GE Sensing Aurora H2O Operating Manual

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Oil & Gas Moisture

Aurora H2O

User’s Manual

ATTENTION!

This manual is intended for units with S/N 3999

(software v.001.A through v.001.U) or lower only.

[For units with S/N above 3999, use manual 910-317.]

910-284 Rev. J

April 2017

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Page 3

Oil & Gas

Aurora H2O

Moisture Analyzer for Natural Gas

User’s Manual

910-284 Rev. J April 2017

ATTENTION!

This manual is intended for units with S/N 3999

(software v.001.A through v.001U) or lower only.

[For units with S/N above 3999, use manual 910-317.]

www.gemeasurement.com

Technical content subject to change without notice.

Page 4

[no content intended for this page]

Page 5

Preface

Product Registration

Thank you for purchasing a model Aurora H2O from GE. Please register your product at

www.gemeasurement.com/productregistration

product information and special promotions.

for product support such as the latest software/firmware upgrades,

Services

GE provides customers with an experienced staff of customer support personnel ready to respond to technical inquiries, as well as other remote and on-site support needs. To complement our broad portfolio of industry-leading solutions, we offer several types of flexible and scalable support services including: Training, Product Repairs, Service Agreements and more. Please visit www.gemeasurement.com/services

for more details.

Typographical Conventions

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 that emphasizes instructions that are essential to proper setup of

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

CAUTION! This symbol indicates a risk of potential minor personal injury and/or severe damage to the equipment, unless these instructions are followed carefully.

WARNING! This symbol indicates a risk of potential serious personal injury, unless these instructions are followed 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.

Attention European Customers! To meet CE Mark requirements for all units intended for use in the EU, all electrical cables must be installed as described in this manual.

Aurora H2O User’s Manual iii

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Preface

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 this equipment.

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.

iv Aurora H2O User’s Manual

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Preface

Environmental Compliance

RoHS

The Aurora H2O fully complies with RoHS regulations.

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 of 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.

Please visit http://www.gemeasurement.com/environmental-health-safety-ehs information about this initiative.

for take-back instructions and more

Aurora H2O User’s Manual v

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Preface

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vi Aurora H2O User’s Manual

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Contents

Product Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii

Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii

Typographical Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii

Safety Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii

Auxiliary Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

Environmental Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Chapter 1. Features and Capabilities

1.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.3 Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.4.1 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

1.4.2 Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.4.3 Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.4.4 Response Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

1.4.5 Operating Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.4.6 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

1.4.7 Flow Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

1.4.8 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

1.4.9 Inputs/Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

1.4.10 Enclosure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

1.4.11 Laser Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

1.4.12 User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

1.4.13 Weight and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

1.4.14 Hazardous Area Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

1.4.15 European Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

1.4.16 Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

1.4.17 Sampling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

1.4.18 Wetted Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Chapter 2. Installation

2.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

2.2 Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

2.3 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

2.4 Choosing A Site for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

2.5 Low Voltage Directive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

2.6 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

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2.7 Optional Insertion Probe/Regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

2.7.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

2.7.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.7.3 Setting the Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

2.8 Making Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

2.9 Specific Conditions of Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Chapter 3. Operation and General Programming

3.1 Using the Aurora H2O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

3.2 Sample System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.2.1 Aurora H2O Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.2.2 Aurora H2O Shut Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

3.2.3 Aurora H2O Purge Gas Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

3.3 Keypad Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

3.3.1 Indicator Lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

3.3.2 The Magnetic Stylus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.3.3 The Default Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

3.3.4 Unlocking the Keypad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

3.3.5 Keypad Lock-Out Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

3.3.6 Accessing the Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

3.3.7 Entering Numeric Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

3.3.8 Starting Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

3.4 Setting Up the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

3.4.1 Selecting Primary Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

3.4.2 Selecting Alt 1 and Alt 2 Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

3.4.3 Setting Decimal Places. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

3.4.4 Data/Scan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

3.4.5 Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

3.4.6 Reverse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

3.5 Setting Up the Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

3.5.1 Selecting an Output for Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

3.5.2 Selecting Output Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

3.5.3 Selecting an Output Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

3.5.4 Changing the Upper Output Span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

3.5.5 Changing the Lower Output Span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

3.5.6 NAMUR Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

3.5.7 Testing the Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

3.5.8 Trimming the Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

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3.6 Setting Up the Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

3.6.1 Selecting an Alarm Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

3.6.2 Selecting Alarm Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

3.6.3 Selecting Alarm Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

3.6.4 Selecting an Alarm Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

3.6.5 How the Alarm Types Work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

3.6.6 Changing the Upper Alarm Span. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

3.6.7 Changing the Lower Alarm Span. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

Chapter 4. Programming Advanced Features

4.1 Comm Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

4.1.1 Selecting a Comm Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

4.1.2 Setting the Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

4.1.3 Setting Parity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

4.1.4 Selecting Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

4.1.5 Setting the Network ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

4.2 Adjust Offset Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

4.2.1 Adjusting the PPMv Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

4.2.2 Adjusting the Smoothing Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

4.2.3 Adjusting the Scan Averaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

4.2.4 Setting the Dew Point Calculation Method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

4.3 Set Up the Background Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

4.3.1 Selecting the Type of Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

4.3.2 Setting the Z Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

4.3.3 Entering a Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

4.3.4 Adjusting the Gas Offset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

4.4 Clock Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

4.4.1 Resetting the Hour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

4.4.2 Resetting the Minutes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

4.4.3 Resetting the Month . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

4.4.4 Resetting the Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

4.4.5 Resetting the Year . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

4.5 Pressure Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

4.5.1 Setting Pressure Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

4.5.2 Setting the Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

4.5.3 Changing the Constant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

4.5.4 Editing Pressure Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

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4.6 Regional Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

4.6.1 Setting the Country Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

4.6.2 Setting the Decimal Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

4.6.3 Setting the Date Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

4.6.4 Setting the Unit System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

4.7 User Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

4.8 Service Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

4.9 Aurora H2O Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

4.9.1 Checking the ID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

4.9.2 Checking the System Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

4.9.3 Checking the Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

4.9.4 Checking the Gas Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

4.9.5 Checking the Alternate Gas Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

4.10 Locking/Unlocking the Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Chapter 5. AuroraView Interface Software

5.1 Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

5.2 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

5.3 Installing AuroraView. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

5.4 Starting AuroraView . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

5.5 Using the Main Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

5.6 Datalogging with AuroraView . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

5.7 Working with Trend Plots, Trend Tabular Data and Scan Plots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Chapter 6. Maintenance

6.1 Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99

6.2 Cleaning the Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99

6.2.1 Instructions for Optical Absorption Cell Style 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

6.2.2 Instructions for Optical Absorption Cell Style 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

6.3 Replacing the Filter Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Chapter 7. Troubleshooting

7.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

7.2 Blank Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

7.3 Display Dim or Hard to Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

7.4 Status Messages and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

7.5 No Flow Measurement Indicated on Aurora H2O Measurement Cell Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

7.6 Verifying Aurora H2O Performance in the Field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

7.6.1 Using A Portable Hygrometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

7.6.2 Using a Moisture Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

7.7 Background Selection Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

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Appendix A. MODBUS RTU/RS485 Communications

A.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

A.2 Modbus Functions and Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

A.3 Modbus Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

A.4 Modbus System Status Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

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Chapter 1. Features and Capabilities

1.1 Overview

GE’s Aurora H2O Moisture Analyzer for Natural Gas makes it possible for natural gas processing and transportation facilities to monitor moisture content in real-time with high precision and reliability.

Aurora H2O analyzer uses tunable diode laser absorption spectroscopy (TDLAS) to measure moisture in natural

The gas at the speed of light. The analyzer is suitable for installation in hazardous areas and operates over a wide range of environmental conditions. compliance. Once process upsets are corrected and the gas dries out, the fast response quickly enables natural gas to be cleared for entry into the “energy grid”.

CLASS 1 LASER PRODUCT

WARNING! Use of controls or adjustments or the performance of procedures other than those

specified herein may result in hazardous laser exposure.

Aurora’s fast response quickly alerts and documents when moisture concentrations are out of

1.2 Features

Optical response: < 2 seconds after flow cell is purged.

•

• No cross sensitivity to glycols or amines.

• Direct readout in lbs/mmscf, mg/m

or ppm.

• Reads process pressure dew point (with user programmable constant or live auxiliary input for process

pressure).

• Turnkey sampling system specifically designed for natural gas applications ensures measurement integrity.

• Magnetic Stylus enables through-glass programming – hot permit not required to field program.

• Explosion-proof/Flameproof design

• 4-20 mA signals and RS-232/485 MODBUS RTU for connection to SCADA or plant monitoring system.

• Supplied with AuroraView software for remote configuration, data logging and data retrieval capacity.

• NIST traceable calibration.

• In conformance with IEC 60825-1 Edition 2.0, Safety of Laser Products.

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Chapter 1. Features and Capabilities

AIn

---





SLN==

1.3 Theory of Operation

The GE Aurora H2O (Tunable Diode Laser Absorption Spectroscopy) hygrometer for natural gas is a system designed to continuously monitor the moisture content in natural gas. It fundamentally measures the partial pressure of water vapor (water in the gas state), and with the simultaneous measurement of pressure and temperature, provides readings and both analog and digital signal transmission of user-selectable moisture parameters including dew point

temperature, volume ratio and absolute humidity (lbs/MMSCF or mg/m

Aurora H2O is supplied with an integrated sampling system which includes an optional pipe-mounted liquid

The separator and pressure reducing valve/regulator, and the following components mounted within a stainless steel enclosure: isolation valve, coalescing filter, coalescer flow control valve, sample cell control valve, second pressure reducing valve/regulator, and flow indicator (rotameter), as well as an optional electrical heater and thermostat.

The fundamental water vapor pressure measurement is based on the Beer-Lambert Law:

where: A = Absorbance

I = Light intensity transmitted through a sample gas

= Incident light intensity

S = Absorption coefficient*

L = Absorption path length (a constant) N = Concentration of the water vapor in the absorption cell

) in addition to temperature and pressure.

* The absorption coefficient is a constant for a specific gas composition at a given pressure and temperature.

The concentration of the water is directly related to the partial pressure. At certain specific frequencies, light energy will be absorbed by water molecules. As the concentration of water increases, the absorption also increases. The

H2O

sweeps the diode laser output across a narrow band in the near infrared spectrum and, by measuring the light

Aurora

intensity with a photo detector, is able to provide a direct indication of the partial pressure of water. The partial

pressure, multiplied by 10

and divided by the total pressure, yields the volume ratio in ppmv (parts per million by

volume).

The laser diode is housed in a hermetically sealed and dry housing. The light is transmitted through a window made of proprietary transparent material. The light travels through a stainless steel cell and is reflected off a gold-plated mirror and returned to a photo detector, where the light intensity is measured.

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Chapter 1. Features and Capabilities

Gas Inlet

Mirror

Stainless Steel Absorption Cell

Gas Outlet

Optical Window

Photodetector

Tunable Diode Laser

Hermetically Sealed Housing

1.3 Theory of Operation (cont.)

Since only light comes in contact with the sample of natural gas, and all of the wetted materials are made of non-corrosive and inert materials, this technology does not exhibit the drift associated with gas contacting sensor-based hygrometers. The diode laser emits low energy light, and therefore the system will not ignite the gas. The complete system is rated explosion-proof, and the Figure 1 below) is purged, the response time is a matter of a few seconds.

Aurora H2O provides very fast response time. Once the absorption cell (see

Figure 1: Laser Absorption Cell, Basic Elements

The control of the laser, power supply and signal conditioning circuitry are housed in an explosion-proof transmitter enclosure. A backlit, three-parameter, LCD display provides digital indication of user-programmable parameters. The

Aurora H2O has three user-programmable (4-20 mA) analog outputs and two programmable digital ports that may be

configured as either RS-485 or RS-232 with Modbus protocol. The analyzer has an auxiliary analog input (4-20 mA) input that is used for connection to an optional process pressure transmitter. Measurement of the process pressure enables the

Aurora H2O to display and transmit the process dew point. AuroraView software is provided and enables

remote readings, programming data logging and data logging with a personal computer.

