Safety and commissioning information for Ex areas
14.2 Dry-running protection for centrifugal pumps by active power monitoring
SIMOCODE pro
316 System Manual, 05/2019, A5E40507475002A/RS-AD/004
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
firedamp
– Under Equipment Group II, Equipment category 2G (potentially explosive gas
atmospheres, zone 1)
– Under Equipment Group II, Equipment category 2D (potentially explosive dust
atmospheres, zone 21)
● 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).
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