SITRANS CV is the consequent advancement of a micro process chromatograph based on MEMS technology to a calorific value (CV/BTU) analyser with high performance. The analyser can be used also in rough environment 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 all information to the natural gas quality and its physical properties such as calorific value and density, which are required for manifold applications in the natural gas industry, especially for fiscal energy measurement