gas meter,gas meter,Co gas flow meter,flowmeter: No movable part:0.5% 4~20mA,remote control 6~4000mm gas meter,air flow meter,flowmeter:industrial use,all gas, ... design, sufficient installation space shall be considered.f. In case media flow up-down or down-up, for ordering, ... system); pulse; 0~10V; RS232/RS485 (optional);HART PROTOCOLMaterialCarbon steel; s.s.304; s.s.316L; also supplied to user ...