Aurora H2O hygrometer is calibrated against an NIST (or other national metrological institute) traceable reference

The dew/point generator and hygrometer. Each system is supplied with a certificate of calibration with functional test data.

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Chapter 1. Features and Capabilities

1.3 System Components (cont.)

Note: Refer to Figure 2 below and Table 1 on page 6 to identify your Aurora components.

Figure 2: Aurora H2O System Assembly with Optional USA/CAN Heater

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Chapter 1. Features and Capabilities

1.3 System Components (cont.)

Note: Refer to Figure 3 below and Table 1 on page 6 to identify your Aurora components.

Figure 3: Aurora H2O System Assembly with Optional EU/ATEX Heater

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Chapter 1. Features and Capabilities

1.3 System Components (cont.)

Note: Refer to Tab l e 1 below and either Figure 2 on page 4 or Figure 3 on page 5 to identify your Aurora

components.

Table 1: Aurora H2O System Parts List

No. Description

1 Conduit I/O

2 Display and Magnetic Stylus Keypad

3 Wiring Terminals

4 Isolation Valve (needle valve)

5 Membrane Filter

6 Membrane Filter Drain & Fast Loop Vent

7 Pressure Regulator w/ 0-10 psig outlet pressure gauge

8 Magnetic Stylus

9 Process or Purge Gas Selector

10 Purge Gas Inlet Needle Valve

11 Absorption Cell

12 Temperature Sensor

13 Pressure Sensor

14 Rotameter

15 Optional Heater, thermostat, junction box

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Chapter 1. Features and Capabilities

Overall Length

(See Detail A)

3.42

(86.8)

0.92

2.25 (57.1)

5.60 (142.2)

1.20 - 1.75

(30.48 - 44.45)

Probe Length (See Detail A)

750-633

750-634 750-635

Probe Length

Overall Length

4.00"

7.00"

9.00"

11.80"

14.80"

16.80"

NOTES:

1. Sample Process Connection: 3/4" NPTM

3. Dimensions are in inches (millimeters).

3/4" NPTM

2. Sample Outlet Connection: 1/4" Compression Fittings

04 05

4.00"

7.00"

9.00"

11.80"

14.80"

16.80"

750-633 750-634 750-635

Probe/filter/regulator assembly Pressure Gauge, 0 to 600 psig

2-way ball valve

Tube fitting

Detail A

Part

Number

1.3 System Components (cont.)

IMPORTANT: The filter installed within the Aurora is designed to function as a secondary filter. A primary filter or

filter train should be used upstream of the analyzer. Do not sample directly from the process gas to the Aurora without the use of a primary filter and pressure reduction. The pressure inlet to the Aurora sample inlet should not exceed 500 psig.

For natural gas, a pipeline insertion membrane filter is recommended as shown in Figure 4 below. The installation of the insertion filter is described in this manual. The insertion filter also is equipped with a pressure regulator which

functions to reduce the pressure. If it is not possible to install the insertion filter, consult GE application engineers for information about a sample conditioning system.

Figure 4: Sample System (ref. dwg #733-737)

Aurora H2O User’s Manual 7

Page 22

Chapter 1. Features and Capabilities

THERMOSTAT

HEATER CONNECTION

CUSTOMER CABLE GLAND

BROWN

J1 16 AWG BROWN WIRE (2") STRIP 1/4"

BLUE

GREEN/YELLOW

LINE

NEUTRAL

GROUND

230 VAC 120 VAC

L1 L2 G

N G

CUSTOMER CABLE

CABLE TO THERMOSTAT

CABLE TO HEATER

CABLE FUNCTION

CONDUCTOR

COLOR

J-BOX TERMINAL

CUSTOMER POWER

LINE 1

BROWN

LINE 2

BLUE

GROUND

GREEN/YELLOW

THERMOSTAT

LINE 1

BROWN

LINE 2

BLUE

GROUND

GREEN/YELLOW

HEATER

LINE 1

BROWN

LINE 2

BLUE

GROUND

GREEN/YELLOW

1.3 System Components (cont.)

Figure 5: USA/CAN Heater Wiring Diagram

8 Aurora H2O User’s Manual

Figure 6: EU/ATEX Heater Wiring Diagram

Page 23

1.4 Specifications

1.4.1 Power

Analyzer:

100-240 VAC, 50-60Hz, 10W 18-32 VDC (24 VDC nominal), 10W

Optional Electrical Heater:

120VAC, 120W 230VAC, 75W

1.4.2 Range

Part Per Million by Volume

5 to 5000 ppm

Chapter 1. Features and Capabilities

Dew/Frost Point

–65.5°C to –2.6°C (–85.9°F to 27.3°F)

Process Dew/Frost Point

Process or equivalent dew point/frost point by calculation with process pressure signal (4-20 mA) or constant

Absolute Humidity

3.8 to 3803 mg/m3 (0.24 to 237 lbs/MMSCF)

*Readings below 0°C (32°F) are in “frost point” temperature, and above 0°C (32°F) are in “dew point” temperature.

1.4.3 Accuracy

Parts per Million by Volume

±2% of reading in ppmv or 4 ppmv (Accuracy of other parameters derived from ppm

)

1.4.4 Response Time

Optical Response

<2 seconds

System Response

The system response is dependent upon the length of sample tubing, sample system components, flowrate and pressure, as well as the change in moisture concentration.

1.4.5 Operating Pressure

Operating Sample Cell Pressure:

69 to 172 kPa (10 to 25 psia)

Maximum Pressure

1380 kPa (200 psi)

Process Pressure

10,342 kPa (1500 psig) maximum [Higher pressure available using additional sampling system components]

Aurora H2O User’s Manual 9

Page 24

Chapter 1. Features and Capabilities

1.4.6 Temperature

Operating

–20° to +65°C (–4° to 149°F)

Storage

–20° to +70°C (–4° to +158°C)

Optional Heater/Thermostat Setpoint

20°±5°C (68°±9°F) for U.S. and Canada 10°±5°C (50°±9°F) for EU and elsewhere

1.4.7 Flow Rate

Sample Cell Flowrate

10 to 60 SLH (0.4 to 2 SCFH); 30 SLH (1 SCFH) nominal

Coalescer By-pass Fast Loop

5 to 10X of flowrate through sample cell

1.4.8 Display

Backlit LCD, three programmable simultaneous parameters, alphanumeric status and diagnostic display, LEDs for power, laser temperature stability, keypad lockout

1.4.9 Inputs/Outputs

Analog Outputs

Three programmable 0/4-20 mA, 500 Ω maximum load

Analog Input

Loop-powered 4-20 mA input for remote pressure transmitter (Aurora H2O supplies 24 VDC)

Digital Interface

Two programmable digital communications ports RS-232 and RS-485 with multi-drop capability and assignable address, Modbus RTU protocol

1.4.10 Enclosure

Ingress Protection

IP-66

1.4.11 Laser Certification

Class 1 product, conforms to IEC 60825-1 Edition 2.0, Safety of Laser Products

WARNING! Use of controls or adjustments or the performance of procedures other than those

specified herein may result in hazardous laser exposure.

10 Aurora H2O User’s Manual

Page 25

Chapter 1. Features and Capabilities

1.4.12 User Interface

Programmable “through-the-glass” via magnetic stylus

1.4.13 Weight and Dimensions

Net Weight

45 kg (100 lb)

Overall Dimensions

34”H x 18”W x 14”D (87 cm x 46 cm x 36 cm) [see drawings]

1.4.14 Hazardous Area Certification

USA/Canada

Explosion-Proof for Class I, Division 1, Groups B, C&D Dust-Ignitionproof for Class II/III, Division 1, Groups E, F&G (Canada only)

EU and Elsewhere

ATEX and IECEx: Ex d e IIB+H2 T6 Gb IP66; Tamb = –20°C to +65°C. Flameproof with increased safety

compartment

Evaluated against standards EN 60079-0:2012, EN 60079-1:2007, EN 60079-7:2007, IEC 60079-0:2011, IEC 60079-1:2007, IEC 60079-7:2006.

1.4.15 European Certification

Complies with EMC Directive 2004/108/EC, Low Voltage Directive 2006/95/EC and Pressure Directive 97/23/EC for DN<25

1.4.16 Software

Displays all key parameters. Provides time-base graphing, data logging ability, export data as ASCII text. Software has lockout/passcode.

1.4.17 Sampling System

Integrated sampling system to filter out physical contaminants, remove glycol carry over, control temperature condition, regulate pressure and flow rate. Optional thermostatically controlled heater.

1.4.18 Wetted Components

316/316L stainless steel for tubing and fittings. Other wetted components such as the optical window and mirror are proprietary materials and are compatible with natural gas and typical contaminants found in natural gas. Other sample system components wetted parts include PTFE, PFA, Inconel, Hastelloy, PVDF, glass, Viton.

Aurora H2O User’s Manual 11

Page 26

Chapter 1. Features and Capabilities

[no content intended for this page]

12 Aurora H2O User’s Manual

Page 27

Chapter 2. Installation

2.1 Introduction

The Aurora H2O analyzer provides direct indication of moisture concentration in natural gas. Temperature and pressure sensors are used to provide high precision enhancement. It may be installed in a wide variety of environmental conditions, and meets the requirements for operation in hazardous areas.

Be sure that the ambient temperature is at least 10°C higher than the maximum dew/frost point temperature you expect to measure. This will ensure that you will not have liquid condensation in the sample transport line or the sampling system components. Heat tracing the sample line will aid in elevating the sample temperature above the dew point. An optional heater installed within the enclosure is also available.

2.2 Bill of Materials

The following items should have been received with your shipment:

• Aurora H2O Unit • Aurora H2O Calibration Data Sheet

•

Aurora H2O User’s Manual on CD ROM • Maintenance/Accessories Kit

•

AuroraView Software on CD ROM • Optional: Pipeline Insertion Filter/Regulator Assembly

Aurora H2O

2.3 Unpacking

The Aurora H2O is shipped in a packing box with a plywood base (see Figure 7 below), and the Aurora H2O analyzer is secured to the plywood base with mounting bolts. Transport the shipping package with the plywood base on the bottom, and according to the warning labels on the exterior packaging. Open the packing box from the top, and remove the foam packing material. Collect any separate components such as the other items contained in the shipment.

AuroraView CD, the User Manual CD, and

Figure 7: Unpacking the

Aurora H2O User’s Manual 13

Aurora H2O

Page 28

Chapter 2. Installation

2.3 Unpacking (cont.)

Remove the mounting studs at the bottom of the enclosure. Using two people, lift the Aurora H2O from the bottom of the enclosure and from the top of the enclosure where the analyzer electronics is located. A typical

Aurora H2O weighs

approximately 100 pounds (45 kg). Use a proper lifting technique to avoid injury.

Check all the received components and record the model numbers and serial numbers for your records. If anything is missing, contact GE immediately.

2.4 Choosing A Site for Installation

You should have discussed environmental and installation factors with a GE Sales, Application or Service Engineer by the time you receive the analyzer.

Before installing the analyzer, read the guidelines below on installation recommendations:

1. Choose an installation site for the

Aurora H2O analyzer as close to the actual sample point (sample take-off

point) as possible, to minimize transport time to the analyzer.

