Sierra Instruction Manual ATEX Certified Units: 640S-EEX & 780S-EEX
Page 14 of 15
Interpretation of Markings.
Markings on the outside of this gland carry the following meanings:
Cable Gland Type & Size E-a-b-IE-c-FR-ddd-eee-IP67-nn
a
= Seal Type
1
= Neoprene (black - temp range
–20º to +85ºC)
2
= Neoprene with Continuity washer for lead sheathed cable
3
= Silicone (white or red - temp range
–60º to +180ºC) ;
b
=
Armour clamping
W
= single wire armour
XZ
= woven steel wire/tape
L
= Kit for W and XZ
IE
= Integral Earth stud option
c
= Main component material
none
= brass
S
= stainless steel ;
R
= Optional reduced bore outer seal (red silicone)
ddd
= Gland size ;
eee
= Entry thread type and size ;
IP67
= Ingress Protection code
nn
= year of manufacture
Protection Concept and Gas Groups EEx d IIC / EEx e II
(CENELEC & ATEX) ;
Ex d IIC / Ex e II
(IEC) ; Ex d = Flameproof ; IIC = suitable for Gas Group IIC (e.g.
hydrogen) ignitable gas/air mixtures, and also Groups IIB and IIA ; II = combined
Gas Group
Certificate Numbers
:
(ATEX)
KEMA 06ATEX0105
The ‘X’ suffix denotes Special Conditions for Safe Use’ (see
below)
ATEX (EU Directive 94/9/EC) Markings
II 2 GD
- Equipment Group II (Non-Mining) for Category 2 (Zone 1) with
potentially explosive gas mixtures or combustible dusts
ATEX Special Conditions for Safe Use
1. These glands must not be used with EEx d IIC enclosures with a volume greater
than 2 litres.
2. These glands must not be used with enclosures where the temperature at the
point of mounting exceeds -20°C to +85°C using neoprene seals, or
–60° to
+180°C using silicone seals.
IEC Ex Conditions of Certification