Servomex delivers the carbon dioxide measurements you need

Our range of carbon dioxide analyzers delivers the reliable and accurate measurements your process needs, using a choice of sensing technologies such as including Infrared, Plasma, and Gas Chromatography. Our products include CO2 combustion analyzers and CO2 purity analyzers, and are available as hazardous area, safe area, and portable instruments.

Luke Purdle
Product Manager

Why measure Carbon Dioxide ?

A common byproduct of combustion, carbon dioxide is a colorless gas which absorbs infrared radiation, acting as a greenhouse gas. It is closely regulated around the world as a harmful emission from many power generation and industrial manufacturing processes, and so must be monitored using CO2 gas analyzers. It is also a versatile industrial material, used in inerting operations and as a feedstock for the synthesis of fuels and chemicals. A CO2 gas analyzer may also be needed to monitor carbon dioxide as a trace impurity in industrial, medical, or semiconductor gases.

How CO2 gas analyzers work to measure carbon dioxide

A number of sensing technologies are available for our carbon dioxide gas analyzers. The most appropriate solution depends on the application, and the measurement range required.

  • Infrared sensing is a flexible measurement technology based on the unique light-absorbing properties of some gases, delivering a non-contact, real-time detection of the selected gas’s concentration in a mixture.
  • Gas Chromatography separates out the constituent components of a gas mixture, allowing relative concentrations to be determined. Under optimized conditions, it can measure down to parts-per-billion (ppb) levels, making it ideal for high-purity control processes.
  • Servomex’s Plasma emission detection technology was developed to provide a safer alternative to flame-based sensing for hydrocarbon analysis, and delivers ultra-low measurements. It provides highly sensitive and selective speciation, so is only suitable for trace analysis applications.
  • Spectroscopic technology combines innovative Infrared absorption spectroscopy, using advanced spectral scanning, with chemometrics, to deliver a high-quality optical measurement that is both accurate and highly stable.


SERVOPRO Servomex 4900 Multigas

Our key application solutions

Measuring CO2 emissions is a key part of any industry’s clean air strategy. The SERVOPRO 4900 Multigas CEMS analyzer provides continuous monitoring at ppm or percentage levels. For carbon capture processes, the versatile SERVOPRO MultiExact 4100 or MultiExact 4200 multi-gas analyzers are recommended.

Industrial process control measurements can be made by the SERVOTOUGH SpectraExact 2500 – for example in the manufacture of ethylene or ethylene dichloride – and the SpectraScan 2400. Because it is present in atmospheric air, CO2 is a common contaminant in ultra-high purity gases. The trace and ultra-trace measurement capabilities of the SERVOPRO Chroma, NanoChrome, and NanoChrome ULTRA make these CO2 gas analyzers ideal for this application.

Our solutions for Carbon Dioxide gas analysis

Servomex has a variety of carbon dioxide gas analyzer solutions available to suit different applications. For hazardous area processes, the SERVOTOUGH range includes the SERVOTOUGH SpectraExact 2500 photometric analyzer and the SpectraScan 2400 optical analyzer, which measure CO2 using Infrared and Spectroscopic sensing respectively. Infrared sensors also power our portable SERVOFLEX CO2 analyzers, the MiniMP 5200, and MiniHD 5200. Our safe area CO2 analyzers are in the SERVOPRO product range, and include the Infrared-sensing 4900 Multigas, MultiExact 4100 , and MultiExact 4200 multi, along with the Chroma, NanoChrome, and NanoChrome ULTRA, which all use Plasma sensing combined with Gas Chromatography.

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4900 Multigas


The 4900 Multigas is a high-performance CEMS analyzer designed for a wide range of multi-gas measurements.

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The Chroma is optimized to specific background gases to ensure optimum performance for your application.

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MiniHD 5200


The MiniHD 5200 portable gas analyzer is a rugged, heavy duty analyzer designed to accurately measure the levels of O2, CO and CO2 within common gas mixtures.

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MiniMP 5200


The only truly portable battery-powered gas analyzer with MCERTS and TUV certification, offers single or dual measurement of oxygen (O2) and carbon dioxide (CO2).

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MultiExact 4100


A high-performance multi-gas analyzer designed to provide up to four simultaneous gas stream measurements.

SERVOPRO MultiExact 4100
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MultiExact 4200


The MultiExact 4200 analyzes up to four gases simultaneously for Syngas and HyCO

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Incorporating the latest advances in gas sensing and signal processing methodology, the NanoChrome revolutionizes ultra-trace purity measurements.

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NanoChrome ULTRA


Using proven ultra-trace sensing, the NanoChrome ULTRA conquers the most stringent demands of the semiconductor industry, delivering a cost-effective solution compared to competing technologies.

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A getter-based purification unit designed for the purification of carrier gases used in Gas Chromatography (GC) and other analytical applications

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SpectraExact 2500

SERVOTOUGH Hazardous Area

Flexible single and multicomponent gas analysis capability for corrosive, toxic and flammable sample streams.

