MSA ALTAIR 5X User manual

Operating Manual
Altair® 5X Multigas Detector
Altair® 5XiR Multigas Detector
Order No.: 10116951/09
Print Spec: 10000005389 (EO)
CR: 800000056790
MSAsafety.com
GB

© MSA 2015, 2017, 2020, 2022. All rights reserved
WARNING!
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.
For countries of Russian Federation, Republic of Kazakhstan and Republic of Belarus, the gas detector will be delivered with a
passport document that includes valid approval information. On the CD with manual instruction attached to the gas detector the
user will find the documents "Type Description" and "Test Method" - appendixes to Pattern Approval Certificate of Measuring
instrument, valid in the countries of use.
The Declaration of Conformity can be found under the following link: https://MSAsafety.com/DoC.
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.
This product incorporates Bluetooth® wireless technology. The Bluetooth word mark and logos are registered trademarks
owned by Bluetooth SIG, Inc., and any use of such marks by MSA is under license. Other trademarks and trade names are
those of their respective owners. Versions of this product manufactured July 2022 and later may not contain Bluetooth wireless
technology. This will be indicated by the front case of the detector not utilizing a Bluetooth logo. All references in this manual to
Bluetooth will not pertain to these versions of the device.
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.
You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment.
English:
This device complies with RSS-210 of the Industry Canada 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.
French:
Ce dispositif est conforme à la norme CNR-210 d'Industrie Canada applicable aux appareils radio exempts de licence. Son
fonctionnement est sujet aux deux conditions suivantes: (1) le dispositif ne doit pas produire de brouillage préjudiciable, et (2)
ce dispositif doit accepter tout brouillage reçu, y compris un brouillage susceptible de provoquer un fonctionnement
indésirable.
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

GB Altair 5X / Altair 5XiR 3
Contents
1 Calibration Certification and Conformance 5
1.1 Calibration Certification 5
1.2 Conformance Statement 5
2 Safety Regulations 5
2.1 Correct Use 5
2.2 Liability Information 6
2.3 Safety and Precautionary Measures 6
2.4 Warranty 8
3 Description 9
3.1 Overview 9
3.2 Device Hardware Interfaces 9
3.3 Alarms 11
3.4 On-Screen Indicators 12
3.5 Viewing Additional Pages 14
3.6 Sensor Missing Alarm 18
3.7 Monitoring Toxic Gases 18
3.8 Monitoring Oxygen Concentration 19
3.9 Monitoring Combustible Gases 19
3.10 Gas Exposure of 100%LEL 20
4 Operation 20
4.1 Environmental Factors 20
4.2 Turning ON and Fresh Air Setup 21
4.3 Special Consideration for Oxygen Sensor 23
4.4 Measurement Mode [Normal Operation] 23
4.5 Device Setup 23
4.6 Bluetooth Operation 30
4.7 MSA Link Operation 31
4.8 Function Tests on the Device 31
4.9 Bump Test 31
4.10 Calibration 33
4.11 Time of Day Testing 36
4.12 Device Shutdown 36
5 Maintenance 37
5.1 Troubleshooting 37
5.2 Verifying Pump Operation 38
5.3 Replacing the Battery 38
5.4 Maintenance Procedure - Replacing or Adding a Sensor 39
5.5 Replacing the Pump Filter 41
5.6 Cleaning the Device Exterior 41
5.7 Storage 41
5.8 Shipment 41
6 Technical Specifications 42
6.1 Factory-set Alarm Thresholds and Setpoints 43
6.2 Performance Specifications 43
6.3 Calibration Specifications 45
6.4 Combustible Gas Cross Reference Factors for General-Purpose Calibration Using Calibration Cylinder (P/N
10053022) 46
7 XCell Sensor Patents 47

4 Altair 5X / Altair 5XiR GB
8 Ordering Information 48
8.1 US 48
8.2 Outside US 49
8.3 Accessories 49
8.4 Replacement Parts 51
9 Flow Charts 53
9.1 Basic Operation 53
9.2 Bump Test/ Informational Pages 54
9.3 Calibrations 56
9.4 Setup 57
9.5 Calibration Options 58
9.6 Alarm Options 59
9.7 Sensor Alarm Setup 60
9.8 Instrument Options 61
9.9 Sensor Setup 63
10 Changeable Feature Summary 64

