GE Sensing GS868 Start-up Guide

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Measurement & Control Flow

DigitalFlow™ GS868

Panametrics Steam Ultrasonic Mass Flowmeter

Startup Guide

910-190U Rev. E1

February 2016

DigitalFlow™ GS868

Panametrics Steam Ultrasonic Mass Flowmeter

Startup Guide

910-190U Rev. E1 February 2016

www.gemeasurement.com

Technical content subject to change without notice.

[no content intended for this page]

Preface

Information Paragraphs

Note: These paragraphs provide information that provides a deeper understanding of the situation, but is not

essential to the proper completion of the instructions.

IMPORTANT: These paragraphs provide information emphasizing instructions which are essential to proper setup of

the equipment. Failure to follow these instructions carefully may cause unreliable performance.

WARNING! Indicates a potentially hazardous situation which can result in serious personal injury or death, if it is not avoided.

CAUTION! Indicates a potentially hazardous situation which can result in minor or moderate injury to personnel or damage to the equipment, if it is not avoided.

HIGH VOLTAGE! This symbol indicates the presence of high voltage. It calls your attention to situations or operations that could be dangerous to you and other persons operating the equipment. Read these messages and follow the instructions carefully.

Safety Issues

WARNING! It is the responsibility of the user to make sure all local, county, state and national

codes, regulations, rules and laws related to safety and safe operating conditions are met for each installation.

Auxiliary Equipment

Local Safety Standards

The user must make sure that he operates all auxiliary equipment in accordance with local codes, standards, regulations, or laws applicable to safety.

Working Area

WARNING! Auxiliary equipment may have both manual and automatic modes of operation. As equipment can move suddenly and without warning, do not enter the work cell of this equipment during automatic operation, and do not enter the work envelope of this equipment during manual operation. If you do, serious injury can result.

WARNING! Make sure that power to the auxiliary equipment is turned OFF and locked out before you perform maintenance procedures on the equipment.

DigitalFlow™ GS868 Startup Guide iii

Preface

Qualification of Personnel

Make sure that all personnel have manufacturer-approved training applicable to the auxiliary equipment.

Personal Safety Equipment

Make sure that operators and maintenance personnel have all safety equipment applicable to the auxiliary equipment. Examples include safety glasses, protective headgear, safety shoes, etc.

Unauthorized Operation

Make sure that unauthorized personnel cannot gain access to the operation of the equipment.

Environmental Compliance

Waste Electrical and Electronic Equipment (WEEE) Directive

GE Measurement & Control is an active participant in Europe’s Waste Electrical and Electronic Equipment (WEEE) take-back initiative, directive 2012/19/EU.

The equipment that you bought has required the extraction and use of natural resources for its production. It may contain hazardous substances that could impact health and the environment.

In order to avoid the dissemination of those substances in our environment and to diminish the pressure on the natural resources, we encourage you to use the appropriate take-back systems. Those systems will reuse or recycle most of the materials of your end life equipment in a sound way.

The crossed-out wheeled bin symbol invites you to use those systems.

If you need more information on the collection, reuse and recycling systems, please contact your local or regional waste administration.

http://www.ge-mcs.com/en/about-us/environmental-health-and-safety/weee.html for take-back instructions and

Visit more information about this initiative.

iv DigitalFlow™ GS868 Startup Guide

Contents

Chapter 1. Installation

1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.1.1 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Site Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.1 Electronics Console Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.2.2 Flowcell Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.2.3 Transducer Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.2.4 Cable Lengths. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.2.5 Temperature and Pressure Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.6 Transducer Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.3 Installing a Flowcell. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.4 Installing Temperature and Pressure Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

1.5 Mounting the GS868 Electronic Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1.6 Making the Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.6.1 Wiring the Line Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6.2 Wiring the Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

1.6.3 Wiring the 0/4-20 mA Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

1.6.4 Wiring the Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

1.6.4a Wiring the RS232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

1.6.4b Wiring the RS485 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

1.6.4c Wiring the Ethernet Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

1.6.4d Wiring the MODBUS/TCP Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

1.6.5 Wiring the Foundation Fieldbus Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

1.6.6 Wiring an Alarms Option Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

1.6.7 Wiring a 0/4-20 mA Analog Inputs Option Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

1.6.8 Wiring a Totalizer/Frequency Outputs Option Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

1.6.9 Wiring an RTD Inputs Option Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

1.6.10 Wiring a 0/4-20 mA Analog Outputs Option Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

DigitalFlow™ GS868 Startup Guide v

Contents

Chapter 2. Initial Setup

2.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

2.2 Navigating Through the User Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

2.3 Accessing the User Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

2.4 Activating a Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

2.4.1 1-Channel Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

2.4.2 2-Channel Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

2.4.3 1 and 2-Channel Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

2.5 Entering System Data for a Channel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

2.5.1 A 1-Channel Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

2.5.2 A 2-Channel Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

2.5.3 1 and 2-Channel Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

2.6 Entering Pipe Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

2.6.1 Transducer Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

2.6.2 Pipe OD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

2.6.3 Pipe Wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

2.6.4 Path Length. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

2.6.5 Axial Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

2.6.6 Fluid Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

2.6.7 Reynolds Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

2.6.8 Calibration Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Chapter 3. Operation

3.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

3.2 Powering Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

3.3 Using the Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

3.4 Taking Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

3.4.1 Foundation Fieldbus Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

vi DigitalFlow™ GS868 Startup Guide

Contents

Chapter 4. Specifications

4.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4.1.1 Hardware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4.1.2 Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4.1.3 Flow Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4.1.4 Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4.1.5 Rangeability (Overall) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4.1.6 Repeatability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4.1.7 Response Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4.2 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

4.2.1 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

4.2.2 Power Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

4.2.3 Operating Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

4.2.4 European Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

4.2.5 Input/Output Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

4.3 Operational . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

4.3.1 Flow Computer (Built-in) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

4.3.2 Data Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

4.3.3 Display Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

4.3.4 Printer Signal Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

4.4 Transducer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

4.4.1 Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

4.4.2 Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

4.4.3 Pressure Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

4.4.4 Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

4.4.5 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

4.5 Flowcell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Appendix A. CE Mark Compliance

A.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

A.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

A.3 External Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Appendix B. Data Records

B.1 Option Cards Installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

B.2 Initial Setup Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Appendix C. Optional Enclosures

C.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

C.2 Rack Mount Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

C.3 Rack Mount Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

C.4 Rack Mount Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

DigitalFlow™ GS868 Startup Guide vii

Contents

Appendix D. Measuring P and L Dimensions

D.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

D.2 Measuring P and L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

• Special Conditions for Safe Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4 Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4 EU / EEA Installation Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4 Increased Safety Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4 Power Connection: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4 All Other Screw Terminal Connections:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

viii DigitalFlow™ GS868 Startup Guide

Chapter 1. Installation

1.1 Introduction

To ensure safe and reliable operation of the Model GS868 Steam Ultrasonic Mass Flowmeter, the system must be installed in accordance with the guidelines established by GE’s engineers. Those guidelines, which are explained in detail in this chapter, include the following specific topics:

• Unpacking the Model GS868 system

• Selecting a suitable site for the electronics console and the flowcell/transducers

• Installing a flowcell

• Installing temperature and pressure transmitters

• Installing the Electronics Console

• Wiring the Electronics Console.

WARNING!

which are potentially hazardous. In such cases, the importance of proper safety practices cannot be overemphasized. Be sure to follow all applicable local safety codes and regulations for installing electrical equipment and working with hazardous gases or flow conditions. Consult company safety personnel or local safety authorities to verify the safety of any procedure or practice.

ATTENTION EUROPEAN CUSTOMERS!

connections must be made in accordance with the instructions in Appendix A, CE Mark Compliance.

The Model GS868 flowmeter can measure the flow rate of many gases, some of

In order to meet CE Mark requirements, all wiring

1.1.1 Unpacking

Carefully remove the electronics console, the transducers, and the cables from the shipping containers. Before discarding any of the packing materials, account for all components and documentation listed on the packing slip. The discarding of an important item along with the packing materials is all too common. If anything is missing or damaged, contact the factory immediately for assistance.

DigitalFlow™ GS868 Startup Guide 1

Chapter 1. Installation

1.2 Site Considerations

Because the relative physical locations of the flowcell and the Model GS868 electronics console are important, use the guidelines given in this section to plan the Model GS868 system installation.

1.2.1 Electronics Console Location

The standard Model GS868 electronics enclosure is a Type-4X weather-resistant, dust-tight, indoor/outdoor type. Typically, the electronics console is mounted in a meter shed. When choosing a mounting site, make sure that the location permits easy access to the console for programming, testing, and servicing.

Note: For compliance with the European Union’s Low Voltage Directive, this unit requires an external power

disconnect device such as a switch or circuit breaker. The disconnect device must be marked as such, clearly visible, directly accessible, and located within 1.8 m (6 ft) of the Model GS868.

1.2.2 Flowcell Location

The pipeline flowcell consists of the flowmeter transducers and any pressure and/or temperature transducers employed as part of the flowmeter system. Ideally, choose a section of pipe with unlimited access as the flowcell; for example, a long stretch of pipe that is above ground. However, if the flowcell is mounted on an underground pipe, dig a pit around the pipe to facilitate installation of the transducer mechanisms.

1.2.3 Transducer Location

For a given fluid and pipe, the Model GS868’s accuracy depends primarily on the location and alignment of the transducers. In addition to accessibility, when planning for transducer location, adhere to the following guidelines:

1. Locate the transducers so that there are at least 20 pipe diameters of straight, undisturbed flow upstream and 10 pipe diameters of straight, undisturbed flow downstream from the measurement point. To ensure undisturbed flow, avoid: sources of turbulence in the fluid such as valves, flanges, expansions and elbows; swirl; and dips or low spots in which condensed liquid may collect.

2. Because condensate or sediment at the bottom of the pipe may cause attenuation of the ultrasonic signal, locate the transducers on the side of a horizontal pipe, where possible. If limited pipe access necessitates top-mounted transducers and the sound beam path includes a reflection, shift the transducers to at least 10° off top center. This will minimize the influence of any sediment on the reflected ultrasonic signals.

1.2.4 Cable Lengths

Locate the flowcell/transducers as close as possible to the electronics console. The factory supplies transducer cables up to 500 ft (153 m) in length. If longer cables are required, consult the factory for assistance.

1.2.5 Temperature and Pressure Transmitters

When installing temperature and/or pressure transmitters in the flowcell, locate them downstream of the flowmeter transducers. These transmitters should be positioned no closer to the flowmeter transducers than 2 pipe diameters and no further away from the flowmeter transducers than 20 pipe diameters.

2 DigitalFlow™ GS868 Startup Guide

Chapter 1. Installation

1.2.6 Transducer Cables

When installing the transducer cables, always observe established standard practices for the installation of electrical cables. Specifically, do not route transducer cables alongside high amperage AC power lines or any other cables that could cause electrical interference. Also, protect the transducer cables and connections from the weather and corrosive atmospheres.

Note: When using non-GE cables to connect the flowmeter transducers to the Model GS868 electronics console, the

cables must have electrical characteristics identical to the GE cables. Type RG 62 a/u coaxial cable should be used, and each cable must be the same length (within ±4 in.).

1.3 Installing a Flowcell

A flowcell is the section of pipe where the transducers are mounted. It can be created either by mounting the transducers on the existing pipeline or by mounting them on a spoolpiece. A spoolpiece is a separately manufactured pipe section, matched to the existing pipe, which contains ports for mounting the transducers. This approach allows the transducers to be aligned and calibrated before inserting the spoolpiece into the pipeline.

Figure 1 on page 4 shows a block diagram of a typical Model GS868 system, including optional pressure and temperature transmitters. For detailed instructions on installing the transducers and/or spoolpiece, refer to the supplied drawings and the GE Gas Transducer Installation Guide for Ultrasonic Flowmeters.

DigitalFlow™ GS868 Startup Guide 3

Chapter 1. Installation

Transducer

Flowcell

Temperature Transmitter

Pressure Transmitter

Preamp

Transducer

Electronics Console

STEAM

FLOW

Figure 1: A Typical Model GS868 System

4 DigitalFlow™ GS868 Startup Guide

Chapter 1. Installation

Temperature Transmitter

Pressure Transmitter

Isolation Valve

Flowcell Wall

Coupling

Thermowell

RTD

1.4 Installing Temperature and Pressure Transmitters

Optional temperature and pressure transmitters may be installed as part of the flowcell, near the ultrasonic transducer ports. Be sure to observe the siting requirements given earlier in this chapter. These transmitters must use a 0/4-20 mA signal to transmit the temperature and pressure values to the Model GS868 electronics console. In turn, the electronics console will provide a 24 VDC signal to power the transmitters. Any desired transmitters or sensors may be used, but they must have an accuracy equal to 0.5% of the reading or better.

Note: Resistive Thermal Devices (RTDs) are a good choice for measuring the temperature.

Typically, a 1/2” or 3/4” NPT female threaded port is used to mount the transmitters on the flowcell. If the pipeline is insulated, the coupling may need to be extended to provide convenient access. Of course, other types of mounting ports, including flanged ports, may be used for the transmitters.

IMPORTANT: Under changing temperature and pressure conditions, the Model GS868 can calculate accurate steam

density and mass flow only if temperature and pressure transmitters have been installed.

