Brand: MSA Safety

MSA ALTAIR 4XR Multigas Detector

Name: MSA ALTAIR 4XR Multigas Detector – Manual & Price Quote
Brand: MSA Safety

Description

Overview

MSA ALTAIR 4XR is a portable multigas detector engineered as the toughest 4-gas monitor on the market, built around rapid-response MSA XCell® sensors that sense gas roughly two times faster than the industry average. Configured to simultaneously monitor combustible gases via Lower Explosive Limit (LEL), oxygen (O2), hydrogen sulfide (H2S), and carbon monoxide (CO), the MSA ALTAIR 4XR is designed for confined space entry, industrial safety programs, and hazardous atmosphere monitoring, and is backed by a 4-year manufacturer warranty.

Backed by manufacturer datasheet documentation, Seven Star LLC proudly supplies the MSA ALTAIR 4XR multigas detector to industrial, oil and gas, and utility customers across Oman and the wider GCC. Every MSA ALTAIR 4XR supplied through Seven Star LLC comes with manufacturer documentation and access to local technical support – giving safety managers and procurement teams in Muscat, Sohar, and Salalah support with selection before ordering.

Working Principle

The MSA ALTAIR 4XR uses electrochemical and catalytic bead sensing elements housed in plug-and-play MSA XCell sensor modules, each built around application-specific integrated circuit (ASIC) technology that gives greater control and higher performance than conventional sensor designs. Combustible gas concentration is measured via the LEL sensor, while dedicated electrochemical cells independently monitor oxygen, hydrogen sulfide, and carbon monoxide levels, virtually eliminating cross-channel interference between the four measured gases.

This sensor architecture gives the MSA ALTAIR 4XR its defining speed advantage: because XCell sensors respond roughly twice as fast as the industry average, the detector reaches a stable reading sooner after gas exposure begins, giving workers earlier warning in fast-developing atmospheres. Bump testing and calibration can be completed with half the test gas and in half the time compared with typical detectors, reducing both operating cost and time spent out of service for routine verification.

Engineering Design of the MSA ALTAIR 4XR

The MSA ALTAIR 4XR is housed in a rugged, over-molded rubber-armored case measuring 4.4 in. x 3.0 in. x 1.4 in. (11.2 x 7.6 x 3.5 cm) and weighing just 8 oz (228 g), engineered for genuine one-hand operation in the field. The instrument is certified to IP68 for dust and water ingress protection, capable of immersion in up to 6.5 ft (2 m) of water for one hour, and has been verified to survive an incidental 25-ft (7.6 m) drop onto concrete in addition to exceeding MIL-STD-810G repeated drop test requirements.

A rechargeable lithium-polymer battery delivers a 24-hour runtime, and the detector records more than 500 alarm events and over 50 hours of data, including bump and calibration history, for full-time traceability. The MSA ALTAIR 4XR pairs with the MSA GALAXY® GX2 Automated Test System for scheduled, automated bump testing and calibration at a specified time of day, and supports MSA Link Pro and MSA Link software for fleet data management, configuration, and compliance reporting.

Key Features

The MSA ALTAIR 4XR combines rapid sensor response with rugged field durability, and this combination is exactly why the MSA ALTAIR 4XR has become a benchmark instrument for portable multigas monitoring.

Rapid-response MSA XCell sensors detect gas roughly two times faster than the industry average.
Simultaneous monitoring of LEL, O2, H2S, and CO with virtually no cross-channel interference.
IP68-rated, over-molded rubber case survives an incidental 25-ft drop onto concrete and MIL-STD-810G testing.
Bump testing and calibration require half the test gas and half the time versus industry-standard detectors.
A 24-hour rechargeable Li-polymer battery supports full-shift operation without recharging.
Full-time traceability logs over 500 alarm events and 50+ hours of bump and calibration data.
MotionAlert (man-down) and InstantAlert (manual alarm) features notify others of a worker in distress.
Compatible with the MSA GALAXY GX2 Automated Test System for scheduled, hands-free bump testing and calibration.

Industrial Applications

The MSA ALTAIR 4XR is deployed across confined space entry programs, oil and gas facilities, utilities, mining operations, and general industrial safety programs wherever workers face potential exposure to combustible gases, oxygen deficiency or enrichment, hydrogen sulfide, or carbon monoxide. Typical duties include pre-entry atmospheric testing, continuous confined space monitoring, and personal gas monitoring during plant maintenance and turnaround activities.

Working closely with plant engineers in the region, Seven Star LLC distributes the MSA ALTAIR 4XR to refineries, petrochemical complexes, and industrial facilities throughout Oman and the GCC. The detector is a strong fit for confined space and hazardous atmosphere programs across the Sohar and Salalah industrial zones, as well as for oil and gas, utility, and manufacturing operations across Muscat that require dependable, fast-responding personal gas detection.

Technical Specifications

The table below summarizes the core specifications of the MSA ALTAIR 4XR multigas detector as supplied by Seven Star LLC.

