KROHNE VARIFLUX IFM 6080 K-EEx-i-EEx EN - Manual (Page 4)

ALTOFLUX IFM x080 K-EEx and ALTOFLUX IFM x080 K / i-EEx 4
1 System components
1.1 General information ALTOFLUX IFM 4080 K / … EEx
This meter 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 2200 X
The compact flowmeter is available in two types, namely:
IFM 4080 K-EEx regular explosion protected version;
IFM 4080 K/i-EEx, MODIS version. This type has intrinsically safe signal output circuits, which are pro-
vided by two on the IFC 090i-EEx electronics unit installed MODIS modules (see Sect. 1.5 for details).
The regular IFM 4080 K-EEx compact flowmeter is designed for ambient temperatures (T
a
) in the range
of -20 °C (special -40°C) up to +60°C, the MODIS version type IFM 4080 K/i-EEx is rated for ambient
temperatures from -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 (first column of the tables). See tables below for details.
For dusts the second column of the two below listed tables is applicable.
Temperature classification DN 10-20 and DN 200 and larger
Maximum process liquid temperature
Temperature class
(for gases)
Max. surface
temperature
(for dusts)
T
a
≤ 40°C T
a
≤ 50°C T
a
≤ 60°C
T6 T85°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 T180°C * / 150°C 150°C 115°C 75°C
* ) T 180 °C in case of size DN 200 and larger
Temperature classification DN 25…150 with PFA liner
Maximum process liquid temperature
Temperature class
(for gases)
Max. surface
temperature
(for dusts)
T
a
≤ 40°C T
a
≤ 50°C T
a
≤ 60°C
T6 T85°C 70°C 70°C 70°C
T5 T100°C 85°C 85°C 85°C
T4 T135°C 120°C 120°C 115°C
T3 T180°C 180°C 180°C 115°C
Use heat-resistant cables above - - 50°C
The IFM 4080 K / … EEx flowmeter consists of the IFC 090/…-EEx signal converter unit, which is
screwed on top of the primary head (i.e. measuring unit).
The compact flowmeter is marked with one of the codes below, depending on the meter size:
DN 10- 20 II 2GD EEx dme [ib] IIC T6…T3
(both EEx d and EEx e terminal compartment).
DN 25-150 II 2GD EEx d [ib] IIC T6…T3 (EEx d terminal compartment) or
II 2GD EEx de [ib] IIC T6…T3 (EEx e terminal compartment)
DN 200-300 II 2GD EEx dqe [ib] IIC T6…T3
(both EEx d and EEx e terminal compartment)
larger than DN 300 II 2GD EEx de [ib] IIC T6…T3
(both EEx d and EEx e terminal compartment)