DEHN Surge arrestor Selection

hi,

i am working as a control system engineer.. i need to select DEHN Blitzductor CT ex(i) or DEHNconnect RK Ex(i) Surge arrestor Selection in Ex(i) loop, for 2,4 wire 4-20mA AI,3 wire RTD, 3 Wire gas detector, AO, DI, DO. In the loop i also have peppler & Fuchs KFD2- series IS Isolators. I am using Siemens S7 400F PLC for control. Guys please provide me the wiring diagram for this loops.

Thanks & Regards
abdur135 [at] rediffmail.com