6
57-651 Eclipse
®
SIL Certified Safety Manual for Enhanced Model 705-51AX-XXX
5.0
Instructions
5.1
Systematic Limitations
The following must be observed to avoid systematic failures:
5.1.1 Application
As the probe configuration establishes the fundamental per-
formance characteristics of the system, choosing the proper
Guided Wave Radar probe is the most important decision
in the specification/application process. Coaxial, twin ele-
ment (rod or cable), and single element (rod or cable) are
the three basic GWR probe configurations. The probe for
use with the SIL 2/3 certified Enhanced ECLIPSE Model 705
must be selected as appropriate for the application (e.g.,
careful selection of probe design and materials for a specific
application will minimize media buildup on the probe).
Refer to Section 3.3.3 of Installation and Operating Manual
57-600 for more detailed application information regarding
media buildup and bridging.
5.1.2 Environmental
Refer to Section 3.6 of Installation and Operating Manual
57-600 for the Model 705 Environmental Specifications.
5.2
Skill Level of Personnel
Personnel following the procedures in this safety manual
should have technical expertise equal to or greater than that
of a qualified Instrument Technician.
5.3
Necessary Tools
Following are the necessary tools required to carry out the
prescribed procedures:
• Open-wrenches or adjustable wrench to fit the process con-
nection size and type.
•
Coaxial probe
1
1
⁄
2
" (38mm)
•
Twin Rod probe
1
7
⁄
8
" (47mm)
•
Transmitter
1
1
⁄
2
" (38mm)
•
Torque wrench is highly desirable
• Flat-blade screwdriver
• Cable cutter and
3
⁄
32
" (2.5mm) hex wrench (7X1, 7X2, 7X5
and 7X7 Flexible probes only)
• Digital multimeters or digital volt/ammeter
• 24 VDC power supply, 23 mA minimum
