... the transducer: DS2,SGND,DS------The semaphore shields(copper wire net)EXT_EXT+------------------excitation coilTR,TR+---------------------RS485COM,ALM+,ALM----------- The top and ... ,SIG2,SGND---------- semaphore electrode DS1,DS2-----------semaphore countercheck(brass wires net) EXT+,EXT- --------------- excitation coil TYPE 1: Discerption Type With HART ...