GE Sensing Aurora H2O Operating Manual
GE
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
GE
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
©2017 General Electric Company. All rights reserved.
Technical content subject to change without notice.
[no content intended for this page]
ii
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
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
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
Preface
[no content intended for this page]
vi Aurora H2O User’s Manual
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
Aurora H2O User’s Manual vii
Contents
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
viii Aurora H2O User’s Manual
Contents
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
Aurora H2O User’s Manual ix
Contents
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
x Aurora H2O User’s Manual
Contents
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
Aurora H2O User’s Manual xi
Contents
[no content intended for this page]
xii Aurora H2O User’s Manual
Chapter 1. Features and Capabilities
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
3
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.
Aurora H2O User’s Manual 1
Chapter 1. Features and Capabilities
AIn
I
o
I
---
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
I
o
S = Absorption coefficient*
L = Absorption path length (a constant)
N = Concentration of the water vapor in the absorption cell
3
) 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
6
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.
2 Aurora H2O User’s Manual
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.
Aurora H2O User’s Manual 3
Chapter 1. Features and Capabilities
1
2
3
4
5
6
7
9
10
8
11
12
13
14
15
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
4 Aurora H2O User’s Manual
Chapter 1. Features and Capabilities
1
2
3
4
5
6
7
9
10
8
12
13
14
15
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
Aurora H2O User’s Manual 5
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
6 Aurora H2O User’s Manual
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)
01
02
03
750-633
750-634
750-635
Probe
Length
Overall
Length
4.00"
7.00"
9.00"
11.80"
14.80"
16.80"
1
2
3
4
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
06
4.00"
7.00"
9.00"
11.80"
14.80"
16.80"
750-633
750-634
750-635
1
2
3
Probe/filter/regulator assembly
Pressure Gauge, 0 to 600 psig
2-way ball valve
4
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
Chapter 1. Features and Capabilities
THERMOSTAT
HEATER CONNECTION
CUSTOMER CABLE GLAND
1
2
3
45
6
7
8
BROWN
J1
16 AWG BROWN WIRE (2")
STRIP 1/4"
BLUE
GREEN/YELLOW
LINE
NEUTRAL
GROUND
230 VAC 120 VAC
L1
L2
G
L
N
G
12
34
CUSTOMER CABLE
CABLE TO THERMOSTAT
CABLE TO HEATER
CABLE FUNCTION
CONDUCTOR
COLOR
J-BOX TERMINAL
CUSTOMER POWER
LINE 1
BROWN
3
LINE 2
BLUE
4
GROUND
GREEN/YELLOW
1
THERMOSTAT
LINE 1
BROWN
2
LINE 2
BLUE
3
GROUND
GREEN/YELLOW
1
HEATER
LINE 1
BROWN
2
LINE 2
BLUE
4
GROUND
GREEN/YELLOW
1
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
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
v
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
)
v
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
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
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
CE
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
Chapter 1. Features and Capabilities
[no content intended for this page]
12 Aurora H2O User’s Manual
Chapter 2. Installation
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
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
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
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
Loading...