MSA galaxy GX2 User manual

Operating Manual
Galaxy GX2 Automated Test System
Automated Test System
Order No.: 10127150/04
Print Spec: 10000005389 (EO)
CR: 800000054013
MSAsafety.com
US

© MSA 2022. All rights reserved
WARNING!
These instructions must be provided to users before use of the product and retained for ready reference by the user. Read this
manual carefully before using or maintaining the device. The device will perform as designed only if it is used and maintained in
accordance with the manufacturer's instructions. Otherwise, it could fail to perform as designed, and persons who rely on this
device could sustain serious injury or death.
The warranties made by MSA with respect to the product are voided if the product is not installed and used in accordance with
the instructions in this manual. Please protect yourself and your employees by following the instructions.
Please read and observe the WARNINGS and CAUTIONS inside. For additional information relative to use or repair, call
1-800-MSA-2222 during regular working hours.
WARNING!
Refer to the applicable gas detector(s) operating manual for proper set-up and operation. Follow all local regulations and
internal requirements relating to both the GALAXY GX2 System and the gas detector.
Failure to follow this warning can result in serious personal injury or death.
MSA is a registered trademark of MSA Technology, LLC in the US, Europe and other Countries. For all other trademarks visit
https://us.msasafety.com/Trademarks.
1000 Cranberry Woods Drive
Cranberry Township, PA 16066
USA
Phone 1-800-MSA-2222
Fax [phone]
For your local MSA contacts, please go to our website www.MSAsafety.com

US Galaxy® GX2 3
Contents
1 Safety Regulations 5
1.1 Correct Use 5
1.2 Product Warranty 5
2 Introduction 7
2.1 Power Supply 9
2.2 The Test Stand 9
2.3 Ethernet Interface 11
2.4 Software Options 11
2.5 Cylinder Holder (electronic) 11
2.6 Optional Multi-Unit Charger 12
2.7 Special Conditions for Use with Reactive Gases 13
3 Installation 15
3.1 Connect Units in a Bank 16
3.2 Connect a Test Gas Source Without a Cylinder Holder 17
3.3 Network Test Stands 17
3.4 Removing Gas Seal for Certain ALTAIR and ALTAIR Pro Instruments 18
3.5 Desktop Mounting 18
3.6 Wall Mounting 20
3.7 SD or SDHC Memory Card Option 20
4 Setting Up the GALAXY GX2 System 22
4.1 Initial Setup 22
4.2 dana.Security Setup 23
4.3 Home Screen 23
4.4 General Setup 25
4.5 GX2 Configuration 26
4.6 Instrument Configuration 36
4.7 daCylinder Configuration 41
5 Using the GALAXY GX2 System 45
5.1 Turning on the System 45
5.2 Inserting the Instrument 45
5.3 Running a Test 46
5.4 Classic Mode 49
5.5 Automated Testing Features 49
5.6 Email Notification 51
5.7 Overdue Calibration and Bump Notification 51
6 Troubleshooting 52
6.1 Instrument Will Not Initiate a Bump or Calibration 52
6.2 Instrument Fails Zero Calibration or Bump 52
6.3 Instrument Fails Span Calibration or Bump 52
6.4 Instrument Records Do Not Display 53
6.5 Test Records Not Saved to Memory Card 53
6.6 Cylinder Data Does Not Display 53
6.7 Test Stand Yellow LED 53
6.8 System Error Messages 55
6.9 Automated Testing Does Not Occur 55
7 Maintenance (Cleaning and Part Replacement) 57
7.1 Corrective Maintenance 57
7.2 Replacement Parts and Accessories 57

4 Galaxy® GX2 US
7.3 Fresh Air Filter Replacement 59
7.4 O-Ring Seal Replacement (Cylinder Holder) 60
7.5 Inlet Seal Replacement (ALTAIR 5/5X Gas Detector) 60
7.6 Rubber Insert Replacement (ALTAIR Gas Detector) 61
8 Technical Specifications 63
9 GALAXY GX2 Default Parameters 64