2. Avoid unnecessarily long lengths of sample transport tubing to minimize transport time to the analyzer.

3. Avoid dead-legs in the sample transport tubing to minimize the possibility of liquid build-up.

4. Use stainless steel tubing. Avoid using copper tubing, as the water molecule has greater absorption capabilities

for copper compared to stainless steel. Avoid rubber tubing at all costs, as water molecules interact with the rubber, and ambient moisture can permeate through the tube wall into the sample gas.

5. Mount the

Aurora H2O analyzer at grade, or at a location that is easily accessible for maintenance (on a

platform or other structure).

6. Be sure that the ambient temperature is at least 10°C higher than the maximum dew/frost point temperature you expect to measure. This will ensure that you will not have liquid condensation in the sample transport line nor in the

Aurora H2O. Heat tracing the sample line will aid in elevating the sample temperature above the dew

point. An optional heater installed within the enclosure is also available.

A typical

Aurora H2O system for monitoring moisture off a natural gas pipeline is shown in Figure 8 on page 15.

14 Aurora H2O User’s Manual

Page 29

2.4 Choosing A Site for Installation (cont.)

Input/Output

Power

Conduit or Armored Cable

suitable for area rating

Sample Transport Line

Minimize distance.

Tie to Vent/Flare

(Do not restrict.)

Install at a 12 o'clock, or

optionally 3 o'clock or

9 o'clock position, on a

horizontal pipe run.

Note: There is no

orientation preference

on vertical pipe runs.

Optional

Insertion Regulate

Sample Tap

Power Conduit

entering 1 of 3 inlets.

Input/Output Conduit

entering 2nd of 3 inlets.

Chapter 2. Installation

Figure 8: Aurora H2O Analyzer Monitoring Moisture Off a Natural Gas Pipeline

Aurora H2O User’s Manual 15

Page 30

Chapter 2. Installation

2.5 Low Voltage Directive

To comply with the Low Voltage Directive, you must install a switch or circuit breaker on the input power line. For greatest safety, locate the circuit breaker or power switch near the electronics console.

IMPORTANT: Installation must be done in accordance with the National Electrical Code, the Canadian Electric Code,

and/or any other applicable local codes.

2.6 Mounting

Use the four mounting tabs to mount the Aurora H2O System Assembly in the desired location (see Figure 31 on page 31).

IMPORTANT: The

Aurora H2O should only be mounted vertically.

16 Aurora H2O User’s Manual

Page 31

Chapter 2. Installation

2.7 Optional Insertion Probe/Regulator

2.7.1 Description

For natural gas applications that may have entrained particulate and liquid contaminants (especially TEG carry-over from TEG dryers), GE recommends the use of a Insertion Probe/Regulator (see Figure 9 below) to serve as the first part of particulate and condensate filtration where the gas is sampled off the pipe. The device combines the features of a sample tap, a membrane filter and an integral pressure regulator (0-500psig outlet), adjustable at the sample take-off point. The sample tap housing includes a foot-valve so that, once installed, the assembly can be removed from a line under pressure for membrane filter replacement as needed.

Figure 9: Insertion Probe/Regulator

Note: A 29/32” (0.907 inch, 23.1 mm) minimum bore-through clearance is needed on the customer nozzle for

insertion of a 3/4” NPT insertion membrane liquid separator/pressure regulator.

2.7.2 Installation

Note that the Optional Insertion Probe/Regulator can be installed only on unpressurized lines. There is no hot-tap installation for this device.

This procedure is broken down into two steps:

• Installing the Housing

• Installing the Insertion Probe/Regulator Assembly

Aurora H2O User’s Manual 17

Page 32

Chapter 2. Installation

Slots

Locking

Mechanism

Foot Valve

Vertical

Set Screws

Horizontal

Set Screw

Horizontal

Set Screw

Locking Mechanism

Thread Sealant

2.7.2a Installing the Housing

The housing, as shown in Figure 10 below, is supplied with a Locking Mechanism to ensure that housing can only be removed intentionally.

Figure 10: Installing the Housing and Locking Mechanism

1. Turn the locking mechanism counter-clockwise until it is at its extreme upper position. Apply thread sealant to the threaded area below vertical slots in the threads (see Figure 11 below). Do not allow the thread sealant to enter the slot, as it may interfere with the mechanism.

Figure 11: Applying Thread Sealant

18 Aurora H2O User’s Manual

Page 33

Chapter 2. Installation

¾” NPTF Thread-O-Let

Housing

Wrench

Flats

180° apart

2.7.2a Installing the Housing (cont.)

2. Confirm that the pipeline has been unpressurized. Refer to Figure 12 below and insert the housing into the

pipeline through a ¾” NPTF thread-o-let (The minimum ID of the thread-o-let is 0.91”).

Figure 12: Inserting Housing into Pipeline

3. Using a wrench on the wrench flats, turn the housing until it is secure and sealed (see Figure 13 below). This

will require between three and five turns.

DO NOT OVERTIGHTEN! The housing may be damaged if it is

over-tightened, causing the housing to deform.

Figure 13: Tightening the Housing

Aurora H2O User’s Manual 19

Page 34

Chapter 2. Installation

2.7.2a Installing the Housing (cont.)

4. Turn the locking mechanism clockwise until it first touches the top of the thread-o-let.

5. Turn the locking mechanism counterclockwise until the Allen screw is aligned with the thread slot (see

Figure 14 below). Using a 1/8” Allen wrench, tighten the Allen screw until its tip is tight against the slot.

NOT OVERTIGHTEN THE ALLEN SCREW

as this will cause the housing wall to be indented.

Figure 14: Aligning and Tightening the Allen Screw

6. Using a 3/32” Allen wrench, tighten the Allen screws on the locking mechanism's surface until their tips are firmly set into the thread-o-let’s upper surface (see Figure 15 below).

Figure 15: Tightening the Allen Screws

The housing is now installed. The locking mechanism should prevent the housing from becoming unintentionally unscrewed from the thread-o-let. The pipeline my now be pressurized.

20 Aurora H2O User’s Manual

Page 35

Chapter 2. Installation

Allen Cap Screw

Pressure Adjustment Screw

Pressure Gauge

Isolation Ball Valve

2.7.2b Installing the Insertion Membrane Liquid Separator/Pressure Regulator Assembly

1. Confirm that the Allen cap screw head’s hex cavity is clean and free from foreign material. Confirm that the

Allen cap screw that holds the membrane ferrule is torque-wrench tight (see Figure 16 below). The torque value should be 10 inch-lbs. If the Allen cap screw is only hand-tight, the screw may protrude excessively, which could result in foot valve actuation when the probe is installed into the housing.

Figure 16: Checking/Tightening the Allen Cap Screw

2. Rotate the pressure adjustment screw on the pressure regulator fully counterclockwise until it rotates freely.

Close the isolation ball valve (see Figure 17 below).

Aurora H2O User’s Manual 21

Figure 17: Rotating the Pressure Adjustment Screw

Page 36

Chapter 2. Installation

Membrane

Housing

Slot

Membrane Spring

Guard

Insertion

Nut

Insertion

Washer

Housing

Vertical

First

Second Vertical

Slot

Insertion

Nut

Insertion

Washer

Housing

2.7.2b Installing the Insertion Membrane Liquid Separator/Pressure Regulator Assembly (cont.)

3. Refer to Figure 18 below and position the membrane end of the probe above the installed housing. Slowly lower the probe into the housing. Avoid membrane contact with the upper section of the housing. DO NOT APPLY DOWNWARD FORCE. The probe should slide easily into the housing. Lower the probe only enough to thread the insertion nut one complete turn of thread engagement.

Figure 18: Installing the Probe

4. Thread the insertion nut down by hand, lowering the probe until the insertion washer pins slide to the bottom of the first vertical slot (see Figure 19 below).

Note: The threaded nut on the housing ensures that if all other safety procedures are disregarded, it is mechanically

impossible to remove the probe.

22 Aurora H2O User’s Manual

Figure 19: Threading the Insertion Nut

Page 37

Chapter 2. Installation

2.7.2b Installing the Insertion Membrane Liquid Separator/Pressure Regulator Assembly (cont.)

5. Rotate the probe counterclockwise until the pins are to the far right in the horizontal slot. At this point, the

probe is sealed against the housing interior wall. The pins will be in the middle of the second vertical slot (see Figure 20 below).

Figure 20: Rotating the Probe

6. Loosen the insertion nut until it is above the top of the second vertical slot (see Figure 21 below). The probe

should not rise to the top of the second vertical slot. If the probe rises in the slot, the foot valve o-ring may have been damaged or attacked by the process.

Note: The threaded nut on the housing ensures that if all other safety procedures are disregarded, it is mechanically

impossible to remove the probe. Perform the next step regardless of the status of the foot valve o-ring.

Figure 21: Loosening the Insertion Nut

Aurora H2O User’s Manual 23

Page 38

Chapter 2. Installation

2.7.2b Installing the Insertion Membrane Liquid Separator/Pressure Regulator Assembly (cont.)

7. Tighten the insertion nut by hand until it is against the insertion washer again. Using a wrench, tighten the insertion nut against the insertion washer so that the pins are at the bottom the second vertical slot (see Figure 22 below). At this point the foot valve opens and the insertion process is complete.

Figure 22: Tightening the Insertion Nut

24 Aurora H2O User’s Manual

Page 39

2.7.3 Setting the Pressure

Pressure Adjustment Screw

Lock

Nut

Pressure

Gauge

Note: Perform these steps only after the entire system has been plumbed, including the Aurora H2O.

Chapter 2. Installation

1. Ensure the inlet sample gas isolation valve on the

Aurora H2O sample system is closed. Open the isolation ball

valve at the Optional Pipeline Insertion Membrane Liquid Separator/Pressure Regulator.

2. Turn the pressure adjustment screw clockwise to increase the pressure (see Figure 23 below). The optional

pipeline insertion membrane liquid separator/pressure regulator is the FIRST STAGE pressure reduction of the system when used. Depending upon your source pressure, you should step down the pressure to a value in the range listed in Ta bl e 2 below.

3. Tighten the lock nut down to the top of the pressure regulator to avoid future possible changes in pressure

regulator setting, once the pressure is set.

Table 2: Pressure Settings

Source Pressure Outlet Pressure Setting

750 psig < source < 1500 psig 400-500 psig

500 psig < source < 750 psig 300 psig

< 500 psig 50% of the average source pressure

Figure 23: Turning the Pressure Adjustment Screw

Aurora H2O User’s Manual 25

Page 40

Chapter 2. Installation

2.8 Making Electrical Connections

Refer to Figure 32 on page 32 for wiring connections.

Aurora H2O has three ¾” NPT conduit inlet ports for power and I/O (see Figure 24 below). These will

normally be shipped plugged from the factory. Follow the applicable wiring code and requirements for wiring the unit.

Figure 24: Conduit Inlet Ports

Note: Use one conduit inlet for power. Use the two other conduit inlets for input/output as needed. All unused conduit

inlet ports should be sealed with suitable blanking elements.

2. Select one conduit for inlet power to the

Aurora H2O based on your configuration. The Aurora H2O comes with

a universal power supply, or optionally, as a 24VDC powered unit. Remove the wiring cover to view the wiring terminal block (see Figure 25 below).

Figure 25: Wiring Terminal Blocks

26 Aurora H2O User’s Manual

Page 41

Chapter 2. Installation

2.8 Making Electrical Connections (cont.)

Note: Supply connection wiring shall be rated at least 10°C above the rate maximum service temperature of 85°C, be

stripped back 5/16 in. (8 mm) and torqued to a minimum of 4.4 in. lb. (0.5 Nm).

3. Run the AC power connections to the Power Terminal Block shown in Figure 26 below. It is recommended to

use 12-18 AWG (3.3 - 0.82 mm

) power wiring.

