- Automation & ControlView all 2,317 products
- Automation Accessories
- AC Drives
- PLC & I/O Cards
- Industrial Communications
- Vibration Monitoring
- Controllers & Data Acquisition
- Isolator & Barrier
- CCTV & Security
- Safety Switches & Guard Locking
- Encoders
- Motor Soft Starters
- HMI Displays
- Pneumatic Cylinders
- Servo Drives
- Industrial Computers
- Machine Vision
- Automation Software
- Robotics
Brand: MSA Safety
MSA ALTAIR 2X One- and Two-Gas Detector (2X, 2XP, 2XT)
Description
MSA ALTAIR 2X one- and two-gas detector explained
The MSA ALTAIR 2X is a compact personal gas detector family that uses XCell sensors to monitor one toxic gas or, in the 2XT version, two gases together. It is made in three forms: the ALTAIR 2X single-gas detector, the ALTAIR 2XP with XCell Pulse technology for H2S, and the ALTAIR 2XT two-tox detector. Seven Star LLC is an independent supplier in Muscat and supplies ALTAIR 2X units, spares and calibration items in Oman and the GCC; we are not affiliated with the manufacturer.
Because each ALTAIR 2X is ordered by gas, the useful way to specify one is to choose the sensor and alarm pair from the list below and then add accessories. This page decodes the model names and part numbers listed in the manufacturer catalogue.
ALTAIR 2X technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer / part number | MSA / ALTAIR 2X family (2X single-gas, 2XP pulse, 2XT two-tox) |
| Sensor technology | XCell electrochemical sensors; expected sensor life above 4 years |
| Warranty | 3 years on instrument and most sensors; 2 years on Cl2 and NH3 |
| Ingress protection | Agency-certified dust- and water-tight, IP67 |
| Durability | Over-molded rubber armor; survives multiple 25 ft drops onto concrete |
| Safety design | Intrinsically safe |
| Event log | 75 alarm events |
| Data log | More than 150 hours of periodic data (2X, 2XP); more than 100 hours (2XT) |
| Bump test indication | Green LED flash every 15 s and on-screen checkmark on pass; red flash every 15 s on fail or expiry |
| Test and fleet systems | Compatible with GALAXY GX2 automated test system and MSA Grid |
| Special feature (2XP only) | Stand-alone bump test without calibration gas, based on XCell Pulse technology |
ALTAIR 2X model and part-number table
The charcoal-housing versions listed by the manufacturer are shown below. Alarm values in brackets are the factory alarm set points for each gas.
| Part number | Model | Gas and alarm points |
|---|---|---|
| 10153986 | 2X | CO (25, 100 ppm) |
| 10154075 | 2X | CO-HC high concentration (25, 100) |
| 10154074 | 2X | CO-H2 hydrogen resistant (25, 100) |
| 10162042 | 2X | H2S standard |
| 10154076 | 2X | H2S-LC low concentration (5, 10) |
| 10154077 | 2X | SO2 (2, 5) |
| 10154078 | 2X | NO2 (2.5, 5) |
| 10154079 | 2X | NH3 (25, 50) |
| 10154080 | 2X | Cl2 (0.5, 1) |
| 10153984 | 2XP | H2S-PULSE (10, 15) |
| 10154040 | 2XT | CO / H2S (CO 25, 100; H2S 10, 15) |
| 10154071 | 2XT | CO-H2 / H2S |
| 10154073 | 2XT | CO / NO2 (CO 25, 100; NO2 2.5, 5) |
| 10153985 | 2XT | SO2 / H2S-LC (SO2 2, 5; H2S 10, 15) |
Glow-in-the-dark housings were also offered; the manufacturer page marks several of those as discontinued or while supplies last, so confirm availability when you request a quotation.
How the ALTAIR 2XP stand-alone bump test works
On most detectors a daily bump test needs a gas cylinder, regulator and tubing. The ALTAIR 2XP (part 10153984) uses XCell Pulse technology to perform the bump test from the sensor itself, so it can be done anywhere without bottled gas. A pass is shown by a green LED flash every 15 seconds and a large checkmark; a fail or an expired test shows a red flash every 15 seconds and no checkmark. For H2S crews that work far from a gas store, this removes a common reason for skipped checks, although periodic calibration is still required under your own gas-safety procedure.
Where the ALTAIR 2X fits among MSA portable detectors
The ALTAIR 2X is the entry point for personal protection against a named toxic gas. For combustible and oxygen channels and a pump, the manufacturer offers the ALTAIR 4XR and ALTAIR 5X, and for connected fleets it offers the ALTAIR io family. The GALAXY GX2 automated test system can test and calibrate ALTAIR 2X detectors together with those multigas models, so one test stand can serve a mixed fleet. MSA Grid adds fleet records for sites that want digital traceability.
