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57-657 SIL Certified Safety Manual for ECLIPSE Model 706
3.1 Miscellaneous Electrical Considerations
Following are miscellaneous electrical issues to be considered
in a safety system.
3.1.1 Pollution Degree 2
The ECLIPSE Model 706 transmitter is designed for use
in a Category II, Pollution Degree 2 installation, which is
defined by a nonconductive pollution of the sort where
occasionally a temporary conductivity caused by condensation
must be expected.
This is the usual pollution degree used for equipment being
evaluated to IEC/EN 61010.
3.1.2 Electromagnetic Compatibility
The ECLIPSE Model 706 is designed to meet the require-
ments of EN 61326 and NAMUR NE21.
4.0 Mean Time To Repair (MTTR)
SIL determinations are based on a number of factors including
the Mean Time To Repair (MTTR). The analysis for the
ECLIPSE Model 706 is based on a MTTR of 24 hours.
5.0 Supplementary Documentation
• The ECLIPSE Model 706 Installation and Operating
Manual 57-606 must be available to ensure proper
installation of the transmitter.
• The following Electronic Device Description File is required
if HART is used:
• Manufacturer Code 0x56
• Model 706 Device ID 0x56E0, device revision 1,
DD revision 2.
• For device installations in a classified area, the relevant safety
instructions and electrical codes must be followed.
6.0 General Instructions
6.1 Systematic Limitations
The following instructions must be observed to avoid
systematic failures:
6.1.1 Application
Choosing the proper Guided Wave Radar (GWR) probe is
the most important decision in the application process.
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