KROHNE OPTISONIC 7300 Ex EN - Manual (Page 2)

CONTENTS
2 www.krohne.com 05/2012 - 7312262200 - AD EX OPTISONIC 7300/8300 R02
OPTISONIC 7300 / 8300
1 Introduction 4
1.1 Safety instructions from the manufacturer ..................................................................... 4
1.1.1 Copyright and data protection ................................................................................................ 4
1.1.2 Disclaimer ............................................................................................................................... 4
1.1.3 Information concerning the documentation........................................................................... 5
1.1.4 Warnings and symbols used................................................................................................... 6
1.2 Safety instructions for the operator................................................................................. 7
1.3 Approval............................................................................................................................ 8
1.4 OPTISONIC 7300 C/...-Ex .................................................................................................. 8
1.5 OPTISONIC 7000...-Ex....................................................................................................... 8
1.6 OPTISONIC 8000...-Ex....................................................................................................... 9
1.7 GFC 300 F/...-Ex................................................................................................................ 9
1.8 Ultrasonic gas transducers.............................................................................................. 9
1.9 Technical data................................................................................................................. 10
1.10 Marking codes .............................................................................................................. 10
1.11 Marking labels .............................................................................................................. 12
2 Temperature limits 16
2.1 General ........................................................................................................................... 16
2.2 GFC 300 F/...-Ex.............................................................................................................. 16
2.3 OPTISONIC 7300 C/...-Ex ................................................................................................ 16
2.4 OPTISONIC 7000...-Ex..................................................................................................... 17
2.5 OPTISONIC 8000...-Ex..................................................................................................... 17
3 Connection of separate systems 18
3.1 General ........................................................................................................................... 18
3.2 Cable marking ................................................................................................................ 18
3.2.1 Sensor ................................................................................................................................... 18
3.2.2 Converter............................................................................................................................... 20
3.3 Equipotential bonding..................................................................................................... 21
4 Electrical connections 22
4.1 General ........................................................................................................................... 22
4.2 Non-"Ex i" I/O connections............................................................................................. 25
4.3 "Ex i" I/O connections ..................................................................................................... 27
5 Maintenance 29
5.1 Maintenance ................................................................................................................... 29
5.2 Before and after opening................................................................................................ 29
5.3 Replacement of mains fuse............................................................................................ 30
5.4 Exchange of electronics unit .......................................................................................... 31
5.4.1 Field version.......................................................................................................................... 32
5.5 Service / repair information ........................................................................................... 34