. (See Replacing the Sensor on page4-15.)

• Measure sensor capacitance at SMA connector (100–200pF).

• Optimize filter (gas); increase fil tering of low pass filter.

• Consult factory.

• Check sensor.

• Too much filt ering. Check si gnal/trigger level.

TESTING PROCEDURES U se the tes t fu n c tions to ve r ify that the flowmet er is funct ioning

4-9

Page 84

Rosemount Model 8800C Vortex Flowmeter

HARDWARE REPLACEMENT

The follo w in g procedures will he lp you disas semble an d as s emble the Model 8800C hardware if you have followed the trouble shooting guide earlier in this section of the manual and determined that hardware components need to be replaced.

NOTE

Failure of the Model 8800 housing, electronics, terminal block, LCD indicator, or entire assembly requires replacement with the Model 8800C housing, electronics, terminal block and optional LCD indicator. The Model 8800 can be ide ntifi ed on the SST ta g or by vis ually chec king to see if the conduit e ntr ies are o n the top of the housin g . See Repla cin g the Electronics Housing on page 4-13, for further information.

NOTE

Use only the procedures and new parts specifically referenced in this manual. Unauthorized procedures or parts can affec t product performance and the output signal used to control a process, and may render the instrument dangerous. Direct any questions concerning these procedures or parts to Rosemount Inc.

NOTE

Flowmeters should not be left in service once they have been determined to be inoperable.

NOTE

Process shoul d be ve nted bef ore t he met er body is r emoved fr om se rvice for disassembly.

4-10

Page 85

Hardware and Software Maintenance and Troubleshooting

Replacing the Terminal Block in the Housing

Figure 4-6. Terminal Block Assembly

To replace the Field Terminal Bloc k in the housing, you will need a small, fla t head screwdriver. Use the following procedure to repla ce the terminal block in the housing of the Model 8800C.

NOTE

Remove power before removing the electron ics cover.

Remove the Terminal Block

1. Turn off the electric power to the Model 8800C.

2. Unscrew the cover.

Terminal Block

O-Ring

Cover

Captive Screws

8800-0463A01Z

3. Disconnect the wires from the field terminals. Be sure to secure them out of the way.

4. Remove the ground screw (middle of the terminal block) if transient protection (Option T1) is installed.

5. Loosen the captive screw s.

6. Pull outward on the blo ck to remove it from the housing.

Install the Terminal Block

1. Align the terminal block over the captive screw holes in the terminal block side of the electronics housing.

2. Slowly press the terminal block into place. Do not force the block into the housing. Check the screw alignment if it does not g l i d e into plac e.

3. Tighten the three captive screws to anchor the terminal block.

4. Connect the wires to the appropriate field terminals.

5. Reinstall and tighten the transient ground screw if you have the transient option (Option T1).

6. Screw on and tighten the cover.

See Safety Messages on page 4-1 for complete w arn i ng i nformation .

4-11

Page 86

Rosemount Model 8800C Vortex Flowmeter

Replacing the Electronics Boards

Figure 4-7. Electronics Boards Assembly

The Model 8800C electronics boards may need to be replaced if they have been damaged or otherwise become dysfunctional. Use the following procedures to replace electronics boards in the Model 8800C. You will need a small flat head screwdriver and pliers.

NOTE

The electronics boards ar e electros tatica lly sensit ive . Be sure to observe handling precauti ons for static-sen sitive components.

NOTE

Remove power before removing the electron ics cover.

Remove the Electronics Boards

1. Turn off the electric power to the Model 8800C.

2. Unscrew and remove the electronics board compartment cover. (Unscrew and remove the LCD cover i f you have the LCD option).

3. If the meter has the LCD indicator option, loosen the two screws. Remove the LCD and the connector from the electronics board.

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

5. Use p liers to ca re fu lly remov e the sens o r ca b le clip from the electronics.

6. Use the two screw heads on the right- and left-hand sides of the board to s lo w ly pull th e electron ics boar ds out of th e housing.

See “Safety Messages” on pa ge4-1 for complete w arning information.

4-12

Electron i c s B oards

8800-0000A01A

Page 87

Hardware and Software Maintenance and Troubleshooting

Install the Electronics Boards

1. Verify that elec tric power to the Model 8800C is off.

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

3. Slowly press the boards into place. Do not force the boards down. Check th e sc rew alig n ment if the y d o n o t glide int o p la ce.

