KROHNE VARIFLUX IFS 6000 F-EEx EN - Manual (Page 4)

4 ALTOFLUX IFS 4000F-EEx, PROFIFLUX IFS 5000F-EEx, VARIFLUX IFS 6000F-EEx
Temperature classification of meter sizes larger than DN300
Maximum process liquid temperature Temperature
class Max. surface
temperature
Ta ≤ 40 °C Ta ≤ 50 °C Ta ≤ 60 °C
T6 T 85 °C 60 °C 60 °C 60 °C
T5 T100 °C 80 °C 75 °C 75 °C
T4 T135 °C 115°C 115°C 115°C
T3 T180 °C 160°C 150°C 140°C
Use heat-resistant cables above - 145 °C 110°C
Temperature classification of meter sizes DN25…150
Maximum process liquid temperature Temperature
class Max. surface
temperature
Ta ≤ 40 °C Ta ≤ 50 °C Ta ≤ 60 °C
T6 T 85 °C 70 °C 70 °C 70 °C
T5 T100 °C 85 °C 85 °C 85 °C
T4 T135 °C 120°C 120°C 120°C
T3 T180 °C 180°C 180°C 180°C
Use heat-resistant cables above - 155 °C 105°C
Temperature classification of meter sizes DN10-20 and DN200-300
Maximum process liquid temperature Temperature
class Max. surface
temperature
Ta ≤ 40 °C Ta ≤ 50 °C Ta ≤ 60 °C
T6 T 85 °C 75°C 70°C 70°C
T5 T100 °C 95°C 90°C 75°C
T4 T135 °C 130°C 115°C 75°C
T3 T150 °C 150°C 115°C 75°C
IMPORTANT !
The maximum process liquid temperature values in the above listed tables only
apply to a lining material of PFA (maximum operating temperature of 200°C). For
other lining materials (e.g. rubber) is a lower process liquid temperature required for
safe operation. See the standard Installation and Operating Instructions for
detailed information about other lining materials.
The IFS 4000 F-EEx is marked with one of the following EEx-codes, which depends on the meter
size range (see table below).
Marking IFS 4000 F-EEx-code
Meter size
EEx-code
DN10… DN20 II 2GD EEx me ib IIC T6…T3
DN25… DN150 II 2GD EEx de ib IIC T6…T3
DN200…DN300 II 2GD EEx qe ib IIC T6…T3
larger than DN300 II 2GD EEx e ib IIC T6…T3
Also see the EC-type examination certificate in Section 5 of these additional instructions.