1 Calibration Certification and Conformance
GB Altair 5X / Altair 5XiR 5
1 Calibration Certification and Conformance
1.1 Calibration Certification
All applicable inspections, testing, and calibrations were performed using NIST traceable equipment, where available, in
accordance with MSA's ISO 9001 Certified Quality System. Each material, component, and/or instrument must be
installed, operated and maintained in strict accordance with its labels, cautions, warnings, instructions, and within the
limitations stated in the supplied instruction manual. Routine calibration checks, equipment inspections, and applicable
preventative maintenance measures must be performed to verify that the materials, components, and/or instruments are
operating properly. Failure to perform these tasks on a routine basis, or suggested intervals, with specified equipment or
methods, may result in inaccurate readings.
1.2 Conformance Statement
MSA certifies that the materials, components, and/or instruments delivered in this shipment conform to all applicable
specifications. The items delivered have been processed through the appropriate approved document controlled
procedures for Receiving, Manufacturing and Inspection. The materials, components, and/or instruments were inspected,
tested, and calibrated, as applicable, per the associated drawings, standards requirements, and/or specifications, and
were deemed acceptable by appropriate authorized personnel.
2 Safety Regulations
2.1 Correct Use
The ALTAIR 5X and ALTAIR 5X IR Multigas Detectors, hereafter also referred to as device, are for use by trained and
qualified personnel. They are designed to be used when performing a hazard assessment to:
• Assess potential worker exposure to combustible and toxic gases and vapors as well as low level of oxygen.
• Determine the appropriate gas and vapor monitoring needed for a workplace.
The ALTAIR 5X Multigas Detector can be equipped to detect:
• Combustible gases and certain combustible vapors.
• Oxygen-deficient or oxygen-rich atmospheres.
• Specific toxic gases for which a sensor is installed.
• US only: While the device can detect up to 30% oxygen in ambient air, it is approved for use only up to 21% oxygen.
• Outside the US: Oxygen for monitoring inertisation applications. The device is suitable and certified for the
measurement of the oxygen concentration in gas mixtures for inertisation according to EN 50104 but without alarm
function.
The ALTAIR 5X IR Multigas Detector can also contain one infrared sensor to detect CO2or specific combustible gases up
to 100%Vol.
WARNING!
• Perform a blocked flow test before each day's use.
• It is recommended that a Bump Test is performed before each day's use, and adjust if necessary.
• Perform a Bump Test more frequently if exposed to silicone, silicates, lead-containing compounds, hydrogen sulfide,
or high contaminant levels.
• Recheck calibration if unit is subjected to physical shock.
• Use only to detect gases/vapors for which a sensor is installed.
• Do not use to detect combustible dusts or mists.
• For accurate catalytic combustible readings, make sure adequate oxygen is present (>10% O2).
• Never block pump inlet, except to perform a sampling system safety test. Have a trained and qualified person
interpret device readings. Risk of Explosion: Do not remove battery pack, recharge Li Ion battery, or replace alkaline
batteries in a hazardous location. Do not alter or modify device.

6 Altair 5X / Altair 5XiR GB
2 Safety Regulations
• Use only MSA-approved sampling lines.
• Do not use silicone tubing or sampling lines.
• Wait sufficient time for the reading; response times vary based on gas and length of sampling line.
• Do not use the device for prolonged periods in an atmosphere containing a concentration of fuel or solvent vapors
that may be greater than 10% LEL.
Failure to follow these warnings can result in serious personal injury or death.
US only: This Class A digital apparatus complies with Canadian ICES-003.
It is imperative that this operating manual be read and observed when using the product. In particular, the safety
instructions, as well as the information for the use and operation of the product, must be carefully read and observed.
Furthermore, the national regulations applicable in the user's country must be taken into account for safe use.
Alternative use, or use outside this specification will be considered as non-compliance. This also applies especially to
unauthorized alterations to the product and to commissioning work that has not been carried out by MSA or authorized
persons.
2.2 Liability Information
MSA accepts no liability in cases where the product has been used inappropriately or not as intended. The selection and
use of this product must be under the direction of a qualified safety professional who has carefully evaluated the specific
hazards of the jobsite where it will be used and who is completely familiar with the product and its limitations. The selection
and use of this product and its incorporation into the safety scheme of the jobsite is the exclusive responsibility of the
employer.
Product liability claims, warranties also as guarantees made by MSA with respect to the product are voided, if it is not used,
serviced or maintained in accordance with the instructions in this manual.
2.3 Safety and Precautionary Measures
WARNING!
Carefully review the following safety limitations and precautions before placing this device in service.
Failure to follow this warning can result in serious personal injury or death.
• Check function (→ 4.8 Function Tests on the Device) each day before use. MSA recommends carrying out a routine
inspection prior to each day's use.
• It is recommended that a Bump Test is performed → 4.9 Bump Test) before each day's use to verify proper device
operation. The device must pass the bump test. If it fails the test, perform a calibration (→ 4.10 Calibration) before
using the device.
• The ALTAIR 5X MultiGas Detectors are designed to detect gases and vapors in air only.
• If your device contains Bluetooth functionality, Bluetooth operation is dependent upon signal availability of the
wireless service(s) necessary to maintain the communication link. Loss of wireless signal will prevent communication
of alarms and other information to linked devices. Take appropriate precautions in the event a loss of wireless signal
occurs.
• Perform a Bump Test more frequently if the device is subjected to physical shock or high levels of contaminants.
Also, check calibration more frequently if the tested atmosphere contains the following materials, which may
desensitize the combustible gas sensor and reduce its readings:
○ Organic silicones
○ Silicates
○ Lead-containing compounds
○ Sulfur compound exposures over 200ppm or exposures over 50ppm for one minute.

