10
3 Product description
VEGAPULS 66 • 4 … 20 mA/HART - two-wire
28438-EN-170927
able for measurement of liquids and solids under extremely difficult
process conditions such as buildup, condensate and foam generation
as well as vigorous product movement.
With the version
without antenna horn
, the antenna system is
formed in conjunction with a measuring tube (surge or bypass tube).
This version is particularly suitable for measurement of solvents and
liquid gases.
For pressures up to 160 bar (2320 psi) and temperatures up to 400 °C
(752 °F) there are graphite seals and ceramic antenna cones avail-
able.
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.
4 … 20 mA/HART two-wire electronics for voltage supply and meas-
ured value transmission on the same cable.
The supply voltage range can differ depending on the instrument
version.
The data for power supply are specified in chapter "
Technical data
".
The backlight of the display and adjustment module is powered by
the sensor. The prerequisite for this is a supply voltage at a certain
level. The exact voltage specifications are stated in chapter "
Technical
data
".
The optional heating requires its own power supply. You can find
further details in the supplementary instructions manual "
Heating for
display and adjustment module
".
This function is generally not available for approved instruments.
3.3 Packaging, transport and storage
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
based on ISO 4180.
The packaging of standard instruments consists of environment-
friendly, recyclable cardboard. For special versions, PE foam or PE
foil is also used. Dispose of the packaging material via specialised
recycling companies.
Transport must be carried out in due consideration of the notes on the
transport packaging. Nonobservance of these instructions can cause
damage to the device.
The delivery must be checked for completeness and possible transit
damage immediately at receipt. Ascertained transit damage or con-
cealed defects must be appropriately dealt with.
Functional principle
Voltage supply
Packaging
Transport
Transport inspection