1 Safety Regulations
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1 Safety Regulations
1.1 Correct Use
WARNING!
Read this manual carefully before using the instrument. The instrument will perform as designed only if it is used and
maintained in accordance with the manufacturer's instruction. Otherwise, it could fail to perform as designed and persons
who rely on this instrument for their safety could sustain serious personal injury or death.
WARNING!
Do not use silicone-type lubricants in assembling the GALAXY®GX2 Automated TestSystem and do not allow silicone
vapors to be drawn into the flow system while in operation. Silicone can desensitize the combustible gas sensor, thereby
giving erroneously low readings.
Use the GALAXY GX2 System only in non-hazardous environments free of combustible concentrations of gases and
vapors. System use with 100% LEL or greater methane is described in chapter 4.7 under Special Conditions for Use with
100% LEL or Greater Methane Calibration Gas.
Use only genuine MSA replacement parts when performing any maintenance procedures on the GALAXYGX2 System.
Substitution of components can seriously impair performance.
Failure to follow this warning can result in serious personal injury or death.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired
operation.
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user will be required to correct the
interference at his own expense.
NOTICE
This is a class A product in accordance with CISPR 22. In a domestic environment, this product may cause radio
interference, in which case the user may be required to take adequate measures.
FCC Warning Statements
Changes or modifications not expressly approved by the manufacturer could void the user's authority to operate the
equipment.
Industry Canada (IC) Warning Statements
The installer of this radio equipment must ensure that the antenna is located or pointed such that it does not emit RF field in
excess of Health Canada limits for the general population; consult Safety Code 6, obtainable from Health Canada's
website www.hc-sc.gc.ca/rpb.
1.2 Product Warranty
The warranties made by Mine Safety Appliances Company with respect to the product are voided if the product is not used
and serviced in accordance with the instructions in this manual. Protect yourself and others by following them. We

6 Galaxy® GX2 US
1 Safety Regulations
encourage our customers to contact MSA regarding this equipment prior to use or for any additional information relative to
use or repairs.
ITEM WARRANTY PERIOD
GALAXY GX2 Test Stand,
CylinderHolder and Multi Unit Charger
MSA warrants that this product will be free from
mechanical defects and faulty workmanship for a
period of two (2) years from date the product is first
used, provided it is maintained and used in accordance
with MSA's instructions and/or recommendations.
Warranty shall not exceed two years and six months
from the date of manufacture.
This warranty does not cover filters, fuses, etc. Certain other accessories not specifically listed here may have different
warranty periods. This warranty is valid only if the product is maintained and used in accordance with Seller's instructions
and/or recommendations. The Seller shall be released from all obligations under this warranty in the event repairs or
modifications are made by persons other than its own or authorized service personnel or if the warranty claim results from
physical abuse or misuse of the product. No agent, employee or representative of the Seller has any authority to bind the
Seller to any affirmation, representation or warranty concerning this product. Seller makes no warranty concerning
components or accessories not manufactured by the Seller, but will pass on to the Purchaser all warranties of
manufacturers of such components.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED OR STATUTORY, AND IS
STRICTLY LIMITED TO THE TERMS HEREOF. SELLER SPECIFICALLY DISCLAIMS ANY WARRANTY OF
MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE.
Exclusive Remedy
It is expressly agreed that Purchaser's sole and exclusive remedy for breach of the above warranty, for any tortious
conduct of Seller, or for any other cause of action, shall be the replacement at Seller's option, of any equipment or parts
thereof, which after examination by Seller is proven to be defective. Replacement equipment and/or parts will be provided
at no cost to Purchaser, F.O.B. Seller's Plant. Failure of Seller to successfully replace any nonconforming equipment or
parts shall not cause the remedy established hereby to fail of its essential purpose.
Exclusion of Consequential Damage
Purchaser specifically understands and agrees that under no circumstances will seller be liable to purchaser for economic,
special, incidental or consequential damages or losses of any kind whatsoever, including but not limited to, loss of
anticipated profits and any other loss caused by reason of nonoperation of the goods. This exclusion is applicable to claims
for breach of warranty, tortious conduct or any other cause of action against seller.

