User guide

3 ELECTRICAL CONNECTIONS
24
OPTIFLEX 2200 C/F
www.krohne.com 04/2013 - 4000861902 - AD IECEX OPTIFLEX2200 R02 en
3.6 Ex d ia / Ex ia tb equipment
3.6.1 General notes
Ex d ia- and Ex ia tb-approved equipment have two separate compartments. The electronics in
the electronics block compartment are Ex ia-approved and the terminals compartment is Ex d /
Ex t-approved.
Figure 3-7: Compact version: Compartments in Ex d ia- and Ex ia tb-approved equipment
Figure 3-8: Remote (Field) version: Compartments in Ex d ia- and Ex ia tb-approved equipment
1 Electronics block (Ex ia) compartment
2 Terminal (Ex d / Ex t) compartment
INFORMATION!
The flamepath dimensions are better than the values specified in the International Standard
IEC 60079-1 (minimum length 13.9 mm and maximum gap 118
µ m).