ALTAIR® Family Gas Detectors

Welcome to MSA’s Gas Detector Selection Page, click on the detectors to begin.

Detector Family

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MSA's ALTAIR® Family,
A Smart Solution You Can Rely On

The real strength of our Portable Gas Detectors comes from our sensor technology that enable faster response. Save seconds on response time and save lives now with MSA's range of gas detection instruments:

Single & Two Gas Detectors
ALTAIR®: Maintenance-free Single Gas Detector
ALTAIR® PRO: Durable Single Gas Detector
ALTAIR® 2X: Single Gas & Two-Gas Detector powered by MSA XCell® Sensors

Multigas Detectors
ALTAIR® 4X: Compact Multigas Detector powered by MSA XCell® Sensors. NEW ALTAIR® 4XR Available Now, Find Out More »
ALTAIR® 5X Wireless: Versatile Multigas Detector powered by MSA XCell® Sensors

System & Software
GALAXY® GX2: Easy-to-use, Automated Test System
MSA Link Pro Software: Easy and Proactive Gas Detection Fleet Management Program

With less time spent on calibration and bump tests, you save calibration gas, maintenance costs, and in turn, save money.

Single & Two-Gas

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ALTAIR®

Maintenance-free Single Gas Detector

Designed for superior lifespan—patented sensors operate for over two years—and high performance, the ALTAIR Single-Gas Detector is the smart choice for market-leading, cost-effective gas monitors. Features sensor options for carbon monoxide, hydrogen sulfide, and oxygen coupled with LED/audible/vibrating alarms. Superior dust/water protection, high RFI resistance, and one-button operation provide heightened safety, plus increased durability and ease-of-use.

  • Sensor options for CO, H2S, and O2
  • Patented electrochemical sensors and MSA-built button sensors
  • Stainless steel and solid electrolyte construction virtually eliminate sensor leakage
  • Automatically records the last 25 alarm/test events and can communicate data by connecting to MSA Link via built-in IR communication port
  • No-miss triple alarm system includes bright flashing LEDs, piercing audible alarm, and an internal vibrating alarm
  • Rubberized armor housing and one-button operation for maximum durability and simplicity
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ALTAIR® PRO

Durable Single Gas Detector

Based on the industry-standard ALTAIR® Single-Gas Detector—but with added features and functionality—ALTAIR® Pro toxic gas and oxygen detectors combine reliable detection and LED/audible/flashing/vibrating alarms with clear, backlit LCD displays. Electrochemical sensors measure concentrations of toxic gas (chlorine dioxide, hydrogen cyanide and phosphine) or percent oxygen. Purpose-built for superior dust and water protection, excellent impact resistance and excellent RFI performance.

  • Unit detects O2, ClO2, HCN and PH3
  • Gas concentration (chlorine dioxide, hydrogen cyanide and phosphine) or percent oxygen displayed on a large, clear, backlit LCD
  • Automatically records the last 50 alarm/test events while simultaneously recording peak gas readings or low O2 readings every three minutes in a periodic data log
  • User can read data or change alarm set points by connecting unit to MSA Link via built-in IR communication port
  • Adjustable alarm set points
  • No-miss quad alarm system includes bright flashing LEDs, piercing audible alarm, LCD notification, and an internal vibrating alarm
  • Rubberized armor housing and one-button operation for maximum durability and simplicity
  • Easy alarm check, bump check, fresh air zero, and calibration
  • Easily replaceable batteries and sensors
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ALTAIR® 2X

Single Gas & Two-Gas Detector powered by
MSA XCell Sensors

All ALTAIR 2X Gas Detectors

  • Incorporate proven XCell® sensor technology
  • Enhance worker safety, compliance and traceability
  • Minimize cost of ownership
  • Demonstrate rugged durability

Product Options

  • ALTAIR® 2XP Gas Detector with XCell Pulse Technology: H2S -
    • Features the first stand-alone bump test, which eliminates the need for bottled gas!
    • Bump test anytime, anywhere
    • Based on proven science and patented sensor capabilities
  • ALTAIR® 2XP Gas Detector with XCell® Pulse Technology: H2S
  • ALTAIR® 2X Gas Detectors: CO, CO-HC (High Concentration), CO-H2 (Hydrogen Resistant), H2S-LC, SO2, NO2, NH3 and Cl2
  • ALTAIR® 2XT Two-Tox Gas Detector: CO/H2S, CO-H2/H2S, CO/H2S-LC, CO/NO2 and SO2/H2S-LC

Product Highlights

  • Low cost of ownership
  • Increased safety awareness & real-time compliance
  • Full-time traceability
  • Rugged durability

Multi Gas

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ALTAIR® 4X

Compact Multigas Detector powered by
MSA XCell® Sensors

The ALTAIR® 4X is an extremely durable Multigas Detector that simultaneously measures up to four gases from a wide range of XCell® sensor options including combustible gases, O₂, CO, H₂S, SO₂ and NO₂. The ALTAIR® 4X Detector surpasses industry standards in several crucial areas. Its four-year sensor life is 60% longer than the industry average, while its 24-hour run time exceeds the industry average by 71%. This versatile portable detector is a perfect match for industries ranging from fire fighting to welding, and its digital sensor output makes it less likely to suffer from RF interference. The unit features exclusive MotionAlert™, which lets others know if the user has become immobile, and InstantAlert™, a manual alarm that alerts others of potentially dangerous situations. This rugged unit is designed to withstand a drop of up to 20 ft (6m) and uses less than half as much calibration gas as the industry average.

