By pass & Inline Thermal Mass flow meters & controllers based on heat dissipation principle. Very versatile option for all types of application ranging from laboratory, industrial to hazardous areas. These gas mass flow meters & controllers can measure and control gas flows from 0.014 mln/min to 1670 ln/min the world class accuracy ±0.5 of RD. With optional multi-gas/multi-range functionality: freely programmable ranges and gas types.