... digital gas meter (LCD display)Specifications:A,SBL digital flow meter,intelligent flow meter,gas flow meter,liquid flow meter,steam flow meter ... etc.B,Flange ,clamp,thread inserted connection etc.C,4~20mA,pulse ... display reading; 4~20mA (2-wire system); pulse; 0~10V; RS232/RS485 (optional);HART PROTOCOLMaterialCarbon steel ...