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SpectraScan 2400

SERVOTOUGH Hazardous Area

A real-time optical analyzer utilizing the Precisive field-proven optical bench. A breakthrough capability in the continuous analysis of light hydrocarbons C1-C6.

SERVOTOUGH SpectraScan 2400 real-time Tunable Filter Infrared analyzer
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Proven carbon dioxide sensing technologies

Our carbon dioxide analyzer range uses proven sensing solutions that deliver accuracy, ease of use, and a long operational life.

Gas Chromatography delivers high-purity analysis

Gas Chromatography is an analysis technique that works effectively alongside other sensing technologies, delivering a highly sensitive measurement of the constituent components of a gas sample. It is used in our SERVOPRO Chroma, NanoChrome, and NanoChrome ULTRA analyzers.

Learn more about Gas Chromatography technology

Real-time Infrared measurements of gases in a mixture

Infrared sensing is a flexible measurement technology based on the unique light-absorbing properties of some gases. It delivers a non-contact, real-time detection of the selected gas’s concentration in a mixture, and is widely used in our analyzer range, including portable analyzers, photometric products, and multi-gas analyzers.


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Plasma delivers a highly specific, stable gas measurement

Developed to provide a safer alternative to flame-based sensing for hydrocarbon analysis, Servomex’s Plasma emission detection technology delivers ultra-low gas measurements. It is used in our SERVOPRO Chroma, NanoChrome, and NanoChrome ULTRA analyzers.

Learn more about Plasma technology

Real-time Spectroscopic sensing for light hydrocarbons

Servomex’s Spectroscopic sensing technology is a revolutionary measurement for light hydrocarbons C1-C5+, where innovative NIR/IR absorption spectroscopy with state-of-the-art spectral scanning is coupled with advanced chemometric-based data processing. It is used in our innovative SERVOTOUGH SpectraScan 2400 analyzer.


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Find out how we can support your carbon dioxide gas analysis requirements with these resource

ES Magazine Issue 37 Clean Air Part 2

ES Magazine Issue 37 Clean Air Part 2

ES Magazine Issue 36 Purity & Specialty

ES Magazine Issue 36 Purity & Specialty

Application Note Purified Terephthalic Acid (PTA)

Application Note Purified Terephthalic Acid (PTA)

Application Note Carbon Capture Storage (CCS)

Application Note Carbon Capture Storage (CCS)

Expert solutions for your carbon dioxide application

CO2 analysis is critical to a range of applications in many industries. See how we provide the analyzer you need for your specific process.

Coal-fired thermal power

Our total analytical solution delivers benefits in cost, process efficiency, safety and emissions across the process

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Ethylene production

We have the solutions to make your process more efficient

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Process heaters and furnaces

A choice of technologies to fit your application

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Medical gases

An advanced solution for purity assay and impurity detection

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Servomex – gas analysis to empower a changing world

Servomex is the global leader in gas analysis, providing solutions for cleaner, more efficient industries, and enabling the manufacture of products that benefit everyone. With 70 years of expertise and research behind us, we deliver industry-changing gas analysis measurements for process control, quality, safety, emissions monitoring, and combustion efficiency.

Atlas showing Servomex loctions

Global service support delivered locally

Wherever you are in the world, our network of service engineers provides the expertise you need to keep your ammonia analyzer operating at peak performance. With state-of-the-art service centers around the globe, you’ll always have the support your process needs.

Service team meeting customer

We provide tailored service packages that support your product throughout its life

Our global service network delivers the support you need to keep your analyzer or system operating at peak performance, for total peace of mind.

Broadly, we categorise our customers into two distinct groups

Purity & Speciality

Our Purity & Specialty (P&S) team provides products, knowledge and service to market sectors including industrial and medical gases, UHP gases, and semiconductor manufacture

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Industrial process & Emissions

Our Industrial Process & Emissions (IP&E) division is responsible for our gas analysis solutions in the power generation, hydrocarbon processing and emissions monitoring markets

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Choose the experts in Carbon Dioxide gas analysis

The Servomex difference is clear from the start, all the way through to delivery of carbon dioxide gas analysis system that will transform your process.

We consult with you to determine what you need

Our team stays in place throughout the project, ensuring consistent communication. This starts with identifying the parameters that the system must meet to ensure optimum performance and ease of use.

We design and build your system in our dedicated facility

Our schematics and documents are reviewed by the customer until the final design is agreed upon. Our skilled engineers then assemble the system at one of our cutting-edge regional centers, with continuous evaluation throughout the build process.

We test and deliver your integrated solution

After internal testing and an intensive Factory Acceptance Test (FAT), the finished system is shipped for installation. Our expert support team can commission and calibrate the system and provide any necessary operator training.

Choose the experts in carbon dioxide gas analysis

The Servomex difference is clear from the start, all the way through to the delivery of carbon dioxide gas analysis system that will transform your process.

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