MEMS AG is a Swiss manufacturer specialised in advanced instrumentation for gas quality measurement. The company was born in 2003 as a spin-off from ABB Corporate Research Switzerland and, after spending its first decade developing static gas meters deployed in millions of homes, broadened its specialisation towards gas quality analysers for industrial, grid and energy billing applications.
Its technological offering is based on the gasQS platform, a correlative measurement solution combining microelectromechanical and microthermal sensors to determine physical properties of the gas in real time. The sensor measures the thermal conductivity and heat capacity of the mixture and, via an additional flow measurement through a critical nozzle, also obtains the density. From these global physical parameters, the equipment calculates key quantities such as Wobbe index, heating value, methane number, compressibility or air/gas ratio, without the need to know the detailed composition beforehand as is the case with a conventional gas chromatograph.
From a metrological standpoint, MEMS provides a particularly solid argument: the gasQS flonic NG has been evaluated by NMi to OIML R140 and certified as CVDD class B, positioning it as a genuine alternative for regulated installations and billing or custody transfer applications. In practical terms, this places its accuracy at a very competitive level compared to a process chromatograph, but with a much more compact, robust and operationally simpler solution.
Another differentiating advantage is maintenance. In standard versions, both flonic and static are notable for requiring no periodic recalibrations or reference gases once supplied, reducing costs and simplifying operation.
For all these reasons, these solutions find application in natural gas networks, biomethane injection, hydrogen blends, biogas plants, gas engines and turbines, industrial burners, fuel cells and energy management or fiscal metering systems.