Figure 26: Power Terminal Block

4. Use wiring conduit runs, separate from the

three 4-20mA outputs to the terminals labeled A, B, and C. The three analog outputs A, B and C (0-20mA or

4-20mA) are internally powered by the wire, and ground the shield at one end only. Wire up digital communications to Port 1 and/or Port 2 as labeled.

5. Either digital port may be configured for RS-232 or RS-485. Port 1 is designated as “SCADA.” Port 2 is

designated as “SERVICE.” For operation on RS-485, 2-wire, half-duplex bus, attach the RS-485(+) to (+), and the RS-485(–) to (–). Per Modbus-IDA specifications, a third, common conductor must also interconnect all the devices of the bus. Attach the common conductor to RTN.

Note: For an RS-485 Multi-drop Network, a terminating resistor must be installed across the

terminals, or an internal terminating resistor can be applied. See below.

Aurora H2O main power, for all I/O (Input/Output) leads. Wire up to

Aurora H2O. Use shielded 18-22 AWG (0.82–0.33 mm

Aurora H2O RS-485

) twisted pair

• When using the Aurora H2O in RS-485 mode, and to prevent signal reflections on the high-speed RS-485

connections, it is recommended that the far end of the RS-485 lines be terminated properly. The termination can be accomplished in one of two ways:

• Connect 120 Ω, 1/4 W leaded resistors across the + and – terminals of ports 1 and 2 (both ports or

whichever one will be in use)

• Using long-nose pliers, move jumpers J15 and J16 from pins 2 and 3 (default setting from factory) to pins

1 and 2 (see Figure 27 on page 28). J16 is the termination for port 1 and J15 is the termination for port 2. It is also recommended that basic ESD precautions such as grounded wrist straps be used for this procedure.

Aurora H2O User’s Manual 27

Page 42

Chapter 2. Installation

J16

123

J15

2.8 Making Electrical Connections (cont.)

Multi-drop RS-485:

For multiple Aurora H2O units connected in daisy-chain fashion to the RS485 interface, it is important that the farthest unit away from the transmitting device be the only unit incorporating any termination (see Figure 27 below). All other units must have jumpers J15 and J16 in positions 2 & 3 (default setting from the factory). For more details on RS-485 wiring or operation, refer to TIA/EIA-485-A Specification.

Figure 27: RS-485 Mode Termination - Install Jumpers at J15 and J16, Pins 1 and 2

Note: The internal terminations MUST be in the default (unterminated) position for operation in RS-232 mode.

• For operation on RS-232, connect RS-232(TXD) to (+), RS-232(RXD) to (–), and RS-232(GND) to RTN (see

Figure 28 below).

Figure 28: Input/Output Connections

28 Aurora H2O User’s Manual

Page 43

Chapter 2. Installation

2.8 Making Electrical Connections (cont.)

6. For connection to a PC to interface with AuroraView software, you may use the supplied 704-688 cable

(RS-232 w/ SUB-D-9 connector to tinned leads). Wire the cable as follows:

Color Code Aurora H2O Terminal

White Tx +

Red Rx –

Green Ground RTN

The as-shipped default configuration is as follows:

BAUD Rate: 115,200

Parity: Even

Network ID: 1 for Port 1, 2 for Port 2

7. Use a separate wiring conduit run for any 4-20mA pressure transmitter input. This input is used when a live

input pressure reading for the main process pressure is desired, to determine an equivalent dew point by the

Aurora H2O analyzer. Wire the 4-20mA pressure transmitter to the Pressure Transmitter terminal block (see

Figure 29 below). The

Aurora H2O supplies 24VDC for use with a loop-powered, 2-wire pressure transmitter.

Figure 29: Pressure Transmitter Connections

IMPORTANT: Use of an external pressure transmitter is not covered by the

Aurora H2O hazardous area certifications.

The external pressure transmitter should be suitably rated for the area classification. Its associated wiring should be done in accordance with local codes and regulations, and suitably rated for the area classification.

8. If the

Aurora H2O has been supplied with an optional electrical heater, there are two possible configurations:

USA/CAN or EU. Connect the AC power using a separate conduit from the power for the

Aurora H2O

analyzer. The heater is equipped with a thermostat preset to 25°C (77°F) nominal. Use 12-18 AWG (3.3 - 0.82

) wires. The heater terminals are located within a junction box (item 15 in Figure 2 on page 4 or Figure 3

on page 5).

Aurora H2O User’s Manual 29

Page 44

Chapter 2. Installation

2.8 Making Electrical Connections (cont.)

9. Lastly, the Aurora H2O analyzer requires a connection to ground from the electronics explosion-proof/flame-proof enclosure. As shown in Figure 30 below, there are two external ground connections available for the user (on the left and right hand sides of the enclosure). Wire this connection to earth ground, local to the

Aurora H2O analyzer installation site.

Figure 30: Earth Ground Connection

2.9 Specific Conditions of Use

Before operating your Aurora system, be sure the following conditions are met:

• In the event of repair or replacement of any components, the manufacturer, GE Infrastructure Sensing, shall be

contacted for information on the controlled materials and dimensions of the flameproof characteristics of the Aurora H2O Moisture Analyzer.

• The laser head assembly of the Aurora H2O Moisture Analyzer shall be inside a tool secured enclosure with

IP20 or better to ensure the factory installed laser head assembly bolts are inaccessible from the outside.

• Consult the manufacturer for genuine replacement flange fasteners. 5/16 inch-24 x 1-1/4 inch 18-8 stainless

steel socket head cap bolts or better with a minimum tensile strength of 70,000 psi are acceptable alternatives.

• To reduce the potential of an electrostatic charging hazard, do not rub painted aluminum parts with a dry cloth.

30 Aurora H2O User’s Manual

Page 45

33.12

26.16

24.26

.95

15.66

1.62210.92

18.31

10.24

13.08 .125

9.29 TYP 3.18 TYP

24.91

Chapter 2. Installation

Aurora H2O User’s Manual 31

Figure 31: Aurora H2O Outline and Mounting (ref. dwg #712-1456)

Page 46

CUSTOMER GROUND

AC OPTION SHOWN DC WIRING + – SEE NOTE 2

GROUND BAR

I/O CONNECTIONS SEE NOTE 1

SEE NOTE 1

NOTES:

I/O CONNECTIONS AND PRESSURE TRANSMITTER WIRE GAUGE RANGE 12-24 AWG.

AC AND DC CONNECTION WIRE GAUGE RANGE 12-18 AWG.

[OUTPUT]

4-20mA

A B C PORT 1 PORT 2

RS-485

+ 2 4 V

+ –+ –+ –+ – + –

L1 L2/N G

50-60Hz 0.5A

100-240 VAC

Chapter 2. Installation

Figure 32: Aurora H2O Electronic Assembly Wiring Diagram (ref. dwg #702-8976)

Aurora H2O User’s Manual 32

Page 47

Chapter 3. Operation and General Programming

3.1 Using the Aurora H2O

Follow the information in this chapter to operate the Aurora H2O system.

CLASS 1 LASER PRODUCT

WARNING! Use of controls or adjustments or performance of procedures other than those specified

herein may result in hazardous laser exposure.

3.2 Sample System

See the instructions below and Figure 33 on page 35 to operate the Aurora H2O sample system.

3.2.1 Aurora H2O Startup

1. Supply gas inlet pressure should be <400 psig (2760 kPa).

2. Confirm that there are no flow restrictions downstream of the analyzer sample outlet.

a. Maximum outlet back pressure: 10 psig

3. Start with all valves in fully closed position and the pressure regulator turned fully counter-clockwise.

4. Turn the sample gas selector valve [1] with the handle indicator pointing fully to the right.

5. Open the bypass gas metering valve [2] 1/4 turn.

6. Fully open the sample gas metering valve [3].

7. Slowly open the supply gas isolation valve [4] 1/4 turn.

8. Slowly turn the supply gas pressure regulator [6] clockwise until the sample gas flow meter [7] indicates

mid-scale.

a. If the pressure is increased to rapidly, it will activate the liquid-block feature of the membrane filter [8]

shutting off gas flow.

b. If this occurs, fully close the Supply gas isolation valve [4].

c. Wait 30 seconds, and then go back to Step 7. (A pop sound can be heard when the liquid-block re-opens to

allow gas flow)

9. Slowly adjust the bypass gas needle valve [2] until the desired flow rate is reached (requires optional flow meter for precise metering).

10. Fully open the Supply gas isolation needle valve [4].

Aurora H2O User’s Manual 33

Page 48

Chapter 3. Operation and General Programming

3.2.2 Aurora H2O Shut Down

1. Fully close the supply gas isolation valve [4].

2. Turn the supply gas pressure regulator [6] fully counter-clockwise.

3. Fully close the bypass and sample gas metering valves [2 & 3].

3.2.3 Aurora H2O Purge Gas Connection

1. Start with all valves in closed position and the pressure regulator turned fully counter-clockwise.

2. Confirm that there are no flow restrictions downstream of the analyzer sample outlet.

a. Maximum outlet back pressure: 10 psig

3. Turn the sample gas selector valve [1] with the handle indicator pointing fully to the left.

4. Connect the regulated and filtered gas supply.

a. Regulated pressure range: 0-10 psig.

b. Outlet filter size: 7 micron

c. Initial pressure setting: 0 psig (minimum)

5. Fully open the sample gas metering valve [3].

6. Increase the regulated pressure until the sample gas flow meter [7] indicates mid-scale.

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3.2 Sample System (cont.)

INLET ISOLATION

NEEDLE VALVE

PRESSURE

REGULATOR

BYPASS

NEEDLE VALVE

SAMPLE/PURGE

3-WAY BALL VALVE

PURGE INLET NEEDLE VALVE

Chapter 3. Operation and General Programming

Aurora H2O User’s Manual 35

Figure 33: Aurora H2O Sample System (ref. dwg #902-004)

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Chapter 3. Operation and General Programming

3.3 Keypad Features

Menu Power Indicator

Fault Indicator Laser Indicator

Information

Indicator

Cancel

Main Display

Keypad Lock Indicator

Enter

Up, Left, Right,

Down Arrows

The Aurora H2O has seven keys: a Menu key, four Arrow keys, a Cancel key, and an Enter key.

• Use the Menu key to open the main menu on the display.

• Use the Arrow keys to navigate among menu choices and to increment/decrement numeric entries.

• Use the Cancel key to cancel a numeric entry change, or exit a menu.

• Use the Enter key to accept a numeric entry or select a menu option.

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Chapter 3. Operation and General Programming

3.3.1 Indicator Lights

If the Fault Indicator is lit, an instrument fault is detected. A message will be displayed in the Main Display, top/right.

Information Indicator is lit, the instrument is still operating, but a message will appear in the Main Display

If the top/right, with information about the instrument.

Keypad Lock Indicator will be lit if either: A) the Keypad Lock-Out Switch, internal to the instrument, has been

The engaged, or B) the instrument keypad has not been used for a period of several minutes, engaging a software feature to lock-out inadvertent key usage. Type (B) keypad lock-out is overcome by pressing Cancel, Enter, Cancel in sequence.

Laser Indicator is lit, the laser is powered and operating normally. This indicator will be off if there is a

If the laser-specific fault. This indicator will also be off for a brief period when the instrument is first powered. After initial power-up, this indicator may blink several times as the laser temperature is stabilized. The laser indicator will be lit constantly in normal operation.

Power Indicator is normally lit when the instrument is powered on.

The

3.3.2 The Magnetic Stylus

Each of the keys can be selected using a hand-held magnet called a Magnetic Stylus (see Figure 35 below), which is included with the meter. By touching the clear window at a key location, that key will be selected and will flash a red light to verify the contact.

Figure 35: Magnetic Stylus

3.3.3 The Default Display

Figure 36 below shows the default display of the Aurora H2O window.

