DEVICE DESCRIPTION
2
7
ESK4... ...
www.krohne.com
10/2017 - 4001078703 - AD ESK4 Ex II2G R03 en
2.4 Equipment category
The electronic signal outputs are designed in category II 2G or EPL Gb according to EN 60079-0
and EN 60079-11 for use in zone 1.
2.5 Types of protection
The electronic signal output is designed with protection type intrinsic safety, protection level "ia"
according to EN 60079-11.
The marking 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.
Permissible ambient temperatures for ESK4... ...
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, protection level "ia"
IIC
IIC
IIC
IIC
Suitable for gas group IIC, IIB and IIA
T6
T6
T6
T6
Suitable for temperature class T6...T1
Gb
Gb
Gb
Gb
EPL, suitable for zone 1
Type of 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