2 Introduction
US Galaxy® GX2 7
2 Introduction
Congratulations on purchasing the GALAXY GX2 Automated Test System, the next generation Test Stand and instrument
management system from MSA. This system is used exclusively with the ALTAIR®family of gas detectors. This manual
uses the terms instrument and gas detector to represent that entire line of ALTAIR gas detection instruments.
In this manual the user will learn to install and configure the GALAXY GX2 Test Stand and optional attachments, and test
gas detectors. Maintenance, Troubleshooting, and Technical Specifications sections are also provided.
The Test Stand uses a sophisticated internal processor and simple to use touch screen display for the configuration of
calibration parameters and gas detector settings, and for gathering instrument data.
Each Test Stand and optional attachments can be wall or desk mounted to serve the needs of the user. Constructed of
durable composite polymers, this equipment is designed for normal indoor applications and operates within a broad
temperature range of 0º to 40ºC in non-condensing humidity atmospheres.
The principal components of the GALAXY GX2 System include the Test Stand and optional electronic or non-electronic
Cylinder Holder and Multi-Unit Charger. These components [àFigure 1 ] are designed to be attached to avoid accidental
separation during operation.
Figure 1 The GALAXY GX2 Automated Test System
The Test Stand is a standalone unit that can accommodate one gas detector of the ALTAIR family. However, each Test
Stand contains the plumbing and electronic ports to simultaneously connect a total of 10 Test Stands and four Cylinder
Holders (electronic or non-electronic).
For applications where multiple Cylinder Holders are connected, the Test Stand Expanded Solenoid option must be
ordered. This option allows the Test Stand to open and close up to four Cylinder Holder valves for gas detectors that may

8 Galaxy® GX2 US
2 Introduction
require multiple cylinders for test purposes. For example, an ALTAIR 5/5X with the standard 4sensors plus a toxic sensor
likely requires two gas cylinders.
The electronic Cylinder Holder is designed to read a Radio Frequency Identification (RFID) tag embedded in a plastic ring
on MSA test gas cylinders. The RFID tag contains cylinder parameters that are necessary for successful calibration
operations, providing the customer with an exceptionally easy setup experience. Gas cylinder information is automatically
populated without user intervention when using the RFID-tagged gas cylinders.
If MSA test gas cylinders are not used, the non-electronic version of the Cylinder Holder is available. This configuration [à
Figure 2 ] requires the user to manually enter cylinder parameters.
Figure 2 Non-electronic Cylinder Holder and Test Stand.
A USB port is provided on the Test Stand that may be used with the GALAXYGX2 USB key to change instrument settings
via the touch screen. This function allows for convenient fleet management capabilities.
The primary functions of the Test Stand are to calibrate and bump the ALTAIR family of gas detectors.
A Bump Test (or Function Check) is a qualitative check conducted by applying a known challenge gas to the instrument.
The purpose of this check is to confirm sensor functionality and to verify the integrity of the flow path to the sensor(s).
MSA recommends that users perform a bump test prior to each day's use.
A successful calibration consists of the adjustment of the sensor('s) output to match the precise concentration value of a
known traceable calibration cylinder. A calibration can be performed at any time to ensure maximum accuracy. A
calibration should be performed periodically at regular intervals and immediately if the unit fails a bump test.
See the instrument manual for specific conditions that require a more frequent bump or calibration interval. Also see the
instrument manual for information on checking the gas detector alarm functions.
In the following sections of this manual the user will learn how to install the GALAXYGX2 AutomatedTestSystem, set up
its functionality, and perform instrument tests. The hardware, software, and configuration options anticipate the user's
needs and provide superb efficiency in this next generation Automated Test System.