2 Safety Regulations
GB Altair 5X / Altair 5XiR 7
• The minimum concentration of a combustible gas in air that can ignite is defined as the Lower Explosive Limit (LEL).
A combustible gas reading of XXX indicates the atmosphere is above 100%LEL, and an explosion hazard exists.
Move away from hazardous area immediately.
• Do not use the device to test for combustible or toxic gases in the following atmospheres as this may result in
erroneous readings:
○ Oxygen-deficient or oxygen-rich atmospheres
○ Reducing atmospheres
○ Furnace stacks
○ Inert environments (only IR sensors acceptable for use)
○ Atmospheres containing combustible airborne mists/dusts.
• Do not use the ALTAIR 5X and ALTAIR 5X IR Multigas Detectors to test for combustible gases in atmospheres
containing vapors from liquids with a high flash point (above 38°C, 100°F) as this may result in erroneously low
readings.
• Allow sufficient time for device to display accurate reading. Response times vary based on the type of sensor being
utilized (→6.2 Performance Specifications). Allow a minimum of 1second per foot (3seconds per meter) of sample
line to allow the sample to be drawn through the sensors.
• Sampling lines made from 0.062inch (1.57mm) inner diameter tubing provide fast transport times to the device;
however, they must be limited to 50 feet (15m) in length.
• Sampling of reactive toxic gases (Cl2, ClO2, NH3) must only be done with the reactive gas sample line and probe kits
listed in 8 Ordering Information.
• All device readings and information must be interpreted by someone trained and qualified in interpreting device
readings in relation to the specific environment, industrial practice and exposure limitations.
• Outside the US: The device is suitable and certified for the measurement of the oxygen concentration in gas mixtures
for inertisation according to EN50104 without alarm function.
Observe Proper Battery Maintenance
Use only battery chargers made available by MSA for use with this device; other chargers may damage the battery pack
and the device. Dispose of in accordance with local health and safety regulations.
Be Aware of Environmental Conditions
A number of environmental factors may affect the sensor readings, including changes in pressure, humidity and
temperature. Pressure and humidity changes also affect the amount of oxygen actually present in the atmosphere.
Be Aware of the Procedures for Handling Electrostatically Sensitive Electronics
The device contains electrostatically sensitive components. Do not open or repair the device without using appropriate
electrostatic discharge (ESD) protection. The warranty does not cover damage caused by electrostatic discharges.
NOTICE
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.
To comply with FCC RF exposure requirements MSA ensures that an approved antenna is installed per FCC ID: 7V1316.
PAN1326 is licensed to meet the regulatory requirements of Industry Canada (IC), license: IC: 216Q-1316 PAN1326
This device complies with part 15 of the FCC Rules. Operation is subject to the following conditions: (1) This device may
not cause harmful interference, and (2) this device must accept any interference received, including any interference that
may cause undesired operation.

8 Altair 5X / Altair 5XiR GB
2 Safety Regulations
WARNING!
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.
Failure to follow this warning can result in serious personal injury or death.
This Class A digital apparatus complies with Canadian ICES-003.
Be Aware of the Warranty Regulations
The warranties made by MSA The Safety Company with respect to the product are voided if the product is not used and
maintained in accordance with the instructions in this manual. Please protect yourself and others by following them. We
encourage our customers to write or call regarding this equipment prior to use or for any additional information relative to
use or service.
Be Aware of the Product Regulations
Follow all relevant national regulations applicable in the country of use.
2.4 Warranty
Item Warranty Period*
Chassis and electronics Three years
XCell COMB EX,O2, H2S, CO, SO2, NO2, and MSA IR sensors Three years
XCell Cl2, NH3sensors Two years
Series 20 ClO2, HCN, NO, NO2, PH3sensors, XCell COMB EX-H One year
In-Box Accessories including Replacements Two years
*Period begins date of received shipment.
This warranty does not cover filters, fuses, etc. As the battery pack ages, there will be a reduction in usable device run time.
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 non-operation of the goods. This exclusion is applicable to
claims for breach of warranty, tortious conduct or any other cause of action against seller.

