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GM901 process gas analyzer
New

CO measurement for emission monitoring and process control

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GM901 process gas analyzer
New

CO measurement for emission monitoring and process control

Benefits

  • Nearly uncompromised measurement results thanks to direct in-situ measurement
  • Quick and easy installation and commissioning
  • Simple, user-friendly operation
  • Economical because it is low maintenance

Services and resources

Product Support Product documentation, troubleshooting articles, device details and more.
FLEXible answers to individual needs
Current product

GM901 process gas analyzer

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  • High-end products
  • Highly functional and convenient

What is FLEX?

FLEX selections
Technical excellence
Simplicity
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Fundamental selection Meet your basic measurement needs
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Lean selection Handle your core processes easily
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Extended selection Optimize your processes with innovative technologies
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Xpert selection Master your most challenging applications
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Manufacturer's warranty

Engineered for confidence

Our instruments are designed for long‑lasting performance, precise measurement, and dependable operation in demanding industrial environments. Each product includes a standard manufacturer’s warranty that reflects our commitment to quality and to the trust you place in our solutions.

Should a warranty case occur, the device will be assessed and the applicable remedy will be provided in line with the warranty terms – helping ensure a reliable and efficient resolution and supporting continued operation of your measurement point.

Request for extended warranty

If you require extended warranty coverage, simply contact your local Endress+Hauser representative. Our experts will advise you on the available options to match your application and risk profile, helping you protect your investment, reduce unexpected repair costs, and ensure reliable long‑term operation beyond the manufacturer's warranty period.

Learn more

Warranty terms apply

The manufacturer's warranty and extended warranty are subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

Services by your side

Right‑first‑time commissioning, worldwide

Endress+Hauser’s qualified service engineers ensure your measurement devices are commissioned right the first time, delivering application‑aligned accuracy, regulatory compliance, and operational confidence from startup onwards, anywhere in the world.

Remote support you can trust wherever you operate

With Endress+Hauser Smart Support, you benefit from faster issue resolution, higher uptime, reliable global expertise across the entire product lifecycle – and lasting peace of mind.

Committed to long‑term, sustainable performance

With deep field expertise, harmonized processes, and continuous monitoring, we accompany you with comprehensive service offerings – from initial start‑up through instrumentation maintenance to process optimization – as a true lifetime partner delivering improved outcomes.

For additional information, please contact your local Endress+Hauser representative.

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24/7 customer portal

Personalized transaction space

Check prices and delivery times, save your favorite products, create quotes and place orders in just a few clicks and track deliveries at any time. With access to your complete order and quote history including all relevant documents you benefit from full transparency throughout the entire process.

Easy access to technical documentation

Select and download all technical documentation such as operating manuals, calibration certificates, approvals and CAD drawings conveniently bundled as a complete documentation package for your entire order or quote.

My Endress+Hauser – all in one place

My Endress+Hauser is your 24/7 connection to Endress+Hauser – in the office, in the field or on the go. It brings together transaction management, documentation and software downloads, knowledge base access, customer support, engineering tools and cloud‑based IIoT services helping you work easier, faster and more efficiently.

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Office situation support
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Service options

Product information

Specifications
Measuring / Application task CO
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Description

The GM901 gas analyzer is available as a cross-duct or probe type. As a result, it is suited to a broad range of applications – even for difficult measuring tasks such as high dust loads, overpressure, critical flow profiles, or high measuring gas concentrations.

Field of application
  • For optimization of combustion processes
  • CO monitoring in coal mills
  • Process monitoring in the food industry


Device properties:

  • Representative measurement along the duct diameter
  • Operation via control unit
  • Short response times
  • Verifiable with gas-filled cell; gas-testable probe with test gas
Benefits
  • Nearly uncompromised measurement results thanks to direct in-situ measurement
  • Quick and easy installation and commissioning
  • Simple, user-friendly operation
  • Economical because it is low maintenance
Downloads
Most downloaded
Competence Brochure (CP)
Lösungen zur Emissionsüberwachung Breites Portfolio und langjährige
Erfahrung in Gasanalyse und
Durchflussmessung
German version - 03/2026
Download
Operating Instruction (BA)
GM901-02 Probe Gas Analyzer, Probe Version
The in-situ gas analyzer GM901-02 serves for continuous
measurement of gas concentrations in industrial plants.
English version - 05/2025
Download
Operating Instruction (BA)
GM901-S Cross-Duct Carbon Monoxide Gas Analyzer, Cross-Duct Version
English version - 01/2025
Download
All downloads
15 Downloads
Operating Instruction (BA)
GM901-S Cross-Duct Carbon Monoxide Gas Analyzer, Cross-Duct Version
English version - 01/2025
Download
Operating Instruction (BA)
Most downloaded
GM901-02 Probe Gas Analyzer, Probe Version
The in-situ gas analyzer GM901-02 serves for continuous
measurement of gas concentrations in industrial plants.
English version - 05/2025
Download
Operating Instruction (BA)
GM901 Cross-Duct Carbon Monoxide Gas Analyzer, Cross-Duct Version
English version - 01/2025
Download
Short Instruction (KA)
Instrument Air Adapter for in-situ gas analyzers Description of installation, commissioning and
maintenance
English version - 01/2025
Download
Ex Safety Instruction (XA)
Safety Information for non-Ex analyzer devices
(multi-lingual, also in DE, BG, CS, DA, EL, ES, ET, FI, FR, HR, HU, IT,
LT, LV, NL, NO, PL, PT, RO, RU, SK, SL, SV)
English version - 01/2025
Download
Special Documentation (SD)
GM35, GM700, GM901 Supplement for the Electrical Connections of Control Unit AWE
English version - 04/2026
Download
Industry Solution (SO)
Solutions for gas-fired power plants With our broad range of solutions Endress+Hauser has proven applicability in the entire power generation process, from gas flow to
combustion efficiency to emissions monitoring.
English version - 01/2025
Download
Industry Solution (SO)
Broad range of solutions for waste-to-energy plants Ideal automation and safety solutions for collection, sorting
and recycling of waste
English version - 01/2025
Download
Competence Brochure (CP)
Emission Monitoring Solutions Broad portfolio and long-standing experience
English version - 05/2026
Download
Competence Brochure (CP)
Soluzioni per il monitoraggio delle emissioni Soluzioni per il monitoraggio delle
emissioni
Ampio portfolio e vasta esperienza
Italian version - 05/2025
Download
Competence Brochure (CP)
Most downloaded
Lösungen zur Emissionsüberwachung Breites Portfolio und langjährige
Erfahrung in Gasanalyse und
Durchflussmessung
German version - 03/2026
Download
Competence Brochure (CP)
排出ガス監視ソリューション 幅広い製品群と長年にわたる実績 排出ガス監視、測定原理と技術、国際的な要件とサービス、選択ガイド、そして測定装置の一覧をまとめたパンフレット
Japanese version - 09/2025
Download
Innovation (IN)
GM901 – Carbon Monoxide Gas Analyzers CO measurement for emission monitoring and process control
English version - 03/2026
Download
Innovation (IN)
GM901 – 一酸化炭素ガス分析計 排出ガス監視およびプロセス測定用の直接挿入式ガス分析計
Japanese version - 10/2025
Download
Miscellaneous
Product family: GM, GM32, GM35, GM700, GM901 Product root: IGM32-, IGM35-, IGM700-, IGM901-
Region: Eurasian Economic Union
Approval agency: EAC
Approval number: ЕАЭС KZ.7500525.13.12.00728
07/2025
Download

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Spare parts and accessories

further parts
further parts

SP-SET PRESS.EQUALIS.ELEMENT M121,5 SW

further parts
further parts
Order code 2072382
further parts
further parts

SP-SET SLIDE LOCK A. HOOK

further parts
further parts
Order code 2082924
further parts
further parts

SP-SET F. FRONT LENS ASS. SMALL MAINT.

further parts
further parts
Order code 2083223
further parts
further parts

FILTER INSERT MICRO-TOP 3000L/MIN

further parts
further parts
Order code 5306091
Spare parts & accessories

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