4. Use extreme caution to insert sensor cable clip into the electronics board.

5. Tighten the captive screw s to anchor the two electronics boards.

6. Reinsert jumpers into proper location.

7. If the meter has LCD option, insert the connector header int o the LCD board.

• Put the connector through the bezel on the electronics board set.

• Carefully press the indicator onto the connector.

• Tighten the two screws that retain the L CD indicator.

• Insert the alarm and security jumpers in the correct location.

8. Replace the electronics board compartment cover.

Replacing the Electronics Housing

The Model 8800C electronic s housing can be replaced easily when necessary. Use the following procedur e:

Tools Needed

•5/32-inch (4 mm) hex wrench

•5/16-inch open end wrench

• Screwdriver to disconnect wires

• Tools to disconnect conduit

NOTE

Remove power before removing the electron ics housing.

Remove the Electronics Housing

1. Turn off the electric power to the Model 8800C.

2. Disconnect the wires and conduit from the housing.

3. Loosen the screw on the access cover (on the support tube). See Figure 4-8.

4. Remove the access cover.

See Safety Messages on page 4-1 for complete w arn i ng i nformation .

4-13

Page 88

Rosemount Model 8800C Vortex Flowmeter

Figure 4-8. Electronics Housing Access Cover

5. Use a hex wrench to loosen the housing rotation screws (at the base of the electronics housing) by turning screws clockwis e (inward) until they will clear the bracket.

Figure 4-9. Housing Rotation Screws

Access Cover Screw

Access Cover

8800-0002F04B

Sensor Cable Nut

1.5 inches maximum (40mm)

Housing Rotation Screws

8800-0002E04B

6. Slow ly pull th e electron ics hous in g n o m o re than 1. 5 inches from the top of the support tube.

7. Loosen the sensor cable nut from the housing with a 5/16-inch open end wrench. See Figure 4-9.

NOTE

Lift the electronics housing until the sensor cable is disconnected. Do not pull the housing more than 1.5 inches (40 mm) from the top of the support tube. Damage to the sensor may occur if this sensor cable is stressed.

4-14

Page 89

Hardware and Software Maintenance and Troubleshooting

Install the Electronics Housing

1. Verify that power to the Model 8800C is off.

2. Screw the sensor cable ont o the base of the housing.

3. Tighten the sensor cable with a 5/16-inch open end wrench.

4. Place the electronics housing into the top of the support tube.

5. Tighten the housing rotati on screws with a hex wrench.

6. Place the access cove r on the support tube.

7. Tigh ten the sc re w o n th e access co v er.

8. Connect conduit and wires.

9. Apply power.

Replacing the Sensor The sensor for the Model 8800C is a sensitive instrument that should

not be removed unless there is a problem with it. If you must replace the sensor, follow these procedures closely. Please consult the

factory before removing the sensor.

NOTES

Be sure to fu ll y check all other troubleshooting possibilitie s be fo re removing the sensor.

Do not remove the sensor unless i t is determined that a problem exists with the senso r i tself. The sensor may not fit on t he po st if it i s r emoved and replaced more than two or three times, or replaced incorrectly.

Also, please note that the sensor is a complete assembly and cannot be further disassembled.

Tools Needed

•5/32-inch (4 mm) hex wrench

•5/16-inch open end wrench

•7/16-inch open end wrench

•3/4-inch open end wrench (for 3- and 4-inch [80 and 100 mm]

SST wafers)

• 11/8-inch open end wrench (for all other models)

• Suction or compressed air device

• Small, soft bristle brush

• Cotton swabs

• Appropriate cleaning liquid: water or cleaning agent

There are two support tubes fo r the Mo del 8800C. The removabl e support tube is for wafer meters

/2- through 4-inch (15 through 100 mm) and all flanged meters. The integral support tube is for 6- and 8-inch (150 and 200 mm) waf er meter s . The proc edure for repla cing the sensor contains details for both the removable and integral support tubes.