3 Description
GB Altair 5X / Altair 5XiR 9
3 Description
3.1 Overview
Figure 1 Device view
1LEDs 2 red "Alarm", 1 green
"Safe" and 1 yellow "Fault" 8 IRDA Communication port
2 Horn 9 Pump inlet
3 Display 10 RFID tag
4
p Button 11 Filter
5
q Button 12 Belt Clip (ALTAIR 5X only)
6
q Button 13 Charging port
7 Bluetooth Status LED 14 Charge Status LED
The device monitors gases in ambient air and in the workplace.
The ALTAIR 5X is available with a maximum of four sensors, which can display readings for five separate gases (one Two-
Tox Sensor provides both CO and H2S or CO and NO2sensing capabilities in a single package).
The ALTAIR 5X IR is available with a maximum of five sensors, which can display readings for six separate gases (one
Two-Tox Sensor provides both CO and H2S or CO and NO2sensing capabilities in a single package).
The ALTAIR 5X and ALTAIR 5X IR Multigas Detectors are available with either a monochrome or color display.
The alarm levels for the individual gases are factory-set and can be changed through the Instrument Setup Menu. These
changes can also be made through MSALink Software. Ensure that the latest version of the MSALink software has been
downloaded from MSA’s website www.msasafety.com.
It is recommended that after making changes using MSA Link software, the device should be turned OFF and ON.
US only: While the device can detect up to 30% oxygen in ambient air, it is approved for use only up to 21% oxygen.
3.2 Device Hardware Interfaces
Device operation is dialog driven from the display with the aid of the three function buttons (→Figure 1 ).
The device has three buttons for user operation. Each button can function as a "soft key", as defined on the display directly
above the button.

10 Altair 5X / Altair 5XiR GB
3 Description
Button Definitions
Button Description
qThe qbutton is used to turn the device ON or OFF and to confirm user action selections.
qThe qbutton is used to page down through data screens or to decrease the values in setup mode. This
button is also used to initiate a Bump Test for the installed sensors, directly from the MEASURING page.If
the user is granted access to the MotionAlert setting feature, this button can be used to activate the
InstantAlertTM alarm.
See 4.5 Device Setup for the means to allow/disallow user access.
pThe pbutton is used to reset Peak, STEL, TWA and alarms (where possible) or perform calibration in
measuring mode. It is also used as page up or to increase the values in setup mode.
When the pbutton and the qbutton are pressed simultaneously while in normal measure mode, the Setup mode can be
entered after the password is confirmed.
LED Definitions
LED Description
RED (Alarm) The red alarm LEDs are visual indications of an alarm condition or any type of error in the
device.
GREEN (Safe) The Safe LED flashes once every 15seconds to notify the user that the device is ON and
operating under the conditions defined below:
• The green SAFE LED is enabled
• Combustible reading is 0% LEL or 0%Vol
• Oxygen (O2) reading is 20.8%
• Carbon Dioxide (CO2) reading is ≤0.03%
• All other sensor readings are 0ppm
• No gas alarms are present (low or high)
• Device is not in Low Battery warning or alarm
• STEL and TWA readings are 0ppm
This option can be turned OFF through the MSA Link software.
YELLOW (Fault) The Fault LED activates if any of several fault conditions are detected during device operation.
This includes:
• A device memory error
• A sensor determined to be missing or inoperative
• A pump fault
These faults are also indicated by activation of device alarm LEDs, horn, and vibrating alarm.
BLUE
(BluetoothStatus)
If your instrument supports Bluetooth, the blue LED is a visual indication of the Bluetooth
connection status.
• Off = Bluetooth board OFF or Undiscoverable
• Fast Flash = Discoverable Mode
• Slow Flash = Connected

