The choice of Kestrel 5200 models is between the basic 0852HVG ( 914-0006 ) and the Bluetooth LiNK 0852LHVG ( 914-0009 ). Both offer distinctive monitoring functions for evaporation rate (lb/ft²/hr, kg/m²/hr), air flow (CFM, m³/hr, m³/m, m³/s, L/s), Delta