Figure 2 below shows a typical mounting arrangement for the pressure and temperature transmitters. The temperature sensor should protrude 1/4 to 1/2 way into the pipe.

Figure 2: Typical Temperature/Pressure Transmitter Mounting

DigitalFlow™ GS868 Startup Guide 5

Chapter 1. Installation

1.5 Mounting the GS868 Electronic Console

The standard model GS868 electronics package is housed in a Type-4X weather-resistant enclosure. Refer to Figure 9 on page 19 for the mounting dimensions of this enclosure.

IMPORTANT: For meters supplied in one of the optional enclosure styles, refer to Appendix C, Optional Enclosures, for

specific mounting dimensions and instructions.

WARNING!

electric shock. See Figure 10 on page 20 to locate the internal ground connection.

Proper grounding of the GS868 chassis is required to prevent the possibility of

1.6 Making the Electrical Connections

ATTENTION EUROPEAN CUSTOMERS!

connections must be made in accordance with the instructions in Appendix A, CE Mark Compliance.

This section contains instructions for making all the necessary electrical connections to the Model GS868 flowmeter. Refer to Figure 10 on page 20 for a complete wiring diagram of the unit.

IMPORTANT: For meters supplied in one of the optional enclosure styles, refer to Appendix C, Optional Enclosures, for

the appropriate wiring diagram and specific wiring instructions.

Except for the power connector, all electrical connectors are stored in their terminal blocks during shipment and may be removed from the enclosure for more convenient wiring. Feed the cables through the conduit holes on the bottom of the enclosure, attach the wires to the appropriate connectors and plug the connectors back into their terminal blocks.

Note: For compliance with the European Union’s Low Voltage Directive, a transparent plastic shroud protects the

electrical connections. The shroud must remain in place, except while wiring the unit. Reinstall the shroud after the wiring has been completed.

In order to meet CE Mark requirements, all wiring

Once the Model GS868 is completely wired, proceed to Chapter 2, Initial Setup, to configure the unit for operation.

6 DigitalFlow™ GS868 Startup Guide

1.6.1 Wiring the Line Power

Chapter 1. Installation

ATTENTION EUROPEAN CUSTOMERS!

In order to meet CE Mark requirements, all wiring

connections must be made in accordance with the instructions in Appendix A, CE Mark

Compliance.

The Model GS868 may be ordered for operation with power inputs of 100-120 VAC, 220-240 VAC, or 12-28 VDC. The label on the shroud inside the electronics enclosure, just above the

TB1 line power terminal block, lists the required

line voltage and the fuse rating for the unit (the fuse rating is also listed in Chapter 4, Specifications). Be sure to connect the meter only to the specified line voltage.

Note: For compliance with the European Union’s Low Voltage Directive, this unit requires an external power

disconnect device such as a switch or circuit breaker. The disconnect device must be marked as such, clearly visible, directly accessible, and located within 1.8 m (6 ft) of the Model GS868.

Note: Only use Class 2 Rated Power supply for line power connection to DC instrument.

Refer to Figure 3 on page 8 or Figure 10 on page 20 to locate terminal block

WARNING!

Improper connection of the line power leads or connecting the meter to the

TB1 and connect the line power as follows:

incorrect line voltage will damage the unit. It will also result in hazardous voltages at the flowcell and associated piping and within the electronics console.

DigitalFlow™ GS868 Startup Guide 7

Chapter 1. Installation

TB1

N/L2

Gro

und

L1G

Internal Ground

Connection

PC Board

Ground Wire

Cover

Ground Wire

G – +ACDC

AC Line Power or DC +

AC Neutral/Line or DC –

1.6.1 Wiring the Line Power (cont.)

1. Remove the plastic shroud that covers the terminal blocks. Be sure to reinstall the shroud after all of the wiring has been completed.

2. Strip ¼” of insulation from the end of the power and neutral or line leads (or the positive and negative DC power leads), and ½” from the end of the ground lead.

3. Connect the ground lead to the internal ground connection located on the side panel of the inclosure (see Figure 3 below).

IMPORTANT: The incoming ground lead must be connected to the internal ground connection.

4. Connect the neutral or line lead (or the negative – DC power lead) to

TB1-2 and the line power lead (or the positive

+ DC power lead) to TB1-3 as shown in Figure 3 below.

IMPORTANT: Do not remove the existing PC board ground wire or the cover ground wire.

Figure 3: Wiring the Line Power

8 DigitalFlow™ GS868 Startup Guide

1.6.2 Wiring the Transducers

Chapter 1. Installation

ATTENTION EUROPEAN CUSTOMERS!

connections must be made in accordance with the instructions in Appendix A, CE Mark Compliance.

Wiring a typical Model GS868 ultrasonic natural gas flowmeter system requires interconnection of the following components:

In order to meet CE Mark requirements, all wiring

• a pair of transducers (per channel) mounted in the flowcell

• a preamplifier for each channel

• a lightning protector (optional)

• the electronics console

To wire the transducers, complete the following steps:

WARNING!

static buildup by shorting the center conductor of the transducer cables to the metal shield on the cable connector.

1. Using the pair of coaxial cables with BNC to BNC connectors supplied by the factory (or equivalent cables),

connect both transducers to the preamplifier.

Before connecting the transducers, take them to a safe area and discharge any

CAUTION!

2. If an optional lightning protector is being installed, connect it to the preamplifier.

3. Using the pair of coaxial cables with BNC to flying lead connectors supplied by the factory (or equivalent cables),

connect the preamplifier to terminal block location of the terminal block and the terminal block pin assignments.

4. For a 2-channel Model GS868 flowmeter, repeat steps 1-3 to wire the Channel 2 transducer system to terminal

CH2.

block

Note: It is not required that Channel 2 of a 2-channel Model GS868 be used. This channel may be left inactive for

future use.

After the wiring has been completed, the transducer channel(s) must be activated before measurements can begin. See Chapter 2, Initial Setup, for instructions.

As part of maintaining the FM/CSA environmental rating (TYPE 4) on the remote preamplifier, thread sealant is required on all conduit entries.

CH1 in the electronics console. Refer to Figure 10 on page 20 for the

DigitalFlow™ GS868 Startup Guide 9

Chapter 1. Installation

1.6.3 Wiring the 0/4-20 mA Analog Outputs

The standard configuration of the Model GS868 flowmeter includes two isolated 0/4-20 mA analog outputs (designated as A and B). Connections to these outputs may be made with standard twisted-pair wiring. The current loop impedance for these circuits must not exceed 550 ohms.

Refer to Figure 10 on page 20 for the location of terminal block

I/O and wire the terminal block as shown.

1.6.4 Wiring the Serial Port

The Model GS868 is equipped with a built-in serial communications port. The standard port is an RS232 interface, but an optional RS485 interface is available upon request. Proceed to the appropriate sub-section for wiring instructions. For more information on serial communications, refer to the EIA-RS Serial Communications Manual (916-054).

1.6.4a Wiring the RS232 Interface

The RS232 communications port provides a serial interface for connecting the Model GS868 flowmeter to a printer, an ANSI terminal or a personal computer.

The RS232 serial interface is wired as Data Terminal Equipment (DTE), and the signals available at the Model GS868

RS232 terminal block are shown in Table 1 below. Refer to Figure 8 on page 16 to locate terminal block RS232 and

complete the following steps to wire the terminal:

1. Use the information in Table 1 below to construct a suitable cable for connecting the Model GS868 to the external device. If desired, an appropriate cable may be purchased from GE.

Table 1: RS232 Connection to DCE or DTE Device

RS232

Pin # Signal Description

DCE DB25 Pin #

DTE DB25 Pin #

DTE DB9

Pin #

1 RTN (Return) 7 7 5

2 TX (Transmit) 3 2 3

3 RX (Receive) 2 3 2

DTR (Data Terminal Ready)

20 20 4

5 CTS (Clear to Send) 4 5 8

2. Wire the flying leads end of the cable to terminal block

RS232 and connect the other end of the cable to the printer,

ANSI terminal or personal computer.

After the wiring has been completed, consult the User’s Manual for the external device to configure it for use with the Model GS868.

10 DigitalFlow™ GS868 Startup Guide

Chapter 1. Installation

NC 6 NC 7 RX 8

TX 9

1 TD OUT 2 3 4 RD IN

GS868 Converter

1.6.4b Wiring the RS485 Interface

Use the optional RS485 serial port to network multiple GS868 flowmeters to a single computer terminal. Upon request, the standard RS232 port on the GS868 may be configured as a two-wire, half-duplex RS485 interface, through a device such as the INMAC Model 800052 RS232-RS422/RS485 converter.

To wire the RS485 serial port, refer to Figure 10 on page 20 and complete the following steps:

1. Disconnect the main power to the unit and remove the cover.

2. Install the required cable clamp in the chosen conduit hole on the side of the electronics enclosure.

3. Feed one end of the cable through the conduit hole, wire it to terminal block J1 and secure the cable clamp.

Connect the other end of the cable to the converter, as shown in Figure 4 below.

Figure 4: Typical RS485 Connections

ATTENTION EUROPEAN CUSTOMERS!

connections must be made in accordance with the instructions in Appendix A, CE Mark Compliance.

4. If wiring of the unit has been completed, reinstall the rear cover on the enclosure and tighten the set screw.

In order to meet CE Mark requirements, all wiring

DigitalFlow™ GS868 Startup Guide 11

Chapter 1. Installation

1.6.4c Wiring the Ethernet Interface

A modified GS868 can use the Ethernet interface to communicate to an internal network. An optional Ethernet card with a unique MAC (IP) address (installed only in slots 5 or 6) includes an RJ45 connector. To connect the Ethernetenabled GS868 to the network, insert the jack of an RJ45 cable into the RJ45 connector, route the cable through the bottom of the GS868, and wire the other end of the cable to the Ethernet network according to the manufacturer’s instructions. An external connection is required between the Ethernet option card and the GS868’s RS232 connector, as shown in Table 2 below.

Note: The MAC address for a specific GS868 is included with customer documentation. For more information on

setting up the MAC address, refer to Chapter 6 of the Programming Manual.

Table 2: RS232 to Ethernet Interconnections

GS868 Type Terminal Block Terminal Block

RS232 on Main Board TB1 on Ethernet Card

Wall Mount

TX Pin 1

RX Pin 2

RTN Pin 3

RS232 on Main Board TB2 on Ethernet Card

Rack Mount

TX Pin 1

RX Pin 2

RTN Pin 3

1.6.4d Wiring the MODBUS/TCP Interface

Customers can also use a modified GS868 that provides a MODBUS/TCP interface to communicate to an internal network. An optional MODBUS/TCP card with a unique MAC (IP) address (installed only in slots 5 or 6) includes an RJ45 connector. To connect the MODBUS/TCP-enabled GS868 to the network, insert the jack of an RJ45 cable into the RJ45 connector, route the cable through the bottom of the GS868, and wire the other end of the cable to the Ethernet network according to the manufacturer’s instructions.

Note: The MAC address for a specific GS868 is included with customer documentation. For more information on

setting up the MAC address, refer to Chapter 6 of the Programming Manual.

12 DigitalFlow™ GS868 Startup Guide

Chapter 1. Installation

1.6.5 Wiring the Foundation Fieldbus Network

Fieldbus network connections are made at J8/J9, pins 1 and 2 (see Figure 5 below). Optionally, a shield can be connected to J8/J9 pin 3, depending on the network wiring. Connector J8 or J9 will be installed depending on the option ordered by the customer.

No connections are made to J8/J9, pins 7 and 9, under normal operation. If it is desired to reset the network board to factory defaults:

1. Connect a jumper between J8/J9 pin 7 and pin 9.

2. Power cycle the instrument.

3. Ten seconds after the power has been restored to the unit, remove the jumper to return the network board to normal

operation.

Figure 5: Network Connections - Standard Option Interior

DigitalFlow™ GS868 Startup Guide 13

Chapter 1. Installation

NC NC

Monitoring

Alarm

Device

Monitoring

Alarm

Device

Monitoring

Alarm

Device

Monitoring

Alarm

Device

not triggered

Conventional,

not triggered

Fail-Safe,

triggered

Conventional,

triggered or power failure

Fail-Safe,

1.6.6 Wiring an Alarms Option Card

The Model GS868 flowmeter can accommodate up to 4 alarms option cards. Each alarms option card includes three Form C relays (designated as A, B and C).

The alarm relays on the option card are available in two types:

• general purpose

• hermetically sealed for Class I, Division 2 hazardous areas.

The maximum electrical ratings for the relays are listed in Chapter 4, Specifications. Each of the three alarm relays can be wired either as Normally Open (NO) or Normally Closed (NC).

In setting up an alarm relay, it may be wired for either conventional or fail-safe operation. In fail-safe mode, the alarm relay is constantly energized, except when it is triggered or a power failure or other interruption occurs. See Figure 6 below for the operation of a NO alarm relay in both conventional and fail-safe mode.

Connect the two wires required for each alarm relay in accordance with the pin number assignments shown in Figure 10 on page 20.

