VEGA VEGAPULS 62 (≥ 2.0.0 - ≥ 4.0.0) HART and accumulator pack - Manual (Page 11)

11
3 Product description
VEGAPULS 62 • HART and accumulator pack
40793-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 PS60HK.-
•
Electronics with increased sensitivity type PS60HS.-
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 62 radar sensor can be used in a wide variety of ap-
plications for continuous level measurement of liquids. It is suitable for
applications in storage vessels, reactors and process vessels, even
under extremely difficult process conditions.
Dependent on the application range, different versions are used:
•
Antenna
– Small tanks and process vessels, measurement of virtually all
products: Horn antenna ø 40 mm
– Storage tanks and process vessels, measurement of products
such as solvents, hydrocarbons and fuels under extremely dif-
ficult process conditions: Horn antenna ø 48 … 95 mm
– Products with low ε
r
value with large measuring distances:
Parabolic antenna
•
Electronics
– Products with an ε
r
value ≥1.8: Standard electronics
– Products with an ε
r
value < 1.8, ≥1.5; applications with very bad
reflective properties: Electronics with increased sensitivity
The actual values that can be reached depend on the measurement
conditions, the antenna system or 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.
Versions
Scope of delivery
Application area
Functional principle
Voltage supply