... testing equipment quick delivery tern Air flow meter (Good quality,low price) Specifications:A,SBL digital flow meter, ... and reliable, hence is widely used in petroleum industry, chemical engineering, energy industry, food industry, environmental protection and ... 13,anti-interfere, anti-impurity, anti-acid, corrosion resistant, portability Technical data:Nominal Diameter:6-4000mmNominal pressure:-0 ...