3 Description
GB Altair 5X / Altair 5XiR 11
3.3 Alarms
The device is equipped with multiple alarms for increased user safety:
Icon Alarm
Vibrating Alarm The device vibrates when any alarm condition is active. This can be turned OFF
through the SETUP- ALARM OPTIONS menu (→4.5 Device Setup).
Horn The device is equipped with an audible alarm.
The horn can be turned OFF through the SETUP- ALARM OPTIONS menu (→4.5
Device Setup).
InstantAlert™ Alarm The InstantAlert exclusive feature allows the user to manually activate an audible
alarm to alert those nearby to potentially dangerous situations. Holding the qbutton
for approximately 5seconds while in Normal Measure Mode activates the
InstantAlert alarm. Access to this feature may be restricted. See 4.5 Device Setup for
means to allow/disallow user access.
MotionAlert™ Alarm If MotionAlert is turned ON (→ 4.5 Device Setup), the device activates a "Man Down"
alarm if motion is not detected within 30seconds. The Alarm LEDs flash, and the
horn activates with an increasing audible frequency. MotionAlert is always turned
OFF when the device is turned OFF.
Access to this feature may be restricted by user settings. See 4.10 Calibration for
means to allow/disallow user access.
Stealth Mode Stealth Mode disables the visual, audible and vibrating alarms. MSA recommends
that this feature be left in its default "OFF" state. Stealth mode can be turned ON
through the SETUP - INSTRUMENT OPTIONS menu (4.5 Device Setup). The
message "Alarms OFF" flashes on the monochrome display when Stealth mode is
ON. On the color display, all three alarm icons are shown as OFF.
Sensor Life Alarm The device evaluates the condition of the sensors during Calibration.
As the end of a sensor’s life approaches, a warning is provided. While the sensor is
still fully functional, the warning gives the user time to plan for a replacement sensor
to minimize downtime. The Sensor Life indicator♥ displays during ongoing
operations as a reminder of a sensor’s pending end of life.
When a sensor’s end-of-life is reached, sensor calibration will not be successful, and
the user is then alerted by a Sensor Life Alarm. A flashing Sensor Life indicator♥
displays during ongoing operations until the sensor is replaced and/or successfully
calibrated.
On the monochrome display, the Sensor Life indicator appears on the display at the
same position as the MotionAlert indicator. If MotionAlert is enabled (the +indicator
displays) and a Sensor Life warning or alarm occurs, the Sensor Life indicator♥
takes priority and is shown instead.
On the color display, each displayed gas will have its own Sensor Life indicator. If a
sensor is in end-of-life warning, its indicator will be an orange♥. If a sensor has
reached end-of-life, it is in alarm and its Sensor Life indicator will be a continuous
blinking red♥.
See4.10 Calibration for additional details on Sensor Life determination and
indication.
Backlight The backlight automatically activates when any front panel button is pressed and
remains ON for the duration of user-selected timeout.
This duration can be changed using the SETUP - INSTRUMENTSETUP(→ 4.5
Device Setup) or through MSA Link software.

12 Altair 5X / Altair 5XiR GB
3 Description
Icon Alarm
Operating Beep This operating beep activates every 30seconds by momentarily beeping the horn
and flashing the alarm LEDs under the following conditions:
• Operating beep is enabled
• Device is on normal Measure Gases page
• Device is not in battery warning
• Device is not in gas alarm.
The Operating Beep can be disabled using the SETUP - INSTRUMENT OPTIONS
(→ 4.5 Device Setup) or through MSA Link software.
3.4 On-Screen Indicators
Monochrome Display
Figure 2 Monochrome Display
1 Gas type 5 Battery condition
2 Current time 6 Successful Bump Test/Calibration Indicator
3"Soft Key"
q Indicator 7"Soft Key" p indicator
4 Gas reading
8
MotionAlert (+ = ON)
Sensor Life Indicator
Bluetooth On/Off
On a monochrome display, a message appears every 30seconds if the Vibration, Horn or LED alarms are turned OFF.
Color Display
Figure 3 Color display
1"Soft Key"
q Indicator 8 Vibration alarm OFF

3 Description
GB Altair 5X / Altair 5XiR 13
2 Gas reading 9 Horn OFF or successful Bump Test/Calibration Indicator
3 Gas Concentration Units 10 LED OFF
4 Current Time 11 Battery charge level
5 Motion Alert symbol ON 12 Gas Type
6 or Wireless USB or
Bluetooth ON 13 "Soft Key"
p Indicator
7Combustible Gas/VOC
type 14
♥
Sensor Life Indicator
Battery Charge Level Indicator
The battery condition icon continuously displays in the upper right-hand corner of the color display and in the lower right-
hand corner of the monochrome display. Abar represents the charging level of the battery.
The nominal run-time of the device (COMB, O2, CO, H2S, with pump and monochrome display) at room temperature is
20hours. Actual run-time will vary depending on ambient temperature, battery and alarm conditions.
Low Battery Warning
WARNING!
If battery warning alarm activates while using the device, leave the area immediately as the end of battery life is
approaching.
Failure to follow this warning can result in serious personal injury or death.
Figure 4 Battery Warning
The duration of remaining device operation during a LowBatteryWarning depends on ambient temperatures, battery
condition alarm status. Nominal battery life is 30-60 minutes after the BatteryWarning activates.
When the device goes into battery warning the:
• Battery life indicator continuously blinks
• Alarm sounds and alarm LEDs flash every 30seconds
• Safe LED no longer flashes
• Device continues to operate until it is turned OFF or battery shutdown occurs.
Battery Shut Down
WARNING!
If battery alarm displays, stop using the device as it no longer has enough power to indicate potential hazards, and persons
relying on this product for their safety could sustain serious personal injury or death.
The device goes into battery shutdown mode 60seconds before final shutdown (when the batteries can no longer operate
the device):
• "BATTERY ALARM” flashes on the display
• Alarm sounds

