VEGA VEGAPULS 65 (≥ 2.0.0 - ≥ 4.0.0) Modbus and Levelmaster protocol - Manual (Page 11)

11
3 Product description
VEGAPULS 65 • Modbus and Levelmaster protocol
41365-EN-121011
2
1
Fig. 5: Position of Modbus and sensor electronics
1 Modbus electronics
2 Sensor electronics
This operating instructions manual applies to the following instrument
versions:
•
Hardware from 2.1.0
•
Software from 4.5.1
The scope of delivery encompasses:
•
Radar sensor
•
Documentation
– this operating instructions manual
– Test certificate Measurement accuracy, depending on the
instrument VEGAPULS 65 (optional)
– Operating instructions manual "Indicating and adjustment mod-
ule PLICSCOM" (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 65 is a radar sensor for continuous measurement of
liquids under simple process conditions. It is particularly suitable for
level measurement in vessels with small process fittings and under
simple process conditions.
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.
Scope of this operating
instructions manual
Scope of delivery
Application area
Functional principle