MAXUM Edition II – efficiency meets unsurpassed performance

Known for its flexibility, power, and reliability, the process gas chromatograph MAXUM Ed. II stands for state-of-the-art technology for the analysis of both liquid and gaseous samples. It is used in a wide variety of applications primarily in refineries, the oil refining industry, and the chemical industry.

PIA Life Cycle Portal: The tool for selecting, planning, ordering, commissioning, and maintenance

Configure your devices here

Process gas chromatography

The MAXUM Edition II offers unique variety

The MAXUM Ed. II is used to measure the chemical composition in gases and evaporable liquids in all stages of production and in all areas of refineries, oil refining, and chemical industries. The device was particularly developed for installation in harsh processing environments, to operate either directly online at the process or nearby. The application flexibility of the MAXUM Ed. II allows for the analysis of feedstock, by-products and end products, for quality measurement, and for the determination of waste products. Its versatile features offer the best possible analytical results at low operating costs thanks to a wide selection of components such as injectors, ovens, detectors, and separation columns, as well as components for column switching. Liquid samples can be optimally dosed by the use of a liquid injection valve. Highly sensitive detectors ensure a reliable trace analysis through precise sensors. Additional benefits lie in its particular economic efficiency resulting from the single and double-oven concept plus the modular oven. In addition, networked devices can be monitored in real time by the workstation.


Adaptable to any analysis task

The MAXUM Ed. II with modular oven is an option of the MAXUM GC analytic platform and is comprised of an electrically heated oven with complete insertable chromatography modules. Removal and replacement of a module can be performed in mere minutes, dramatically reducing operating and maintenance times regarding the gas chromatograph. The module can be repaired at the user’s convenience in their maintenance shop or returned to Siemens for refurbishment. With its combination of different components in a modular type system, the MAXUM Ed. II offers a variety of analytical options. It is therefore possible to perform different measurement tasks with just one product, reducing costs for investment, training, and spare parts for our customers.

The perfect match of high performance and minimal maintenance requirements

The MAXUM Ed. II is the leading gas chromatograph in the process industry. It is used worldwide and has proven itself by its high degree of precision and reliability in the analysis of gases. We have now combined these excellent features with a simplified handling, culminating in the MAXUM Ed. II type modular oven.

Technical specifications

Detector types
Thermal conductivity (TCD/4 cells)
Number of detectors
Max. 4 TCD detector modules

Individual or two independent ovens; optionally a small

oven for one small analytics module, a large oven for two

small analytics modules, or a large analytics module;

Two small or two large ovens or any desired combination;

The dual-oven version

Temperature ranges
+60 to 80°C

Benefits at a glance:

  • Reduction of installation costs due to lower installation requirements 
  • High degree of availability due to perfect Plug&Play principle of the analytic modules
  • High level of standardization and low operating costs result in a high level of economic efficiency 
  • Intelligent electronics, local operation via touch screen and central workstation for user-friendly operation 
  • Powerful software for excellent analysis results 
  • Comprehensive network options for central maintenance and secure data transmission 
  • Global Service and Support organization

Special analytical tasks require stable temperatures in the oven to optimize separating performance of the components. The requirements for optimum separation performance are met with our two oven types. The airless oven provides extremely stable isothermal temperatures with high control accuracy, completely without the use of air. The airbath oven offers both isothermal and temperature-programmed operation with air supply.

Airbath/Airless – technical specifications

Detector types

Thermal conductivity (TCD/8 or 2 cells),

flame ionization (FID);

flame photometry (FPD),

plasma discharge (BID),

electron capture (ECD)  

Number of detectors  
Max. 3x detector modules

Single isothermal airbath oven or dual airbath oven with two

separate isothermal zones

Single oven or two separate airless ovens in separate oven space 

Temperature ranges 

+50 to 260°C (airless)
+5 to 225°C (airbath, isothermal mode)

+5 to 330°C (PTGC)

Gaseous and liquid samples; various valve types


  • Specific system adaptation to optimally fulfill measurement tasks
  • Time and cost savings through parallel chromatography 
  • Low operating costs: Flexible oven concept optimizes the air and energy consumption of the analytical solution 
  • Versatility through different detector types such as FID, TCD, FPD, PDD (HID, PID and ECD mode) as well as multi-detectors 
  • Valveless live column switching with electronic pressure regulators
  • Intelligent electronics, local operation and central workstation for user-friendly operation 
  • Powerful software for excellent analysis results 
  • Comprehensive network options for central maintenance and secure data transmission 
  • Global Service and Support organization
New features

Process gas chromatography is ready for digitalization

The right process gas chromatograph for every measurement task

Download the brochure

Downloads, support, and services

Information at a glance

Whether you would like to know more about our process gas chromatographs, have technical questions, or need spare parts, we have summarized essential additional information for you below.

The fastest way to the experts

Proposed solutions for your queries and direct access to our experts in Technical Support.

Service offers

To remain competitive, companies in industry must ensure – and ideally increase – the availability and productivity of machines and plants. As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise.

Service catalog

As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise. With our offerings, you can expect a high degree of reliability and a successful digital future for your company.

Well trained for excellent handling

Receive standardized or individual expertise directly from the manufacturer – with training centers in more than 60 countries.

Safety integrated

Safety is key in the process industries. A failure in instruments relevant for safety may have serious implications for humans, the process and the environment. Therefore, a wide range of our process instruments come with on-board safety features for maximum risk reduction.


Here for you to answer all your questions

We are represented worldwide with production facilities and system integration centers. Each center, whether in Houston, Singapore, or Karlsruhe, has its own sales, engineering and assembly teams, service and logistics hotlines and well-equipped training centers. In addition, our employees have a global presence and are familiar with all relevant local requirements, guidelines, and standards.

Your direct line to Siemens

Contact your regional partner