KROHNE ALTOFLUX 2W IFM 4042K EEx-ATEX EN - Manual (Page 2)

2 ALTOFLUX 2W IFM 4042 K - EEx
Warning!
• No safety technical changes may be made to the devices. Unauthorized changes might affect
the explosion safety of the devices.
• These additional instructions are an extension to the Installation and Operating Instructions
and only applies for the EEx version of the IFM 4042 K magnetic-inductive compact
flowmeter. All technical information described in the Installation and Operating Instructions
are applicable, when not specifically excluded or replaced by the instructions in these
additional instructions.
Contents
1 System
components 3
1.1 General information 3
1.2 Data plates 4
1.3 Primary head 4
1.4 IFC 040-EEx signal converter 5
1.4.1 Electronics compartment 5
1.4.2 Terminal compartment 5
1.5 Cable or conduit entries 5
2 Electrical
connection 6
2.1 Equipotential bonding system 6
2.2 Terminal arrangement 6
2.3 Description of the output circuits 6
2.4 Connection diagram 8
2.5 Safety-technical data 9
2.6 Connection examples 9
2.6.1 Example of IFM 4042 K in 2-wire mode 9
2.6.2 Example of IFM 4042 K in 2×2-wire mode (4-wire) 10
3
Operation of the signal converter 11
4 Maintenance 11
5 Ordering information 11
6 Technical data 11
7
Replacement of electronic unit 12
7.1 Removal of the electronics unit 12
7.2 Inseration of the electronics unit 12
8
EC Declaration of conformity 13
9 EC-Type examination certificate 14
Be sure to follow these instructions!
Important!
• The prescriptions and regulations as well as the electrical data described in the EC-type
examination certificate must be obeyed.
• Beside the instructions for electrical installations in non-hazardous locations according to the
applicable national standard (equivalent of IEC 364, e.g. VDE 0100), especially the
regulations in EN 60079-14 "Electrical installations in hazardous locations" or equivalent
national standard must be followed.
• Installation, establishment, utilization and maintenance are only allowed to be executed by
personnel with an education in explosion safety!