KROHNE IFC 110 Converter - Manual (Page 55)

Part C Special applications, functional checks, service, and order numbers Sect. 6.1
05/2003 IFC 110 F 55
6 Special Applications, Functional Checks, Service and Order Numbers
6.1 Use in hazardous areas
6.1.1 General
Signal converters of type IFC 110 F - EEx are type tested as associated electrical apparatus in
compliance with European Directive 94/9/EG (ATEX 100a) in conformity with European Standards
EN 50 014 / EN 50 020.
The EC type examination certificate has been issued by the Physikalisch-Technische
Bundesanstalt (PTB) under: PTB 02 ATEX 2163 X
Important, please note!
• Observe the directions, regulations and electrical data specified in the EC type
examination certificate, see Section 13.
• In addition to the regulations for power installations (VDE 0100), pay particular
attention to the regulations specified in EN 60079-14 “Electrical installations in
hazardous areas".
• Assembly, installation, commissioning and maintenance may only be carried out by
”personnel trained in explosion protection“!
6.1.2 Main safety features
Both generation of the intrinsically safe electrode circuit and also protection of the non-intrinsically
safe field circuit by fusible links form integral parts of the IFC 110 F - EEx signal converter.
• Category / Zone
IFC 110 F - EEx signal converters are associated electrical apparatus required to be installed
outside the hazardous area.
The intrinsically safe electrode circuit is designed in Category 2 for use in Zone 1.
• Types of protection
The electrode circuit is designed in Intrinsic Safety EEx ib IIC type of protection.
The non-intrinsically safe field circuit must be installed inside the hazardous area using a type
of protection conforming to European Standard (e.g. Increased Safety "e").
Power supply and signal inputs / outputs are non-intrinsically safe.
• Field current fuse protection
The field circuit is fuse-protected in the signal converter IFC 110F – EEx by two fusible links on
the FSV circuit board (TR5, 160 mA F).
• Safety-relevant type code
The following code is used for type designation:
IFC 110 F / … - E Ex
1 2 3 4 5 6
1
Electromagnetic signal converter
2 Type series
3 Field housing for “remote” measuring systems
4 Marking – no effect on explosion protection
S Special version for -40 °C
… others as required
5 Approval to European standard
6 Explosion-protected equipment