... quick delivery tern Air flow meter (Good quality,low price) Specifications:A,SBL digital flow meter,intelligent ... used in petroleum industry, chemical engineering, energy industry, food industry, environmental protection and water conservancy etc. Functional ... :Nominal Diameter:6-4000mmNominal pressure:-0.1+70MPaTemperature:-196°(low temperature type)-40°~ +70°(normal temperature),-40°~ ...