KROHNE OPTIFLEX 4300C ATEX EN - Manual (Page 2)

CONTENTS
2 www.krohne.com 02/2009 - 4000523601 - AD ATEX OPTIFLEX 4300 R01 en
OPTIFLEX 4300 C
1 General safety information 4
1.1 Scope of the document..................................................................................................... 4
1.2 Device description ............................................................................................................ 4
1.3 Standards and approvals.................................................................................................. 4
1.4 Device categories ............................................................................................................. 5
1.5 ATEX nameplates.............................................................................................................. 5
2 Installation 7
2.1 Precautions....................................................................................................................... 7
2.1.1 General notes.......................................................................................................................... 7
2.1.2 Electrostatic discharge........................................................................................................... 7
2.1.3 Special conditions ................................................................................................................... 8
2.2 Operating conditions ........................................................................................................ 8
2.2.1 Ambient and flange temperature ........................................................................................... 8
2.2.2 Maximum surface temperature of the housing ................................................................... 11
2.2.3 Process pressure.................................................................................................................. 11
3 Electrical connections 12
3.1 General notes ................................................................................................................. 12
3.2 Terminal compartment .................................................................................................. 12
3.2.1 How to open the terminal compartment .............................................................................. 12
3.2.2 How to close the terminal compartment............................................................................. 13
3.3 Terminal tightening capacity.......................................................................................... 13
3.4 Equipotential bonding system........................................................................................ 13
3.5 Ex ia equipment .............................................................................................................. 13
3.5.1 How to connect the electrical cables ................................................................................... 13
3.5.2 Maximum intrinsically-safe values for the electrical circuit ............................................... 14
3.5.3 Supply voltage ....................................................................................................................... 14
3.5.4 Electrical schema ................................................................................................................. 15
3.6 Ex d [ia] equipment......................................................................................................... 15
3.6.1 General notes........................................................................................................................ 15
3.6.2 How to connect the electrical cables ................................................................................... 16
3.6.3 Supply voltage ....................................................................................................................... 17
3.6.4 Electrical schema ................................................................................................................. 17
4 Start-up 18
5 Service 19
5.1 Periodic maintenance..................................................................................................... 19
5.2 Keep the device clean..................................................................................................... 19
5.3 Returning the device to the manufacturer..................................................................... 19
5.3.1 General information.............................................................................................................. 19
5.3.2 Form (for copying) to accompany a returned device............................................................ 20
6 Approval certificate 21
AD_ATEX_OPTIFLEX4300_en_090528_4000523601_R01_D5D.book Page 2 Thursday, May 28, 2009 6:00 PM