... testing equipment quick delivery tern Air flow meter (Good quality,low price)Specifications:A,SBL digital flow meter,intelligent ... etc.D,D,anti-interfere, anti-impurity, anti-acid, corrosion resistant, portabilitySBL target flowmeter with digital display ... and maintain.13,anti-interfere, anti-impurity, anti-acid, corrosion resistant, portabilityTechnical data:Nominal Diameter:6-4000mmNominal ...