14 DigitalFlow™ GS868 Startup Guide

Figure 6: Conventional and Fail-Safe Operation

Chapter 1. Installation

+24V 1

INHI 2

INLO 3

+–

+ IN

– OUT

+ IN

– OUT

Sensor

Transmitter

Analog Input

24 VDC

POWER SUPPLY

With External Power Supply

With Internal Power Supply

RTN 4

Jumper

+24V 1

INHI 2

INLO 3

RTN 4

1.6.7 Wiring a 0/4-20 mA Analog Inputs Option Card

To calculate the standard mass flow rates of the steam, the Model GS868 requires accurate temperature and pressure data from the measurement site. Transmitters installed in the flowcell can provide this information via an optional 0/4-

20 mA analog inputs card. This option card includes two isolated 0/4-20 mA analog inputs (designated as A and B), each of which includes a 24 VDC power supply for loop-powered transmitters. Either input may be used to process the temperature signal, while the other input is used to process the pressure signal.

Note: To enter programming data during operation of the meter, it will be necessary to know which input is assigned

to which process parameter. This information should have been entered in Appendix B, Data Records.

The analog inputs, which have an impedance of 118 ohms, should be connected with standard twisted-pair wiring. Power to the transmitters may be supplied either by the integral 24 VDC power supply on the analog input card or by an external power supply. Figure 7 below shows typical wiring diagrams, with and without an external power supply, for one of the analog inputs.

DigitalFlow™ GS868 Startup Guide 15

Figure 7: Analog Input Wiring Diagram

Chapter 1. Installation

Common

Volts –

(Common)

Volts +

(Int. Pwr. Sup.)

+5V

200

Model GS868

Pulse Counter

Frequency Counter

Totalizer Output

Frequency Output

Load

Max. Current: 4A Max. Voltage: 150V

Isolation Voltage: 500V

Max. Load Power: 10W In

C = Isolated Return

1.6.7 Wiring a 0/4-20 mA Analog Inputs Option Card (cont.)

Wire the analog input terminal block in accordance with the pin number assignments shown in Figure 10 on page 20. The standard Model GS868 has at least one analog inputs option card, which is used to supply the live pressure reading required for accurate mass flow calculations. These option cards are identical to the temperature/pressure card described above and they should be wired in the same manner (see Figure 6 on page 14).

Note: The analog inputs option card can be calibrated with the Model GS868’s built-in analog outputs. However, be

certain that the analog outputs have been calibrated first. See Chapter 1, Calibration, in the Service Manual for the appropriate procedures.

1.6.8 Wiring a Totalizer/Frequency Outputs Option Card

The Model GS868 can accommodate up to four totalizer/frequency outputs option cards. Each totalizer/frequency outputs option card provides four outputs (designated as A, B, C, and D) that can be used as either totalizer or frequency outputs.

Each totalizer/frequency output requires two wires. Wire this terminal block in accordance with the pin number

[no content intended for this page]

assignments shown in Figure 10 on page 20. Figure 8 below shows sample wiring diagrams of a totalizer output circuit and a frequency output circuit.

16 DigitalFlow™ GS868 Startup Guide

Figure 8: Totalizer/Frequency Outputs Wiring

Chapter 1. Installation

1.6.9 Wiring an RTD Inputs Option Card

The Model GS868 can accommodate up to four RTD (Resistance Temperature Device) inputs option cards. Each RTD inputs option card provides two direct RTD inputs (designated as A and B).

The standard Model GS868 has at least one RTD inputs option card, which is used to supply the live temperature reading required for accurate mass flow calculations. Each RTD input requires three wires, which should be fed through one of the conduit holes on the bottom of the electronic console. Wire this terminal block in accordance with the pin number assignments shown in Figure 10 on page 20.

1.6.10 Wiring a 0/4-20 mA Analog Outputs Option Card

The Model GS868 flowmeter can accommodate up to 4 analog outputs option cards. Each analog outputs option card includes four isolated 0/4-20 mA outputs (designated as A, B, C and D).

Connections to these outputs may be made with standard twisted-pair wiring. The total current loop impedance for these circuits must not exceed 1000 ohms. Wire this terminal block in accordance with the pin number assignments shown in Figure 10 on page 20.

DigitalFlow™ GS868 Startup Guide 17

Chapter 1. Installation

[no content intended for this page]

18 DigitalFlow™ GS868 Startup Guide

Chapter 1. Installation

14.24

5.10 (129)

13.00 13.49

8.00 (203)

1.40 (36)

10.74 (273)

1.54 (39)

1.65 (42)

2.26 (57)

1.50 (38)

1.77 (45)

1.30 (33)

2.26 (57)

1.20 (30)

1/2" Conduit Plate

11.37 (289)

3/4" Conduit Plate

2.87

7.00

2.69 (68)

0.75 (19)

Ø0.38 (10), 4 Places

Ø0.13 (3), 4 Places

Ø0.88 (22), 10 Places

Ø1.10 (28), 6 Places

(362) (330) (343)

(73)

(178)

Figure 9: Model GS868 Type 4X Enclosure (ref. dwg #425-208)

DigitalFlow™ GS868 Startup Guide 19

Chapter 1. Installation

WARNING

ALARMS ANALOG OUT ANALOG IN TOTL/FREQ RTD IN

CHAN 2

S IGNT

RS 232

TTTRT SNR

CD R

UPDN

ANALOG OUT

CHAN 1

SIR

TRT

X D C R S

-++-

TWIND

RWIND

RCV

GATE

DRTN

For compliance with the European Union's Low Voltage Directive, this unit requires an external power disconnect device such as a switch or circuit breaker. The disconnect device must be marked as such, clearly visible, directly accessible and located within 1.8 m (6 ft) of the Model GS868.

For compliance with the European Union's Low Voltage

Directive, a transparent plastic shroud protects the electrical connections. The shroud must remain in place, except while wiring the unit. Reinstall the shroud after the wiring has been completed.

NOTE:

CH2 TRANSDUCER

Upstream SIG(+)

Downstream SIG(+)

2 Upstream RTN(-)

Downstream RTN(-)

Pin # Description

CH1 TRANSDUCER

Downstream SIG(+)

Downstream RTN(-)

Upstream RTN(-)

Upstream SIG(+)

Description

Pin #

0/4-20 mA ANALOG OUTPUTS

Output B - RTN(-)

Output B - SIG(+)

Output A - RTN(-)

Output A - SIG(+)

Description

Pin #

ALARM RELAYS

Description

Relay A - Normally Open (NO)

Relay A - Common (C)

Relay A - Normally Closed (NC)

Relay B - Normally Open (NO)4

Pin #

Relay C - Common (C)

Relay C - Normally Open (NO)

Relay B - Normally Closed (NC)

Relay B - Common (C)

Relay C - Normally Closed (NC)

Pin #

Output C - RTN(-)

Output C - SIG(+)

Output D - RTN(-)

Output D - SIG(+)

Output A - RTN(-)

Output A - SIG(+)

Output B - RTN(-)

Output B - SIG(+)

0/4-20 mA ANALOG OUTPUTS

Description

0/4-20 mA ANALOG INPUTS

Input A - RTN

Input A - INLO

Input A - +24V

Input B - INLO

Input B - INHI

Input B - +24V

Input B - RTN

Description

Input A - INHI

Pin #

TOTALIZER/FREQUENCY OUTPUTS

Output B - Normally Open (NO)

Output B - Common (C)

Output A - Common (C)

Output D - Common (C)

Output C - Normally Open (NO)

Output C - Common (C)

Output D - Normally Open (NO)

Description

Output

A - Normally Open (NO)

Pin #

Input A - Common (C)

Description

Unused

Input B - SIG(+)

Input B - Common (C)

Input A - SIG(+)

Input A - Common (C)

Unused

RTD INPUTS

Pin #

RS232 SERIAL PORT

Pin #

RTN - Digital Return

RX - Receive

TX - Transmit

Description

CTS - Clear to Send

DTR - Data Terminal Ready

Plastic LVD Shroud

Test Points

NOTE

One option card of each available type is shown in this diagram. These cards are not always installed in the same slots used for this example.

RS485 PORT (MODBUS)

Pin #

TMT-

Unused

TMT+

Description

Unused

RS485

Internal Ground

Connection

PC Board

Ground Wire

Cover

Ground Wire

Pin #

Description

G - Earth Ground

N - Line Neutral

L1 - Line Power

TB1 POWER INPUT

100 or 120 VAC

Pin #

Description

G - Earth Ground

L2 - Line Power

L1 - Line Power

TB1 POWER INPUT

220 or 240 VAC

Pin #

Description

G - Earth Ground

– Negative

+ Positive

TB1 POWER INPUT

12 - 28 VDC

G N/L2 L1

G – +

Figure 10: Model GS868 Electronics Console Wiring (ref. dwg #702-213, sht 1 of 2)

DigitalFlow™ GS868 Startup Guide 20

Chapter 1. Installation

BLK

PIPE (REF ONLY)

TRANSDUCER (REF ONLY)

FLOW

FLYING LEAD TO BNC COAX CABLES

(UP TO 1000 FEET)

RED

PIN #

24V+

+IN1

-IN1

24V-

PRESSURE INPUT (SOFTWARE ASSIGNED)

GS868

TEMPERATURE INPUT (SOFTWARE ASSIGNED)

GS868

PIN #

24V-

-IN2

+IN2

24V+

TEMPERATURE TRANSMITTER

-OUT

(REFERENCE ONLY)

+IN

-OUT

+IN

(REFERENCE ONLY)

PRESSURE TRANSMITTER

SENSOR

PIN #

24V+

+IN1

-IN1

24V-

PRESSURE INPUT

GS868

PIN #

24V-

-IN2

+IN2

24V+

TEMPERATURE TRANSMITTER

-OUT

(REFERENCE ONLY)

+IN

-OUT

+IN

(REFERENCE ONLY)

PRESSURE TRANSMITTER

SENSOR

24VDC

POWER SUPPLY

(REFERENCE ONLY)

USING EXTERNAL 24VDC SUPPLY

WIRING DETAIL, PRESSURE AND TEMPERATURE INPUTS

USING INTERNAL 24VDC SUPPLY

WIRING DETAIL, PRESSURE AND TEMPERATURE INPUTS

TEMPERATURE INPUT

GS868

JUMPER WIRE

(NOT SUPPLIED)

JUMPER WIRE

(NOT SUPPLIED)

PREAMPLIFIER

CONSOL

D N

X D

C R

PANAMET

I C S

P RE

8 6 8

S/ N

U P

(SUPPLIED BY GE) 10 FOOT

COAXIAL CABLES, BNC TO BNC

PIPE (REF ONLY)

FLYING LEAD TO BNC COAX CABLES

RED

BLK

RED

(UP TO 1000 FEET)

(SUPPLIED BY GE) 10 FOOT

COAXIAL CABLES, BNC TO BNC

TRANSDUCER (REF ONLY)

FLOW

TRANSDUCER (REF ONLY)

D N

CONSO

P AN

ETRICS

RE S / N

D N

CONSO

ETRICS

E 8 68

S / N

UPUP

DND

PANAM

S/NS/N

PRE8

DND

DCRX

DCR

CONSO

LECONSO

SUPPLIED BY GE

DUAL PREAMPLIFIER

SINGLE PREAMPLIFIER

PREAMPLIFIER

CAUTION!

As part of maintaining the FM/CSA environmental rating

(NEMA/TYPE 4) on the remote preamplifier, thread sealant

is required on all conduit entries.

Figure 11: Model GS868 Transducer Wiring (ref. dwg #702-213, sht 2 of 2)

DigitalFlow™ GS868 Startup Guide 21

Chapter 1. Installation

DigitalFlow™ GS868 Startup Guide 22

Chapter 2. Initial Setup

2.1 Introduction

This chapter provides instructions for entering the minimum amount of programming data required to place the Model GS868 flowmeter into operation. Before the Model GS868 can begin taking measurements and displaying valid data, the current system and pipe parameters must be entered. In addition, a 2-Channel meter requires that each channel be activated prior to use. Additional programming options provide access to the more advanced features of the Model GS868, but this information is not required to begin taking measurements.

Note: See the Programming Manual for information on those User Program options not covered in this chapter.

2.2 Navigating Through the User Program

In order to begin using the Model GS868, the following submenus within the User Program will be accessed:

• ACTIV - enables selection of the desired measurement method (for a 2-Channel meter, it is also used to activate a

channel)

• SYSTM - prompts the user to enter the required system data

• PIPE - prompts the user to enter the required pipe parameters

As a guide in following the programming instructions in this chapter, the relevant portions of the Model GS868 menu map have been reproduced in Figure 12 on page 33.

Note: There are minor differences at the start of the

models, but the

The following discussion assumes that the left screen pane is active. If the right screen pane is active, only the function key designations change. That is, replace Data Records.

Use the keypad, as described in the Programming Manual, to navigate through the User Program. The menu map may be followed in sequence, or the be used to delete the last alphanumeric character that was entered from the keypad.

PIPE submenus are identical.

[F1]-[F4] with [F5]-[F8]. Be sure to record all programming data in Appendix B,

] and ] keys may be used to scroll through the prompt screens. The ] key may

ACTIV and SYSTM submenus for the 1-Channel and 2-Channel

DigitalFlow™ GS868 Startup Guide 23

Chapter 2. Initial Setup

2.3 Accessing the User Program

To access the User Program, press the [PROG] key on the keypad.

