VEGA VEGAFLEX 86 4 … 20 mA_HART two-wire Rod and cable probe With SIL qualification - Manual (Page 11)

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3 Product description
VEGAFLEX 86 • 4 … 20 mA/HART two-wire
44234-EN-130823
•
Enter the serial number manually in the app
This operating instructions manual applies to the following instrument
versions:
•
Hardware from 1.0.0
•
Software from 1.0.0
•
DTM from version 1.67.2
The instrument and the electronics version can be determined via the
product code on the type label as well as on the electronics.
•
Standard electronics: Type FX80H.-SIL
The scope of delivery encompasses:
•
Sensor
•
Documentation
– this operating instructions manual
– Safety Manual (SIL)
– Test certificate measuring accuracy (optional)
– Operating instructions manual "Display and adjustment mod-
ule" (optional)
– Supplementary instructions "GSM/GPRS radio module"
(optional)
– Supplementary instructions manual "Heating for display and
adjustment module" (optional)
– Supplementary instructions manual "Plug connector for con-
tinuously measuring sensors" (optional)
– Ex-specific "Safety instructions" (with Ex versions)
– if necessary, further certificates
3.2 Principle of operation
The VEGAFLEX 86 is a level sensor with cable or rod probe for
continuous level or interface measurement, particularly suitable for
applications in high temperatures up to +450 °C (842 °F).
Due to the qualification up to SIL2 or homogeneous redundant up to
SIL3 (IEC 61508) the VEGAFLEX 86 is suitable for the use in safety-
instrumented systems (SIS).
The safety function (SIF) can be a monitoring of the max. or min. level
or a combination of both.
High frequency microwave pulses are guided along a steel cable or
a rod. Upon reaching the product surface, the microwave pulses are
reflected. The running time is evaluated by the instrument and output-
ted as level.
Scope of this operating
instructions manual
Versions
Scope of delivery
Application area
Functional principle -
level measurement