KROHNE OPTIWAVE 7300 IECEx User Manual
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CONTENTS
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www.krohne.com
10/2010 - 4000176502 - AD IECEX OPTIWAVE7300 R02 en
OPTIWAVE 7300 C
1 General safety information
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1.1 Scope of the document..................................................................................................... 4
1.2 Device description ............................................................................................................ 4
1.3 Standards and approvals.................................................................................................. 4
1.4 Equipment protection levels (EPL)................................................................................... 5
1.4.1 Ex ia / Ex iaD-approved devices.............................................................................................. 5
1.4.2 Ex d[ia] / Ex tD[iaD]-approved devices ................................................................................... 5
1.4.3 Definitions of equipment protection levels ............................................................................ 5
1.5 IECEx nameplate .............................................................................................................. 6
2 Installation
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2.1 Precautions....................................................................................................................... 7
2.1.1 General notes.......................................................................................................................... 7
2.1.2 Electrostatic discharge........................................................................................................... 7
2.1.3 Special conditions ................................................................................................................... 8
2.1.4 Optional purging system......................................................................................................... 8
2.2 Operating conditions ........................................................................................................ 9
2.2.1 Ambient and flange temperature ........................................................................................... 9
2.2.2 Maximum surface temperature of the housing ................................................................... 11
2.2.3 Process pressure.................................................................................................................. 11
3 Electrical connections
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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 / Ex iaD 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 ................................................................................................................. 14
3.6 Ex d[ia] / Ex tD[iaD] equipment ...................................................................................... 15
3.6.1 General notes........................................................................................................................ 15
3.6.2 How to connect the electrical cables ................................................................................... 15
3.6.3 Supply voltage ....................................................................................................................... 16
3.6.4 Electrical schema ................................................................................................................. 16
4 Start-up
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