4-15

Page 90

Rosemount Model 8800C Vortex Flowmeter

Sensor Compatibility Guide

1. Determine the sensor serial number. The sensor serial number is located on the top of the se nsor.

2. Verify meter body number designator as either “none”, “A”, or “B”. The body number i s fou nd on the meter body ta g. Ex. 101467, 101467A, or 101467B.

Meter body designators:

none = welded body with sensor s/n < 30000. A = welded body with sensor s/n B = integral cast body with sensor s/n



30000







30000



3. Using a Model 275 HART communicator, verify the electronics software revision. Use HART fast key 1,4,5,7,3.

4. With the infor mation obtain ed from steps 1, 2, and 3, use the table below to make the necessary adjustments .

Sensor

Serial

Number

< 30000 None or A No adjustment





(1) To enter low pass filter adjustment into Model 8800 electronics, use (2) To enter low pass filter adjustment into rev 3 or 4 electronics, use (3) To enter meter body designa t or i nto rev 5 elect r onics, us e HART

Meter Body

Designator

B Not Compatible.

None or A Move low pass

B No adjustment

HART fast key sequence 1,4,2,5,3. HART fast key sequence 1,4,4,2,4. fast key sequence 1,4,1,4.

Electroni cs Model

8800

necessary.

Purchase new

sensor.

filter one step

from defaul t to a

LOWER

frequency.

necessary.

(1)

Electroni cs Model

8800A Software

Rev 3 or 4

No adjustment

necessary.

Not Compatible.

Purchase new

Move low pass

filter one step

from defaul t to a

LOWER

frequency.

No adjustment

necessary.

(2)

sensor.

Electronics Model

8800A Software

Enter meter body

designator “none”

into electronics.

Not Compatible.

Purchase new s ensor.

body designato r

Enter meter body

designator “B”

into electronics.

(3)

Rev 5

Enter meter

“A” into

electronics.

4-16

Page 91

Hardware and Software Maintenance and Troubleshooting

Replacing the Sensor: Remov a ble and Integral Support Tubes

The following procedure applies to flowmeters equipped with a removable support tube, i.e. all flanged meters and ½- through 4-inch (DN 15 through 100) wafer meters.

1. De-pressurize the flow line.

NOTE

Sensor cavity could contain line pressure if an abnormal failure has occurred inside the meter body. De-pressurize flow li ne before removi ng the sensor nut.

2. Remove the electronics housing (see Replacing the Electronics

Removabl e Support Tube (for1/2- to 4-in. wafer meters and all flanged meters)

3. Loosen the four support tube anchor bolts with a 7/16-inch open

4. Remove the support tube.

Figure 4-10. Removable Support Tube Assembly

Housing on page 4-13).

• For meters with a removable support tube (1/2- to 4-in. [15 to 100 mm] wafer meters and all flanged meters), follow steps 3-5.

end wrench. See Figure 4-10.

Anchor Bolts

Removable

Support Tube

Sensor Nut

Sensor

Access Cover

Meter Body

5. Proceed to st ep 8.

• For meters with an integral support tube, (6- to 8-in. [100 to 200 mm] wafer meters), follow steps 6-7.

8800-0463A02B

See Safety Messages on page 4-1 for complete w arn i ng i nformation .

4-17

Page 92

Rosemount Model 8800C Vortex Flowmeter

Integral Support Mount (for 6- to 8-in. wafer meters)

6. Remove access cover. See Figure 4-11.

Figure 4-11. Integral Support Tube Assembly

Sensor Cable Nut

Support Tube

Sensor Nut

Wafer Meter

Body

Access Cover

Sensor

7. Proceed to st ep 8.

8. Loosen and remove the sensor nut from the sensor cavity with a

/8-inch open end wrench. (Use a 3/4-inch open end wrench for 3-

and 4-inch [80 and 100 mm] SST wafers.)

9. Lift the sensor fr om the sensor cavity. Be very careful to lift the sensor straight up. Do not rock, twist, or tilt the sensor during removal; this will dama ge the engagement diaphragm.

8800-0463A02B

4-18

Page 93

Hardware and Software Maintenance and Troubleshooting

Cleaning the Sealing Surface

Before installing a sensor in the meter body, clean the sealing surface by completing the following procedure. The metal o-ring on the sensor is used to seal the sensor cavity in the event that process fluid should corrode through the meter body and enter th e sensor cavit y. Be sure not to scratch or otherwise damage any part of the sensor, sensor cavity, or sensor nut threads. Damage to these parts may require replacement of the sensor or meter body, or may render the flowmeter dangerous.