ALTAIR 2X selection checklist
- Choose the gas and sensor type: standard H2S or low-concentration H2S-LC, standard CO, high-concentration CO-HC or hydrogen-resistant CO-H2.
- Choose single (2X), pulse (2XP) or two-gas (2XT) form.
- Check the factory alarm points against site limits; most pairs are listed above.
- Plan calibration gas and regulator for the chosen sensor, or a GALAXY GX2 stand for larger fleets.
- Note the shorter 2-year warranty on chlorine and ammonia sensors.
- Pick a housing colour; charcoal is the standard listed version.
Use and maintenance of the ALTAIR 2X
Check the checkmark or LED indicator at the start of each shift, treat a red flash as a stop-work signal until the unit is bumped or calibrated, and download the 75-event alarm history after incidents. The detector warns the user when a sensor nears end of life, so replacements can be planned instead of discovered during a permit check. Store units clean and dry, wipe the sensor inlet gently and keep spare units for rotation when calibrations are due.
Typical ALTAIR 2X applications in Oman and the GCC
In Oman and the GCC, ALTAIR 2X units are issued to operators on oil and gas wellpads and process units for H2S, to water and desalination staff for chlorine, to refrigeration and ammonia plant crews, to power-station and petrochemical technicians for CO and SO2, and to contractors during turnarounds. The IP67 body copes with dust, spray and rough handling.
Information to send with an ALTAIR 2X RFQ
- Gas or gas pair and sensor type
- Part number or model form (2X, 2XP, 2XT)
- Required alarm set points
- Quantity and housing colour
- Calibration gas, regulator or GALAXY GX2 needs
- Delivery location and date
Storage, handling and spares for the MSA ALTAIR 2X
Store the MSA ALTAIR 2X and its sensors as described in the manufacturer instructions, in a clean, dry place within the stated temperature range. Some gas sensors have a limited shelf life, so plan deliveries close to the installation date. In Oman and the GCC, avoid storing detectors and calibration gas in hot containers or in direct sun.
- Bump test or calibrate the detector with certified test gas at the interval set by your site safety procedure.
- Check hazardous area certificates and markings against the zone classification before installation.
- Keep spare sensors, filters and calibration gas for planned maintenance.
- Record test and calibration results for each detector tag number.
When you send an RFQ for the MSA ALTAIR 2X, include the target gases, ranges, area classification and any calibration kit you need, so the full scope can be quoted together.
Documents and quotation
Send the model or part number from the table above and we will confirm which documents are available for it. Please state the target gas and alarm points in your message.
Seven Star LLC prepares quotations for the ALTAIR 2X family in Oman and the GCC as an independent supplier, with delivery arranged to your site.
Other Models in the Msa Altair Portable Range
Seven Star LLC supplies models from the Msa Altair Portable range in Oman and the GCC. Compare the related models below and request a quote for the one that matches your application.
| Model | Category | |
|---|---|---|
| MSA ALTAIR 5X Pumped Multigas Detector (up to 6 gases) | Fire & Gas Detectors | View details |
| MSA ALTAIR Pro Single-Gas Detector (O2, HCN, ClO2, PH3) | Fire & Gas Detectors | View details |
| MSA ALTAIR 2X One- and Two-Gas Detector (2X, 2XP, 2XT) | Fire & Gas Detectors | You are viewing this model |
Reviews (0)
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
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 2X One- and Two-Gas Detector (2X, 2XP,
Answers from our engineering team on installation, compatibility and integration.
01What is the difference between the ALTAIR 2X, 2XP and 2XT?
The 2X monitors one gas, the 2XP is an H2S model with XCell Pulse technology for stand-alone bump tests, and the 2XT monitors two gases at once, such as CO and H2S, with one sensor pair.
02Can the ALTAIR 2XP be bump tested without gas?
Yes. XCell Pulse technology performs a stand-alone bump test without calibration accessories or a specific test gas. A green LED flash every 15 seconds and a checkmark show a pass.
03How rugged is the ALTAIR 2X?
It has over-molded rubber armor, IP67 dust- and water-tight construction and is described as surviving multiple 25 ft drops onto concrete. It is also intrinsically safe by design.
04How much data does the ALTAIR 2X store?
It records 75 alarm events and more than 150 hours of periodic data on the 2X and 2XP. The two-gas 2XT stores more than 100 hours of periodic data.
05What warranty does the ALTAIR 2X have?
The manufacturer lists a 3-year warranty on the instrument and most sensors, and 2 years on the chlorine and ammonia sensors. Always check the terms that apply to your purchase.
Reviews
There are no reviews yet.