2 Introduction
US Galaxy® GX2 9
GALAXY GX2 System Features and Options
The GALAXY GX2 System automatically identifies the type of gas detector inserted into the Test Stand. Based on user-
defined settings, the Test Stand then performs bump tests and/or calibrates the instrument. The data collected from each
test event is stored to a memory card [à2.2 The Test Stand].
2.1 Power Supply
The Test Stand supplies power to the attached electronic Cylinder Holders. The Test Stand and Multi-Unit charger are
powered individually by one of the following methods:
• Power Module: Input power requirements: 100 - 240 VAC, 47 - 63 Hz
(Several different prong types are available for world-wide AC sockets).
• Optional Vehicle Module 12/24 VDC (For use in a cigarette lighter socket).
NOTICE
Use of a power supply not specified by MSA will void the instrument warranty and could cause damage to the GALAXY
GX2 System.
2.2 The Test Stand
The Test Stand performs the following functions:
lBump or calibration testing per user setup.
lRecords test results to the optional memory card and to an optional networked PC interface.
lSends gas detector Instrument Periodic and/or Session datalogs to a networked PC interface.
lProvides optional instrument charging capability.
lUSB key allows gas detector settings to be changed securely, with the touch of the Test Stand screen.
lSends e-mail notification of system alerts per user setup.
An LED indicator shows the status of the Test Stand:
lGreen light indicates that the Test Stand hardware and software are fully functional.
lBlinking green light indicates that the Test Stand is performing the user specified test or datalog download.
lBlinking yellow light indicates that the Test Stand is in error and cannot be used for gas detector testing. Diagnostic
information is available as described on the "GX2 Status" screen on the Test Stand and in the Troubleshooting
section of this manual [àchapter 6 Troubleshooting].
lRed light indicates that the last calibration or bump test failed.
Figure 3 Test Stand Physical Features

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2 Introduction
1 Touch Screen Display 4 SD Card Port
2 Status LED 5 USB Port
3 Test Stand to Test Stand connector 6 Gas plugs
SD or SDHC Memory Card Slot
A memory card port is provided on the Test Stand for calibration and bump record storage. Only one SD card is needed per
bank and must be inserted in the Master Test Stand. An SDor SDHC memory card with 4-32 GB of memory can be
purchased from MSA (preferred) or from the following manufacturers:
lKingston
lSanDisk
lLexar
lWintec
The data on an SD or SDHC memory card is encoded for use with your MSA Grid account. There is also an application
available on the MSA website to create a printable version of the SD card records (MSA GALAXY GX2 SD Card
Reader.exe). The type and amount of datarecorded to the memory card is contingent on whether the Test Stand is
networked.
Test Stand Networked to a PC
If the network connection is lost, only calibration and bump records are saved to the memory card. If connected to a MSA
Grid account, the Test Stand will generate an email alert once the memory card reaches 90% and again at 99% capacity.
Test Stand is Stand-Alone
If the GALAXY GX2 Test Stand is not networked to a MSA Grid account, the memory card will save each calibration and
bump test record. Incomplete records will not be saved. Once a memory card reaches full capacity, the Test Stand will be
in fault and prohibit any unit from performing tests in that bank, until corrected. The Test Stand can be configured to erase
the memory card, or the user can insert a replacement.
The memory card should only be removed when no test activity is occurring. Events that occur while no
memory card is installed will not be stored in the Test Stand.
If no memory card is used, only the most recent bump or calibration record is stored to the Test Stand internal
memory.
An optional end cap [àFigure 4 ] can be placed over the port to protect the memory card and all externalconnections.
Figure 4 Optional End Cap
USB Drives

2 Introduction
US Galaxy® GX2 11
A USB key is available for purchase with the GALAXYGX2 AutomatedTest System:
lGALAXYGX2 USB Key: This key is inserted in the USB port on the Test Stand in order to change gas detector
settings. The key ensures only authorized users can change settings on ALTAIR gas detectors; a security step in
addition to the four-digit password.
2.3 Ethernet Interface
Two Ethernet Interfaces are provided on the rear of the GALAXYGX2 Test Stand [àFigure 5 ]. The ports allow for the
connection and communication distribution between multiple Test Stands. If networking to a computer, one Ethernet port
on the Master Test Stand is used to communicate with your MSA Grid account.
Figure 5 Test Stand Ethernet jacks
2.4 Software Options
The GALAXYGX2 System functions as a standalone system, but an MSA Grid account provides a best-in-class user
interface and data analysis toolset to quickly identify issues or concerns thatrequire user action.
Users may use the free MSALinksoftware application and an IR dongle [àchapter7.2 ] to communicate
directly with their gas detector. MSALink software allows a user to upload and download instrument settings,
and download datalogs.
To learn more about a MSA Grid account, visit MSAsafety.com.
2.5 Cylinder Holder (electronic)
The electronic Cylinder Holder can accommodate one test gas cylinder and includes:
Figure 6 Cylinder Holder Physical Features