NOTE

If you are install ing a senso r that has been used befo re , cl ean t he metal o-ring on the sensor using the procedure above. If you are installing a newly purchased sensor, cleaning the o-ring is not necessary.

1. Use a suction or compressed ai r device to remove any loose particles from the sealing surface and other adjacent areas in the sensor ca vity.

NOTE

Do not scratch or deform any part of the sensor, sensor cavity, or sensor nut threads.

2. Carefully brush the sealing surface clean with a soft bristle brush.

3. Moisten a cotton swab with an appropriate cleaning liquid.

4. Wipe the sealing surface. Repeat several times if necessary with a clean cotton swab until there is minimal dirt residue picked up by the cotton swab.

Figure 4-12. O-Ring Sealing Surface in Sensor Cavity

Sensor Installation

Sealing Surface

8800-0473A01A

1. Care fu lly plac e sensor ov e r the post in th e sensor ca v ity.

2. Insure that the sensor is centered on the post. See Figure 4-13 for an example of improper installation and Figure 4-14 for an example of proper installation.

4-19

Page 94

Rosemount Model 8800C Vortex Flowmeter

Figure 4-13. Sensor Installation – Improper Alignment

Improper Alignment

(before seating)

Top View

of Flowmeter

Sensor centerline

is not aligned

with flowmeter

centerline. Dama ge

to sensor will occur.

Figure 4-14. Sensor Installation – Proper Alignment

Top View

of Flowmeter

Sensor

Sensor cavity in flowmeter

Sensor not

properly aligned

SENSORS-sens05a

Proper Alignment

(befor e se a ting)

Sensor

4-20

Sensor cavity in flowmeter

Sensor centerline

must be aligned

with flowmeter

centerline

SENSORS-sens05b

Page 95

3. Sensor should remain as close to vertical as possible when

Figure 4-15. Sensor Installation – Applying Force

4. Manually push down on the sensor by applying equal pressure for

5. Screw the sensor nut into the sensor cavity. Tighten the nut

Hardware and Software Maintenance and Troubleshooting

applying force to seat. See Figure 4-15.

Pressure

Apply Force

With Hand Until

Sensor is Seated

Sensor centerline must be aligned with flowmeter

centerline

Sensor properly seated

engagement on t o t h e p o st.

with a 1

/8-inch open end torque wrench to 32 ft-lbs. (Use a 3/4-inch

open end wrench for 3- and 4-inch [80 and 100 mm] SST wafers).

SENSORS-sens05c.

NOTE

The sensor nut must be tightened to 32 ft-lbs. for accurate flowmeter operati on.

6. Replace the support tube.

7. Tighten the four bolts that anchor the support tube in place with a

/16-inch open end wrench.

8. Install the flowmeter electronics housing. See Install the Electronics Housing on page 4- 15.

4-21

Page 96

Rosemount Model 8800C Vortex Flowmeter

Remote Electronics Procedure

If the Model 8800C electronics housing is mounted remotely, some replacement procedures are different than for the flowmeter with integral electronics. The following procedures are exactly the same:

• Replacing the Field Terminal Block (see page 4-11).

• Replacing the Electronics Boards (se e pa ge4-12).

• Replacing the Sensor (see page 4-15).

To disconnect the coaxial cable from the meter body and electronics housing, follow the instructions below.

Disconnect the Coaxial Cable at the Meter

1. Remove the access cover on the meter body support tube .

2. Loosen the three housing rotation screws at the base of the electronics housing with a hex wrench by turning the screws clockwise (inward) until they will clear the bracket.

3. Loosen and remove the sensor cabl e nut from the union using

/16-inch open end wrench.

4-22

Page 97

Figure 4-16. Coaxial Cable Connections

Access Cover Screw

Hardware and Software Maintenance and Troubleshooting

NOTE

Do not pull the adaptor more than 1.5 inches (40 mm) from the top of the support t ube. Damage to the sensor may occur if t he sensor cable is stressed.

