All pumping unit (pump, seal, coupling, motor and pump accessories) certified for use in an ATEX classi-
fied environment, are identified by an ATEX tag secured to the pump or the baseplate on which it is
mounted. A typical tag would look like this:
Figure 1: ATEX nameplate
The CE and the Ex designate the ATEX compliance. The code below reads as follows:
II - Group – Non Mining Equipment
2G – Category – Category 2 – Gas
Ex – required by ISO 80079 – 36:2016
h – h indicates mechanical equipment
IIB – Gas Group
T1 – T4 – Permitted Maximum Surface Temperature
Gb – Atmo Equipment Protrection Level
Table 1: Temperature class definitions
Code Maximum permissible surface temperature in °C |
°F
Minimum permissible surface temperature in °C | °F
T1
450 | 842
372 | 700
T2
300 | 572
277 | 530
T3
200 | 392
177 | 350
T4
135 | 275
113 | 235
T5
100 | 212
Option not available
T6
85 | 185
Option not available
For variable speed motor applications – Electric motor must be specified with shaft grounding and flexi-
ble coupling should be conductive steel disc type.
1.5 ATEX Considerations and Intended Use
Model ICO i-FRAME, ICOH i-FRAME Installation, Operation, and Maintenance Manual
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