... instantaneous flow and positive, negative, net flow, velocity of flow. l operation4×4 touching key boardl signal outputelectricity signal4-20mA or ... signal OCT output from relay,20 signal sources are optional. l Signal input 4-20mA input from 5 channels,accuracy 0 ... signals such as input pressure, level liquid and temperature, etc.l Data interfaceRS232/RS485l Other functionit has the memory of the ...