Primary

Figure 36: Default Display

Alt 1

Aurora H2O User’s Manual 37

Alt 2

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Chapter 3. Operation and General Programming

Keypad Lock Indicator

Keypad

Lock-Out Switch

3.3.4 Unlocking the Keypad

After power-on, the Aurora H2O keypad is locked as indicated by the symbol , lit up with a red backlight. It is necessary to enter the keypad unlock sequence to make any changes to the

Aurora H2O.

Similar to a mobile phone, the

Aurora H2O will prompt the operator to unlock if any key is pressed. A passcode is

required to use certain factory service features only.

To unlock the keypad, press

Cancel , Enter , Cancel in sequence.

3.3.5 Keypad Lock-Out Switch

Figure 37: Keypad Lock-Out Switch Location

Note: If the Keypad Lock-Out Switch is in the “down” position, the keypad is locked out and the RED LED on the

Keypad Lock Indicator is on all the time.

WARNING! Do not open or remove the cover with the power on, unless the area is non-hazardous.

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Chapter 3. Operation and General Programming

3.3.6 Accessing the Menus

After successfully unlocking the keypad, press the Menu key. The Aurora H2O will display the Main Menu (see Figure 38 below). Use the arrow keys to highlight the menu item desired. Refer to Menu Map, Figure 45 on page 75.

Enter to select the highlighted item. Many menu items will display another menu. Use Cancel to return to

Press

the previous menu page. Pressing

Note: Menu items displayed with an ellipsis (shown as a series of three dots after the menu item) will bring up more

choices, while those without take immediate action.

Cancel from the Main Menu will return the screen to the Measurement Display.

Figure 38: Main Menu

3.3.7 Entering Numeric Values

Since the Aurora H2O has no numeric keypad, numeric values are entered using a “combination lock” style of entry:

Use the

Note: If incrementing or decrementing a digit would cause the numeric value to exceed its allowable range

Press value intact.

left and right arrow keys to select the digit to change. The digit selected will be indicated with a .

up and down arrow keys to increment or decrement the digit.

(maximum/minimum value), the digit will not change.

Enter to save the new value and return (see Figure 39 below), or Cancel to return, leaving the original

Figure 39: Numeric Entry

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Chapter 3. Operation and General Programming

3.3.8 Starting Up

After proper installation, the Aurora H2O Transmitter can be set up to accommodate the user’s requirements. Typically, the user may need to configure the analog outputs, trim the analog outputs, and program the digital outputs. Refer to the Menu Map, Figure 45 on page 75, and complete the following steps. Upon startup, the several displays until a screen similar to the following appears:

After startup, the screen will need to be unlocked. To unlock the screen, select

Cancel, Enter, Cancel

Note: In most instances; use the Enter key to save an entry and/or move ahead to the following screen; use the Cancel

key to reject an entry and/or return to the previous screen.

Aurora H2O proceeds through

3.4 Setting Up the Display

When the screen is unlocked, touch the Menu key and the Main Menu appears with several options. To set up the display, select Display... and press screen appears:

Enter. The following

3.4.1 Selecting Primary Units

To select units for the primary display, select Primary and press Enter. The following screen appears:

Use the arrow keys to highlight the desired units and press the Display Menu.

Enter. The screen returns to

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3.4.2 Selecting Alt 1 and Alt 2 Units

To set the units for Alt 1 and/or Alt 2, use the arrow keys to highlight the one to be set, and press

Use the arrow keys to highlight the desired unit type (Hygro, Temperature or Pressure) and press

Enter. The following screen appears:

Enter. If Temp is selected, the following screen appears.

Chapter 3. Operation and General Programming

Use the arrow keys to highlight the desired unit and press

the Display Menu. Use the same procedure to change other units.

3.4.3 Setting Decimal Places

To set the decimal places for unit values, from the Display Menu use the arrow keys to highlight Decimal and press

The decimal places setting determines the number of digits displayed for the value to the right

Use the arrow keys to change the number of decimal places and press

Cancel if no changes are necessary. The screen returns to the Display Menu.

3.4.4 Data/Scan

To toggle the display between showing the numeric values (data), and a graphic plot of the 2f waveform (scan), from the Display Menu use the arrow keys to highlight Data/Scan and press

Enter. The screen returns to

Enter. Then select the type of display and press Enter.

of the decimal symbol (“.”), if possible.

Enter, or press

Enter. A screen similar to the following appears.

Note:The scan can be used for diagnostic purposes when a PC with

AuroraView is not

readily available.

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Chapter 3. Operation and General Programming

Data/Scan

3.4.5 Adjust

Note: The display brightness is not adjustable in the current Aurora design; the brightness adjustment is not

available.

To modify the display contrast and brightness, from the Display Menu use the arrow keys to highlight Adjust and press

Enter. The following screen appears.

Use the Up/Down arrow keys to increase/decrease display brightness. Use the Right/Left arrow keys to increase/decrease display contrast. Press

changes, or press

Cancel to return to the previous setup. The screen returns to the

Enter to save the

Display Menu.

3.4.6 Reverse

To reverse the text and background shades, from the Display Menu use the arrow keys to highlight Reverse and press

Enter. The following screen appears.

To return to the previous shade setup, select Reverse and press screen appears.

3.5 Setting Up the Outputs

3.5.1 Selecting an Output for Setup

To set up outputs, from the Main Menu choose Outputs... and press Enter. The following screen appears.

From the Output Menu choose Select and press

Use the arrow keys to select the output (A, B or C) to be set up, and press

Enter. The previous

Enter. The following screen appears.

Enter.

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3.5.2 Selecting Output Units

From the Output Menu, select Units and press Enter. Use the arrow keys to select the unit type and press

Chapter 3. Operation and General Programming

Enter. A screen similar to the following appears:

Use the arrow keys to select a new unit. Press previous value), and return to the Output Menu.

3.5.3 Selecting an Output Type

To change the output type, from the Output Menu select Type and press Enter. A screen similar to the following appears:

Use the arrow keys to select a new output type. Press Enter to save (or Cancel to keep the previous value), and return to the Output Menu.

Note: If the

ALM option is selected in the above menu, the analog output will function as an alarm indicator. In this

mode, the analog output will remain at 0 mA during normal operating conditions, but the analog output will be driven to 24 mA whenever there is an alarm condition.

Enter to save (or Cancel to keep the

3.5.4 Changing the Upper Output Span

To adjust the upper output span, from the Output Menu select Upper and press Enter. A screen similar to the following appears.

Use the left and right arrow keys to select each digit to be changed and the up and down arrow keys to increase or decrease its value. Press previous value), and return to Output Menu.

Aurora H2O User’s Manual 43

Enter to save (or Cancel to keep the

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Chapter 3. Operation and General Programming

Error InformaƟon

Measurement InformaƟon

Error InformaƟon

0 mA

3.6

3.8

4.0 20.0

20.5

21.0

24 mA

3.5.5 Changing the Lower Output Span

To adjust the lower output span, from the Output Menu select Lower and press Enter. A screen similar to the following appears.

Use the left and right arrow keys to select each digit to be changed and the up and down arrow keys to increase or decrease its value. Press Enter to save (or Cancel to keep the previous value), and return to Output Menu.

3.5.6 NAMUR Response

The Aurora H2O can report measurement failure information via the analog outputs. The signal presentation of failure information is consistent with by the recommendations established by the “User Association of Automation Technology in Process Industries” (NAMUR) published in NE43, version 03.03.2003. When configured for 4-20mA operation, faults and errors are indicated by specific output levels shown in Figure 40 below:

Figure 40: NAMUR Output Value Ranges

In normal operation, a valid measurement is indicated with a signal between 3.8 and 20.5 mA. The Lower (Zero) and Upper (Span) settings determine the measurement value assigned to 4.0 and 20.0 mA, respectively.

For the measurement assigned to an output, the

Aurora H2O continuously checks if an error has occurred. If an error has

occurred, the output will be driven to a current which is within the Error Information bands displayed above. The

Aurora H2O can signal 3.5 mA ('NAMUR Low') or 21.1 mA ('NAMUR High'). These values are well within the Error

Information bands as specified by NAMUR (see Ta bl e 3 below).

Note: The Aurora H2O will never produce a signal between 3.6-3.8 mA or between 20.5-21.0 mA, to allow for

reliable discrimination between a measurement and an error.

Table 3: Signal Messages

Error Description Signal

Under Range The measurement is less than the calibrated range of the analyzer NAMUR Low

Over Range The measurement is greater than the calibrated range of the analyzer NAMUR High

Out of Range Calculation error or associated measurement (Temp/Pressure) invalid NAMUR High

No Data Measurement value has not been calculated yet NAMUR High

No Calibration Moisture calibration table empty/invalid NAMUR High

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Chapter 3. Operation and General Programming

3.5.6a NAMUR Filtering

There may be situations where the NAMUR signaling behavior is undesirable (see Table 4 below). For example, a process operating at or near the cannot correctly distinguish between a measurement and an error signal. In these cases, the NAMUR reporting behavior can be suppressed (“inhibited”). From the Output menu, select NAMUR:

Selection Result

NONE No errors are inhibited; NAMUR signaling will occur for any error as shown in the table above.

LoRng Under Range errors are inhibited; NAMUR signaling will NOT occur for Under Range error conditions.

NAMUR signaling will occur for all other errors in the table above.

Aurora H2O calibration limits, or when connected to a SCADA or DCS system that

Then select the error(s) to inhibit:

Table 4: NAMUR Errors

HiRng Over Range errors are inhibited; NAMUR signaling will NOT occur for Over Range error conditions.

NAMUR signaling will occur for all other errors in the table above.

Lo+Hi Under Range AND Over Range errors are inhibited; NAMUR signaling will NOT occur for these error

conditions. NAMUR signaling will occur for all other errors in the table above.

ALL ALL errors are inhibited; NAMUR signaling will NOT occur for any error in the table above.

3.5.7 Testing the Output

The Test Menu causes the Aurora H2O to generate a 0- or 4-20mA output at the percent of scale selected. For example, in 4-20 operation, 0% = 4mA, 50% = 12mA, 100% = 20mA. This allows the proper function of recording or SCADA equipment to be verified. In 0-20 operation, 0% = 0mA, 50% = 10mA, 100% = 20mA.

To test system output, from the Output Menu select Test and press

H2O

will proceed to check the settings, and a screen similar to this display will appear.

Use the left and right arrow keys to select each digit to be changed, and the up and down arrow keys to increase or decrease its value. Press

Enter to save (or Cancel to keep) the

previous value, and return to the Output Menu.

Check your output wiring. If the reading on your SCADA or DCS is off slightly, then you may use the Trim feature to trim the output zero or span.

Enter. The Aurora

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Chapter 3. Operation and General Programming

3.5.8 Trimming the Outputs

The Trim Menu enables the operator to compensate for differences in measurement of the 0/4-20 mA outputs by connected recorders or SCADA equipment. To trim the output:

Select Trim from the Output Menu and press

Enter. The following screen appears.

Note: The trim applies to whichever output is chosen with the Select menu item, and displayed on the menu title bar.

Use the left and right arrow keys to select an output (A, B or C) and press

Enter. The

screen returns to the previous display.

When performing a Trim operation, the trim. To reset the trim output, highlight Reset Trim and press

Aurora H2O unit requires you to first reset the

Enter. The following

screen appears.

Use the left or right arrow keys to highlight YES and press previous trim values, and returns the

Aurora H2O to its factory adjustment. The display

Enter. This cancels any

returns to the previous screen with Trim Zero highlighted.

