VEGA VEGAPULS 66 (≥ 2.0.0 - ≥ 4.0.0) Foundation Fieldbus - Manual (Page 11)

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3 Product description
VEGAPULS 66 • Foundation Fieldbus
36522-EN-121011
The instrument is available in two different electronics versions. Each
version can be identified via the product code on the type label as
well as on the electronics.
•
Standard electronics type PS60FFC.-
•
Electronics with increased sensitivity type PS60FFS.-
The scope of delivery encompasses:
•
Radar sensor
•
Documentation
– this operating instructions manual
– Test certificate Measurement accuracy, depending on the
instrument VEGAPULS 66 (optional)
– Operating instructions manual "Indicating and adjustment mod-
ule PLICSCOM" (optional)
– Supplementary instructions "GSM/GPRS radio module"
(optional)
– Supplementary instructions manual "Heating for indicating 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 VEGAPULS 66 is a radar sensor for continuous level measure-
ment of liquids under difficult process conditions. It is suitable for
applications in storage tanks, process vessels or standpipes. The
instrument can be used universally thanks to the different antenna
versions.
The version with horn antenna is particularly suitable for the meas-
urement of liquids and bulk solids under extremely difficult process
conditions such as buildup, condensation and foam generation as
well as strong product movement.
With the version without antenna, the antenna system is formed in
conjunction with a measuring tube (surge or bypass tube). This ver-
sion is particularly suitable for measurement of solvents and liquid
gases.
The instrument can be used with products with an ε
r
value ≥1.8. The
actually achievable value depends on the measuring conditions, the
antenna system, the standpipe or bypass.
The antenna of the radar sensor emits short radar pulses with a
duration of approx. 1 ns. These pulses are reflected by the product
and received by the antenna as echoes. The transit time of the radar
pulses from emission to reception is proportional to the distance and
hence to the level. The determined level is converted into an appropri-
ate output signal and outputted as measured value.
Versions
Scope of delivery
Application area
Functional principle