KROHNE VARIFLUX IFS 6000 F-EEx EN - Manual (Page 6)

6 ALTOFLUX IFS 4000F-EEx, PROFIFLUX IFS 5000F-EEx, VARIFLUX IFS 6000F-EEx
1.2 General information PROFIFLUX IFS 5000 F-EEx
The PROFIFLUX IFS 5000 F-EEx electromagnetic primary head in remote design (F = field)
complies with the European Directive 94/9 EC (ATEX 100a) and has been approved for hazardous
classified locations of Zone 1 and 2 by the KEMA conform to the European Standards of the EN
500xx series.
They have the following approval number:
KEMA 02 ATEX 2024 X
The IFS 5000 F-EEx primary head with meter sizes DN2.5 up to and including DN15 is designed for
ambient temperatures in the range of -40°C to +60°C. The meter sizes DN25 up to DN100 inclusive
are designed for ambient temperatures ranging from -20°C to +60°C.
The IFS 5000 F-EEx primary head in remote design can be installed in environments that are
classified as Zone 1 or Zone 2 hazardous locations. The maximum permissible process liquid
temperature is dependent on the maximum ambient temperature (Ta) that can occur in that
environment too.
For installation of the IFS 5000 F-EEx primary head please conform to the below listed temperature
classification table. The first column lists the temperature classes for gases and the second one the
rating for dusts.
The table below applies for all meter sizes D2.5 up to and including DN100.
Temperature classification
Maximum process liquid temperature Temperature
class Max. surface
temperature
Ta ≤ 40 °C Ta ≤ 50 °C Ta ≤ 60 °C
T6 T 80 °C 65 °C 65 °C 65 °C
T5 T 95 °C 85 °C 85 °C 80 °C
T4 T130 °C 125°C 125°C 120°C
T3 T180 °C 180°C 165°C 145°C
Use heat-resistant cables above 165 °C 130°C 100°C
The IFS 5000 F-EEx primary head in remote design is connected to a signal converter, e.g. IFC 090
F/…-EEx, which is also approved according to the European Directive 94/9 EC (ATEX 100a). The
signal converter is installed on a distance from the IFS 5000 F-EEx primary head and connected via
a field coil cable, an electrode cable and a bonding wire.
The IFS 5000 F-EEx is marked with the following EEx-code:
II 2GD EEx me ib IIC T6…T3
Also see the EC-type examination certificate in Section 5 of these additional instructions.