To trim the zero value, press

This will cause the

Aurora H2O to output 4.000 mA on the output being trimmed. The

Enter. A screen similar to the following appears.

output value should then be read using the connected recorder, SCADA equipment, or DVM. Enter the value read from the connected equipment as the Zero Trim value, as follows:

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Chapter 3. Operation and General Programming

3.5.8 Trimming the Outputs (cont.)

Note: Since you cannot trim 0 mA for negative offsets, trim for the lower end of the scale is at the 4 mA output level.

Use the left and right arrow keys to select each digit to be changed, and the up and down arrow keys to increase or decrease its value. Press previous value).

The Trim Menu returns with Trim Span highlighted. To change the span value, press

Enter. A screen similar to the following appears.

Enter to save (or Cancel to keep the

This will cause the

Aurora H2O to output 20.000 mA on the output being trimmed. The

output value should then be read using the connected recorder, SCADA equipment, or DVM. Enter the value read from the connected equipment as the Span Trim value.

Use the left and right arrow keys to select each digit to be changed, and the up and down arrow keys to increase or decrease its value. Press

Enter to save (or Cancel to keep the

previous value).

Trimming is complete. Accuracy can be verified using the Test Menu, above.

Example: Trim is reset, then Trim Zero is selected. The SCADA input reports 3.977 mA.

The operator enters “3.977” as the Zero Trim value. Trim Span is selected. The SCADA input reports 19.985 mA. The operator enters “19.985” as the Span Trim value.

Aurora H2O adjusts the output accordingly to true the output as read by the customer recorder, SCADA or DVM.

Using the Test Menu, the operator verifies that a test value of 0% now reads 4.000 mA at the SCADA equipment, and a test value of 100% now reads 20.000 mA.

3.6 Setting Up the Alarms

Note: The Aurora H2O is not equipped with alarm relays. The Alarm function is useful only when reading the alarm

status via Modbus.

3.6.1 Selecting an Alarm Output

To set up alarm outputs, on the Main Menu choose Alarm and press Enter. From the Alarm Menu choose Select and press

Use the arrow keys to select the output (A, B or C) to be set up and press display returns to the Alarm Menu.

Aurora H2O User’s Manual 47

Enter. A screen similar to the following appears.

Enter. The

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Chapter 3. Operation and General Programming

3.6.2 Selecting Alarm Status

To select the alarm status, from the Alarm Menu select Status and press Enter. The following screen appears:

Use the arrow keys to select OFF or ON and press Alarm Menu.

3.6.3 Selecting Alarm Units

To select alarm units, from the Alarm Menu select Units and press Enter. Use the arrow keys to select the unit type and press

If Hygro was selected, this display appears. Use the arrow keys to select a unit. Press

Enter to save (or Cancel to keep the previous value), and return to the Alarm Menu.

If Temperature was selected, this display appears. Use the arrow keys to select a unit. Press Menu.

Enter. The display returns to the

Enter.

Enter to save (or Cancel to keep the previous value), and return to the Alarm

If Pressure was selected, this display appears. Use the arrow keys to select a unit. Press

Enter to save (or Cancel to keep the previous value), and return to the Alarm Menu.

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3.6.4 Selecting an Alarm Type

Out Band

Trip

In Band

Reset

Upper

Hysteresis

Lower

Setpoint

Trip

Reset

Trip

Reset

Trip

Reset

To change the alarm type, from the Alarm Menu select Type and press Enter. A screen similar to the following appears:

Chapter 3. Operation and General Programming

Use the arrow keys to select an alarm type. Press previous value), and return to the Alarm Menu.

Enter to save (or Cancel to keep the

• Setpoint: Alarm activates when parameter exceeds upper limit, and deactivates when parameter is less than

lower limit.

• In Band: Alarm activates when parameter is between upper and lower limits.

• Out Band: Alarm activates when parameter is outside upper and lower limits.

• Fault: Alarm activates when a system fault is detected. The alarm de-activates when the fault condition is

removed. These conditions can be found in Section 7.4, Table 4.

3.6.5 How the Alarm Types Work

See Figure 41 below for descriptions of the various alarm types:

Figure 41: Example of Alarm Types

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Chapter 3. Operation and General Programming

3.6.6 Changing the Upper Alarm Span

To adjust the upper alarm span, from the Alarm Menu select Upper and press Enter. A screen similar to the following appears.

3.6.7 Changing the Lower Alarm Span

To adjust the lower alarm span, from the Alarm Menu select Lower and press Enter. A screen similar to the following appears.

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Chapter 4. Programming Advanced Features

4.1 Comm Port Settings

To access the communication port settings, from the Main Menu select Settings and

Enter. The following screen appears:

press

To access the communications port settings, select Comms... and press following screen appears:

4.1.1 Selecting a Comm Port

There are two physical comm ports in the Aurora H2O. Comm Port 1 is aligned to SCADA in the instrument program and Comm Port 2 is aligned to SERVICE. This setup enables the user to have Comm Port 1 set up for the primary digital output (for example, RS-485 to the customer SCADA system), and Comm Port 2 to be used for service (for example, to enable a service engineer to interface with the cable connected to a laptop PC in the field, running

To select a communication port, use the arrow keys to highlight Select and press

Select SCADA or SERVICE and press

Enter. The screen returns to the Comm Port Menu.

Enter. The

Aurora H2O using an RS-232

AuroraView software).

Enter. The following screen appears.

4.1.2 Setting the Baud Rate

To set the baud rate, from the Comm Port Menu select Baud Rate and press Enter. The following screen appears.

Use the arrow keys to highlight the desired baud rate and press returns to the Comm Port Menu.

Aurora H2O User’s Manual 51

Enter. The screen

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Chapter 4. Programming Advanced Features

4.1.3 Setting Parity

To set parity, from the Comm Port Menu select Parity and press Enter. The following screen appears.

4.1.4 Selecting Protocol

Use the arrow keys to highlight the desired parity and press

Enter.

After a parity selection is made, the Aurora prompts for the number of stop bits. Use the arrow keys to highlight the desired number and press

Enter. The screen returns to the

Comm Port Menu.

To choose the protocol, from the Comm Port Menu select Protocol and press Enter. The following screen appears.

Use the arrow keys to highlight the desired protocol and press

Enter. The screen returns

to the Comm Port Menu.

4.1.5 Setting the Network ID

To set the network ID, from the Comm Port Menu select Network ID and press Enter. The following screen appears.

Use the left and right arrow keys to select each digit to be changed. Use the up and down arrow keys to change the value. When finished, press Enter. The screen returns to the Comm Port Menu.

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4.2 Adjust Offset Values

To adjust offset values, from the Settings Menu select Adjust... and press Enter. The following screen appears.

4.2.1 Adjusting the PPMv Offset

To adjust the PPMv offset, select PPM Level and press Enter. The following screen appears.

Use the left and right arrow keys to select each digit to be changed. Use the up and down arrow keys to change the value. When finished, press Enter. The screen returns to the User Adjustments Menu.

Chapter 4. Programming Advanced Features

4.2.2 Adjusting the Smoothing Filter

To adjust the smoothing filter, from the User Adjustments Menu select Filter and press

Enter. The following screen appears.

The smoothing filter setting is used to change the system responsiveness. It is a moving average filter to smooth the moisture readings. 1 sample = 1 scan. The minimum setting is 10 samples, or ~ 0.6 seconds. The maximum setting is 500 samples, or ~ 31 seconds. The default value of 40 samples, as set at the factory, is ~2.5 seconds.

Use the left and right arrow keys to select each digit to be changed. Use the up and

down arrow keys to change the value. When finished, press the User Adjustments Menu.

Enter. The screen returns to

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Chapter 4. Programming Advanced Features

4.2.3 Adjusting the Scan Averaging

To adjust the Scan Averaging, from the User Adjustments Menu select Scan Avg and

Enter. The following screen appears:

press

The Scan Average setting is used to change system noise rejection. By averaging entire scans, the Signal/Noise Ratio (SNR) can be increased. This is particularly useful in the presence of certain background gases, which can interfere with the moisture absorption peak, or introduce background noise.

The Scan Average value is set at the factory to a value which is an optimal tradeoff between noise reduction and system responsiveness, typically between 45-75 scans. Lowering this value provides faster response time in exchange for a noisier measurement; conversely, increasing the scan average provides a smoother measurement in exchange for slower transient response.

Please contact a GE application engineer before modifying this setting.

Use the left and right arrow keys to select each digit to be changed. Use the up and down arrow keys to change the value. When finished, press

Enter. The screen returns to the User Adjustments Menu.

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Chapter 4. Programming Advanced Features

4.2.4 Setting the Dew Point Calculation Method

• The dew point is the temperature at which the air is saturated with respect to water vapor over a liquid surface.

• The frost point is the temperature at which the air is saturated with respect to water vapor over an ice surface.

There can be a difference of several degrees C between the dew point and the frost point.

• When set for Dew/Frost, the Aurora H2O will report the Dew Point if the reading is above freezing, and will

report the Frost Point if the reading is below freezing.

• When set for Dew Point, the Aurora H2O will calculate the Dew Point temperature, even if that temperature is

below freezing.

To set the dew point calculation method, from the User Adjustments Menu select Dew Pt Calc and press

Enter. The following screen appears.

Use the arrow keys to highlight the desired dew point setting and press screen returns to the User Adjustments Menu.

Enter. The

• The Dew calculation should be used for compatibility with ASTM-1142/IGT-8. The tables and calculations in

those reports require measurements and provide results in dew point, regardless of the actual phase (dew or frost).

• The Dew/Frost calculation should be used for compatibility with ISO-18453:2004, or when using a chilled

mirror apparatus as a check standard.

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Chapter 4. Programming Advanced Features

4.3 Set Up the Background Gas

4.3.1 Selecting the Type of Gas

The Aurora H2O TDLAS is normally calibrated to a standard gas mixture that is representative of “typical” natural gas. The primary components and concentrations of this gas mixture are:

Component Concentration

Methane (CH4) 90.0%

Nitrogen (N

Carbon Dioxide (CO

The process background gas is selectable from the Settings Menu.

)6.0%

)4.0%

• For normal operation in natural gas service, STD should be selected as the background gas.

• For verification testing in pure methane, select CH4.

• If verifying in Nitrogen with a known moisture concentration, N2 should be selected as the background gas.

Unless otherwise requested, the

Aurora H2O displays the selected Background Gas an indicator in the upper right

The corner of the LCD, adjacent to the status message.

Aurora H2O is shipped from the factory configured for Methane operation.

To change the type of background gas, from the Settings Menu select Gas and press

Enter. The following screen appears.

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4.3.1 Selecting the Type of Gas (cont.)

Label

Background Gas Mol. Wt. Z Factor

N2 STD CH4 CO

Gas2

From the Gas Data menu, select Background and press Enter. The following screen appears.

Chapter 4. Programming Advanced Features

Use the arrow keys to select the desired background gas, and press background gas selection is now complete. Press

Cancel to return to the display page.

Enter. The

Note:Selecting either Gas1 or Gas2 enables the Label menu item. This menu opens a

keyboard display that allows the user to change the 'Gas1/2' label to one of their own choosing. Entering the Label menu requires the User passcode (2719).

4.3.2 Setting the Z Factor

The Z factor is a number that accounts for the non-ideal compressibility of natural gas, and is vital for accurate

calculation of mass/volume (lbs/MMSCF, mg/m

To set the

Z factor, from the Gas Data Menu, select Z Factor and press enter. The

following screen appears.

Use the left and right arrow keys to select each digit to be changed. Use the up and down arrow keys to change the value. When finished, press Enter. The screen returns to the Settings Menu.

