KROHNE CAPAFLUX EEx-ATEX EN - Manual (Page 5)

CAPAFLUX IFM 5080 K/CAP-EEx and CAPAFLUX IFM 5080 K/CAP i-EEx 5
1.2 IFC 090 / CAP/…-EEx signal converter
The IFC 090 / CAP/…-EEx signal converter consists of a cylindrical housing of die-casted aluminum,
which has two separate compartments, divided from each other by an integrated wall with casted
flameproof terminal feed-through. The neck at the bottom of the housing contains a flameproof cable
feed-through. The signal converter housing is on both ends closed by a cylindrical threaded cover with
O-ring sealing. The housing has an ingress protection degree of IP 65 / IP 67 conform to EN 60529.
1.2.1 Electronics compartment
The electronics compartment accommodates the pre-certified IFC 090 / CAP…-EEx electronics unit
with approval number PTB 98 ATEX 2012 U. The electronics compartment is designed with type of
protection flameproof enclosure "d" according to EN 50018. It is closed by a threaded flameproof
display cover with glass window.
1.2.2 Terminal compartment
The terminal compartment has seven terminals for connection of the power supply and signal output
circuits. Sect. 2 (Connection diagram) shows the terminal arrangement for the regular and MODIS
version of the IFC 090 / CAP/…-EEx signal converter. The terminal arrangement of the MODIS version
(i.e. IFC 090 / CAP i-EEx) is shown in Sect. 2 (Modis Converter). Two of the terminals are used for
connection of the non-intrinsically safe power supply and four terminals (marked with "*") for the
intrinsically safe, category "ia" signal outputs of the MODIS modules. The non-intrinsically and
intrinsically safe terminals are separated from each other by a metal dividing plate, which is screwed to
the remaining (not connected) M4 terminal. The two non-intrinsically safe power supply terminals are
covered by an insulating plate.
The terminal compartment (with standard type of protection increased safety "e") is standard equipped
with two ATEX approved "EEx e" cable glands. The terminal compartment can also be provided as a
flameproof enclosure "d", in which case ATEX approved "EEx d" cable glands of size Pg13.5, Pg16 or
M20x1.5 are either factory installed or must be installed by the customer. For flameproof conduit
systems, the terminal compartment must have type of protection flameproof enclosure "d" according to
EN 50018. The conduits must be sealed by "EEx d" approved (within the ATEX 100a directive) sealing
devices (i.e. stopping box) directly at the conduit entrances of the as flameproof enclosure performed
terminal compartment.