FLENDER RUPER RBS, Руководство по сборке и эксплуатации, Страница: 18 / 78

Safety instructions
2.3 Safety instructions for a coupling for use in potentially explosive atmospheres
18 Edition 09/2022 M3602-01en
Coupling part 1 with electrically insulating buffers
The following marking is visible on the outer diameter of coupling part 1:
Flender GmbH II 2G Ex h IIB T6 ... T4 Gb X
D 46393 Bocholt II 2D Ex h IIIC T85 °C ... 110 °C Db X
RUPEX <Year of manufacture> I M2 Ex h Mb X
2.3.2 Conditions of use
2.3 Safety instructions for a coupling for use in potentially explosive atmospheres
Note also the material-dependent permissible ambient temperature of the buffers (5) in ac-
cordance with section RUPEX buffers (5) (Page 74).
A coupling designed in accordance with the Explosion Protection Directive is suitable for the
following conditions of use:
• Equipment group I
– Category M2
• Equipment group II
– Category 2 and 3
– Group of substances G, zone 1 and 2
– Group of substances D, zone 21 and 22
– Explosion group IIA, IIB and IIC
– Explosion group IIA and IIB when electrically insulating buffers are used
Conditions of use for products with TX marking
The maximum ambient temperature stated in the following tables applies to the temperature
in the direct vicinity of the coupling and the temperature of adjacent components.
1. Gases, vapours or mists
Check the ambient temperature for use of the coupling in the relevant temperature class.
Max. ambient temperature Temperature class
80 °C T4
70 °C T5
55 °C T6
Table 2-2: Temperature classes (TX) for explosive atmospheres as a result of gases, vapours or mists
2. Dust/air mixtures
Check the ambient temperature.