VEGA VEGAPULS 66 (≥ 2.0.0 - ≥ 4.0.0) HART and accumulator pack - Manual (Page 11)

11
3 Product description
VEGAPULS 66 • HART and accumulator pack
40933-EN-121011
The scope of delivery encompasses:
•
Radar sensor with integrated accumulator
•
Battery charger
•
Documentation
– this operating instructions manual
– Test certificate measuring accuracy (optional)
– Operating instructions manual "Indicating and adjustment
module" (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.
The instrument is powered via an integrated accumulator. This allows
operation of the instrument independently of the mains or a control
system. To achieve a longer battery lifetime, the instrument is preset
to HART multidrop. This puts a load of only 4 mA current on the ac-
cumulator.
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
according to DIN EN 24180.
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.
Scope of delivery
Application area
Functional principle
Voltage supply
Packaging