Note: If the security feature is active, enter the password and press the

SECUR submenu section in Chapter 1, Programming Site Data, of the Programming Manual for more

[ENT] key to enter the User Program. See the

information.

For a 1-Channel Model GS868, the measurement mode screen is replaced by the following initial programming mode screen:

PROGRAM Start

At the User Program screen shown, press the [F1] function key and proceed to “Activating a Channel” section on page 25 for instructions.

PROGRAM

status

ACTIV SYSTM PIPE I/O

For a 2-Channel Model GS868, the following two-step sequence is required to reach the initial programming screen:

PROGRAM Start

Press [F1] or [F2] to select the submenu for Channel 1 or Channel 2, respectively, from the option bar.

PROGRAM

Channel 1

CH1 CH2 GLOBL SAVE

Chan 1 PROGR Start

At the user program screen shown, press the [F1] function key and proceed to “Activating a Channel” section on page 25 for instructions.

Channel PROGRAM

status

ACTIV SYSTM PIPE I/O

Only the submenus

ACTIV, SYSTM and PIPE are discussed in this manual. Refer to the Programming Manual for

information on the other submenus.

Note: In this manual, only the programming of Channel 1 will be described. To program Channel 2, simply repeat the

same procedures presented for Channel 1.

24 DigitalFlow™ GS868 Startup Guide

Chapter 2. Initial Setup

2.4 Activating a Channel

The ACTIV submenu permits selection of the desired measurement method. In addition, it is used to activate/deactivate one or both of the channels in a 2-Channel Model GS868.

2.4.1 1-Channel Meter

1. Enter the ACTIV submenu by pressing [F1] at the User PROGRAM prompt.

2. Press

[F1] to activate the channel in BURST mode.

2.4.2 2-Channel Meter

1. Enter the ACTIV submenu by pressing [F1] at the Channel PROGRAM prompt.

2. Press

[F1] (OFF) to deactivate the channel and return to the Channel PROGRAM prompt, or press [F2] to activate the

channel in

BURST mode.

2.4.3 1 and 2-Channel Meters

3. Press [F1] to select Skan mode or [F2] to select Skan/Measure mode. The meter will exit the ACTIV submenu and

return to the channel menu screen.

As indicated in the above prompt, the Model GS868 flowmeter can take measurements in two different ways

Skan is a low resolution technique for locating the acoustic signal and for high velocity measurements. It is more robust in a noisy environment than the Measure technique.

Measure is a more precise technique best used for low velocity measurements.

If Skan is selected at the next prompt, the instrument uses this technique exclusively. However, if S/M is selected, the meter uses Skan to find the acoustic signal and then tries to use the Measure technique for a more precise measurement.

Proceed directly to the next section to program the

SYSTM submenu.

DigitalFlow™ GS868 Startup Guide 25

Chapter 2. Initial Setup

2.5 Entering System Data for a Channel

Begin the programming of the SYSTM submenu in either the 1-Channel or 2-Channel section below.

2.5.1 A 1-Channel Meter

For the 1-Channel Model GS868, the information entered in the SYSTM submenu pertains to the global operation of the flowmeter.

1. At the User Program screen, press the

2. Enter a Site Label of up to 9 characters and press

[F2] function key to program the SYSTM submenu.

[ENT]. (While taking measurements, the site label will appear on

the locator bar.)

3. Enter a Site Message of up to 21 characters. Press

4. To select the System Units, press

[F1] to display parameters and measurements in English units, or press [F2] to

[ENT].

display parameters and measurements in Metric units.

5. Use the

[F1]-[F4] keys to select the type of Pressure Units desired.

The abbreviations and definitions of all the available pressure units are shown in Table 3 below. The choices shown on the option bar are determined by the selections made at the previous

SYSTEM UNITS prompt.

Table 3: Available Pressure Units

English Metric

PSIa = Pounds per square inch absolute BARa = bar absolute

PSIg = Pounds per square inch gage BARg = bar gage

kPaa = kiloPascals absolute

kPag - kiloPascals gage

a. If you have entered gage pressure, or the local atmospheric pressure (PSIg, BARg or kPag), use the numeric

keys to enter the gage pressure value. Press

[ENT].

6. At the Stopwatch Totalizer prompt, press [F1] to totalize all liquid flow continuously, or [F2] to measure totals

manually with the Stopwatch Timer. (With

MNUAL ([F2]), the console key on the keypad is used to start and stop the

totalizer. See the Programming Manual for details.)

The remainder of the

SYSTM submenu is identical for the 1-Channel and 2-Channel versions of the Model GS868.

Proceed to the 1- and 2-Channel Meters section to complete the programming of this submenu.

26 DigitalFlow™ GS868 Startup Guide

Chapter 2. Initial Setup

2.5.2 A 2-Channel Meter

For the 2-Channel Model GS868, the information entered in the SYSTM submenu pertains only to the currently selected channel.

1. At the User Program screen shown, press the

2. Enter a Channel Label of up to 9 characters. Press

3. Enter a Channel Message of up to 21 characters. Press

Note: For the 2-Channel Model GS868, the

not required to make the unit operational, are located in the

[F2] function key to program the SYSTM submenu.

[ENT].

System Units, Pressure Units and Stopwatch Totalizer prompts, which are

GLOBL submenu. See the Programming Manual for

details.

The remainder of the

SYSTM submenu is identical for the 1-Channel and 2-Channel versions of the Model GS868.

Proceed to the 1- and 2-Channel Meters section below to complete the programming of this submenu.

2.5.3 1 and 2-Channel Meters

1. At the Equation prompt, press [F1] to display the measurement data in standard volumetric units, or press [F2] to

display the measurement data in actual volumetric units. The GS868 uses the appropriate gas equation to calculate the flow rate in the volumetric units indicated.

2. Use the

The abbreviations and definitions of all the available volumetric and totalizer units are shown in Table 4 below. The choices shown on the option bar are determined by the selection made at the previous

[F1]-[F4] and ] keys to select the desired Volumetric Units for the flow rate display.

SYSTEM UNITS screen.

Table 4: Available Volumetric/Totalizer Units

English Metric

Actual Units

ACF = Actual Cubic Feet ACM = Actual Cubic Meters

KACF = Thousands of ACF KACM = Thousands of ACM

MMACF = Millions of ACF MMACM = Millions of ACM

Standard Units

SCF = Standard Cubic Feet SCM = Standard Cubic Meters

KSCF = Thousands of SCF KSCM = Thousands of SCM

MMSCF = Millions of SCF MMSCM = Millions of SCM

3. Use the

4. Use the

[F1]-[F4] keys to select the Volumetric Time (units for the volumetric flow rate display).

[F1]-[F4] keys to select the Vol Decimal Digits (the desired number of digits to the right of the decimal

point) in the volumetric flow rate display.

5. Use the

[F1]-[F4] and [ keys to select the Totalizer Units.

The abbreviations and definitions of all the available volumetric and totalizer units are shown in Table 4 on page 27. The choices shown on the option bar in the prompt screen above are determined by the selection made at the previous

SYSTEM UNITS prompt screen.

DigitalFlow™ GS868 Startup Guide 27

Chapter 2. Initial Setup

2.5.3 1- and 2-Channel Meters (cont .)

6. Use the [F1]-[F4] keys to select the Total Decimal Digits (the desired number of digits to the right of the decimal

point) in the totalized flow display.

7. If the

Static Density? prompt in the ADVAN submenu (SETUP menu) is set to NO, the GS868 returns to the initial User

Program screen. Otherwise, proceed as follows:

a. Use the

[F1]-[F4] keys to select the Mass Flow units, listed in Table 5 below.

Table 5: Available Mass Flow Units

English Mass Flow Units Metric Mass Flow Units

LB- Pounds KG - Kilograms

KLB - Thousands of Pounds

MMLB - Millions of Pounds

TO NS - Ton s Tonnes - Met ric Ton s

b. Use the

c. Use the

[F1]-[F4] keys to select the Mass Flow Time units.

[F1]-[F4] keys to select the MDOT DECIMAL DIGITS (the number of digits to the right of the decimal

point) for displaying mass flow.

d. Use the

e. Use the

[F1]-[F4] keys to select the Mass (Totalizer) units, listed in Table 5 above.

[F1]-[F4] to specify the Mass Decimal Digits (the number of digits to the right of the decimal point) for

displaying totalized mass flow. The meter returns to the initial User (or Channel) Program screen.

28 DigitalFlow™ GS868 Startup Guide

Chapter 2. Initial Setup

2.6 Entering Pipe Data

The PIPE submenu permits entry of the transducer and pipe specifications. To program this menu, complete the following steps:

1. At the User (or Channel) Program screen, press

[F3] to program the PIPE submenu.

2.6.1 Transducer Number

2. Enter the Transducer Number (normally engraved on the head of the transducer). Press [ENT]. If there is no

engraved number, complete the steps below. Otherwise, proceed to step 3.

IMPORTANT: Special transducers, which have no engraved number on the head, are rarely used. Examine the

transducer head carefully for a number.

a. Assign a number between 91 and 99 to the Special Transducer and press

[ENT]. (The meter will only accept

values from 1 to 199.)

b. Use the

] and [F1]-[F4] keys to select the Frequency of the special transducer. The meter can not transmit an

excitation voltage at the transducer’s natural frequency without this data.

c. Enter the special transducer Time Delay (Tw) value supplied by the factory. Press

[ENT]. (The meter will only

accept values from 0 to 1000 sec.)

Note: Tw is the time required for the transducer signal to travel through the transducer and its cable. This time delay

must be subtracted from the transit times of the upstream and downstream transducers to ensure an accurate measurement.

2.6.2 Pipe OD

3. Enter the known Pipe OD or circumference and use the [F1]-[F4] keys to select the appropriate units. Press [ENT].

(The meter will only accept values from 1/8 to 648 in.) The option bar choices may appear in English or Metric units.

Obtain the required information by measuring either the pipe outside diameter (OD) or circumference at the transducer installation site. The data may also be obtained from standard pipe size tables. Table 6 below lists the available English and metric OD units.

Table 6: Available Pipe OD Units

English Metric

inch = pipe OD in inches mm = pipe OD in millimeters

feet = pipe OD in feet m = pipe OD in meters

in/PI = pipe circumference in inches mm/PI = pipe circumference in millimeters

ft/PI = pipe circumference in feet m/PI = pipe circumference in meters

2.6.3 Pipe Wall

4. Use the numeric keys to enter the known thickness of the Pipe Wall. Press [ENT].

If the pipe wall thickness is not available, look up the value in a table of standard pipe size data or use the Model GS868’s on-line Help Menu (see the Programming Manual for details).

DigitalFlow™ GS868 Startup Guide 29

Chapter 2. Initial Setup

2.6.4 Path Length

5. Press [F1] = inch or [F2] = feet to select the units. Then, enter the Path Length (P) of the ultrasonic signal. Press

[ENT]. (The meter will only accept values from 1/8 to 900 in.)

Note: The factory has calculated both the transducer signal path length

(P) and the transducer signal axial length (L),

based on the exact transducer configuration used for the application. These values are engraved on the flowcell and/or are included in the documentation supplied with the meter.

2.6.5 Axial Length

6. Press [F1] = inch or [F2] = feet to select the units.Then, enter the Axial Length (L) of the ultrasonic signal and press

[ENT].

Note: The factory has calculated both the transducer signal path length

(P) and the transducer signal axial length (L),

based on the exact transducer configuration used for the application. These values are engraved on the flowcell and/or are included in the documentation supplied with the meter.

2.6.6 Fluid Type

7. Press [F1] = steam or [F2] = any other gas to select the Fluid Type.

OTHER was selected, enter the speed of sound (in feet per second) in the gas to be measured. Press [ENT]. (The

a. If

meter will only accept values from 125 to 9000 ft/sec.)

2.6.7 Reynolds Correction

8. The Reynolds Correction factor is a number based on the kinematic viscosity and flow rate of the gas. At the prompt, press

[F1] to turn Reynolds Correction off, or [F2] to turn it on.

a. If you select Reynolds Correction, the GS868 asks for the Kinematic Viscosity of the gas (available in the

brochure Sound Speeds and Pipe Size Data, 914-004). Use the numeric keys to enter the desired value and

[ENT].

press

2.6.8 Calibration Factor

9. Enter a value for the flow Calibration Factor and press [ENT]. The default value is 1.00. (The meter will only accept values from 0.5000 to 2.0000.) The meter will exit the Program screen.

PIPE submenu and return to the initial User (or Channel)

30 DigitalFlow™ GS868 Startup Guide

Procedure Options

Chapter 2. Initial Setup

After completing the above steps, the meter returns to the

User (or Channel) PROGRAM prompt. Continue as follows:

• To continue programming the meter, refer to the menu maps in Appendix A of the Programming Manual and

navigate to the desired menu. Then, proceed to the appropriate section of the manual for instructions.

• To leave the User Program and retain the previous settings, press [EXIT] once (for a 1-channel GS868) or twice

(for a 2-channel GS868) and then press discarded and you will be returned to the data display.