14 Altair 5X / Altair 5XiR GB
3 Description
• Alarm LEDs flash
• Fault LED is on
• No other pages can be viewed; after approximately oneminute, the device automatically turns OFF.
Figure 5 Battery Shut Down
When battery shutdown condition occurs (→ Figure 4 ):
1. Leave the area immediately.
2. Recharge or replace the battery pack.
Battery Charging
WARNING!
• Risk of explosion. Do not recharge device in hazardous area.
• Use of any charger, other than the charger supplied with the device, may damage or improperly charge the batteries.
Failure to follow these warnings can result in serious personal injury or death.
For users in Australia/ New Zealand: The charge cradle is a Class A product. In a domestic environment,
this product may cause radio interference, in which case, the user may be required to take adequate
measures.
The charger is capable of charging a completely depleted pack in less than sixhours in normal, room-temperature
environments.
NOTE: Allow very hot or cold devices to stabilize for one hour at room temperature before attempting to charge
• Minimum and maximum ambient temperature to charge the device is 10°C (50°F) and 35°C (95°F), respectively.
• For best results, charge the device at room temperature 23°C (73 °F).
To Charge the Device
• Firmly insert the charger connector into the charge port on the back of the device.
• An LED in the battery pack is used to indicate on the charge status.
Red = charging, Green = charged, yellow = fault
• If a problem is detected during charging (LED turns yellow):
Disconnect the charger momentarily to reset the charge cycle.
• The battery pack may be charged separately from the device.
• During periods of non-use, the charger may remain connected to the device/battery pack.
NOTE: The charger must be disconnected for the device to operate.
3.5 Viewing Additional Pages
The Main Screen appears at device turn-ON.
Additional displays can be viewed by pressing the qbutton to move to the screen as indicated by the "soft key".

3 Description
GB Altair 5X / Altair 5XiR 15
(For the monochromatic display the name of the page is displayed, for the color version it is represented by an icon.)
The sequence of pages are as follows and are described Figure 1 :
PEAK * MIN
STEL *
1
TWA * 1
BUMP TEST ?
DATE
LAST CAL
DATE *
CAL DUE
DATE *
MOTION
ALERT
STATUS *
WUSB **
MAIN
MEASURE
PAGE
Advance on
Advance on
Advance on
* IF ENABLED
** IF WUSB IS INSTALLED
1 NOT VALID FOR ALL SENSORS
* 1
DISCOVERY
MODE* VOC*
Figure 6 Sequence of Pages
Bump Test (BUMP page)
This page allows the user to perform an automated Bump Test on the device. To perform the test, the (YES) button is
pressed. See 4.9 Bump Test for details on performing the Bump Test.
If the qbutton is pressed, the Bump Test is not performed, and the display shows the next page in the sequence (PEAK).
If the pbutton is pressed, the Bump Test is not performed, and the display reverts back to the normal MEASURE page.
Peak Readings (PEAK page)
Monochromatic display Color display
PEAK
This page shows the highest levels of gas recorded by the device since turn-ON or since peak readings were reset.
To reset the peak readings:
1. Access the PEAK page.
2. Press the pbutton.
This page can be de-activated through MSA Link software.
Minimum Readings (MIN page)
Monochromatic display Color display
MIN

16 Altair 5X / Altair 5XiR GB
3 Description
This page shows the lowest level of oxygen recorded by the device since turn-ON or since the MIN reading was reset. It is
only shown if an oxygen sensor is installed and enabled.
To reset the MIN reading:
1. Access the MIN page.
2. Press the pbutton.
Short Term Exposure Limits (STEL page)
WARNING!
If the STEL alarm activates, leave the contaminated area immediately; the ambient gas concentration has reached the
preset STEL alarm level. Failure to follow this warning will cause over-exposure to toxic gases and persons relying on this
product for their safety could sustain serious personal injury or death.
Monochromatic display Color display
STEL
This page shows the average exposure over a 15-minute period.
When the amount of gas detected by device is greater than the STELlimit:
• Alarm sounds, alarm lights flash.
• Alarm LEDs flash
• “STEL ALARM” message flashes.
To reset the STEL:
1. Access the STEL page.
2. Press the pbutton.
The STEL alarm is calculated over a 15-minute exposure.
STEL calculation examples:
Assume the device has been running for at least 15minutes:
15minute exposure of 35ppm:
(15minutes x 35ppm) = 35ppm
15minutes
10minute exposure of 35ppm and 5minutes exposure of 15ppm:
(10minutes x 35ppm) + (5minutes x 5ppm) = 25ppm
15minutes
This page can be de-activated through MSA Link software.

