GEARex
®
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40310 EN
33 of 36
15
Please observe protection
note ISO 16016.
Drawn:
2019-09-19 Pz/Wb
Replacing:
KTR-N dated 2017-01-02
Verified:
2019-09-19 Pz
Replaced by:
Types available:
FA, FB, FAB, DA, DB and DAB
Conditions of operation in
potentially explosive atmospheres
GEARex
®
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 +80 °C due to the permissible permanent operating temperature of the GEARex
®
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.
10
Enclosure A
Advice and instructions regarding the use in
potentially explosive atmospheres
10.1 Intended use in
potentially explosive atmospheres
