Siemens sipart ps2 Operating Instructions Manual page 26

8 Certificates
The SIPART PS2 positioner with the accompanying options will be approved as standard in zone 1 as EEx ia/ib
(see EC Type Examination Certificate) and for zone 2 as Ex n (see Conformity Statement).
WARNING
!
Since the maximum values of normal operation may be violated in the event of a fault when using
the positioner and its options in zone 2, the EEx n device and its options must never be used again
subsequently in zone 1.
SIPART PS2
A5E00074600-05
Operating instructions
67