... testing equipment quick delivery tern Air flow meter (Good quality,low price) Specifications:A,SBL digital flow meter,intelligent flow meter ... , gas, steam, ropy mediums or ambulatory mediums in low, normal or high temperature condition.2,Total quantity measurement ... data:Nominal Diameter:6-4000mmNominal pressure:-0.1+70MPaTemperature:-196°(low temperature type)-40°~ +70°(normal temperature),-40°~ +250 ...