3 Description
GB Altair 5X / Altair 5XiR 17
Time Weighted Average (TWA page)
WARNING!
If the TWA alarm activates, leave the contaminated area immediately; the ambient gas concentration has reached the
preset TWA alarm level. Failure to follow this warning will cause over-exposure to toxic gases and persons relying on this
product for their safety could sustain serious personal injury or death.
This page shows the average exposure over 8hours since the device was turned ON or since the TWA reading was reset.
When the amount of gas detected is greater than the eight-hour TWA limit:
Monochromatic display Color display
TWA
• Alarm sounds
• Alarm LEDs flash
• “TWA ALARM” message flashes.
To reset the TWA Readings:
1. Access the TWA page.
2. Press the pbutton.
The TWA alarm is calculated over an eight-hour exposure.
TWA calculation examples:
1hour exposure of 50ppm:
(1hour x 50ppm) + (7hours x 0ppm) = 6.25ppm
8hours
4hour exposure of 50ppm and 4hour exposure of 100ppm:
(4hours x 50ppm) + (4hours x 100ppm) = 75ppm
8hours
12hour exposure of 100ppm:
(12hours x 100ppm) = 150ppm
8hours
This page can be de-activated through MSA Link software.
Date Display
Current date appears on the display in the format: MM-DD-YY.
Last cal page
Displays the device last successful calibration date in the format: MM-DD-YY. This page can be de-activated through MSA
Link software or the SETUP - CAL OPTIONS page.
Cal due page
Displays the days until the device's next calibration is due (user selectable). This page can be de-activated through MSA
Link software or the SETUP - CAL OPTIONS page.

18 Altair 5X / Altair 5XiR GB
3 Description
Discoverable Mode page
Allows the user to put the device into Bluetooth discoverable mode in order to pair with another device. This page can be
deactivated through the SETUP - INSTRUMENT OPTIONS page.
Motion Alert Activation Page
When the MotionAlert feature is active, the +symbol appears. The device enters pre-alarm when no motion is detected for
20seconds. This condition can be cleared by moving the device. MotionAlert is turned OFF each time the device is
powered OFF. After 30seconds of no motion, the full MotionAlert alarm is triggered. This alarm can only be cleared by
pressing the pbutton. This page displays if it was selected in Setup Mode. To activate or deactivate the MotionAlert
feature, press the pbutton while the MOTIONALERT ACTIVATION page is displayed.
3.6 Sensor Missing Alarm
Enabled IR and XCell sensors are continuously monitored for proper function. If, during operation, the IR or an XCell
sensor is detected as failed or disconnected, this alarm message appears.
• "SENSOR MISSING" flashes on the display.
• The problematic sensor is indicated.
• The alarm sounds and the Fault and Alarm LEDs flash.
• The alarm can be silenced by pressing the pbutton; no other pages can be viewed.
WARNING!
When this alarm occurs, the device is inoperative for measuring gases. The user must exit the hazardous area, the device
must be powered down, and the sensor situation must be corrected.
Failure to follow this warning can result in serious personal injury or death.
3.7 Monitoring Toxic Gases
The device can monitor the concentration of a variety of toxic gases in ambient air. Which toxic gases are monitored
depends on the installed sensors.
The device displays the gas concentration in parts per million (ppm), µmol/mol or mg/m3on the Measuring page. Gas units
are selected in the SETUP - INSTRUMENT OPTIONS page.
WARNING!
If an alarm is triggered while using the device, leave the area immediately. Remaining in the area under such
circumstances can cause serious personal injury or death.
The device has four gas alarms:
• HIGH Alarm
• LOW Alarm
• STEL Alarm
• TWA Alarm
Figure 7 Alarm Conditions (here High Alarm)