  • Dependable multigas detector tests for LEL, oxygen, carbon monoxide, hydrogen sulfide, sulfur dioxide and nitrogen dioxide
  • Economical construction saves users more than 50% on calibration gas, replacement sensors and maintenance
  • Four-year sensor life means detector lasts 60% longer than the industry average
  • Unit uses 50% less calibration gas per minute than the average detectors within the industry
  • Two-tox CO/H2S sensor removes practically all cross-channel interference
  • Large buttons and high-contrast screen make operation easy in low-light conditions
  • Ribbed rubber housing provides secure grip and high durability
  • Unit features 95+ db alarm and ultra-bright LEDs
  • Exclusive end-of-sensor warning cautions user when unit's sensor needs to be changed
  • MotionAlert option tells others that user has become immobile
  • InstantAlert provides manual alarm to alert others of a dangerous situation
NEW ALTAIR® 4XR Available Now, Find Out More »
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ALTAIR® 5X Wireless

Versatile Multigas Detector powered by
MSA XCell Sensors

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.

System & Software

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GALAXY® GX2

Easy-to-use, Automated Test System

Simplicity counts with the MSA GALAXY® GX2 Automated Test System for advanced safety management and effortless operation. The GALAXY® GX2 Automated Test System provides simple, intelligent testing and calibration of MSA ALTAIR® and ALTAIR® PRO Single-Gas Detectors and ALTAIR® 4X and ALTAIR® 5X Multigas Detectors. Easy-to-use automated test stand offers high performance as either stand-alone unit or integrated portable detector management system, enabling total data access and control of the MSA ALTAIR® family Gas Detector fleet. New MSA Link™ Pro Software for proactive safety management; gas exposure email alerts, direct data input, live filtering, test and exposure queries, collecting and printing reports.

  • Color touch screen for ease of setup and viewing
  • Extremely simple to use; testing starts automatically without touching a single button
  • Simultaneous testing of up to ten instruments
  • GALAXY® GX2 System is optimized for use with MSA’s XCell® Sensors; provides up to 50% cost of ownership reduction
  • At-a-glance indicators include low calibration gas volume, expiration warnings and test stand status.
  • MSA Link Pro Software provides proactive safety management, dashboard overview and total record-keeping
  • 18 languages available for test stand and MSA Link Pro Software that simplifies usage and reduces training
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MSA Link Pro Software

Easy and Proactive Gas Detection
Fleet Management Program

MSA Link Pro Software lets you easily and proactively manage your gas detection fleet. Program offers efficient setup and configuration with dashboard alerts as to all conditions, as well as calibration gas and expiration warnings. Query data, print or save reports including gas exposures incidents; system can be set up to automatically send email exposure alerts. Generate session logs, including periodic as well as calibration and GALAXY® GX2 System bank data. Program sends scheduled emails from master test stand based upon detector conditions and events. Directly input your data and filter results live.

Dashboard – Live System View
  • Single-glance notification of instruments that are overdue for calibration or bump test

Reports – View at your convenience
  • Database storage of instrument Periodic and Session data logs and customizable reports

Email Alerts – Instant alerts
  • Email notifications of GALAXY® GX2 System and instrument warnings and error messages

Fleet Management – Configure and Audit Systems
  • Configure banks, instruments and audits fleet settings

System can be set up with either static or DHCP connections, offering wide flexibility.
  • Access flexibility: administrator assigns several levels of user rights.
  • Users can access software from any computer that is directed to main database.
  • Database exists on one computer or server; multiple end user PCs can access database to use program.
  • Network can be as simple as one test stand bank, one router and one laptop computer, or have one or many test stand banks exist within a corporate intranet structure. MSA Link Pro Software operates completely within your company's firewall

Detector Selection by Gas Types

  H₂S CO O₂ ClO₂ HCN PH₃ SO₂ NO₂ Cl₂ NH₃ NO VOC Combustible
ALTAIR® x x x                    
ALTAIR® PRO     x x x x              
ALTAIR® 2X x x         x x x x      
ALTAIR® 4X x x x       x x         x
ALTAIR® 5X Wireless x x x x x x x x x x x x x

Can’t find what you are looking for? Contact us and customize your detector now.
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