We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

MSA ALTAIR 4XR/5X Nitrogen Dioxide Replacement Sensor, 0-50 ppm, 15 sec - MSA Replacement Sensors
MSAMSA Replacement Sensors

MSA ALTAIR 4XR/5X Nitrogen Dioxide Replacement Sensor, 0-50 ppm, 15 sec

The MSA ALTAIR 4XR/ALTAIR 5X Replacement Sensor (MPN 10121217) is a Nitrogen Dioxide sensor with a 15-second response time, designed for the ALTAIR 4XR and ALTAIR 5X gas detectors. It measures Nitrogen Dioxide from 0…

SKU 3G-OTH-554431

Brand
MSA
Item
ALTAIR 4XR/5X Nitrogen Dioxide Replacement Sensor, 0-50 ppm, 15 sec
Category
MSA Replacement Sensors
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

MSA
Manufacturer Part Number
10121217
Type
MSA, Carbon Monoxide/Nitrogen Dioxide, Sensor, 15 sec
Part Type
Sensor
Gas Detected
Nitrogen Dioxide
Series [NEW]
ALTAIR 4XR
Measurement Range
Nitrogen Dioxide (0 to 50 ppm)
Compatible Detector Model/Series
ALTAIR 5X

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

MSA Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MSA ALTAIR 4XR/ALTAIR 5X Replacement Sensor (MPN 10121217) is a Nitrogen Dioxide sensor with a 15-second response time, designed for the ALTAIR 4XR and ALTAIR 5X gas detectors. It measures Nitrogen Dioxide from 0 to 50 ppm. 3G Electric sources this genuine MSA sensor as part of our industrial safety offering, backed by specialist expertise in controls and instrumentation.

Frequently Asked Questions

What is the MSA 10121217 sensor used for?

The MSA 10121217 replacement sensor detects nitrogen dioxide (NO₂) from 0 to 50 ppm in the ALTAIR 4XR and ALTAIR 5X gas detectors. It is used in industrial safety applications such as chemical plants, refineries, and confined-space entry to warn workers of toxic NO₂ exposure.

What are the specifications of the MSA 10121217 sensor?

The MSA 10121217 is a nitrogen dioxide sensor with a 15-second response time, measuring 0 to 50 ppm. It is compatible with the ALTAIR 4XR and ALTAIR 5X gas detectors. This genuine MSA part is sourced by 3G Electric for industrial safety applications.

Where to buy the MSA 10121217 sensor worldwide?

3G Electric supplies the genuine MSA 10121217 nitrogen dioxide sensor worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this replacement sensor for ALTAIR 4XR and ALTAIR 5X detectors.

How to install the MSA 10121217 sensor in an ALTAIR 5X?

Install the MSA 10121217 sensor by powering off the ALTAIR 5X detector, removing the old sensor, and inserting the new NO₂ sensor firmly into the socket. Reassemble the housing and perform a fresh-air calibration per the detector manual. Always follow MSA’s safety instructions for gas detector maintenance.

Used in

Common applications for MSA
Chemical processing plants — MSA Advantage 3100 series with OV/P100 cartridges for organic vapor and particulate protection
HVAC maintenance — MSA infrared refrigerant leak detector (H3015-8001) for detecting R-401A leaks in commercial systems
Firefighting departments — MSA fire helmets with carved eagle front holders (MPN 10065952) for department identification
Refrigeration service — MSA heated diode leak detector (H0019-8038) for R-12 refrigerant leak detection in older systems
Industrial safety compliance — MSA gas mask canisters (NIOSH P100) for use in confined space entry with organic vapors

MSA Products

3G Electric supplies MSA msa replacement sensors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from MSA

View all MSA parts
Replacement chlorine sensor for MSA ALTAIR 5X gas detectors. Measures chlorine concentrations from 0 to 10 ppm. Compatible with ALTAIR 5X series. Used in industrial environments where chlorine gas may be present, such as water treatment and chemical processing
MSA
Replacement chlorine sensor for MSA ALTAIR 5X gas detectors. Measures chlorine concentrations from 0 to 10 ppm. Compatible with ALTAIR 5X series. Used in industrial environments where chlorine gas may be present, such as water treatment and chemical processing
Replacement oxygen sensor for MSA ALTAIR 5X gas detectors. Measures oxygen concentration from 0 to 30% by volume. Used in industrial environments to monitor oxygen levels for safety
MSA
Replacement oxygen sensor for MSA ALTAIR 5X gas detectors. Measures oxygen concentration from 0 to 30% by volume. Used in industrial environments to monitor oxygen levels for safety
This MSA replacement sensor detects hydrogen sulfide (0 to 200 ppm) and sulfur dioxide. It has a 15-second response time and is designed for use with the ALTAIR 4XR gas detector, also compatible with the ALTAIR 5X. Typical applications include industrial safety monitoring for toxic gas hazards in confined spaces and process areas
MSA
This MSA replacement sensor detects hydrogen sulfide (0 to 200 ppm) and sulfur dioxide. It has a 15-second response time and is designed for use with the ALTAIR 4XR gas detector, also compatible with the ALTAIR 5X. Typical applications include industrial safety monitoring for toxic gas hazards in confined spaces and process areas
Replacement sensor for MSA ALTAIR 5X gas detectors. Detects carbon monoxide (0 to 1,999 ppm) and hydrogen sulfide. Response time: 15 seconds. Used for personal safety monitoring in industrial environments where toxic gas exposure may occur
MSA
Replacement sensor for MSA ALTAIR 5X gas detectors. Detects carbon monoxide (0 to 1,999 ppm) and hydrogen sulfide. Response time: 15 seconds. Used for personal safety monitoring in industrial environments where toxic gas exposure may occur
This MSA replacement sensor detects hydrogen sulfide (H2S) in the range of 0 to 100 ppm with a response time of 15 seconds. It is designed for use with the ALTAIR 4XR gas detector series. Typical applications include industrial safety monitoring in environments where H2S may be present
MSA
This MSA replacement sensor detects hydrogen sulfide (H2S) in the range of 0 to 100 ppm with a response time of 15 seconds. It is designed for use with the ALTAIR 4XR gas detector series. Typical applications include industrial safety monitoring in environments where H2S may be present
Replacement oxygen sensor for MSA Microgard gas detectors. Measures oxygen concentration from 0 to 25% by volume. Suitable for use in confined space entry, plant safety, and combustion monitoring applications
MSA
Replacement oxygen sensor for MSA Microgard gas detectors. Measures oxygen concentration from 0 to 25% by volume. Suitable for use in confined space entry, plant safety, and combustion monitoring applications
Replacement carbon monoxide sensor for MSA ALTAIR 2X gas detectors. Measures 0 to 200 ppm with a 15-second response time. Used in industrial environments for toxic gas monitoring during confined-space entry, refinery, and chemical plant operations
MSA
Replacement carbon monoxide sensor for MSA ALTAIR 2X gas detectors. Measures 0 to 200 ppm with a 15-second response time. Used in industrial environments for toxic gas monitoring during confined-space entry, refinery, and chemical plant operations
MSA Gas Detector Sensor: ALTAIR 2XR, MSA, Hydrogen Sulfide, Sensor, 0 to 200 ppm, ALTAIR 2X, 10153984 (MPN 10121227)
MSA
MSA Gas Detector Sensor: ALTAIR 2XR, MSA, Hydrogen Sulfide, Sensor, 0 to 200 ppm, ALTAIR 2X, 10153984 (MPN 10121227)