MSA ALTAIR 2X Single-Gas and Two-Tox Detectors
Every MSA ALTAIR 2X listing we stock, with its price and add to cart: 9 listings, 9 part numbers; the MSA ALTAIR 2X family: the 2X single-gas detector, the 2XP with XCell Pulse Technology (a stand-alone bump test with no bottled gas) and the 2XT two-tox detector, 4 oz with clip, IP67, a 25 ft drop test and a 3-year warranty, as the MSA bulletin lists them. Figures below are as published by the manufacturer. Ships in 1–2 business days; most orders arrive in 3–7 business days.
Monitors by part number (9)
| Part number | Item | Gases | Sampling | Version / kit | Price | ||
|---|---|---|---|---|---|---|---|
 | 10153985 | MSA 10153985 ALTAIR 2X 2-Gas Monitor, H2S/SO2, 2XT | H2S/SO2 | Diffusion | 2XT · charcoal | $836.00 | |
 | 10154040 | MSA 10154040 ALTAIR 2X 2-Gas Monitor, H2S/CO, 2XT | H2S/CO | Diffusion | 2XT · charcoal | $836.00 | |
 | 10154073 | MSA 10154073 ALTAIR 2X 2-Gas Monitor, CO/NO2, 2XT | CO/NO2 | Diffusion | 2XT · charcoal | $836.00 | |
 | 10153984 | MSA 10153984 ALTAIR 2X H2S Monitor, 10/15 ppm Alarms, 2XP | H2S | Diffusion | 2XP · charcoal | $716.30 | |
 | 10153986 | MSA 10153986 ALTAIR 2X Portable CO Monitor, 25/100 ppm Alarms, 2X | CO | Diffusion | 2X · charcoal | $635.55 | |
 | 10154077 | MSA 10154077 ALTAIR 2X SO2 Detector, 2/5 ppm Alarms, 2X | SO2 | Diffusion | 2X · charcoal | $814.15 | |
 | 10154078 | MSA 10154078 ALTAIR 2X NO2 Detector, 2.5/5 ppm Alarms, 2X | NO2 | Diffusion | 2X · charcoal | $814.15 | |
 | 10154079 | MSA 10154079 ALTAIR 2X Ammonia Detector, 25/50 ppm Alarms, 2X | NH3 | Diffusion | 2X · charcoal | $1118.15 | |
 | 10154080 | MSA 10154080 ALTAIR 2X Chlorine Gas Detector, 0.5/1 ppm Alarms, 2X | Cl2 | Diffusion | 2X · charcoal | $1118.15 |
Source: Part numbers and descriptions as the manufacturer prints them; prices from the store.
ALTAIR 2X specifications
| Item | MSA data |
|---|---|
| ALTAIR 2X: Sampling | Diffusion |
| ALTAIR 2X: Size | 3.5 in L x 2.125 in W x 1.25 in D (no clip) |
| ALTAIR 2X: Weight | 4 oz (113 g) with clip |
| ALTAIR 2X: Ingress protection | IP67 |
| ALTAIR 2X: Drop test | 25 feet |
| ALTAIR 2X: Battery and run time | Replaceable lithium battery |
| ALTAIR 2X: Operating temperature | Extended range -20 °C to +50 °C; extreme range -40 °C to +60 °C |
| ALTAIR 2X: Warranty | Chassis and electronics 3 years; Cl2 and NH3 sensors 2 years; all other sensors 3 years (does not cover consumable parts) |
| ALTAIR 2X: Approvals (selector) | CSA Class I Div 1 Groups A, B, C, D; ATEX; IECEx |
Source: MSA ALTAIR 2X Gas Detectors bulletin 0802-96-MC (PDF).
ALTAIR 2X sensor ranges
| Model | Gas | Range and resolution (as printed) |
|---|---|---|
| ALTAIR 2X | carbon monoxide (CO) | 0-1999 ppm (XCell CO/H2S two-tox or single) |
| ALTAIR 2X | hydrogen sulfide (H2S) | 0-200 ppm (H2S-LC 0-100 ppm) |
| ALTAIR 2X | sulfur dioxide (SO2) | 0-20 ppm |
| ALTAIR 2X | nitrogen dioxide (NO2) | 0-50 ppm |
| ALTAIR 2X | ammonia (NH3) | 0-100 ppm |
| ALTAIR 2X | chlorine (Cl2) | 0-10 ppm |
Source: MSA ALTAIR 2X Gas Detectors bulletin 0802-96-MC (PDF).
Approvals, as MSA prints them
| Mark | As printed |
|---|---|
| ALTAIR 2X: USA | cCSAus Class I Div 1 Groups A, B, C, D; Class II Div 1 Groups E, F, G; Class III; Tamb = -40 °C to +60 °C T4; UL 913 7th Edition |
| ALTAIR 2X: Canada | CSA 22.2 No. 157 |
| ALTAIR 2X: ATEX | FTZU II 2G Ex ia IIC T4 Gb, -40 °C to +60 °C |
| ALTAIR 2X: IEC / Australia / New Zealand | FTZU Ex ia IIC T4 Gb, -40 °C to +60 °C |
Source: MSA ALTAIR 2X Gas Detectors bulletin 0802-96-MC (PDF). The label on the instrument governs.
ALTAIR 2X documents
- Bulletin: ALTAIR 2X Gas Detectors (PDF)
- Technical Bulletin: ALTAIR 2X, 4XR & 5X Gas Detectors & ALTAIR io 4 Gas Detection Wearable & ALTAIR io 6 Multigas Detector Electrochemical Sensor Cross-Sensitivity Data (PDF)
- Technical Bulletin: Sensor Talks LEL Sensors (PDF)
- Technical Brief: MSA XCell Pulse Technology Detectors; Stand-Alone Bump Testing (PDF)
- Technical Brief: MSA XCell Pulse Technology; Flow Check - Exhalation Test (PDF)
- Technical Brief: MSA XCell Two - Tox Sensors (PDF)
- Technical Brief: MSA XCell Pulse Technology; Pulse Check (PDF)
- Technical Bulletin: XCell Sensors (PDF)
- CSA: ALTAIR 2X (PDF)
Source: MSA product pages, fetched Nov 10 2026.
Guides: bump test vs calibration · how to read a gas monitor alarm · what Class I Div 1 means · ATEX vs intrinsically safe · sensor life · gas detection records · every gas monitor by gas, sampling and battery.
MSA ALTAIR 2X Single-Gas and Two-Tox Detectors questions
Which ALTAIR 2X listings do you stock? 10153985, 10154040, 10154073, 10153984, 10153986, 10154077, 10154078, 10154079, 10154080.
Where do the figures on this page come from? From the MSA product pages and documents fetched Nov 10 2026 and the MSA bulletins and 2026-2027 catalog; each product page cites its source under every table.
How do I pick the right part number? Open the product page: it lists the gases, kit contents, fits and alarm set points as the manufacturer prints them, with the related part numbers in the same family.
Do you ship nationwide? Yes. Ships in 1–2 business days; most orders arrive in 3–7 business days.