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Chapter 4. Programming Advanced Features

Upper/Lower Case Select Highlighted)

Context Menu (Prompts)

Preview

Text Edit

“Keyboard”

4.3.3 Entering a Label

Selecting either Gas1 or Gas2 enables the Label menu item. This menu opens a keyboard display that allows the user to change the ‘Gas1/2’ label to one of their own choosing. Entering the Label menu requires the User passcode (2719).

To enter/edit a label:

Selecting the Label menu item displays the Alphanumeric Entry control (see Figure 42 below).

Figure 42: Alphanumeric Entry Control

The alpha menu is divided into three sections. The active section will have something highlighted (reverse video). The

Up/Down arrows are used to move between sections.

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Chapter 4. Programming Advanced Features

Highlighted

Character

Highlighted

Underlined

Character

4.3.3 Entering a Label (cont.)

The top section is the Context Menu. The ‘Aa’ toggles the keyboard between upper and lower case (shift key). Cancel abandons any changes to the label. label will look from the main data display.

Save saves any changes made to the label. There is also a ‘preview’ of how the

• Pressing the Down arrow will move the highlight to the Text Edit section (see Figure 43 below):

Figure 43: Text Edit

Note that the

Context Menu has changed; it displays prompts of available key actions.

• In Text Edit, the Left and Right arrows move the highlight from character to character in the label. Pressing x

erases the highlighted character.

• Pressing the Down arrow will move the highlight to the Keyboard section (see Figure 44 below):

Figure 44: Alphanumeric Menu with Keyboard Highlighted

Note that the

Keyboard, the Left / Right / Up / Down arrows move the highlight from character to character in the keyboard.

Aurora H2O User’s Manual 59

Context Menu has changed again; it displays prompts of available key actions when in the keyboard. In

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Chapter 4. Programming Advanced Features

4.3.3 Entering a Label (cont.)

Note that the character selected in Text Edit is now underlined.

• Pressing Enter replaces the underlined character with the character highlighted on the keyboard.

• Pressing Cancel erases the underlined character. Any characters after the erased character are shifted to the left.

If there are no characters after the erased character, the underline moves to the last character in the label.

• When in the Keyboard, pressing the Down arrow repeatedly will move the highlight down to the next row of

‘keys’. When the highlight is on the bottom row, pressing

Down will move the highlight to the top row.

• Pressing the Up arrow will move the highlight up to the previous row of keys. When the highlight is on the top

row, pressing

Up will switch to the Text Edit section.

• From the Text Edit section, pressing Up will move the highlight to the Context Menu section.

• Choose Cancel or Save to exit the Label entry.

4.3.4 Adjusting the Gas Offset

The input information for gas molecular weight is not currently used for any moisture calculations and is reserved for future use.

• lbs/MMSCF is calculated using IGT Research Bulletin #8 and ASTM D-1142-95

referenced at 60°F, 1 ATM.

• mg/cm

To adjust the gas molecular weight offset, from the Settings Menu select Gas and press menu select Mol. Weight and press

is based on ideal gas law derivation referenced at 15°C, 1.01325 kPa.

Enter. The following screen appears.

Use the left and right arrow keys to select each digit to be changed. Use the up and down arrow keys to change the value. When finished, press the Settings Menu.

Enter. From the Gas Data

Enter. The screen returns to

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4.4 Clock Settings

Chapter 4. Programming Advanced Features

The clock settings are for informational purposes. They are used to keep track of the test analyzer start time and the laser operational time.

To reset the clock, from the Settings Menu select Clock and press screen appears.

4.4.1 Resetting the Hour

To reset the hour, from the Clock Menu select Hour and press Enter. The following screen appears.

Use the left and right arrow keys to select each digit to be changed. Use the up and down arrow keys to change the value. When finished, press Enter. The screen returns to the Clock Menu.

4.4.2 Resetting the Minutes

To reset the minutes, from the Clock Menu select Minutes and press Enter. The following screen appears.

Enter. The following

Use the left and right arrow keys to select each digit to be changed. Use the up and down arrow keys to change the value. When finished, press Enter. The screen returns to the Clock Menu.

4.4.3 Resetting the Month

To reset the month, from the Clock Menu select Month and press Enter. The following screen appears.

Use the left and right arrow keys to select each digit to be changed. Use the up and down arrow keys to change the value. When finished, press Enter. The screen returns to the Clock Menu.

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Chapter 4. Programming Advanced Features

4.4.4 Resetting the Date

To reset the date, from the Clock Menu select Date and press Enter. The following screen appears.

Use the left and right arrow keys to select each digit to be changed. Use the up and down arrow keys to change the value. When finished, press Enter. The screen returns to the Clock Menu.

4.4.5 Resetting the Year

To reset the year, from the Clock Menu select Year and press Enter. The following screen appears.

Use the left and right arrow keys to select each digit to be changed. Use the up and down arrow keys to change the value. When finished, press Enter. The screen returns to the Clock Menu.

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4.5 Pressure Settings

To reset the pressure settings, from the Settings Menu, select Pressure... and press

Enter. The following screen appears.

4.5.1 Setting Pressure Units

To set the pressure units, from the Pressure Menu, select Units and press Enter. You can then choose from: kPa(a) (Kilopascals Absolute), Bar g- (Bars gauge), or PSI g(Pounds per Square Inch gauge).

4.5.2 Setting the Source

To reset the source, from the Pressure Menu, select Source and press Enter. The following screen appears.

Chapter 4. Programming Advanced Features

Use the left and right arrow keys to select the line pressure source. pressure value from a pressure transmitter and connection. To set a constant value, select Constant and press to the Pressure Menu.

4.5.3 Changing the Constant

If the pressure source selected is Constant, to reset its value, select Constant from the Pressure Menu and press

Use the left and right arrow keys to select each digit to be changed. Use the up and down arrow keys to change the value. When finished, press the Pressure Menu.

Note: Data entry for this setting is only in kPa.

Live accepts a

Remote accepts a value via a Modbus

Enter. The screen returns

Enter. The following screen appears.

Enter. The screen returns to

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Chapter 4. Programming Advanced Features

4.5.4 Editing Pressure Calibration

Pressure input in this section is used only for equivalent dew point calculations. Equivalent dew point is the dew point of the process gas at the process pressure. Input a “constant” value if the line pressure is at a normal pressure, or use an external pressure transmitter to input a “live” pressure input into the

To edit the pressure calibration, from the Line Pressure Source Menu, select Live and

Enter. The following screen appears.

press

Aurora H2O analyzer.

To edit the Calibration Data, use the arrow keys to select Cal Data and press

Enter. The

following screen appears.

To select the Calibration Point, use the up and down arrow keys to highlight Select Cal Point and press Enter. The following screen appears.

Use the left and right arrow keys to select Zero or Span and press

Enter. The screen

returns to the previous menu.

To edit the Pressure Value, use the up and down arrow keys to select Edit Pressure Value and press Enter. The following screen appears.

Use the left and right arrow keys to select each digit to be changed. Use the up and down arrow keys to change the value. When finished, press

Enter. The screen returns to the

previous menu.

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Chapter 4. Programming Advanced Features

4.5.4 Editing Pressure Calibration (cont.)

To edit the Input Value, use the up and down arrow keys to select Edit Input Value and

Enter. The following screen appears.

press

Use the left and right arrow keys to select each digit to be changed. Use the up and down arrow keys to change the value. When finished, press previous menu.

Enter. The screen returns to the

4.6 Regional Settings

This section enables the setting of regional information, depending on the location of the Aurora H2O.

To reset the regional settings, from the Settings Menu, select Locale... and press The following screen appears.

Note: Locale settings for your order have been set at the factory and are access code

need to access Regional Settings, contact the factory for assistance.

4.6.1 Setting the Country Code

To edit the country code, from the Regional Settings Menu select Country Code and

Enter. The following screen appears. A passcode is required to make changes.

press

Use the left and right arrow keys to select each digit to be changed. Use the up and down arrow keys to change the value. When finished, press the Regional Settings Menu.

• Country Codes = international telephone country codes.

Enter.

protected. If you determine a

Enter. The screen returns to

• Default = 1 for U.S.

• Option = 81 for Japan is available to conform to METI requirements.

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Chapter 4. Programming Advanced Features

4.6.2 Setting the Decimal Format

The Decimal Format option determines whether a decimal [.] or a comma [,] is used as the decimal separator. To edit the decimal format, from the Regional Settings Menu select Decimal Format and press

Use the left and right arrow keys to select a decimal [.] or a comma [,] as the decimal separator and press

4.6.3 Setting the Date Format

To edit the date format, from the Regional Settings Menu select Date Format and press

Enter. The following screen appears.

Enter. The screen returns to the Display Menu.

Use the left and right arrow keys to select the desired date format and press Enter. The screen returns to the previous display.

4.6.4 Setting the Unit System

IMPORTANT: If the Country Code (see “Setting the Country Code” on page 65) has been set to 81 (Japan) the

Unit System menu is not available.

To select the unit system to be used for measurements, select Unit System and press

Enter. The following screen appears.

Use the left and right arrow keys to select the Unit System desired [SI = only metric units are available in the selection menus; SI + US = both metric and English units are available in the selection menus] and press Enter. The screen returns to the Regional Settings Menu.

Note: Changing the Unit System setting from

current Display or Outputs units. This is because it is not possible for the

SI+US to SI in the above menu will NOT immediately change the

Aurora H2O to know the SI

measurement units desired by the operator to replace any currently displayed or output English units. However, the next time the operator selects different Display (see “Selecting Primary Units” on page 40) or Outputs (see “Selecting Output Units” on page 43) units, only

66 Aurora H2O User’s Manual

SI units will be available in the menu.

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Chapter 4. Programming Advanced Features

4.7 User Calibration

Beginning with software revision H2O.001.F, the Aurora H2O supports a two-point User Calibration for use in methane/natural gas. This is provided so that a field calibration can be easily performed to cause the measurement to correspond to a calibration gas or other moisture device. The User Calibration is independent from, and does not affect, the Factory Calibration. The

Aurora H2O can be quickly switched between User and Factory

calibration at any time.

When a User Calibration is active, an asterisk (*) will appear in the upper left corner of the primary display.

Aurora H2O

Before the calibration can be performed, the methane selected as the Background Gas.

Choose Settings... from the Main Menu. A User Cal... selection is now provided.

Note: If the

Aurora H2O is set for Nitrogen as the background gas, the User Cal selection will be disabled/grayed out.

Aurora H2O will prompt for the User Passcode [2719]

The

By default, the Calibration Menu is disabled with the exception of the Status selection.

Aurora H2O must be operating correctly in methane or natural gas, with

Aurora H2O is operating with the Factory calibration, so the User

Select Status, and choose User as the Active Calibration.

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Chapter 4. Programming Advanced Features

4.7 User Calibration (cont.)

The User Calibration Menu is now enabled.

The selections on the User Calibration Menu include the following functions:

Item Purpose

Zero Gas User specifies the water concentration, in PPMv, of the “Zero”, or dry gas.

Span Gas User specifies the water concentration, in PPMv, of the “Span”, or Cal/Wet gas.

Read Zero The

Aurora H2O will read the signal while exposed to the Zero gas.

Read Span The

Aurora H2O will read the signal while exposed to the Span gas, then determine the

CH4 Offset and Scalar calibration values.

CH4 Offset Permits the user to view/edit the calculated offset term.

CH4 Scalar Permits the user to view/edit the calculated scalar (gain) term.

First select the Zero Gas and Span Gas items, to specify the cal gases to be used. The zero gas must be in the range of 0.0 to 50.0 PPMv water. It is recommended that the zero gas be 10.0 PPMv or higher for best results. The Span gas must be in the range of

0.0 to 5000.0 PPMv water. It is recommended that the Span gas be 500.0 PPMv or lower for best performance.

Apply the Zero gas, and wait for the

Aurora H2O reading to stabilize.

