KROHNE OPTIFLUX 2000-4000-5000-6000 -IFC 100 Ex EN - Manual (Page 19)

ELECTRICAL CONNECTIONS
4
19
OPTIFLUX
www.krohne.com 04/2009 - 7.30685.22.00 - EX IFC 100 en
4.1 Installation instructions
For OPTIFLUX 2000 F / 4000 F / 5000 F,: For OPTIFLUX 2000 F / 4000 F / 5000 F,: For OPTIFLUX 2000 F / 4000 F / 5000 F,: For OPTIFLUX 2000 F / 4000 F / 5000 F,:
When used in a potentially explosive atmosphere, requiring the use of apparatus of equipment
category 2G, certified cable entry devices must be used that are suitable for the application and
correctly installed.
When used in a potentially explosive atmosphere, requiring the use of apparatus of equipment
category 2D, certified cable entry devices with a degree of ingress protection of at least IP6x
according to EN 60 529 must be used that are suitable for the application and correctly installed.
Unused openings must be closed with suitable certified closing elements.
With the use of conduits, a suitable certified sealing device such as a stopping box with setting
compound must be provided immediately at the entrance to the flameproof enclosure.
For OPTIFLUX 2100 C / 4100 C, IFC 100 W and OPTIFLUX 6000 F: For OPTIFLUX 2100 C / 4100 C, IFC 100 W and OPTIFLUX 6000 F: For OPTIFLUX 2100 C / 4100 C, IFC 100 W and OPTIFLUX 6000 F: For OPTIFLUX 2100 C / 4100 C, IFC 100 W and OPTIFLUX 6000 F:
The cable glands and blanking elements must be in type of protection increased safety "e",
suitable for the conditions of use and correctly installed. The devices must provide a degree of
protection of at least IP64 according to EN 60 529.
Additionally for OPTIFLUX 2000 F / 4000 F / 5000 F / 6000 F: Additionally for OPTIFLUX 2000 F / 4000 F / 5000 F / 6000 F: Additionally for OPTIFLUX 2000 F / 4000 F / 5000 F / 6000 F: Additionally for OPTIFLUX 2000 F / 4000 F / 5000 F / 6000 F:
The field coils in type of explosion protection "q" and "m" must be protected by a 160 mA fuse.
The breaking capacity of the fuse must be in accordance with the prospective short circuit
current of the supply. This concerns:
OPTIFLUX 2000 F / 4000 F DN10...20 ("me")
DN200...300 ("qe")
DN25...150 ("qe") (optional)
OPTIFLUX 5000 F "sandwich" DN2.5...15 ("me")
OPTIFLUX 5000 F "flange" DN15...100 ("mb")
OPTIFLUX 6000 F DN25...80 ("mb")
INFORMATION!
General notes for all flowmeters:
• The internal field coil fuses of an IFC 100 W signal converter fulfill the above mentioned
requirements with respect to rated current and breaking capacity.
• The IFC 100 W signal converter is normally delivered with four Ex e certified M20x1.5 cable
glands, clamping range Ø 6...12 mm.
• The OPTIFLUX 2000 F / 4000 F / 5000 F / 6000 F flow sensors and the OPTIFLUX 2100 C / 4100
Ccompact flowmeters are normally delivered with two Ex e certified M20x1.5 cable glands,
clamping range Ø 6...12 mm.