KROHNE OPTIFLUX 4040 C Ex EN - Manual (Page 2)

CONTENTS
2 www.krohne.com 09/2010 - 7312232100 - AD EX OPTIFLUX 4040 C R01 en
OPTIFLUX 4040 C
1 Introduction 3
1.1 Safety instructions from the manufacturer ..................................................................... 3
1.1.1 Disclaimer ............................................................................................................................... 3
1.1.2 Product liability and warranty ................................................................................................ 4
1.1.3 Information concerning the documentation........................................................................... 4
1.1.4 Warnings and symbols used................................................................................................... 5
1.1.5 Manufacturer .......................................................................................................................... 5
1.2 Safety instructions for the operator................................................................................. 6
1.3 Approval............................................................................................................................ 6
1.4 General description .......................................................................................................... 6
1.4.1 Flow sensor............................................................................................................................. 7
1.4.2 Signal converter...................................................................................................................... 7
1.5 Nameplates ...................................................................................................................... 8
2 Temperature limits 9
2.1 Temperatures ................................................................................................................... 9
3 Electrical connections 10
3.1 Equipotential bonding system........................................................................................ 10
3.2 Terminal arrangment ..................................................................................................... 10
3.3 Description of the output circuits................................................................................... 11
3.4 Safety-technical data...................................................................................................... 12
3.5 Connection examples ..................................................................................................... 13
3.5.1 Example of OPTIFLUX 4040 C-EEx in 2-wire mode.............................................................. 13
3.5.2 Example of OPTIFLUX 4040 C-EEx in 2x2-wire mode (4-wire) ............................................ 14
4 Operation 16
5 Maintenance and service 17
5.1 Maintenance ................................................................................................................... 17
5.2 Replacement of electronics unit .................................................................................... 17
6 Notes 19