[F1] = NO at the SAVE prompt. Any programming changes will be

• To leave the User Program and return to measurement mode, press [EXIT] once (for a 1-channel GS868) or twice

(for a 2-channel GS868) and then press entered into the meter’s memory, and you will be returned to the data display.

Note: See the Programming Manual for instructions on using the

Proceed to Chapter 3, Operation, for instructions on taking measurements or refer to the Programming Manual for instructions on programming the Model GS868’s advanced features.

[F2] = YES at the SAVE prompt. Your programming changes will be

SAVE submenu.

DigitalFlow™ GS868 Startup Guide 31

Chapter 2. Initial Setup

32 DigitalFlow™ GS868 Startup Guide

PIPE

I/O

SYSTMACTIV

F1 F2 F3 F4

PROG

F2 F1

BURST BURST

(1-Channel)

F1 F2

ENG METRC

F1 F2

AUTO

MNUAL

F1 F2

ACM KACM

F3F2

KACF

ACF

/DAY

/HR

/MIN

/SEC

(1-Channel)

SAVE

GLOBL

CH2

CH1

Channel PROGRAM status

OFF

(1-Channel)

Channel status

S/M

Skan

CHANNEL LABEL

CHANNEL MESSAGE

SITE LABEL SITE MESSAGE SYSTEM UNITS

F1 F2

PSIa

PSIg

F1 F2

BARa

BARg

F3 F4

KPaa

KPag

(Metric)

GAGE PRESSURE

F1 F2

STAND ACTUL

F4 F1

SCM KSCM

F2F1

KSCF

SCF

(Metric)

F1 F2

ACM KACM

F3F2

KACF

ACF

F4 F1

SCM KSCM

F2F1

KSCF

SCF

(Metric)

F4 F1

TONS KG

F3F2

KLB

MMLB

(Yes)

MASS FLOW

(Metric)

/DAY

F3F2

/MIN

/SEC /HR

F3F2

F4 F1

TONS KG

F3F2

KLB

MMLB

(Metric)

F3F2

F4 F1

500k 25k

F3F2

100k

50k

200k

SPECIAL TRANSDUCER #

33k

SPEC

TRANSDUCER NUMBER

F1F2

feet

inch

m/Pft/PIin/PI mm/P

F4F3F4F3

(Metric)

feet

inch

F4F3F2F1

(Metric)

mmm

feet

inch

F2F1

OTHERSTEAM

F2F1

YESNO

Reynolds Correction?

FLUID SOUNDSPEED

CALIBRATION FACTOR

KINETIC VISCOSITY

NOTE: Plain text represents prompt area messages and boxed text represents option bar choices. Fx represent function keys to select option bar choices.

(2-Channel)

STOPWATCH TOTALIZER

VOLUMETRIC UNITS

VOLUMETRIC TIME

(2-Channel)

(2-Channel))

PROGRAM status

Site status

(English)

EQUATION

MMACF

MMSCF

MMACM

MMSCM

(English)

VOL DECIMAL DIGITS

TOTALIZER UNITS

MMACF

MMSCF

MMACM

MMSCM

(English)

VOL DECIMAL DIGITS

TONNE

(No)

(English)

MASS FLOW TIME

MDOT DECIMAL DIGITS

TONNE

(English)

MASS DECIMAL DIGITS

MASS (TOTALIZER)

FREQUENCY

(English)PIPE OD

(English)

AXIAL LENGTH L

PIPE WALL

PATH LENGTH P

FLUID TYPE

Skan/Measure Mode PRESSURE UNITS

Chapter 2. Initial Setup

DigitalFlow™ GS868 Startup Guide 33

Figure 12: Model GS868 Initial Setup Menu Map

Chapter 2. Initial Setup

DigitalFlow™ GS868 Startup Guide 34

Chapter 3. Operation

3.1 Introduction

See Chapter 1, Installation, and Chapter 2, Initial Setup, to prepare the system for operation. When the meter is ready to take measurements, proceed with this chapter. The following specific topics are discussed:

• Powering Up

• Using the Display

• Taking Measurements

Note: All inputs and outputs of the Model GS868 are calibrated at the factory, prior to shipment. If it becomes

necessary to recalibrate any of the inputs and/or outputs, see Chapter 1, Calibration, of the Service Manual.

WARNING!

as described in this manual. In addition, be sure to follow all applicable local safety codes and regulations for the installation of electrical equipment.

To ensure the safe operation of the Model GS868, it must be installed and operated

DigitalFlow™ GS868 Startup Guide 35

Chapter 3. Operation

SITE1 PIPE1 SITE1 PIPE1

VEL VOLUM

-TOTL

+TOTL

Velocity Volumetricm/s SCM/M

6.95

1038.7

3.2 Powering Up

Because the Model GS868 does not have an ON/OFF switch, it will power up as soon as the connected power source is energized.

Note: For compliance with the European Union’s Low Voltage Directive, this unit requires an external power

disconnect device such as a switch or circuit breaker. The disconnect device must be marked as such, clearly visible, directly accessible, and located within 1.8 m (6 ft) of the Model GS868.

Immediately upon power up, the Model GS868 displays the GE logo and the software version in the left pane of the display window. The Model GS868 performs a series of internal checks and display the results in the right pane of the display window.

Note: If the Model GS868 fails any of the internal checks, try disconnecting the power and then re-powering the unit.

If the Model GS868 continues to fail any of the internal checks, contact the factory for assistance.

After successfully performing the internal checks, the Model GS868 begins taking measurements. The power up display is replaced by a measurement mode display similar to that shown in Figure 13 below.

Note: As a minimum, the system and pipe parameters (for each installed channel of a 2-channel meter) must be

entered before the Model GS868 can display valid data. Refer to Chapter 2, Initial Setup, for specific instructions.

Figure 13: A Typical Measurement Display

Proceed to the next section for a description of the components of the Model GS868 display screen.

36 DigitalFlow™ GS868 Startup Guide

Chapter 3. Operation

Ch1 no label

gSITE

CH1

CH2

SUM

DIF

Velocity Ft/s

6.95

Ch1 E1: Low Signal

Pointer

Prompt

Area

Locator Bar

Option Bar

Error Code

3.3 Using the Display

The Model GS868 display is divided into a left pane and a right pane. The two screen panes can be set independently to display any of the available measurement or diagnostic parameters. The components of a typical measurement mode screen are shown in Figure 14 below.

Figure 14: Display Screen Components

Both panes of the display screen are continuously updated, but only one pane at a time may be programmed or changed. To select a pane, press the corresponding side of the screen pane will have function names in the option bar, while the other screen pane will have a blank option bar. See the Programming Manual for detailed instructions on using the keypad.

As shown in Figure 14 on page 37, each pane of the display screen is divided into the following three general areas:

[SCREEN] key on the keypad. The currently selected

• the locator bar

• the prompt area

• the option bar.

The upper portion of the screen pane is called the locator bar. While the meter is taking measurements, the locator bar displays the name of the currently selected site file. In addition, the locator bar identifies the task that is currently being performed and the status of that task. For example, pressing the display

“PROGRAM” and “Start” to indicate that the meter is ready to be programmed from the start of the User Program.

[PROG] key on the keypad will cause the locator bar to

DigitalFlow™ GS868 Startup Guide 37

Chapter 3. Operation

3.3 Using the Display (cont.)

At various times, one or more of the following four symbols may be displayed on the far right of the locator bar:

• : This symbol, which is called the pointer, indicates that additional option bar entries are available. These options

can be accessed by using the ] and ] keys.

• *: A flashing asterisk indicates that the Model GS868 is currently logging information. See the Programming

Manual for instructions on creating a log file.

• S or S

next keystroke only, while “S using the keypad.

: This symbol indicates the status of the red [SHIFT] key. “S” indicates that the [SHIFT] key is activated for the

” indicates that the [SHIFT] key is locked. See the next section for instructions on

• T: This symbol indicates that the Model GS868 is currently totalizing data.

The middle portion of the screen pane is the prompt area. This area displays data, graphs, and logs in measurement mode and menu prompts in programming mode. In addition, error code messages, which are described in the Service Manual, are displayed in the prompt area.

The lower portion of the screen pane is called the option bar. The option bar displays the functions assigned to the four keys immediately below the display screen ( key to select the function listed in the option bar immediately above it. If more than four functions are available, a pointer appears on the far right of the locator bar. Press the ] or ] keys to display the additional functions on the option bar.

For information about other symbols and text that may appear on the display screen, refer to the Service Manual.

[F1]-[F4] for the left pane and [F5]-[F8] for the right pane). Press a function

38 DigitalFlow™ GS868 Startup Guide

Chapter 3. Operation

3.4 Taking Measurements

The Model GS868 is capable of displaying several different variables in a variety of formats. However, this manual will only discuss the basic measurement displays in the default screen format. Refer to the Programming Manual for instructions on setting up alternate screen displays and see the Service Manual for a discussion of the diagnostic parameters listed under the

Note: This section assumes that the left pane of the display screen is currently active. However, the same instructions

apply equally to the right screen pane, when it is active. Just change the function keys from

For a 2-channel Model GS868, the following initial screen appears immediately upon completion of the internal checks. As an example, the display shows the measured velocity in ft/sec for Channel 1.

DIAG option.

[F1]-[F4] to [F5]-[F8].

Ch1 Channel Label gSITE

Ch1 Velocity Ft/s

To select a different channel display option, press [F1]-[F4] (or ] and

[F1]). See Table 7 below for a complete description of the available

options.

6.95

(error codes appear here)

CH1 CH2 SUM DIF

Table 7: Channel Display Options

Option Bar Choice Description

[F1] = CH1 Channel 1

[F2] = CH2 Channel 2

[F3] = SUM (Channel 1) + (Channel 2)

[F4] = DIF (Channel 1) - (Channel 2)

]

+ [F1] = AVE [(Channel 1) + (Channel 2)]/2

The following screen appears after selection of the channel mode display option for a 2-channel Model GS868 or immediately after the internal checks for a 1-channel Model GS868.

(Ch1) label gSITE

(Ch1) Velocity Ft/s

Use the [F1]-[F4], ] and ] keys to select the desired display parameter option. Refer to Table 8 on page 40 for a complete description of the available options.

6.95

(error codes appear here)

VEL VOLUM +TOTL -TOTL

Note: Ch1 (or Ch2), which is shown in parentheses above, appears only with a 2-Channel Model GS868.

DigitalFlow™ GS868 Startup Guide 39

Chapter 3. Operation

3.4 Taking Measurements (cont.)

Table 8: Measurement Parameter Options

Option Bar Choice Description

[F1] = VEL Flow Velocity

[F2] = VOLUM Volumetric Flow

[F3] = +TOTL Forward Totalized Volume Flow

[F4] = -TOTL Reverse Totalized Volume Flow

+ [F1] = TIME Total Flow Measurement Time

]

+ [F2] = MDOT Mass Flow

]

+ [F3] = +MASS Forward Totalized Mass Flow

+ [F4] = -MASS Reverse Totalized Mass Flow

]

+ ] + [F1] = DIAG Diagnostic

The DIAG option listed in Table 8 above provides access to a wide variety of diagnostics parameters. See Chapter 3, Diagnostics, of the Service Manual for a complete description of these options.

By following the instructions in this section, the Model GS868 can be set up to display the desired channel option (for a 2-Channel meter) and the desired measurement parameter. To utilize the more advanced display capabilities of the Model GS868, refer to the Programming Manual and/or the Service Manual for the instrument.

40 DigitalFlow™ GS868 Startup Guide

Chapter 3. Operation

3.4.1 Foundation Fieldbus Communications

Foundation Fieldbus provides a means of communicating with the flowmeter. The patent numbers which apply are 5,909,363 and 6,424,872.

This Foundation Fieldbus device supports 2 Analog Input (AI) blocks, which can be configured to supply the following measurements on the network (see Table 9 below).

Table 9: Available Measurements Using a Foundation Fieldbus Device

Channel 1 Units Channel 1 Units Channel 1 Units

Ch1 Velocity ft/s or m/s* Ch1 Mass Flow MASS_U Ch1 SSUP none

Ch1 Act Volumetric

VOL_U

Ch1 Fwd Mass Totals

MTOT_U Ch1 SSDN none

Ch1 Std Volumetric

VOL_U

Ch1 Fwd Totals TOT_U

Ch1 Rev Mass Totals

Ch1 #Mass Tot Digits

MTOT_U Ch1 Sound Speed ft/s or m/s*

none Ch1 Density*** see note

Ch1 Rev Totals TOT_U Ch1 Timer sec Ch1 Temperature Deg F or C*

Ch1 #Tot Digits** none Ch1 Error Code none Ch1 Pressure PRESS_U

*Metric or English units are determined by the setup of the flowmeter.

**Totalizer digits are available for informational purposes only. Respective totals are automatically scaled

by the Tot Digits value selected in the flowmeter setup.

***If the meter is outputting Mole Weight, the unit is “mw”, otherwise it is the programmed pressure unit.

VOL_U, TOT_U, MASS_U, MTOT_U and PRESS_U are determined by the units chosen for these

measurements in the flowmeter setup. See the instrument User's Manual for the setup of these

parameters.