Parameter	Specification
Model	MSA ALTAIR 4XR
Gases Detected	LEL (combustible), O2, H2S, CO (SO2/NO2 configurable)
Sensor Technology	MSA XCell rapid-response sensors (ASIC-based)
Dimensions	4.4 x 3.0 x 1.4 in. (11.2 x 7.6 x 3.5 cm)
Weight	8 oz (228 g)
Ingress Protection	IP68 (dust/water; 2 m immersion, 1 hour)
Drop Rating	25-ft (7.6 m) incidental drop onto concrete; MIL-STD-810G
Operating Temperature	-40°F to +140°F (-40°C to +60°C)
Battery	Rechargeable Li-polymer, 24-hour runtime
Data Logging	500+ alarm events, 50+ hours of data
Compatible Systems	MSA GALAXY GX2 Automated Test System, MSA Link Pro/Link software
Warranty	4-year manufacturer warranty

Request a Quote for MSA ALTAIR 4XR Multigas Detector

Seven Star LLC supports the full procurement cycle for the MSA ALTAIR 4XR multigas detector, from formal RFQ submission to confirmation of availability and lead time, technical datasheet delivery, and direct consultation with our instrumentation division on sensor configuration, calibration gas, and fleet management setup for your site. With fast quotation turnaround and technical support, we supply every MSA ALTAIR 4XR with manufacturer documentation and local technical support. Contact Seven Star LLC today to request a quotation or discuss your gas detection requirements.

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About brand

MSA Safety is an American maker of safety equipment, founded in 1914 in Pittsburgh by mining engineers John T. Ryan and George H. Deike as Mine Safety Appliances Company, after a series of deadly mine disasters. It first supplied miners with electric cap lamps and breathing apparatus. MSA is headquartered in Cranberry Township, Pennsylvania, and listed on the New York Stock Exchange.

Seven Star LLC supplies MSA gas detectors and accessories in Oman, covering both sides of the product line: ALTAIR portable detectors worn by technicians, and fixed gas monitors such as the ULTIMA X5000 and General Monitors S5000 that feed a fire and gas system.

MSA Safety company profile

Founded	1914, Pittsburgh, Pennsylvania, USA
Founders	John T. Ryan and George H. Deike
Original name	Mine Safety Appliances Company
Headquarters	Cranberry Township, Pennsylvania
Listing	New York Stock Exchange (MSA)
Product families	ALTAIR 4XR and ALTAIR io portable gas detectors, ULTIMA X5000 and General Monitors fixed gas and flame detection, G1 SCBA, V-Gard helmets, V-Series and V-FORM fall protection harnesses and lifelines

MSA gas detection families listed here

On the portable side, the ALTAIR 4XR is the four-gas detector for combustible gas, oxygen, carbon monoxide and hydrogen sulfide, and the ALTAIR io4 is the connected version that reports readings to a cloud platform. The GALAXY GX2 automated test system handles bump tests and calibration records for ALTAIR instruments.

On the fixed side, the ULTIMA X5000 and General Monitors S5000 are transmitters for combustible, toxic and oxygen sensors. Many installed units still carry the General Monitors name on the nameplate. The Chillgard 5000 is a refrigerant leak monitor for machinery rooms. Small consumables are listed too, such as window cleaning solution 10272-1.

Where MSA gas monitors are used

Fixed MSA gas monitors are found on wellheads, gas plants, refineries, tank farms, LNG and petrochemical units, wherever hydrocarbon or H2S leaks must be alarmed early. Portable ALTAIR detectors go with crews into confined spaces and on hot work permits. Chillgard monitors serve chiller plant rooms in district cooling and large buildings, a common application in the GCC.

MSA Safety products we list

Family	Examples
Fire & Gas Detectors	MSA ALTAIR 4XR Multigas Detector, MSA ALTAIR io4 Connected Multi-Gas Detec…, MSA General Monitors S5000 Gas Monitor, Window Cleaning Solution 10272-1, MSA Ultima X5000 Gas Monitor
Gas Analyzer Systems	MSA Chillgard 5000 Refrigerant Monitor
Gas Analyzer Accessories	MSA GALAXY GX2 Automated Test System

Ordering MSA detectors and sensors: what we need

Fixed gas monitors are configured items. Send the full part number or the configuration code from the nameplate, the target gas and range, the sensor technology (catalytic, infrared, electrochemical), the housing material, the output (4-20 mA with HART, optional relays) and the hazardous area approval required. For portables, state the sensor combination, charger type and regional version. For replacement sensors, a nameplate photo of the transmitter avoids mistakes. We check each code against MSA documentation and propose the manufacturer's current model when an older one is no longer made.

Facts checked against MSA Safety's corporate history and investor materials, October 2026.

Browse MSA Safety products by category: Fire & Gas Detector, Gas Analyzer Accessories, Fire & Gas Systems, Gas Analyzer Systems.

FAQ

Questions about the MSA ALTAIR 4XR Multigas Detector

Answers from our engineering team on installation, compatibility and integration.

01Which four gases does the MSA ALTAIR 4XR detect?

The MSA ALTAIR 4XR simultaneously monitors combustible gases via Lower Explosive Limit (LEL), oxygen (O2), hydrogen sulfide (H2S), and carbon monoxide (CO), with configurations for SO2 or NO2 also available depending on the sensor setup ordered.

02How durable is the MSA ALTAIR 4XR in the field?

The detector is IP68 rated for dust and water ingress, capable of 2 m water immersion for one hour, and has been verified to survive an incidental 25-ft (7.6 m) drop onto concrete in addition to exceeding MIL-STD-810G repeated drop test requirements.

03How long does the MSA ALTAIR 4XR battery last?

The rechargeable lithium-polymer battery provides a 24-hour runtime, supporting a full work shift of continuous gas monitoring before recharging is required.

04Can the MSA ALTAIR 4XR be automatically bump tested and calibrated?

Yes. The ALTAIR 4XR is compatible with the MSA GALAXY GX2 Automated Test System, which can bump test and calibrate the detector at a specified time of day using half the test gas and half the time of typical manual procedures.

05Is Seven Star LLC an experienced supply partner for MSA Safety products?

Yes, Seven Star LLC is an experienced supplier of MSA Safety in Oman and the GCC. We supply MSA Safety instrumentation on request with local technical support.