KROHNE ESK4 Ex II2G Ex iEN - Manual (Page 5)

DEVICE DESCRIPTION
2
5
ESK4... ...
www.krohne.com 05/2014 - 4001078702 MA ESK4 Ex II2G AD R02-en
2.4 Equipment category
The electronic signal outputs are designed in category II 2 G or EPL Gb according to EN 60079-0
and EN 60079-11 for use in zone 1.
2.5 Protection types
The electronic signal output is designed with protection type intrinsic safety, protection level "ia"
acc. to EN 60079-11.
The marking acc. to ATEX is: II 2G Ex ia IIC T6 Gb II 2G Ex ia IIC T6 Gb II 2G Ex ia IIC T6 Gb II 2G Ex ia IIC T6 Gb
2.6 Ambient temperature / temperature classes
Depending on the version and the temperature class, the electronic signal outputs are approved
for the following ambient temperatures.
ESK4... permissible ambient temperatures
The marking contains the following information: The marking contains the following information: The marking contains the following information: The marking contains the following information:
II IIII II Explosion protection, group II
2222 Equipment category 2
G G G G Gas explosion protection
Ex ia Ex ia Ex ia Ex ia Intrinsically safe, level of protection "ia"
IIC IIC IIC IIC Suitable for gas groups IIC, IIB and IIA
T6 T6 T6 T6 Suitable for temperature classes T6...T1
Gb Gb Gb Gb EPL, suitable for zone 1
Type
Signal Output Temperature class Ambient temperature in
[°C] [°F]
ESK4 ...
ESK4-I/O
T6 -40...+60 -40...+140
T5 -40...+75 -40...+167
T4...T1 -40...+85 -40...+185
ESK4-FF
ESK4-PA
T6 -40...+55 -40...+131
T5 -40...+70 -40...+158
T4...T1 -40...+85 -40...+185
AD_ESK4_II2G_R02_en_4001078702_PRT.book Page 5 Wednesday, June 25, 2014 7:19 AM