DigitalFlow™ GS868 Startup Guide 41

Chapter 3. Operation

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42 DigitalFlow™ GS868 Startup Guide

Chapter 4. Specifications

4.1 General

The general specifications for the Model GS868 flowmeter are divided into the following categories:

4.1.1 Hardware Configuration

Package Options: Epoxy-coated aluminum (standard)

Stainless steel

Explosion-proof

Physical: Size: 14.24  11.4  5.12 in. (36.2  29  13 cm)

Weight: 11 lb (5 kg)

4.1.2 Environmental

Operating Temperature: -4° to 131°F (–20° to 55°C)

Storage Temperature: –67° to 167°F (–55° to 75°C)

4.1.3 Flow Accuracy

% of Reading:1% to 2% of reading typical

Note: Accuracy depends on pipe size and whether measurement is 1-path or 2-path. Accuracy to ±0.5% of reading

may be achievable with process calibration.

4.1.4 Range

Bidirectional: –150 to –0.1 ft/s (–46 to –0.03 m/s)

0.1 to 150 ft/s (0.03 to 46 m/s)

4.1.5 Rangeability (Overall)

1500:1

4.1.6 Repeatability

0.2 to 0.5%

Note: Specifications assume a fully developed flow profile (typically 20 diameters upstream and 10 diameters

downstream of straight pipe run) and flow velocity greater than 3 ft/s (1 m/s).

4.1.7 Response Time

For a 0–90% Step Change: 3 seconds to within 1% of final value

DigitalFlow™ GS868 Startup Guide 43

Chapter 4. Specifications

4.2 Electrical

The electrical specifications for the Model GS868 flowmeter are divided into the following categories:

4.2.1 Power Supply

Input Options: 110 to 120 VAC, 50/60 Hz with 1.0 A Slo-Blo Fuse

220 to 240 VAC, 50/60 Hz with 0.5 A Slo-Blo Fuse

12 to 28 VDC with 3.0 A Slo-Blo Fuse

4.2.2 Power Usage

20 W maximum

4.2.3 Operating Mode

Transit-time flow measurement for gas transducers.

4.2.4 European Compliance

This unit complies with EMC Directive 2004/108/EC and 2006/95/EC Low Voltage Directive (Installation Category II, Pollution Degree 2), and PED 97/23/EC for DN<25.

4.2.5 Input/Output Specifications

Keypad: 39-key membrane keypad with tactile feedback

Display: Both single- and dual-channel models have a software-configurable 64 x 128-pixel LCD graphic

display, divided into two display areas (panes)

Digital Interfaces:

• Standard: RS232

• Optional: RS485 (multiuser)

• Optional: MODBUS protocol

• Optional: Ethernet TCP/IP

• Optional MODBUS TCP/IP (Ethernet)

Analog Input Options:

Select up to 2 boards of one of the following types:

1. Transmitter Input Board with two isolated 0/4-20 mA inputs and 24-V loop power.

2. RTD Input Board with two isolated 3-wire RTD inputs;

Span –148° to 662°F (–100° to 350°C). Inputs of the following types may be used:

44 DigitalFlow™ GS868 Startup Guide

Chapter 4. Specifications

4.2.5 Input/Output Specifications (cont.)

Analog Input Options (cont.):

a. Temp from –200° to +1,000°C

b. Pressure from 0–3000 psig

0 to 500 bar

c. Steam quality from 0.0 to 1.0

Analog Output Options:

All meters come with two isolated 0/4–20 mA current outputs (550  maximum load).

Optional selection of up to 3 additional output boards, each with four isolated 0/4–20 mA outputs (1000  maximum load).

Totalizer/Frequency Output Options:

Select up to 3 Totalizer/Frequency Output Boards, each with four outputs per board, 10 kHz max.

All boards allow software-selectable functioning in two modes:

Totalizer Mode: one pulse per defined unit of parameter

(e.g., 1 pulse/SCF).

Frequency Mode: pulse frequency proportional to magnitude of parameter (e.g., 10 Hz = 1 gpm).

Alarm Options:

Select up to 2 boards of one of the following types:

Basic Relay Board with three general purpose Form-C relays. Hermetic Relay Board with three hermetically sealed Form-C relays.

Maximum Relay Ratings:

120 VAC AC Voltage, 28 VDC DV Voltage, 5A AC/DC Current,

60 VA AC Power, 30 W DC Power (General Purpose) or

56 W DC Power (Hermetically Sealed)

DigitalFlow™ GS868 Startup Guide 45

Chapter 4. Specifications

4.3 Operational

The operational specifications for the Model GS868 flowmeter are divided into the following categories:

4.3.1 Flow Computer (Built-in)

The flow computer has three operating modes:

1. RUN (Normal operating mode):

Flow velocity equations are solved and statistical data rejection techniques are employed to provide reliable and repeatable results.

2. PARAMETER:

Allows the operator to program the meter.

3. DIAGNOSTIC:

Allows the operator to calibrate inputs and outputs and to display certain diagnostic information such as checksums, signal strength, calculated gas sound speed, etc.

4.3.2 Data Logging

Keypad-programmable for setting up log units, update interval, start and stop times. Memory capacity for more than 43,000 flow data points in a linear or circular log.

4.3.3 Display Functions

Liquid crystal graphic display shows flow in numeric or graphic format. Also displays logged data and diagnostics.

4.3.4 Printer Signal Output

Supports wide variety of thermal and impact printers. Output data in numeric or graphic (“strip chart”) format.

46 DigitalFlow™ GS868 Startup Guide

Chapter 4. Specifications

4.4 Transducer

The transducer specifications for the Model GS868 flowmeter are divided into the following categories:

4.4.1 Type

Standard: T9 Optional: BWT™ System

4.4.2 Temperature Range

–190° to 450°C (–310° to 842°F) (overall)

4.4.3 Pressure Ranges

Standard: 0 to 2700 psig (1 to 187 bar) Optional: 3480 psig (240 bar) maximum

4.4.4 Materials

Standard: Stainless steel, titanium

Optional: Monel

, Hastalloy®

4.4.5 Connections

Cable Length: Up to 1000 ft (300 m)

Housing Options:

Explosion-proof (Class I, Group C & D, Division I)

Flameproof (INIEX/ISSeP certified for EEx d II C T6)

Weatherproof (Type-4X, IP65)

Type -7

DigitalFlow™ GS868 Startup Guide 47

Chapter 4. Specifications

4.5 Flowcell

The flowcell specifications for the Model GS868 flowmeter are divided into the following categories:

Spoolpiece

Process Connections:

Flanged typical, welded optional

Transducer Connections:

1.5 in., 300 lb. flange for T9 transducer

1.5 in., 150-2,500-lb. flange for BWT transducers

Cold Tap

Process Connections:

N/A

Transducer Connection:

PanaPort cold tap kit

Optional: ANSI flanged 150 to 300#

Pipe Size & Materials

Outside Diameter (OD):

2 to 48 in. (50 to 1200 mm).

Materials:

All metals. Consult GE for other materials.

48 DigitalFlow™ GS868 Startup Guide

Appendix A. CE Mark Compliance

A.1 Introduction

For CE Mark compliance, the Model GS868 flowmeter must be wired in accordance with the instructions in this appendix.

IMPORTANT: CE Mark compliance is required only for units intended for use in EC countries.

A.2 Wiring

The Model GS868 must be wired with the recommended cable, and all connections must be properly shielded and grounded. Refer to Table 10 below for the specific requirements.

Table 10: Wiring Modifications

Connection Cable Type Termination Modification

RG62 a/u Add metallic cable clamp from braid to

Transducer

Input/Output

Armored RG62 a/u or conduit None - grounded using a cable gland.

22 AWG shielded (e.g. Baystate #78-1197) Terminate shield to chassis ground.

Armored conduit None - grounded using a cable gland.

chassis ground.

Power

14 AWG, 3 conductor, shielded (e.g. Belden #19364)

Armored Conduit None - grounded using a cable gland.

An external ground to the chassis is required.

A.3 External Grounding

For CE Mark compliance, the electronics enclosure and the transducer fixture must each have an external ground wire attached.

Note: If the Model GS868 is wired as described in this appendix, the unit will comply with the EMC Directive

2004/108/EC.

DigitalFlow™ GS868 Startup Guide 49

Appendix A. CE Mark Compliance

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50 DigitalFlow™ GS868 Programming Manual (1-Channel)

Appendix B. Data Records

B.1 Option Cards Installed

Whenever an option card is installed in one of the Model GS868’s expansion slots, record the type of card and any additional setup information in the appropriate row of Table 11 below.

Table 11: Option Cards Installed

Slot # Type of Option Card Additional Setup Information

0 Analog Outputs (A, B)

DigitalFlow™ GS868 Startup Guide 51

Appendix B. Data Records

B.2 Initial Setup Data

After the Model GS868 flowmeter has been installed, some initial setup data must be entered via the User Program, prior to operation. Record that information in Table 12 below.

Table 12: Initial Setup Data

General Information

Model # Reference

Software Vers. Date

Serial # Z Dimension

Measurement Method - ACTIV

Channel 1 Channel 2

Channel Status Off Burst Channel Status Off Burst

Measure Mode Skan S/M Measure Mode Skan S/M

System Parameters - SYSTEM

1-Channel 2-Channel

Site Label Chan.1 Label

Site Message Chan. 1 Message

System Units English Metric Chan. 2 Label

Pressure Units Chan. 2 Message

Stopwatch Total. Auto Manual

1-Channel and 2-Channel

Channel 1 Channel 2 (if applicable)

Gas Equation Standard Actual Gas Equation Standard Actual

Vol. Units Vol. Units

Vol. Time Units Vol. Time Units

Vol. Dec. Digits Vol. Dec. Digits

Totalizer Units Totalizer Units

Tot. Dec. Digits Tot. Dec. Digits

Mass Flow Mass Flow

Mass Flow Time Mass Flow Time

MDOT Dec. Dig. MDOT Dec. Dig.

Mass Totalizer Mass Totalizer

Mass Dec. Dig. Mass Dec. Dig.

Pipe/Transducer Parameters - PIPE

Channel 1 Channel 2 (if applicable)

Std. Trans. # Std. Trans. #

Spec. Trans. # Spec. Trans. #

Spec. Trans. Hz Spec. Trans. Hz

Spec. Trans. Tw Spec. Trans. Tw

Note: table is continued on next page.

52 DigitalFlow™ GS868 Startup Guide)

Appendix B. Data Records

Table 12: Initial Setup Data (cont.)

Pipe/Transducer Parameters (cont.) - PIPE

Channel 1 (cont.) Channel 2 (cont.)

Pipe O.D. Pipe O.D.

Pipe Wall Pipe Wall

Path Length (P) Path Length (P)

Axial Length (L) Axial Length (L)

Fluid Type Steam Other Fluid Type Steam Other

Other/Sndspd Other/Sndspd

Mass Flow No Yes Mass Flow No Yes

Fluid Density Fluid Density

Multi K-factors Off On Multi K-factors Off On

Edit Table No Yes Edit Table No Yes

K-factor Table K-factor Table

K-Factor # Velocity K-Factor K Factor # Velocity K-Factor

10 10

11 11

12 12

13 13

14 14

15 15

16 16

17 17

18 18

19 19

20 20

Cal. Factor Cal. Factor

DigitalFlow™ GS868 Startup Guide 53

Appendix B. Data Records

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54 DigitalFlow™ GS868 Startup Guide

Appendix C. Optional Enclosures

C.1 Introduction

Upon request the Model GS868 flowmeter may be supplied in an enclosure other than the standard Type-4X enclosure described in Chapter 1, Installation, of this manual. Although the standard installation and wiring instructions still apply in general terms, some of the details may vary for different enclosure types. Refer to the appropriate sections of this appendix for the specific type of enclosure provided.

C.2 Rack Mount Enclosure

The Model GS868 flowmeter is available in a rack mount enclosure for installation in a standard 19” electronics rack. Refer to Figure 15 on page 57 for the dimensions of this unit. Simply slide the Model GS868 into the rack at the desired height and fasten the unit securely to the rack with four screws in the locations provided at the sides of the front panel.

After the unit has been physically mounted into the rack, proceed to the next section for instructions on wiring the meter.

C.3 Rack Mount Wiring

The rack mount Model GS868 requires exactly the same electrical connections as the standard version. However, the locations and type of connectors used for the various components are different. Refer to Figure 16 on page 58 and complete the following steps:

1. Wire the power input on the right side of the rear panel as follows:

a. Make sure a fuse (item #4) of the proper size and type is installed.

b. Connect the female end of the line cord provided to the power input receptacle (item #3).

c. Connect the earth ground screw terminal (item #2) to a ground point on the rack.

2. Wire the transducers as follows:

a. Connect the pair of cables supplied with the meter to the Channel 1 upstream and downstream BNC transducer

connectors on the left side of the rear panel.

b. For a 2-Channel meter, repeat the above step for the Channel 2 transducer connectors (if the second channel is

to be used).

c. Complete the transducer wiring in accordance with the instructions in Chapter 1, Installation, of this manual.

