... installation and maintain.anti-interfere, anti-impurity, anti-acid, corrosion resistant, portability. Specifications:A,SBL digital flow meter, ... the performance against interference and impurities, and is light and reliable, hence is widely used in petroleum ... and maintain.13,anti-interfere, anti-impurity, anti-acid, corrosion resistant, portability Technical data:Nominal Diameter:6-4000mmNominal ...