Note:The user can exit to the display and return to the User Cal Menu without affecting

the Calibration procedure.

When the reading is stable, select

Read Zero. The Aurora H2O performs multiple

measurements for approximately 15 seconds, indicating its progress. When the readings are complete, you will be prompted to apply the span gas, and continue. If there is doubt about the stability of the zero gas, the reading can be repeated at this point.

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4.7 User Calibration (cont.)

Apply the Span gas, and wait for the Aurora H2O reading to stabilize.

Chapter 4. Programming Advanced Features

When the reading is stable, select Read Span. The calculates the new calibration. If the calculated values are determined to be valid, the

Aurora H2O uses the current measurement, and immediately

Aurora H2O will display

“Calibration OK” and prompt you to Save the results, or Cancel. If the values are not valid, the Aurora will display “Calibration *FAILED*”, and prompt you to continue. On a cal failure or Cancel, no change is made to the User Calibration values.

The CH4 Offset and CH4 Scalar items can be used to view or modify the calculated calibration points, if desired.

Note: The default values for the CH4 Offset is 0.0 and the CH4 Scalar is 1.0. These defaults are NOT the same as the

Factory Calibration! Making the User Cal active without performing the actual calibration will adversely

affect the accuracy of the

Aurora H2O should be returned to the Factory calibration using the Status item.

Aurora H2O. If there is any doubt about the quality/accuracy of the gases used, the

4.8 Service Settings

CAUTION! The Service Settings Menu should be used by factory-trained personnel only.

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Chapter 4. Programming Advanced Features

Gas Composition

4.9 Aurora H2O Information

To check the Aurora H2O information, from the Main Menu select About and press

Enter. The following screen appears.

4.9.1 Checking the ID

To check identification information, select ID and press Enter. A screen similar to the following appears.

To return to the About Menu, press

4.9.2 Checking the System Status

To view the status of the Aurora H2O system, from the About Menu select System Status and press

Uptime: is the elapsed time since the Aurora H2O was powered on or reset. Started: is the date and time that the Aurora H2O was last powered on/reset. Start Temp: is the laser housing temperature as measured at the last startup/reset. Laser Hours: indicates the total lifetime that the laser has been energized.

To return to the About Menu, press

Enter.

Enter. A screen similar to the following appears.

Enter.

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4.9.3 Checking the Software

Gas Composition

To view the software versions being used, from the About Menu select Software Versions and press

Chapter 4. Programming Advanced Features

Enter. A screen similar to the following appears.

To return to the About Menu, press

4.9.4 Checking the Gas Composition

To view the gas content, from the About Menu select Gas Composition and press Enter. A screen similar to the following appears.

To return to the About Menu, press

Enter.

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Chapter 4. Programming Advanced Features

4.9.5 Checking the Alternate Gas Composition

The Aurora H2O TDLAS is normally calibrated to a standard gas mixture that is representative of “typical” natural gas. The primary components and concentrations of this gas mixture are as follows:

Component Concentration

Methane (CH4) 90.0%

Nitrogen (N

Carbon Dioxide (CO

For special applications, where the composition of the gas to be measured differs significantly from the standard, GE can provide an alternate calibration. If this service has been ordered, the with both the standard and a custom calibration installed.

)6.0%

)4.0%

Aurora H2O will be shipped from the factory

The calibration in use can be verified at any time using the From the Main Menu, select About and press

Enter. The following screen appears.

From the About Aurora menu, select Gas Composition and press

Aurora H2O About… menu.

Enter. The following

screen appears.

An identifier label for the gas composition will be displayed above the components:

Gas Composition Identifier

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4.10 Locking/Unlocking the Display

To lock the Aurora H2O against any future changes, from the Main Menu select Lock and press

Note: This menu option is the same as exiting the programming menu and waiting for a keypad time-out to lock the keypad.

Enter. The screen returns to the standard display.

Chapter 4. Programming Advanced Features

To unlock the A

urora H2O for changes, press Cancel, Enter, Cancel as instructed in

“Unlocking the Keypad” on page 38.

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Chapter 4. Programming Advanced Features

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Chapter 4. Programming Advanced Features

Display Outputs Alarm Settings Service About Lock

Alt 2Alt 1Primary Decimal Adjust

ppmv

mg/m

Pw, kPa

Dew Pt °C

Hygro

Temp Press

kPa

mPa

bar

kg/cm

mmHg

PSIa

PSIg

Primary

Alt 1

Alt 2

1 decimals

Set Decimal for:

ESC = Cancel

ENT = Save ESC = Cancel

Select

Units

Type

Upper

Lower

Test

Trim...

Select Output:

ESC = Cancel

Select Unit Type:

Hygro

Temp

Press

Select Output Type:

4-20 mA

0-20 mA

Set Output A, B or C:

Span

Zero

i.e. 00250.0 PPMv

Set Output A, B or C

i.e. ±050.00 %

Reset Trim

Select

Units

Select Output:

ESC = Cancel

Select Unit Type:

Hygro

Temp

Press

Status

Set Alarm Status

OFF

Type

Select Alarm Type:

Setpoint

Out Band

In Band

Test Value

Comms...

Comm Port:

Select

Network ID

Protocol

Select Comm Port SCADA / Service

Baud Rate

9600

4800

115.2 k

57.6 k

38.4 k

19.2 k

Select

RS-232

RS-485

Set Node ID:

i.e. 001

Adjust

Adjust Offset Values:

ppm Level

Filter

Smoothing Filter: i.e. 200 Samples

Clock

Date

Year

Hour

Minutes

Month

Set Clock:

Set Hour [0-23]: Set Minutes [0-59]: Set Month [1-12]: Set Date: Set Year:

Gas

Pressure

Pressure Settings

Source

Constant

Cal Data

Select Pressure Source:

Constant

Live

Enter Line Pressure: i.e. ± 0101.325 kPa

Edit Pressure Cal:

Select Cal Point

Edit Input Value

Edit Pressure Value

Enter Line Signal:

i.e. 04.000 mA

Select Calibration Point:

Zero

Span

Enter Line Pressure: i.e. 00000.000 kPa

About Aurora:

System Status

GE Copyright, etc. Unit SN: Sensor SN:

Uptime: i.e. 0 d 00 h Laser Hours: i.e. 85

BOOT: PROG:

Lock Display

Upper

Lower

Enter A, B or C

i.e. ± 000.0 Td °C

Min/Max Alarm Value

Main Menu

Parity

EVEN

ODD

NONE

Set

Date Format

Unit System

Locale

Regional Settings

Trim Span

Trim Zero

Set Output A, B or C

Factory-trained

personnel only

Hygro Temp

Pressure

SI+US

DP °C, Eq. DP °C, mg/m, g/m3, PPMv, Pw kPa

Eq. DP °F, Lbs/MMSF

T °C, DP °C

T °F, DP °F

All SI units plus:

PSIa, PSIg

Bar, kg/cm

Note: The selection of "English" or non-metric measurements is dependent on the Regional Settings from the LOCALE menu. The unit system choices are SI (from the French Le Systeme International d'Unites), commonly

referred to as the "metric" system, or SI+US.

Measurement Units

Reverse

Dew Pt °F

Eq DP °C

Eq DP °F

ppmv

mg/m

Pw, kPa

Dew Pt °C

Dew Pt °F

Eq DP °C

Eq DP °F

Temp °C

Temp °F

Temp K

Dew Pt °C

Dew Pt °F

Sample Line

Passcode Protected

Parity

Protocol

Background

STD

Select

Background

Gas

Set

Molecular

Weight

Dew FrostDew

Displays composition of selected background gas

Label

(Passcode protected)

User Calibration

Status

Factory

User

g/sm

Gas1

CH4

Gas2

Z Factor

Select Pressure Units:

kPa(a)

Barg

PSIg

barg

g/sm

ALM

Stop Bits

ONE

TWO

Set

Stop Bits

Remote

mg/m ,

All SI units plus:

Fault

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Figure 45: Programming Menu Map

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Chapter 4. Programming Advanced Features

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Chapter 5. AuroraView Interface Software

5.1 Capabilities

Yo ur Aurora H2O Analyzer is shipped with a CD which includes a PC-Software Application called AuroraView. With

AuroraView, you can:

• View Aurora H2O Configuration Items such as Alarms & Outputs.

• Use the DataLog function to copy data to a comma delimited .txt file which can be opened by spreadsheet

applications such as Microsoft Excel.

• Plot real-time data for one or more Aurora H2O parameters

• Manipulate plotted data in a variety of ways such as: color, line type, zoom in/out, etc.

• Trend tabular data in real-time.

• Show Scan Plots of the moisture absorption spectra.

• Copy plots from AuroraView to other Window applications like Microsoft Powerpoint or Word.

AuroraView does not provide functionality for the following:

• Aurora H2O software updates.

• Save the Aurora H2O Configuration. The Aurora H2O has a robust design which allows the meter to recover

from fault conditions without the need to upload the configuration of the meter using external software.

5.2 Requirements

AuroraView leverages a National Instruments Run-Time environment. This environment is supported on the following

operating systems with the minimum installation requirements indicated:

• 260 MB of available hard disk space

• 64 MB of RAM or more

• 300 MHz Pentium CPU

• Windows NT 4.0 SP6 or higher, Windows ME, Windows 2000, Windows XP

• Internet Explorer v5.0 or higher

AuroraView supports the following serial interfaces:

• RS232

• RS485 Modbus

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Chapter 5. AuroraView Interface Software

5.3 Installing AuroraView

1. Insert the Installation CD into the optical drive on your PC.

2. The installation program should launch automatically (see Figure 46 below). If it does not, select Start → Run

→ Browse.

Figure 46: Initial Screen

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Chapter 5. AuroraView Interface Software

5.3 Installing AuroraView (cont.)

3. Browse to the file named “setup.exe” in the root directory of the CD (see Figure 47 below). Double-click the file to start the installation.

Figure 47: AuroraView Installer

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Chapter 5. AuroraView Interface Software

5.3 Installing AuroraView (cont.)

4. Exit all other programs before running the installer (see Figure 48 below).

Figure 48: Installation Recommendation

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Chapter 5. AuroraView Interface Software

5.3 Installing AuroraView (cont.)

5. The next screen (see Figure 50 below) provides the opportunity to change installation locations if desired. When ready, click

Next.

Figure 49: Destination Directory

6. At the next screen, accept the Software License Agreement (see Figure 50 below) and click

Next.

Figure 50: Software License Agreement

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Chapter 5. AuroraView Interface Software

5.3 Installing AuroraView (cont.)

7. The next screen (see Figure 51 below) provides instructions for initiating the installation. When ready, click

Next to begin.

Figure 51: Starting the Installation

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5.3 Installing AuroraView (cont.)

8. During installation, the screen shown in Figure 52 below appears.

Chapter 5. AuroraView Interface Software

Figure 52: Overall Progress

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Chapter 5. AuroraView Interface Software

5.3 Installing AuroraView (cont.)

9. The screen shown in Figure 53 below appears when the installation is complete.

Figure 53: Installation Is Complete

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Chapter 5. AuroraView Interface Software

5.4 Starting AuroraView

1. From the Start menu, click Programs → AuroraView → AuroraView (see Figure 54 below).

Figure 54: AuroraView in Programs Menu

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Chapter 5. AuroraView Interface Software

Command Line

Alarms Status

Reading

Interval Datalog Interval

Current Readings

Pane

Trend Tabular Data Tab

Scan Plots Tab

Trend Plots Tab

5.4 Starting AuroraView (cont.)

2. AuroraView boots up and displays a screen similar to Figure 55 below.

Figure 55: AuroraView Main Screen

86 Aurora H2O User’s Manual