3. Wire the 0/4-20 mA analog outputs at the left side of the rear panel in accordance with the instructions in Chapter

1, Installation, of this manual.

4. Wire the RS232 serial port by completing the following steps:

a. Purchase or prepare a suitable serial cable. This cable should have a standard female DB9 connector, wired as

shown in Figure 16 on page 58, for connection to the rear panel of the Model GS868. The other end should be as required for the external device.

b. Complete the serial port wiring in accordance with the instructions in Chapter 1, Installation, of this manual.

5. Wire any installed option cards using the same procedures described in Chapter 1, Installation, of this manual and

the pin # assignments shown in Figure 16 on page 58.

DigitalFlow™ GS868 Startup Guide 55

Appendix C. Optional Enclosures

C.3 Rack Mount Wiring (cont.)

Note: The pins on the option card connectors are numbered from pin #1 on the top to pin #8 (or #9) on the bottom.

6. Place the power switch (item #1) in the ON position.

The Model GS868 is now completely wired. Proceed to Chapter 2, Initial Setup, of this manual for further instructions.

C.4 Rack Mount Front Panel

The keypad and LCD display for the rack mount Model GS868 are located on the front panel. These items are identical in form and function to those used on the standard Type-4X enclosure, but the layout is somewhat different.

Refer to Figure 17 on page 59 for the front panel layout of the rack mount Model GS868 and follow the standard procedures detailed in the main body of this manual.

56 DigitalFlow™ GS868 Startup Guide

Appendix C. Optional Enclosures

OPTION CARDS

GS868

F2F1F3 F5 F7

CH2

CH1

ANALOG OUT

TRANSDUCER CONNECTIONS

221 CRESCENT STREET

SERIAL MODEL

PHONE 617 899-2719 WALTHAM, MA 02154

PANAMETRICS

MADE IN U.S.A.

PRNT

LOG

SCREEN

CAL

HELP

CLR

DISP

PROG

EXIT

ENT

BA C G

97ED8

TOTL /FREQ

RS232

USE ONLY WITH A 250V FUSE

BEFORE SERVICING DISCONNECT POWER

100 - 120 VAC

FUSE 1 AMP

OFF

19.00 (483)

18.25 (464)

2.25 5.22

11.37

11.82

13.13

4.19 (106)

15.70 (399)

3.31 (84)

14.83 (377)

16.99 (432)

NC3

NC46

NO7

NC9

RTN

SIG

RTN

SIG

RTN

SIG

8 7

RTN INLO INHI

+24V45

3 INLO

RTN

8 7 6

A / OUT

NO1

ALARMS

RTN

SIGC2

21INHI

+24V

A / IN

2 COM

COM

COM COM

7 6

RTD IN

(289)

(300)

(333)

(57) (133)

Figure 15: Model GS868 Rack Mount Enclosure (ref. dwg #712-1078)

DigitalFlow™ GS868 Startup Guide 57

Appendix C. Optional Enclosures

OPTION CARDS

CH2

CH1

ANALOG OUT

TRANSDUCER CONNECTIONS

MODEL

RS232

USE ONLY WITH A 250V FUSE

100 - 120 VAC

FUSE 1 AMP

OFF

Unused

Input A - Common (C)

Input A - SIG(+)

Input B - Common (C)

Input B - SIG(+)

Unused

Description

Input A - Common (C)

Description

Output A - SIG(+)

Output A - RTN(-)

Output B - SIG(+)

Output B - RTN(-)

0/4-20 mA ANALOG OUTPUTS

Description

CH1 TRANSDUCER

Description

Downstream XDCR

Upstream XDCR

CH2 TRANSDUCER

ON/OFF Switch1

Relay C - Normally Closed (NC)

Relay B - Common (C)

Relay B - Normally C

losed (NC)

Relay C - Normally Open (NO)

Relay C - Common (C)

Relay B - Normally Open (NO)

Relay A - Normally Closed (NC)

Relay A - Common (C)

Relay A - Normally Open (NO)

Power Cord

Earth Ground

One option card of each available type is shown in this diagram. These cards are not always installed in the same slots used for this example.

NOTE

DescriptionPin #

ALARM RELAYS

Input A - INHI

Input B - RTN

Input B - +24V

Input B - INHI

Input B - INLO

Input A - +24V

Input A - INLO

Input A - RTN

0/4-20 mA ANALOG INPUTS

Pin # DescriptionDescriptionPin #

Output B - SIG(+)

Output B - RTN(-)

Output A - SIG(+)

Output A - RTN(-)

Output D - SIG(+)

Output D - RTN(-)

Output C - SIG(+)

Output C - RTN(-)

0/4-20 mA ANALOG OUTPUTS

Pin #Pin # Description

Output A - Normally Open (NO)

Output D - Normally Open (NO)

Output C

- Common (C)

Output C - Normally Open (NO)

Output D - Common (C)

Output A - Common (C)

Output B - Common (C)

Output B - Normally Open (NO)

TOTALIZER/FREQUENCY OUTPUTS

BNC #

directly accessible and located within 1.8 m (6 ft) of the

Model GS868.

DTR - Data Terminal Ready

RS232 SERIAL PORT (DB9)

POWER INPUT

Description

RX - Receive

NOTE:

Item #

Pin # Description

TX - Transmit

BNC #

Pin #

RTD INPUTS

Fuse4

No Connection

Upstream XDCR

Downstream XDCR

CTS - Clear to Send

No Connection

RTN - Digital Return

No Connection

Covered Option Card Slot

NC3

3 4

5 6

7 8

NC46

NO7

NC9

RTN

SIG

RTN

SIG

RTN

SIG

RTN

INLO

INHI

+24V45

3INLO

RTN

A / OUT

1 2

NO1

ALARMS

RTN

SIGC2

21INHI

+24V

A / IN

2COM

COM

3 4

RTD IN

Figure 16: Model GS868 Rack Mount Enclosure - Wiring Diagram

DigitalFlow™ GS868 Startup Guide 58

GS868

PRNT

LOG

SCREEN

CAL

HELP

CLR

DISP

PROG

EXIT

ENT

BA C G

Handle

Mounting Holes Mounting Holes

Main Keypad

Console KeysFunction Keys

LCD Display

Handle

Appendix C. Optional Enclosures

Figure 17: Model GS868 Rack Mount Enclosure - Front Panel Layout

DigitalFlow™ GS868 Startup Guide 59

Appendix C. Optional Enclosures

DigitalFlow™ GS868 Startup Guide 60

Appendix D. Measuring P and L Dimensions

cos

---=

PCL1.2–=

Appendix D. Measuring P and L Dimensions

D.1 Introduction

When programming the PIPE menu of the Model GS868’s User Program, the path length (P) and the axial dimension (L) must be entered. These parameters are determined by measurements on the actual transducer installation, with P equal to the face-to-face distance between the transducers and L equal to the axial distance between the centers of the transducer faces.

The accuracy of the programmed P and L values is critical to precise flow rate measurements. If the factory supplies the flowcell for the system, the correct values will be included in the documentation supplied with the unit. For transducers installed on an existing pipe (see Figure 18 on page 62), P and L must be measured at the site. This appendix provides instructions for properly determining these dimensions.

D.2 Measuring P and L

Whenever possible, physically measure the face-to-face distance (P) and the axial distance (L) between the centers of the flat faces of the transducers. Refer to Figure 18 on page 62 for an illustration of the proper distances to measure in a typical installation.

In some situations only one of the required distances can be directly measured. When this happens, a knowledge of the installation angle () of the transducers, permits the second distance to be calculated from Equation D-1 below:

(1)

As an example, assume that the transducer installation angle is known to be 45° and the L distance is measured to be

10.00 inches. Then, the P distance is calculated to be P = 10.00/0.707 = 14.14 inches.

With a Bias 90° transducer installation, it sometimes happens that the only known parameters are the transducer angle

() and the centerline distance between the transducer bodies (CL). In these cases, it is still possible to calculate P and L by combining Equation D-1 above with the additional Equation D-2 below (see Figure 18 on page 62):

(2)

Standard GE 90° transducers have the face offset from the centerline of the body by 0.6 inches. Thus, a pair of

transducers has a total offset of 1.2 inches, as indicated in Equation D-2 above. For example, suppose that the transducer installation angle is 30° and CL is measured to be 12.00 inches. Then, P = 12.00 – 1.2 = 10.80 inches and L = 10.80 x 0.866 = 9.35 inches.

DigitalFlow™ GS868 Startup Guide 61

Appendix D. Measuring P and L Dimensions

Pipe O.D.

Pipe Thickness

180° Installation

Bias 90° Installation

Figure 18: Top View of Transducer Installations

62 DigitalFlow™ GS868 Startup Guide

Index

Abbreviations, Volumetric Units . . . . . . . . . . . . . . . . 27

ACTIV Submenu. . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Alarms Option Card

Connecting

Fail-Safe Operation . . . . . . . . . . . . . . . . . . . . . . . 14

Relay Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Analog Inputs Option Card

Connecting

Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . 15

Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Analog Outputs (Slot 0)

Connecting

Analog Outputs Option Card

Connecting

Axial Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Axial Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Cable

Serial Port

Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . 2, 3, 9

Calibration Factor . . . . . . . . . . . . . . . . . . . . . . . . . . 30

CE Mark Compliance . . . . . . . . . . . . . . . . . . . 1, 9, 49

Channel Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Channel Message. . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Connecting

See Part Name Connectors, Electrical

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

. . . . . . . . . . . . . . . . . . . . . . . . 6

Display

Channel Mode Options

Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Locator Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Locator Bar Symbols . . . . . . . . . . . . . . . . . . . . . . 38

Measurement Mode . . . . . . . . . . . . . . . . . . . . . . . 36

Metric or English . . . . . . . . . . . . . . . . . . . . . . . . . 26

Option Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Parameter Options . . . . . . . . . . . . . . . . . . . . . . . . 40

Pointer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Prompt Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Selecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Using . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

. . . . . . . . . . . . . . . . . . . . . 39

Electrical Connectors. . . . . . . . . . . . . . . . . . . . . . . . . 6

Electronics Console

Description

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Ethernet, Wiring the. . . . . . . . . . . . . . . . . . . . . . . . . 12

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Fieldbus Network . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Flowcell

Description

Installing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Fluid Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Foundation Fieldbus

Available Measurements

Communications . . . . . . . . . . . . . . . . . . . . . . . . . 41

Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Function Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Fuse Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

. . . . . . . . . . . . . . . . . . . . 41

Initial Setup

Data Table

Minimum Required . . . . . . . . . . . . . . . . . . . . . . . 23

Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Internal Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

DigitalFlow™ GS868 Startup Guide 1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Index

Lightning Protector, Connecting . . . . . . . . . . . . . . . . . 9

Locator Bar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

LVD Shroud . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

LVD Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Mass Flow Units

Available Options

Setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Measurements

Displaying

Parameter Options . . . . . . . . . . . . . . . . . . . . . . . . 40

Taki ng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36, 39

Measurements, Foundation Fieldbus . . . . . . . . . . . . . 41

MODBUS/TCP, Wiring the . . . . . . . . . . . . . . . . . . . 12

. . . . . . . . . . . . . . . . . . . . . . . . . . . 36, 39

. . . . . . . . . . . . . . . . . . . . . . . . 28

Option Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Option Card

Alarms

Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . 17

RTD Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Setup Information Table . . . . . . . . . . . . . . . . . . . . 51

Totalizer/Frequency Outputs. . . . . . . . . . . . . . . . . 16

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Parameter Options . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Path Length. . . . . . . . . . . . . . . . . . . . . . . . . . . . 30, 61

Pipe OD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Available Units . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Pipe OD, Programming . . . . . . . . . . . . . . . . . . . . . . 29

PIPE Submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Pipe Wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Pipe Wall, Programming . . . . . . . . . . . . . . . . . . . . . 29

Pointer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Power

Connecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Term inal B lock . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Powering Up

Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Internal Checks . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Preamplifier

Connecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Pressure Transmitter

Installing

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Prompt Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Rack Mount

Front Panel

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Return Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Reynolds Correction . . . . . . . . . . . . . . . . . . . . . . . . 30

RS232 Port

See Serial Port RTD Inputs Option Card

Connecting

RTD Temperature Transmitter . . . . . . . . . . . . . . . . . . 5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Screen, Selecting . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Security Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Serial Port

Cable

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Connecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . 10

Shroud

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

LVD

Plastic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Site Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Site Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Slot 0

See Analog Outputs (Slot 0) Special Transducer Specifications

Electrical

Flowcell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Operational . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Symbols, Locator Bar . . . . . . . . . . . . . . . . . . . . . . . 38

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

. . . . . . . . . . . . . . . . . . . . . . . . . 29

2 DigitalFlow™ GS868 Startup Guide

Index

SYSTM Submenu . . . . . . . . . . . . . . . . . . . . . . . . . . 26

for 1-Channel Meter. . . . . . . . . . . . . . . . . . . . . . . 26

for 2-Channel Meter. . . . . . . . . . . . . . . . . . . . . . . 27

Temperature Transmitter

Installing

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

RTD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Term inal B lock

Analog Outputs - I/O

Power - TB1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Serial Port - RS232 . . . . . . . . . . . . . . . . . . . . . . . 10

