KTR-Group ROTEX GS - 10.1 Intended use in potentially explosive atmospheres

ROTEX
®
GS
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
45510 EN
35 of 40
23
Please observe protection
note ISO 16016.
Drawn:
2020-02-10 Pz/Ht
Replacing:
KTR-N dated 2019-11-22
Verified:
2020-02-10 Pz
Replaced by:
Conditions of operation in potentially explosive atmospheres
ROTEX
®
GS couplings are suitable for the use according to EU directive 2014/34/EU.
1. Industry (with the exception of mining)
• Equipment group II of category 2 and 3 (coupling is not approved/not suitable for equipment group 1)
• Substance group G (gases, mists, vapours), zone 1 and 2 (coupling is not approved/not suitable for zone 0)
• Substance group D (dusts), zone 21 and 22 (coupling is not approved/not suitable for zone 20)
• Explosion group IIC (gases, mists, vapours) (explosion group IIA and IIB are included in IIC) and
explosion group IIIC (dusts) (explosion group IIIA and IIIB are included in IIIC)
Temperature class:
Temperature class
Ambient or operating temperature T
a
1)
Max. surface temperature
2)
T4
-30 °C to +90 °C
+110 °C
T5
-30 °C to +75 °C
+95 °C
T6
-30 °C to +60 °C
+80 °C
Explanation:
The maximum surface temperatures each result from the maximum permissible ambient or operating temperature T
a
plus the maximum
temperature increase T of 20 K to be considered. For the temperature class a safety margin subject to standard of 5 K is added.
1) The ambient or operating temperature T
a
is limited to +90 °C due to the permissible permanent operating temperature of the elastomers
used.
2) The maximum surface temperature of +110 °C applies for the use in locations which are potentially subject to dust explosion.
In potentially explosive atmospheres
• the ignition temperature of dusts generated must at least be 1.5 times the surface temperature to be
considered
• the glow temperature must at least be the surface temperature to be considered plus a safety distance of 75 K.
• the gases and vapours generated must amount to the temperature class specified.
2. Mining
Equipment group I of category M2 (coupling is not approved/not suitable for equipment group M1).
Permissible ambient temperature -30 °C to +90 °C.
In mining for equipment group I of category M2 coupling hubs and DKM spacers made of steel only are
permissible.
10 Enclosure A
Advice and instructions regarding the use in potentially explosive atmospheres
10.1 Intended use in potentially explosive atmospheres