12 Galaxy® GX2 US
2 Introduction
1 Light Band 2 RFID Tag 3 Internal Pressure Regulator &
Sensor
Multi-Color Light Band RFID Tag Gas
Identification
Pressure Regulator & Sensor
Indicates gas bottle functionality.
• Green indicates a bottle is completely
functional, and gas parameters are
within pressure and expiration date
limits.
• Yellow indicates low calibration gas, or
gas is nearing its expiration date.
• A blinking yellow light band indicates a
hardware problem with the cylinder
holder.
• Red indicates an empty calibration gas
bottle, or that gas has expired.
Reads the RFIDtag of the MSA
testgas cylinder and transmits:
• the gas type
• gas concentration
• expiration date
• lot number
• cylinder part number
to the Test Stand. The
RFIDtag is only available on
MSA-branded test gas
cylinders shown in the
Maintenance section
[àchapter7].
Reads the pressure of the gas cylinder
and transmits that information to the
Test Stand.
• When gas pressure drops to
approximately 99psi (6.89bar) a
warning will display and the
display numbers appear yellow.
• Once pressure drops to
approximately 49psi (3.45bar)
the display numbers appear red.
• Once pressure drops to less than
10psi (0.69bar) the TestStand
will prohibit testing with that
cylinder.
2.6 Optional Multi-Unit Charger
There are two configurations of the optional Multi-Unit Charger (MUC). The ALTAIR 4/4X MUC can simultaneously charge
up to four ALTAIR 4/4X gas detectors. Similarly the ALTAIR 5/5X MUC can charge four 5/5X gas detectors. Each Multi-Unit
Charger contains its own power supply and does not connect electrically to the Test Stand. The housing is designed to
physically connect to each other, whether bench-top or wall-mounted (ifdesired).
The light indicators on the Multi-Unit Charger are defined as follows:

2 Introduction
US Galaxy® GX2 13
•Red indicates that the unit is charging
•Green indicates that the unit is fully charged or no unit is inserted.
Verify the Multi-Unit Charger indicator lights red when an instrument is inserted. A fully charged instrument
will momentarily flash red and the indicator will light green. If the red light does not engage the instrument may
not be seated properly on the charging prong.
Instruments whose battery is completely discharged will need to be trickle-charge -prior to normal charging
operations. Such instruments will show a green LED during the trickle-charge period until normal charging is
initiated, at which time the red LED will be active.
There can be as much as a 10 minute window between when the instrument battery indicator shows charged and the Multi-
Unit charger status indicator changes. The instrument indicator is the most accurate and will indicate the true charge state
of the battery.
Figure 7 Multi-Unit Charger (Altair 4/4X and 5/5X only)
2.7 Special Conditions for Use with Reactive Gases
If using a Test Stand and Cylinder Holder for calibrating or bump testing a gas detector configured with a chlorine,
ammonia sensor:
lPlace the chlorine or ammonia gas cylinder in the Cylinder Holder closest to the Test Stand.
lOnly one reactive gas Test Stand is allowed in a bank.
lIf connecting other Test Stands to the right of the reactive stand, plug the reactive gas outlet port with a white gas
plug before mating the next Test Stand. Otherwise, inaccurate calibration could result on the reactive sensor.
lBefore the first use with reactive toxic gas, condition the regulator and Test Stand with the gas, by running
the calibration twice in sequence. If using chlorine, perform this procedure daily before use.
If not using GALAXY GX2 Cylinder Holders:
lUse a dedicated pressure regulator on the reactive toxic gas cylinder (for chlorine or ammonia, use P/N 10034391).
Label the pressure regulator "FOR CHLORINE USE ONLY" or "FORAMMONIA USE ONLY", as applicable (label
stickers are provided with regulator).

