KROHNE OPTIWAVE-7300IECEx User Manual
Supplementary instructions
Supplementary instructions
OPTIWAVE 7300 C
OPTIWAVE 7300 C
OPTIWAVE 7300 COPTIWAVE 7300 C
Supplementary instructions Supplementary instructions
Non-contact Radar (FMCW) Level Meter for liquids
Supplementary Instructions for IECEx applications
Supplementary Instructions for IECEx applications
Supplementary Instructions for IECEx applicationsSupplementary Instructions for IECEx applications
© KROHNE 10/2010 - 4000176502 - AD IECEX OPTIWAVE7300 R02 en
CONTENTS
OPTIWAVE 7300 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 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 7
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 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 / 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 17
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OPTIWAVE 7300 C
CONTENTS
5 Service 18
5.1 Periodic maintenance..................................................................................................... 18
5.2 Keep the device clean..................................................................................................... 18
5.3 Returning the device to the manufacturer..................................................................... 18
5.3.1 General information.............................................................................................................. 18
5.3.2 Form (for copying) to accompany a returned device............................................................ 19
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1 GENERAL SAFETY INFORMATION
1.1 Scope of the document
These instructions are applicable only to the explosion-protection version of the radar level
transmitter. For all other data, use the Quick Start and Handbook. If you do not have these
documents, please contact the nearest office or download them from the manufacturer's
internet site.
INFORMATION!
The information in these supplementary instructions only contains the data applicable to
explosion protection. The technical data for the non-Ex version in the Handbook shall be valid in
its current version, provided that it is not rendered invalid or replaced by these supplementary
instructions.
WARNING!
Installation, commissioning and maintenance may only be carried out by "Personnel trained in
explosion protection".
1.2 Device description
OPTIWAVE 7300 C
This device is a 2-wire level transmitter that uses FMCW (Frequency-Modulated Continuous
Wave) radar technology. It measures level, volume, distance to surface and reflectivity of liquids,
pastes and slurries. Measurements are displayed via a DTM (device type manager) for remote
communication or on an optional integrated display screen with wizard-driven setup and online
help functions.
The level transmitter is approved for use in potentially explosive atmospheres when equipped
with the appropriate options.
1.3 Standards and approvals
DANGER!
In compliance with IECEx scheme rules, the IECEx version of the device described in these
Supplementary Instructions conforms to International Standards IEC 60079-0:2004, IEC 600791:2007-04, IEC 60079-11:2006, IEC 60079-26:2006, IEC 61241-0:2004, IEC 61241-1:2004 and
IEC 61241-11:2005. The Ex ia / Ex iaD and Ex d[ia] / Ex tD[iaD] versions are certified for use in
hazardous areas by KEMA Quality B.V. under IECEx KEM 06.0025X.
WARNING!
Carefully read the IECEx approval certificate. Obey the boundary conditions.
The certificate is given on the CD-ROM supplied with the device. You can also download the
certificate from our internet site.
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OPTIWAVE 7300 C
GENERAL SAFETY INFORMATION 1
1.4 Equipment protection levels (EPL)
1.4.1 Ex ia / Ex iaD-approved devices
These devices are suitable for use in potentially explosive atmospheres of all flammable
substances in Gas Groups IIA, IIB and IIC. The Ex ia-approved device is certified for applications
for which an EPL of Ga, Ga/Gb or Gb is necessary. The Ex iaD-approved device is certified for
zone 20, zone 21/20 or zone 21 (combustible dust atmospheres).
DANGER!
The device must be fitted with the appropriate options.
1.4.2 Ex d[ia] / Ex tD[iaD]-approved devices
These devices are suitable for use in potentially explosive atmospheres of all flammable
substances in Gas Groups IIA, IIB and IIC. The Ex d[ia]-approved device is certified for
applications for which an EPL of Ga/Gb or Gb is necessary. The Ex tD[iaD]-approved device is
certified for applications in zone 21/20 or zone 21 (combustible dust atmospheres).
DANGER!
The device must be fitted with the appropriate options.
1.4.3 Definitions of equipment protection levels
EPL Ga
EPL Ga
EPL GaEPL Ga
The device is installed in hazardous areas that must have equipment with a very high level of
protection. The device is not a source of ignition in usual conditions of operation or when
possible or unusual faults occur.
EPL Gb
EPL Gb
EPL GbEPL Gb
The device is installed in hazardous areas that must have equipment with a high level of
protection. The device is not a source of ignition in usual conditions of operation or when
possible faults occur. It is possible that this does not include frequent faults.
EPL Ga/Gb
EPL Ga/Gb
EPL Ga/GbEPL Ga/Gb
The signal converter is installed in hazardous areas that must have equipment with a high level
of protection. The antenna is installed in hazardous areas that must have equipment with a very
high level of protection.
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1 GENERAL SAFETY INFORMATION
1.5 IECEx nameplate
OPTIWAVE 7300 C
Figure 1-1: Ex ia / Ex iaD nameplate (4...20 mA output)
Figure 1-2: Ex d[ia] / Ex tD[iaD] nameplate (4...20 mA output)
1 IECEx certification agency code
2 Types of device protection for explosive atmospheres with gas, including approved Gas Groups (IIA, IIB or IIC) and tem-
perature classes (T6...T4 or T3 - depends on the antenna type) and equipment protection level
3 Types of device protection for explosive atmospheres with dust, zones, degree of ingress protection (if fitted with the
appropriate cable glands) and maximum surface temperature
4 Intrinsically-safe circuit data
5 Maximum voltage in accordance with IEC 60079-0
6 Minimum waiting time after power-off before it is safe to open the terminal compartment
7 Cable entry type and size (Aluminium housing: M26×1.5, M20×1.5, ½NPT or G ½; Stainless steel housing: M25×1.5,
M20×1.5, ½ NPT or G ½)
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