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MSA Altair 5X Gas Detector up to 6 gases



Option up to 6 gases in gas listed below:

  • MSA Altair 5X detect LEL
  • MSA Altair 5X detect O2
  • MSA Altair 5X detect CO
  • MSA Altair 5X detect H2S
  • MSA Altair 5X detect SO2
  • MSA Altair 5X detect Cl2
  • MSA Altair 5X detect NH3
  • MSA Altair 5X detect PH3
  • MSA Altair 5X detect *HCN
  • MSA Altair 5X detect ClO2
  • MSA Altair 5X detect NO2
  • MSA Altair 5X detect CO2
  • MSA Altair 5X detect CO2
  • MSA Altair 5X detect CH4
  • MSA Altair 5X detect C3H8
  • MSA Altair 5X detect C3H8
  • MSA Altair 5X detect C4H10
  • MSA Altair 5X detect *C4H10
  • MSA Altair 5X detect TVOC (VOCs)

MSA ALTAIR 5X Gas Detector measures up to 6 gases including natural gas. Now available with a PID Detector.

The ALTAIR 5X Gas Detector is capable of measuring up to 6 gases simultaneously and is now available with integrated PID sensor for VOC detection. Driven by advanced MSA XCell® Sensor Technology,  the ALTAIR 5X Gas Detector delivers  faster response time, better stability, accuracy, longer service life, and cost savings over the life of the instrument.


  • Detects combustible gases in LEL and/or volume percentage range, oxygen, carbon monoxide, carbon dioxide, hydrogen sulfide, sulfur  dioxide, ammonia, chlorine, VOCs,  and many others depending upon sensor configuration.
  • Rugged overmolded polycarbonate housing provides unsurpassed durability, including ability to survive 10-ft. (3m) drop; IP65-certified.
  • Field-proven integral pump provides consistent gas flow, eliminating concerns of externally-attached components.
  • High performance XCell Sensors last longer:
  • Typical life greater than 4 years for combustible, O2, CO/H2S, SO2, CO/NO2 and CO (high concentration) sensors.
  • Typical life greater than 3 years for NH3 and Cl2 sensors.
  • Most sensor response and clear times <15 seconds.
  • Less calibration gas used:
  • Requires about half of test gas typically used for calibration and bump tests.
  • Rapid bump test gives results in less than 10 seconds for most common sensor configurations.
  • Span calibration time of 60 seconds for most common sensor configurations.
  • MotionAlert feature option tells others that user has become immobile.
  • InstantAlert feature provides manual alarm to alert others as to a potentially hazardous situation.
  • PID option allows for accurate, reliable VOC response with programmable reference factors.
  • Large buttons and bright display provide easy operation, even when users wear gloves.
  • Exclusive end-of-sensor warning cautions users when unit’s sensor nears end-of-life.
  • Versatile MSA Link™ Software allows users to transmit data to a computer.
  • Compatible with GALAXY® GX2 Test System and MSA Link Pro Software for fleet management.
  • Wireless bluetooth included standard.
  • Markets: Contractor, Fire Service, Industrial, Oil & Gas, Utilities
  • Applications: Combustible Detection, Toxic Detection, Oxygen Detection, Confined Space


Altair 5 Specifications

Drop test 6 feet
Housing Rugged rubberized armor
Weight 1 lb, 1.15 lb. (with IR sensor)
Dimensions (L x W x D) 6.68″ x 3.52″ x 1.95″ (rechargeable, pumped, with belt clip)
6.68″ x 3.52″ x 1.65″ (rechargeable, diffusion, no belt clip)
Audible alarm >95 dB at 1 ft
Visual alarm 2 ultra-bright LEDs
Vibrating alarm Standard
MotionAlert feature Standard
InstantAlert feature Standard
Display size 1.79″ x 1.39″ high contrast, back-lit
Display option color/monochrome
Backlight display time adjustable
Battery Rechargeable Li-ion or Alkaline
Run time 15 hrs @ room temperature, 12+ hrs for IR version @ room temperature
Charging time <= 6 hrs
temperature range
-20 ºC to +50ºC
Humidity 15 – 90% RH non-condensing
Ingress protection IP65
Data log > 200 hrs
Event log > 1000 events
Warranty 2 years under normal use conditions for LEL/O2/CO/H2S versions
Certifications CE ATEX I I 2G
Ex ia d IIC T4 –20°C to +50°C
UL Class I, Division 1, ABCDFG, Class II, Class III
CSA C22.2 No. 157 Class I, Div. 1, Groups ABCD
ANZ Ex ia s I/IIC T4 (Zone 0) -20˚C to +50˚C
IEC Ex ia d e I/IIC T4 -20˚C to +50˚C

Gases and Ranges

Gas Range Sensor type Resolution
LEL 0-100% Catalytic combustible 1% LEL
O2 0-25% Vol Electrochemical 0.1% Vol
CO 0-999 PPM Electrochemical 1 PPM
H2S 0-200 PPM Electrochemical 1 PPM
SO2 0-20 PPM Electrochemical 0.1PPM
Cl2 0-20 PPM Electrochemical 0.1PPM
NH3 0-100 PPM Electrochemical 0.5PPM
PH3 0-5 PPM Electrochemical 0.1PPM
*HCN 0-30 PPM Electrochemical 0.1PPM
ClO2 0-1 PPM Electrochemical 0.01PPM
NO2 0-20 PPM Electrochemical 0.1PPM
CO2 0-10% Vol IR 0.01% Vol
CO2 0-50% Vol IR 0.1% Vol
CH4 0-25% Vol IR 0.2% Vol
C3H8 0-100% LEL IR 1% LEL
C3H8 0-100% Vol IR 1% Vol
C4H10 0-25% Vol IR 0.1% Vol
*C4H10 0-100% Vol IR 1% Vol






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