14 Galaxy® GX2 US
2 Introduction
lUse the shortest possible tubing running from the reactive toxic gas pressure regulator to the Test Stand's
"CYLINDER 1" port.
lBefore the first use with reactive toxic gas, condition the regulator and Test Stand with the gas by running
the calibration twice sequentially; for chlorine, perform this procedure daily before use.
lMany gases have a cross-sensitivity to other gases. Ensure that test cylinder gases do not contain other
interfering gases.
The GALAXY GX2 System does not support the calibration or bump testing of chlorine dioxide (ClO2) sensors due to
the reactive nature of the gas. If calibrating an Altair Pro ClO2, use the QuickCheck.

3 Installation
US Galaxy® GX2 15
3 Installation
The GALAXY GX2 System is a simple to install system that can be desktop or wall mounted. Setup requires simple tools
and just a few minutes of time.
Carton Contents
The GALAXY GX2 System will be shipped with the following:
lTest Stand (including gas plugs, barbs and fresh air filter)
lPower Supply (if ordered)
lSpare Parts Kit (gas tubing barbs and plugs)
lEthernet Cable (short cable for connection between Test Stands)
lProduct CD
lQuick Start Guide
lScreen Protector (installed on the display screen)
lDIN Rail clip kit
Tools Needed
lPhillips head (cross-head) screwdriver.
As stated in the Introduction, the GALAXY GX2 System is designed for the connection of up to 10TestStands and four
Cylinder Holders [àFigure 8 ]. Test Stands must be assembled sequentially on the right-hand side of the first. Cylinder
Holder(s) must be installed on the left-hand side of the first Test Stand.
Figure 8 Test Stands and Cylinder Holders properly installed in a bank
Test gas cylinders containing Chlorine or Ammonia must be installed according to the directions in the
Special Conditions for Use with Reactive Gases section [àchapter2.7 ].
When installing the GALAXYGX2 System, please consider the environmental needs of your facility. If the
customer desires, the GALAXYGX2 System can be used in a ventilatedarea to assist in disbursing the test
gas exhaust.

16 Galaxy® GX2 US
3 Installation
WARNING!
lEnsure a clear path above the gas cylinder when installing or removing it. Do not place head, hands or other body
parts above the gas cylinder when installing or removing it.
lDo not allow the gas cylinder to thread out of the gas cylinder valve when removing it from the io Dock. If the gas
cylinder threads out of the gas cylinder valve, it can become a projectile.
lDo not overtighten the cylinder when installing. This can contribute to the gas cylinder unthreading from the gas
cylinder valve when removing it.
Failure to follow these warnings can result in serious personal injury or death.
This manual provides steps for desktop and wall mounting. The following sections describe the proper installation for
various GALAXY GX2 configurations:
lConnect Units in a Bank (Test Stands and Cylinder Holders) [àchapter3.1 ]
lConnect a Test Gas Source Without a Cylinder Holder (optional) [àchapter3.2 ]
lNetwork Test Stands (optional) [àchapter3.3 ]
lRemoving Gas Seal for Certain ALTAIR and ALTAIR Pro Instruments [àchapter3.4 ]
lDesktop Mounting [àchapter3.5 ]
lWall Mounting [àchapter3.6 ]
lSD or SDHC Memory Card Option [àchapter3.7 ]
3.1 Connect Units in a Bank
1. On the left-hand side of the Test Stand, ensure all five barb fittings are in place and straightened before connecting a
Cylinder Holder or another Test Stand.
2. Once the barb fittings and connectors are fully aligned, firmly push the two units together until the screw holes in the
flange align.
3. Insert one of the supplied screws into the front and two screws into the back of the flange.