Transducers - CH1/CH2 . . . . . . . . . . . . . . . . . . . . . 9

Time Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Totalizer/Frequency Option Card

Connecting

Transducer Number . . . . . . . . . . . . . . . . . . . . . . . . . 29

Transducer, Special . . . . . . . . . . . . . . . . . . . . . . . . . 29

Transducers

180? Installation

Axial Dimension . . . . . . . . . . . . . . . . . . . . . . . . . 61

Bias 90? Installation. . . . . . . . . . . . . . . . . . . . . . . 61

Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2, 3, 9

Connecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Installation Angle. . . . . . . . . . . . . . . . . . . . . . . . . 61

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Path Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Transmitter

See Temperature or Pressure Transmitter

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

. . . . . . . . . . . . . . . . . . . . . . 10

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

. . . . . . . . . . . . . . . . . . . . . . . . . 61

Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Wiring

CE Mark Compliance

Foundation Fieldbus. . . . . . . . . . . . . . . . . . . . . . . 13

Option Card. . . . . . . . . . . . . . . . . . . . . See Card Name

Terminal Block . . . . . . . . . . . . . . . . . See Block Name

. . . . . . . . . . . . . . . . . . . . . . 49

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

User Program

ACTIV Submenu

Entering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Navigating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

PIPE Submenu. . . . . . . . . . . . . . . . . . . . . . . . . . . 29

. . . . . . . . . . . . . . . . . . . . . . . . . 25

Voltage, Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Volumetric Units . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

DigitalFlow™ GS868 Startup Guide 3

Index

4 DigitalFlow™ GS868 Startup Guide

Warranty

Each instrument manufactured by GE Sensing is warranted to be free from defects in material and workmanship. Liability under this warranty is limited to restoring the instrument to normal operation or replacing the instrument, at the sole discretion of GE Sensing. Fuses and batteries are specifically excluded from any liability. This warranty is effective from the date of delivery to the original purchaser. If GE Sensing determines that the equipment was defective, the warranty period is:

• one year from delivery for electronic or mechanical failures

• one year from delivery for sensor shelf life

If GE Sensing determines that the equipment was damaged by misuse, improper installation, the use of unauthorized replacement parts, or operating conditions outside the guidelines specified by GE Sensing, the repairs are not covered under this warranty.

The warranties set forth herein are exclusive and are in lieu of all other warranties whether

statutory, express or implied (including warranties or merchantability and fitness for a

particular purpose, and warranties arising from course of dealing or usage or trade).

Return Policy

If a GE Sensing instrument malfunctions within the warranty period, the following procedure must be completed:

1. Notify GE Sensing, giving full details of the problem, and provide the model number and serial number of the instrument. If the nature of the problem indicates the need for factory service, GE Sensing will issue a RETURN AUTHORIZATION NUMBER (RAN), and shipping instructions for the return of the instrument to a service center will be provided.

2. If GE Sensing instructs you to send your instrument to a service center, it must be shipped prepaid to the authorized repair station indicated in the shipping instructions.

3. Upon receipt, GE Sensing will evaluate the instrument to determine the cause of the malfunction.

Then, one of the following courses of action will then be taken:

• If the damage is covered under the terms of the warranty, the instrument will be repaired at no cost to the owner and

returned.

• If GE Sensing determines that the damage is not covered under the terms of the warranty, or if the warranty has

expired, an estimate for the cost of the repairs at standard rates will be provided. Upon receipt of the owner’s approval to proceed, the instrument will be repaired and returned.

DigitalFlow™ GS868 Startup Guide 5

Warranty

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6 DigitalFlow™ GS868 Startup Guide

Measurement & Control

Certification &

Safety Statements

GE Infrastructure Products Used in Hazardous Locations

Installation and operation manuals in their complete forms, along with product specific certification and safety statement sheets are included on the CD provided with the product documentation shipped with each instrument. Please read and follow all provided manufacturer’s instructions prior to installation and the application of power to your equipment. Always observe the following:

• Field wiring shall be rated at least 10°C above rated ambient.

• Connecting cables shall be mounted securely and protected from mechanical damage, pulling and

twisting.

• Cable entry thread types are identified on the equipment label.

• Cable glands of an approved flameproof design are required for Ex d rated equipment. These must be

installed according to the manufacturer’s instructions. Where the cable glands are provided by GE, the manufacturer’s instructions, as supplied to GE, will be included in the documentation.

• Unused cable entries must be sealed using a suitably certified threaded plug.

• Modifications to any flameproof enclosure are not permitted.

• The apparatus must be de-energized before opening, servicing and conducting any routine maintenance.

• Installation shall be in accordance with the installation instructions and the National Electrical Code

ANSI/NFPA 70, the Canadian Electrical Code C22.1, or IEC/EN 60079-14, as applicable.

• The product contains no exposed parts which produce surface temperature infrared, electromagnetic

ionizing, or non-electrical dangers.

• The product must not be subjected to mechanical or thermal stresses in excess of those permitted in the

certification documentation and the instruction manual.

• The product cannot be repaired by the user. It must be replaced by an equivalent certified product.

Repairs should only be carried out by the manufacturer or by an approved repairer.

• Only trained, competent personnel may install, operate and maintain the equipment.

• The product is an electrical apparatus and must be installed in the hazardous area in accordance with the

requirements of the EC Type Examination Certificate. The installation must be carried out in accordance with all the appropriate international, national and local standard codes and practices and site regulations for flameproof apparatus and in accordance with the instructions contained in the manual. Access to the circuitry must not be made during operation.

1100 Technology Park Drive, Billerica, MA 01821, U.S.A.

Telephone: 978-437-1000 or 800-833-9438

Sensing House, Shannon Free Zone East, Shannon, County Clare, Ireland

Telephone: +353 61 470200

CSS-0013, Rev. A

August 2014

Certification & Safety Statements for GE Infrastructure Products Used in Hazardous Locations August 2014

Special Conditions for Safe Use

1 Consult the manufacturer if dimensional information on any flameproof joint is necessary.

2 Follow the manufacturer’s instructions to reduce the potential of an electrostatic charging hazard.

3 Consult the manufacturer for genuine replacement flange fasteners. M10x35 hexagon socket cap screws

of ISO 12.9 DIN912 grade steel (zinc-plated) or better with a minimum yield strength of 135,000 psi are acceptable alternatives.

4 The sensor body temperature code rating is dependent on the process temperature. It is assumed that

the external surface of the sensor body will be, at worse case, equal to the process temperature (up to 140°C). In all cases, the electronics assembly will be marked T6 as it will be locally mounted for process temperatures up to 85°C and will be remotely mounted for process temperatures exceeding 85°C.

Markings

Markings appear on the instrument label which identifies the product model, serial number, operating ranges, hazardous area ratings, entry thread type, and warning and caution information.

EU / EEA Installation Compliance

The use of this apparatus is subject to the EU directive on minimum requirements for improving the safety and health protection of workers potentially at risk from explosive atmospheres, Council Directive 1999/92/EC. The installer is required to be familiar with this document or the National transposing legislation.

Increased Safety Wiring Connections

Power Connection:

Maximum Size‡:Solid - 4.0 mm2 (12 AWG)

(14 AWG)

(18 AWG)

Number of conductors†:

Stranded – 2.5 mm

2 Solid – max 1.5mm2 (16 AWG)

2 Stranded – max 1.0 mm

All Other Screw Terminal Connections:

Maximum Size‡:Solid - 4.0 mm2 (12 AWG)

(14 AWG)

(18 AWG)

Number of conductors†:

Stranded – 2.5 mm

2 Solid – max 1.5mm2 (16 AWG)

2 Stranded – max 1.0 mm

‡‐Single conductor † - Multi-conductors of same cross-section

CSS-0013, Rev. A 2 of 2

Sensing

We, GE Sensing

1100 Technology Park Drive

Billerica, MA 01821

USA

declare under our sole responsibility that the

DigitalFlow™ DF8688 Liquid Ultrasonic Flowmeter

DigitalFlow™ GC868 Clamp-On Gas Ultrasonic Flowmeter

DigitalFlow™ GF868 Flare Gas Mass Ultrasonic Flowmeter

DigitalFlow™ GM868 General-Purpose Gas Ultrasonic Flowmeter

DigitalFlow™ GS868 Steam Mass Ultrasonic Flowmeter

to which this declaration relates, are in conformity with the following standards:

EC DECLARATION

CONFORMITY

DOC-0013, Rev. C

• EN 60079-0: 2009

• EN 60079-1: 2007

• EN60529: 1991 + A1: 2000

• II 2 G Ex d IIB+H2 T6 Gb Ta = 20°C to 60°C; IP66; FM12ATEX0040X (FM Approvals Ltd, Windsor, Berkshire, UK - NoBo 1725)

• EN 61326-1: 2006, Class A, Table 2, Industrial Locations

• EN 61326-2-3: 2006

• EN 61010-1: 2012, Overvoltage Category II

following the provisions of the 2004/108/EC EMC, 2006/95/EC Low Voltage and 94/9/EC ATEX Directives.

The unit listed above and any ancillary equipment supplied with it do not bear CE marking for the Pressure Equipment Directive, as they are supplied in accordance with Article 3, Section 3 (sound engineering practices and codes of good workmanship) of the Pressure Equipment Directive 97/23/EC for DN<25.

Billerica - February 12, 2015

Issued Mr. Gary Kozinski

Certification & Standards, Lead Engineer

Customer Support Centers

U.S.A.

The Boston Center 1100 Technology Park Drive Billerica, MA 01821 U.S.A . Tel: 800 833 9438 (toll-free)

978 437 1000

E-mail: sensing@ge.com

Ireland

Sensing House Shannon Free Zone East Shannon, County Clare Ireland Tel: +353 (0)61 470200 E-mail: gesensingsnnservices@ge.com

910-190U Rev. E1

An ISO 9001:2008 Certified Company

www.gemeasurement.com/en/about-us/quality.html

www.gemeasurement.com

Technical content subject to change without notice.

GE Sensing GS868 Start-up Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Chapter 1. Installation

1.1 Introduction

1.1.1 Unpacking

1.2 Site Considerations

1.2.1 Electronics Console Location

1.2.2 Flowcell Location

1.2.3 Transducer Location

1.2.4 Cable Lengths

1.2.5 Temperature and Pressure Transmitters

1.2.6 Transducer Cables

1.3 Installing a Flowcell

Figure 1: A Typical Model GS868 System

1.4 Installing Temperature and Pressure Transmitters

Figure 2: Typical Temperature/Pressure Transmitter Mounting

1.5 Mounting the GS868 Electronic Console

1.6 Making the Electrical Connections

1.6.1 Wiring the Line Power

Figure 3: Wiring the Line Power

1.6.2 Wiring the Transducers

1.6.3 Wiring the 0/4-20 mA Analog Outputs

1.6.4 Wiring the Serial Port

1.6.4a Wiring the RS232 Interface

Table 1: RS232 Connection to DCE or DTE Device

1.6.4b Wiring the RS485 Interface

Figure 4: Typical RS485 Connections

1.6.4c Wiring the Ethernet Interface

Table 2: RS232 to Ethernet Interconnections

1.6.4d Wiring the MODBUS/TCP Interface

1.6.5 Wiring the Foundation Fieldbus Network

Figure 5: Network Connections - Standard Option Interior

1.6.6 Wiring an Alarms Option Card

Figure 6: Conventional and Fail-Safe Operation

1.6.7 Wiring a 0/4-20 mA Analog Inputs Option Card

Figure 7: Analog Input Wiring Diagram

1.6.8 Wiring a Totalizer/Frequency Outputs Option Card

Figure 8: Totalizer/Frequency Outputs Wiring

1.6.9 Wiring an RTD Inputs Option Card

1.6.10 Wiring a 0/4-20 mA Analog Outputs Option Card

Chapter 2. Initial Setup

2.1 Introduction

2.2 Navigating Through the User Program

2.3 Accessing the User Program

2.4 Activating a Channel

2.4.1 1-Channel Meter

2.4.2 2-Channel Meter

2.4.3 1 and 2-Channel Meters

2.5 Entering System Data for a Channel

2.5.1 A 1-Channel Meter

Table 3: Available Pressure Units

2.5.2 A 2-Channel Meter

2.5.3 1 and 2-Channel Meters

Table 4: Available Volumetric/Totalizer Units

Table 5: Available Mass Flow Units

2.6 Entering Pipe Data

2.6.1 Transducer Number

2.6.2 Pipe OD

Table 6: Available Pipe OD Units

2.6.3 Pipe Wall

2.6.4 Path Length

2.6.5 Axial Length

2.6.6 Fluid Type

2.6.7 Reynolds Correction

2.6.8 Calibration Factor

Chapter 3. Operation

3.1 Introduction

3.2 Powering Up

Figure 13: A Typical Measurement Display

3.3 Using the Display

Figure 14: Display Screen Components

3.4 Taking Measurements

Table 7: Channel Display Options

Table 8: Measurement Parameter Options

3.4.1 Foundation Fieldbus Communications

Table 9: Available Measurements Using a Foundation Fieldbus Device

Chapter 4. Specifications

4.1 General