... Air flow meter (Good quality,low price) Specifications:A,SBL digital flow meter,intelligent flow meter,gas flow meter,liquid flow meter,steam flow ... water conservancy etc. Functional characteristics:1, Measurement flow of liquid, gas, steam, ropy mediums ... ±0.2% ±0.5 % ±1.5% Measuring range: gas 1:100,1:50,1:30,1 ... ,it also can show accumulated flow and instant flow installation:easy to operate and ...