1 system components – KROHNE ALTOFLUX 2W IFM 4042K EEx-ATEX EN User Manual
Page 3
ALTOFLUX 2W IFM 4042 K - EEx
3
1 System
components
1.1 General
information
General information The Altoflux 2W IFM 4042 K-EEx electromagnetic compact flowmeter in 2-
wire technology is in accordance with European Directive 94/9/EC (ATEX 100a) and approved
for hazardous classified locations of Zone 1 and 2 under:
KEMA 01 ATEX 2200 X
The IFM 4042 K-EEx compact flowmeter is designed for ambient temperatures in the range of
-40°C up to +60°C.
The allowed process liquid temperature is a.o. limited by the combustible atmosphere that
(possibly) surrounds the apparatus, which again is 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 25 - 150 with PFA liner
Temperature
class
Max. surface
temperature
Maximum process liquid temperature
(for gases)
(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
no
no
yes
Temperature classification DN 10 - 20 and >DN 200
Temperature
class
Max. surface
temperature
Maximum process liquid temperature
(for gases)
(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 115°C
75°C
*
T 150 °C for DN 10-20 and > DN 200
The IFM 4042 K-EEx flowmeter consists of the IFC 040-EEx signal converter unit, which is
screwed on top of the primary head (i.e. the 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 ("EEx e and d" terminal compartment)
• DN 25 - 150
II 2GD EEx de [ib] IIC T6…T3 ("EEx e and d" terminal compartment)
• DN 200 - 300
II 2GD EEx dqe [ib] IIC T6…T3 ("EEx e and d" terminal compartment)
• DN 350 and up
II 2GD EEx de [ib] IIC T6…T3
("EEx e" and "EEx d" terminal compartment)
For details see the EC-type examination certificate in Section 9 of these instructions.