MSA ALTAIR 4XR and 4X Multigas Detectors
Every MSA ALTAIR 4XR listing we stock, with its price and add to cart: 14 listings, 14 part numbers; the MSA ALTAIR 4XR: a 4-gas detector with XCell sensors, IP68, 25 ft drop protection, a 20-hour Li-polymer battery and a 4-year warranty, plus the MSHA-approved ALTAIR 4X for mining, as MSA 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 (14)
Source: Part numbers and descriptions as the manufacturer prints them; prices from the store.
ALTAIR 4XR specifications
| Item | MSA data |
|---|---|
| ALTAIR 4XR: Sampling | Diffusion |
| ALTAIR 4XR: Size | 4.4 in x 3.0 in x 1.4 in (11 cm x 7.6 cm x 3.5 cm) |
| ALTAIR 4XR: Weight | 8 oz (228 g) |
| ALTAIR 4XR: Ingress protection | IP68 (waterproof to 6 ft / 2 m for 1 hour, as MSA states) |
| ALTAIR 4XR: Drop test | 25 ft (7.5 m) drop protection; MIL-STD-810G drop protection |
| ALTAIR 4XR: Battery and run time | Rechargeable Li-polymer battery; 20-hour run time; less than 4 hour charge time |
| ALTAIR 4XR: Operating temperature | -40 °F to +140 °F (-40 °C to +60 °C) |
| ALTAIR 4XR: Warranty | 4 years (plus optional 1-year extension) |
| ALTAIR 4XR: Approvals (selector) | Class I Div 1 Groups A, B, C, D; CSA; ATEX; IECEx |
| ALTAIR 4X: Sampling | Diffusion |
| ALTAIR 4X: Ingress protection | IP67 (approval agency-certified, as MSA states) |
| ALTAIR 4X: Battery and run time | 30+ hour run time for continuous operation over three shifts |
| ALTAIR 4X: Warranty | 3-year instrument warranty |
| ALTAIR 4X: Approvals (selector) | MSHA |
Source: MSA ALTAIR 4XR Multigas Detector bulletin 0816-102-MC (PDF); MSA Safety Equipment Catalog 2026-2027 (PDF), ALTAIR 4X Detector (MSHA) page.
ALTAIR 4XR sensor ranges
| Model | Gas | Range and resolution (as printed) |
|---|---|---|
| ALTAIR 4XR | combustible gas (LEL) | 0-100% (resolution 1%) |
| ALTAIR 4XR | oxygen (O2) | 0-30% (0.1%) |
| ALTAIR 4XR | carbon monoxide (CO) | 0-1999 ppm (1 ppm) |
| ALTAIR 4XR | hydrogen sulfide (H2S) | 0-200 ppm (1 ppm); H2S-LC 0-100 ppm (0.1 ppm) |
| ALTAIR 4XR | sulfur dioxide (SO2) | 0-20 ppm (0.1 ppm) |
| ALTAIR 4XR | nitrogen dioxide (NO2) | 0-50 ppm (0.1 ppm) |
| ALTAIR 4X | methane (CH4) | methane-optimized catalytic bead sensor (XCell Ex-M, 0-100% LEL or 0-5% CH4) |
| ALTAIR 4X | oxygen (O2) | 0-30% vol |
| ALTAIR 4X | carbon monoxide (CO) | 0-1999 ppm |
| ALTAIR 4X | nitrogen dioxide (NO2) | 0-50 ppm |
Source: MSA ALTAIR 4XR Multigas Detector bulletin 0816-102-MC (PDF); MSA Safety Equipment Catalog 2026-2027 (PDF), ALTAIR 4X Detector (MSHA) page.
Approvals, as MSA prints them
| Mark | As printed |
|---|---|
| ALTAIR 4XR: USA | Class I, Division 1, Groups A, B, C and D; Class II, Division I, Groups E, F and G; Class III, Division I; ambient temperature -40 °C to +60 °C; T3 |
| ALTAIR 4XR: Canada CSA | CAN/CSA C22.2 No. 152 combustible gas detection instruments; C22.2 No. 152 performance ambient temperature -20 °C to +54 °C, T3; C22.2 No. 157 intrinsic safety ambient temperature -40 °C to +54 °C, T3 |
| ALTAIR 4XR: Europe | Directive 2014/34/EU (ATEX): II 1G Ex ia da IIC T3 Ga, -40 °C to +60 °C, IP68; CE 0080; Directive 2014/30/EU (EMC): EN50270 Type 2, EN61000-6-3 |
| ALTAIR 4XR: IEC | IECEx Ex ia da IIC T3 Ga, -40 °C to +60 °C, IP68 |
| ALTAIR 4X: MSHA | 30 CFR Part 22 methane detector; 30 CFR Part 75 determination testing for methane and oxygen deficiency (as the catalog lists it) |
Source: MSA ALTAIR 4XR Multigas Detector bulletin 0816-102-MC (PDF); MSA Safety Equipment Catalog 2026-2027 (PDF), ALTAIR 4X Detector (MSHA) page. The label on the instrument governs.
ALTAIR 4XR documents
- Poster: ALTAIR 4X MSHA Multigas Detector (PDF)
- ATO: ALTAIR 4X MSHA Multigas Detector (PDF)
- Data Sheet: Training Program for MSA Portable Instruments Maintenance, Service & Repair (PDF)
- Data Sheet: Link Software (PDF)
- Manual: ALTAIR 4X MSHA Multigas Detector (PDF)
- PA DEP: ALTAIR 4X (PDF)
- MSHA: ALTAIR 4X (PDF)
- Bulletin: ALTAIR 4XR Multigas Detector (PDF)
- ATO: ALTAIR 4XR Multigas Detector (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)
- Quick Start Guide: ALTAIR 4XR (PDF)
- Technical Bulletin: XCell Sensors (PDF)
- Operating Manual: ALTAIR 4 (10086638) and ALTAIR 5 (10093057) Charging Cradles (PDF)
- Manual: ALTAIR Pump Probe Manual (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 4XR and 4X Multigas Detectors questions
Which ALTAIR 4XR listings do you stock? 10125914, 10178356, 10178357, 10178358, 10178557, 10178558, 10178571, 10178572, 10179330, 10125912, 10125913, 10178566, 10178559, 10178568.
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.