½ NPT Optional Conduit Adapter or Cable Gland (Supplied by Customer)

Coaxial Cable

Meter Adapter

Union

Washer Nut

Sensor Connection

Access Cover

Support Tube

Meter Body

8800-0470A02C

4-23

Page 98

Rosemount Model 8800C Vortex Flowmeter

Detach th e M et e r A d a p te r

The above instructions w ill provide access to the meter body. Use the following steps if it is necessary to remove the coaxial cable:

1. Loosen the two screws that hold the union onto the meter adapter and pull the union away from the adapter.

2. Loosen and remove the coaxial cable nut from the other end of the union.

3. Loosen the conduit adapter or cable gland from the meter adapter.

Attach the Meter Adapter

1. If you are using a conduit adapter or cable gland, slide it over the plain end of the coaxial cable (the end without a ground wire).

2. Slide the meter adapter over the coaxial cable end.

3. Use a 5/16-inch open end wrench to securely tighten the coaxial cable nut onto one end of the union.

4. Place the union onto the two screws extending out of the meter adapter and tighten the two screws.

Connect the Coaxial Cable at the Meter

1. Pull the sensor cable out of the support tube slightly and securely tighten the sensor cable nut onto the union.

NOTE

Do not stretch the sensor cable over 1.5 inches (40 mm) beyond the top of the support tube . Damage to the sensor may occur i f the sensor cabl e is stressed.

2. Place the meter adapter int o the top of the support tube and line up the screw holes.

3. Use a hex wrench to turn the three adapter screws outward to engage the support tube.

4. Replace the access co ver on the support tube.

5. Tighten the conduit adapter or cable gland into the meter adapter.

4-24

Page 99

Hardware and Software Maintenance and Troubleshooting

Coaxial Cable at the Electronics Housing

Disconnect the Coaxial Cable from the Elect ronics Housing

1. Loosen the three screws f rom the housing adapter.

2. Remove the adapter from the housing.

3. Loosen and remove the coaxial cable nut from the base of the

Remove the Coaxial Cable

1. Remove the coaxial cable ground wire from the housing adapter.

Figure 4-17. Remote Electronics Exploded View

electr onics hou sing.

Electronics Housing

Housing

Base

Ground

Connection

Housing Adapter

Housing Adapter Screws

Conduit Adapter

2. Loosen the conduit adapter (or cable gland) from the housing adapter.

Attach the Coaxial Cable

1. Route the coaxial cable through the conduit (if you are using conduit).

2. Place a conduit adapter over the end of the coaxial cable.

3. Remove the housing adapter from the electronics housing (if attac h ed ).

4. Slide the housing adapt er over the coaxial cable.

5. Remove one of the four housing base screws.

6. Attach the coaxial cable ground wire to the housing via the housing base ground screw.

8800-0470B01A

4-25

Page 100

Rosemount Model 8800C Vortex Flowmeter

Connect the Coaxial Cable

1. Attach and secur ely ti ghte n the coaxial cable nut to t he co nnectio n on the electronics housing.

2. Align the housing adapter with the housing and attach with three screws.

3. Tighten the conduit adapter to the housing adapter.

Changing the Housing Orientation

The entire electr onics housing may be rotated in 90 degree increments for easy viewing. Use the following steps to change the housing orientation:

1. Loosen the screw on the access cover (on the support tube) and remove the cover.

2. Loosen the three housing rotation set screws at the base of the electronics housing with a hex wrench by turning the screws clockwise (inward) until they will clear the support tube.

3. Slow ly pull th e el ectroni cs housin g ou t of the supp o rt tube.

4. Unscrew the sensor ca ble from the housing with a 5/16-inch open end wren ch.

NOTE

Do not pull the housing more than 1.5 inches (40 mm) from the top of the support tube until the sensor cable is disconnected. Damage to the sensor may occur if thi s sensor cable is stressed.

5. Rotate the housing to the desired orientation.

6. Hold it in this orientation while you screw the sensor cable onto the base of the housing .

NOTE

Do not rotate the housing while the sensor cabl e is atta ched to the base of the housing . This will stress the cable and may dam a ge the sensor.

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7. Place the electronics housing into the top of the support tube.

8. Use a hex wrench to turn the three housing rotation screws outward to engage the support tube.

9. Replace the access co ver on the support tube.

10. Tigh te n the scre w o n th e ac cess cov er.