... 14 years experience. the product have goode quanlity intelligent gas flow meter QUANZHOU RIXIN FLOW METER AND ... in Chian. Specifications:A,SBL digital flow meter,intelligent flow meter,gas flow meter,liquid flow meter ... ,clamp,thread inserted connection etc.C,4~20mA,pulse,0~10V,RS485,HART etc.D,D,anti- ... ),external power supply of 24VDCOutput forms:4-20mA;pulse,0-10V;RS232/RS485;Hart protocol,GPS.Our ...