Device versions and marking, 5 ignition protected types, 6 temperature classes – KROHNE ESKII ESK3 PA ATEX II2G Ex i EN User Manual
Page 6
2
DEVICE VERSIONS AND MARKING
6
ESK
www.krohne.com
09/2008 • 4000333901 MA ESK-Ex- II2G-AD-R01 en
2.5 Ignition protected types
The power circuits of the electronic signal outputs ESK .... are designed to conform with the
intrinsically safe type classified in level of protection “ia”. Operation with intrinsically safe
circuits in level of protection "ib" is also allowed.
2.6 Temperature classes
Depending on temperature class and ambient temperature, the electronic signal outputs
ESK .... are approved for the process temperatures contained in the following table.
Temperature class
Permitted ambient temperature T
amb
[°C]
ESK II / ESK2A
ESK3-PA
T6
-40 … 60
-40 … 50
T5
-40 … 75
-40 … 65
T4...T1
-40 … 85
-40 … 85
ESK .... permitted ambient temperature T
amb
depending on temperature class
MA_ESK_Ex_II2G_R01_en_PRT.book Page 6 Tuesday, September 23, 2008 8:05 AM
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