Siemens has more than 30 years of experience with natural gas chromatographs and is the pioneer in applying microelectrical mechanical systems (MEMS) for online GCs.  Chip-size valves and detectors combined with narrow-bore capillary columns offer nsurpassed performance and deliver a wide range of benefits.  The analyser can be used in rough environments because of its rugged and compact design. The unique multiple and in-line analytical functions open up new possibilities and provide shorter analysis times.

SITRANS CV provides the necessary information for natural gas calculations such as calorific value and density, which are required for fiscal energy measurement.


Detector types

Thermal conductivity (micro TCD)

Number of detectors

TMax. 8 TCD cells


Isothermal  mass oven

Temperature ranges

60 - 155 °C

PTGC and sub-ambient

Not applicable


Gaseous (energy gas) /
valveless live- switching and - injection


  • Fast analysis through innovative MEMS technology

  • Precision through valveless live injection

  • High separation performance through narrow-bore capillary columns

  • Low detection limits through powerful detectors

  • High linearity over the entire measuring range saves expensive calibration gases

  • Easy and safe operation using CV Control

  • Automatic optimization of methods increases availability

  • Can be mounted directly at the sample extraction point; with its extremely robust construction, installation requirements are minimal

  • Low operation costs through modular design and low power consumption

  •  System solutions and service worldwide

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