3 Installation
US Galaxy® GX2 17
4. If connecting multiple Test Stands, remove the white gas plugs [àFigure 3 ] from all units except the farthest right
Test Stand. If using ammonia or chlorine test gas, read the restriction found under chapter2.7 Special Conditions for
Use with Reactive Gases regarding the white plugs.
5. Continue adding Test Stands to the right and Cylinder Holders to the left [àFigure 8 ].
When connecting two or more Test Stands ensure the white plugs are secured on the right side of the farthest
right unit to prevent gas leakage.
3.2 Connect a Test Gas Source Without a Cylinder Holder
If high-pressure, high-capacity test gas cylinders are preferred, an optional demand regulator (p\n710289) is available for
cylinders with pressure less than (<) 3000 psi. Testing from an independent gas source will require additional setup effort,
as described in the Cylinder Configuration section [àchapter4.7 ].
1. On the left-hand side of the Test Stand, ensure all five barb fittings are in place and straightened.
2. Place the user-supplied regulator onto the gas cylinder and secure a length of tubing onto its outlet.
3. Securely fit the end of the tubing over the appropriate barb fitting on the GALAXYGX2 CylinderHolder.
3.3 Network Test Stands
Test Stands that are banked together should be connected through the provided Ethernet cable. The Master Test Stand is
the one located on the furthest right of the bank.
1. Insert the short Ethernet cable into the left side jack of each Test Stand (1) and connect it to the right side jack of the
neighboring unit (2) [àFigure 9 ].
One interconnect Ethernet cable is included with each Test Stand.
Figure 9 Test Stand Ethernet connections

18 Galaxy® GX2 US
3 Installation
1 Master Test Stand 3 Test Stand to Test Stand port
2 MSA Grid account networking port
2. If connecting the bank to your MSA Grid account, use a customer--supplied Ethernet cable and connect via the
Master Test Stand Ethernet port #1 shown above.
3. If not connecting to either a network connection or a PC the interconnecting Ethernetcable must be inserted into
port1 on the Master Test Stand.
3.4 Removing Gas Seal for Certain ALTAIR and ALTAIR Pro Instruments
All ALTAIR/ALTAIR Pro Test Stands will be shipped with a black rubber base seal and a green rubber gas seal. The green
seal is used only for ALTAIR H2S and ALTAIR CO instruments. The seal should be removed and stored for ALTAIR
O2and all ALTAIR Pro instruments.
Figure 10 Altair and Altair Pro Inlet Seals
3.5 Desktop Mounting
1. Place the GALAXY GX2 System on a flat, stable surface.
2. Insert the power supply into the power jack [see chapter4.1 for first-time power up initialization].
The Test Stand display pivots for ease of viewing.

3 Installation
US Galaxy® GX2 19
3. If using the Electronic Cylinder Holder the clear light band should illuminate once step2 is complete. If illumination
does not occur firmly push the units together to ensure the connectors are fully seated.
4. If using MSA Cylinder Holders, the left most Cylinder Holder should have a fresh air filter attached to the top port.
5. If not using MSA Cylinder Holders, the left most Test Stand should have a fresh air filter -attached to the top port.
6. Ensure the white plugs are inserted into the five gas connection fittings on the right side of the farthest right test
stand.

20 Galaxy® GX2 US
3 Installation
3.6 Wall Mounting
When wall mounting the Test Stand (and applicable Cylinder Holder), MSA recommends steps
1-5 from the Desktop Mounting section [àchapter3.5 ] above be completed prior to installing on the DIN Rail. For a large
configuration of Test Stands and Cylinder Holders, MSA recommends several people be used for installing or uninstalling
from the DIN rail.
1. Complete steps 1-5.
2. Secure the optional DIN rail Clips to the rear of the GALAXYGX2 System, using the included screws.
3. Mount the DIN rail (Type DIN EN 50 022 Rail 1m x 35mm x 7.5mm) to the wall by securing it with wall anchors or
other suitable fasteners.
4. Align the bottom of the DIN rail clips on the lower edge of the wall-mounted DIN rail and snap the upper part of the
clip into place.
5. To remove from the DIN rail, pull the top of the clip forward to release from the top rail and push down on the unit to
remove from the lower edge of the rail.
3.7 SD or SDHC Memory Card Option
The Test Stand can accommodate an SD or SDHC memory card, inserted in the port on the right hand side of the farthest
right Test Stand.