KROHNE VARIFLUX IFM 6080 K-EEx-i-EEx EN - Manual (Page 6)

ALTOFLUX IFM x080 K-EEx and ALTOFLUX IFM x080 K / i-EEx 6
1.2 General information PROFIFLUX IFM 5080 K / … EEx
This compact flowmeter complies with the European Directive 94/9/EC (ATEX 100a) and has been
approved for hazardous classified locations of Zone 1 and 2 under EC-type Examination Certificate
number:
KEMA 01 ATEX 2262 X
The compact flowmeter is available in two types, namely:
• IFM 5080 K-EEx regular explosion protected version;
• IFM 5080 K/i-EEx, MODIS version. This type has intrinsical safe signal output circuits, which are
provided by two on the IFC 090i-EEx electronics unit installed MODIS modules (see Sect. 1.5 for
details).
The regular IFM 5080 K-EEx compact flowmeter as well as the so-called MODIS version type IFM
5080 K/i-EEx is designed for ambient temperatures (T
a
) of -20°C up to +60°C. The allowed process
liquid temperature is limited by the maximum occuring surface temperature of system components in
the combustible atmosphere that (possibly) surrounds the apparatus, determined by the temperature
class of the atmosphere, see table 1 below.
Temperature classification
Maximum process liquid temperature Temperature
class Max. surface
temperature
T
a
≤ 40°C T
a
≤ 50°C T
a
≤60 °C
T6 T80°C 60°C 55°C not allowed
T5 T95°C 75°C 75°C 70°C
T4 T130°C 115°C 115°C 75°C
T3 T165°C 155°C 135°C 75°C
The IFM 5080 K/…-EEx compact flowmeter consists of the IFC 090/…-EEx signal converter unit, which
is screwed on top of the IFS 5000-EEx primary head (i.e. measuring unit). The compact flowmeter is
marked with the following code below:
II 2 GD EEx dme [ib] IIC T6…T3
In case of the MODIS version IFM 5080 K/i-EEx, the electronics unit of type IFC 090i-EEx is provided
with protective modules, which provide intrinsical safe output signals of category "ia". The flowmeter is
then marked with the code
II 2 GD EEx dme [ib] [ia] IIC T6…T3
For details see the EC-type Examination Certificate in Sect. 8.2 at the end of these additional
instructions.