VEGA VEGAPULS 68 (≥ 2.0.0 - ≤ 3.8) 4 … 20 mA_HART four-wire - Manual (Page 10)

l T he version with horn antenna is particularly suitable for
measurement of virtually all bulk solids in small silos and vessels.
l T he version with parabolic antenna is particularly suitable for large
silos and vessels with up to 70 m (76 yd) measuring distance and
for measurement of solids with low dielectric constant.
VEGAPULS 68 is also suitable for applications in liquids.
T he 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 running 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
appropriate output signal and outputted as measured value.
F our-wire electronics with separate power supply.
T he supply voltage range can differ depending on the instrument
version.
T he data for power supply are specified in chapter "Technical data".
M easured value transmission is carried out via the 4 … 20 mA/HART
output separate from power supply.
T he background lighting of the indicating and adjustment module is
powered by the sensor. A certain level of operating voltage is required
for this. You can find the exact voltage specifications in chapter
"
Technical data".
3.3 Operation
VEGAPULS 68 can be adjusted with different adjustment media:
l
with indicating and adjustment module
l
with the suitable VEGA DTM in conjunction with an adjustment
software according to the FDT/DTM standard, e.g. PACTware and
PC
l
with manufacturer-specific adjustment programs AMS™ or PDM
l W
ith a HART handheld
T he entered parameters are generally saved in VEGAPULS 68,
optionally also in the indicating and adjustment module or in
PACT
ware.
3.4 Packaging, transport and storage
Y our instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
according to DIN EN 24180.
T he 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.
Functional principle
Power supply
Packaging
10 VEGAPULS 68 • 4 … 20 mA/HART four-wire
3 P roduct description
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-EN
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