Siemens SIMOCODE pro C System Manual page 316

Safety and commissioning information for Ex areas
14.2 Dry-running protection for centrifugal pumps by active power monitoring
Marking on the nameplate of the SIMOCODE pro device with meaning with regard to the
possible applications of the centrifugal pumps to be protected in hazardous areas:
● PTB 18 ATEX 5003 X
● IECEx PTB 18.0004 X
● I (1G/M2) [Ex h Ga/Mb]
● II (1/2) G [Ex h Ga/Gb]
● II (1G/2D) [Ex h Ga/Db]
Explanation of marking:
Notes regarding the term "device":
● The electrical device to be marked (SIMOCODE pro) is installed in the non-hazardous
area.
● The marking refers to the requirements for the non-electrical device (centrifugal pump) to
be protected, which is installed in the hazardous area or in which a hazardous area may
be present.
● The protection function of the SIMOCODE pro device is achieved by monitoring/avoiding
ignition sources on the device to be protected (centrifugal pump) by preventing dry
running.
All valid device combinations (see Module integration (Page 314)) are permitted:
● For explosion protection outside of the equipment (centrifugal pump)
– Under Equipment Group I, Equipment category M2 (mining) for mines endangered by
– Under Equipment Group II, Equipment category 2G (potentially explosive gas
– Under Equipment Group II, Equipment category 2D (potentially explosive dust
● For explosion protection within the equipment (centrifugal pump). In this case, approval
relates to both stated Equipment Groups and Equipment category 1G (potentially
explosive gas atmospheres, zone 0).
316
firedamp
atmospheres, zone 1)
atmospheres, zone 21)
System Manual, 05/2019, A5E40507475002A/RS-AD/004
SIMOCODE pro