3 Description
GB Altair 5X / Altair 5XiR 19
If the gas concentration reaches or exceeds the alarm set point or the STEL or TWA limits, the:
• Alarm message displays and flashes in combination with the corresponding gas concentration
• Backlight turns on
• Alarm sounds (if active)
• Alarm LEDs flash (if active)
• Vibrating alarm triggers (if active)
3.8 Monitoring Oxygen Concentration
The device monitors the oxygen concentration in ambient air. The alarm set points can be set to activate on two different
conditions:
• Enriched - oxygen concentration > 20.8% or
• Deficient - oxygen concentration < 19.5%.
WARNING!
If an alarm is triggered while using the device, leave the area immediately. Remaining in the area under such
circumstances can cause serious personal injury or death.
When the alarm set point is reached for either of the above conditions the:
• Alarm message displays and flashes in combination with the corresponding gas concentration
• Backlight turns on
• Alarm sounds (if active)
• Alarm LEDs flash (if active)
• Vibrating alarm triggers (if active)
The LOW alarm (oxygen deficient) is latching and will not automatically reset when the O2concentration rises above the
LOW set point. To reset the alarm press the pbutton. If the alarm is latching, the pbutton silences the alarm for five
seconds. Alarms can be made latching or unlatching via MSA Link software.
False oxygen alarms can occur due to changes in barometric pressure (altitude), humidity or extreme changes in ambient
temperature.
It is recommended that an oxygen calibration be performed at the temperature and pressure of use. Be sure that the device
is in known fresh air before performing a calibration.
3.9 Monitoring Combustible Gases
The device can be equipped with a catalytic combustible sensor that detects a variety of combustible gases up to 100%
LEL and displays the reading as either %LEL or %CH4. The ALTAIR 5X IR can also contain an IR combustible sensor.
The IR sensor displays the reading in %Vol or %LEL.
WARNING!
If an alarm is triggered while using the device, leave the area immediately.Remaining in the area under such
circumstances can cause serious personal injury or death.
The catalytic combustible, 25%Vol Butane IR, and 100% LEL Propane IR sensors have two alarm setpoints:
• HIGH Alarm
• LOW Alarm
If the gas concentration reaches or exceeds the alarm set point, the device:
• Alarm message displays and flashes in combination with the corresponding gas concentration:

20 Altair 5X / Altair 5XiR GB
4 Operation
• Backlight turns on
• Alarm sounds (if active)
• Alarm LEDs flash (if active)
The 100%Vol IR sensors have no alarm setpoints.
3.10 Gas Exposure of 100%LEL
When gas reading exceeds 100% of the lower explosive limit (LEL), the device enters a Lock Alarm state and displays
“XXX” in place of the actual reading.
WARNING!
A catalytic combustible gas reading of "XXX” indicates the atmosphere could be above 100% LEL or 5.00% Vol CH4 and
an explosion hazard exists. Move away from contaminated area immediately.
Failure to follow this warning can result in serious personal injury or death.
For ALTAIR 5X IR devices with an enabled 100%Vol methane IR sensor, the LockAlarm will clear, and the catalytic
combustible again displays combustible concentrations when the gas sample drops to a lower level. For devices without an
enabled 100%Vol methane IR sensor, the user can clear the LockAlarm state only by turning the device OFF, and then
ON again in a fresh air environment. When catalytic combustible gas reading digits appear, the device is available for
measuring gases once again.
LockAlarm of the catalytic combustible sensor occurs during Bump Testing and calibration of a %Vol
combustible IR sensor. After the IR sensor Bump Test, the LockAlarm must be cleared (as described
above) before the catalytic combustible sensor is again able to measure and provide readings.
NOTE: Check your national standard values for 100% LEL.
4 Operation
Device operation is dialog driven from the display with the aid of the three function buttons (→3.2 Device Hardware
Interfaces).
For more information, see the flow charts in 9 Flow Charts.
4.1 Environmental Factors
A number of environmental factors may affect the gas sensor readings, including changes in pressure, humidity and
temperature. Pressure and humidity changes affect the amount of oxygen actually present in the atmosphere.
Pressure Changes
If pressure changes rapidly (e.g., stepping through airlock), the oxygen sensor reading may temporarily shift and possibly
cause the device to go into alarm. While the percentage of oxygen may remain at or near 20.8Vol%, the total amount of
oxygen present in the atmosphere available for respiration may become a hazard if the overall pressure is reduced by a
significant degree.
Humidity Changes
If humidity changes by any significant degree (e.g., going from a dry, air conditioned environment to outdoor, moisture
laden air), oxygen readings can be reduced by up to 0.5%, due to water vapor in the air displacing oxygen.
The oxygen sensor has a special filter to reduce the effects of humidity changes on oxygen readings. This effect will not be
noticed immediately, but slowly impacts oxygenreadings over several hours.
Temperature Changes
The sensors have built-in temperature compensation. However, if temperature shifts dramatically, the sensor reading
could shift.