VEGA VEGAPULS 56 Profibus PA - Manual (Page 6)

6 VEGAPULS 56 Profibus PA
1.2 Application features
Applications
• level measurement of liquids, limited use in
solids
• measurement also in vacuum
• all slightly conductive materials and all
substances with a dielectric constant
ε
r
> 2.0 can be measured
• measuring ranges 0 … 20 m
Two-wire technology
• power supply and output signal on one
two-wire cable
• digital output signal
Rugged and abrasionproof
• non-contact
• high resistance materials
Exact and reliable
• resolution 1 mm
• unaffected by noise, vapours, dusts, gas
compositions and inert gas stratification
• unaffected by varying density and tem-
perature of the medium
• measurement of pressures up to 64 bar
and product temperatures up to 350°C
Communicative
• individual wiring, with 15 sensors on one
two-wire cable (digital output signal)
• integrated measured value display
• optional display module up to 25 m sepa-
rate from the sensor
• connection to all bus systems: Interbus S,
Modbus, Siemens 3964R, Profibus DP,
Profibus FMS, ASCII
• adjustment from PLC level
Ex approvals
• CENELEC, FM, ABS, LRS, GL, LR, ATEX,
PTB, FCC
Product description
The signal reflection grows stronger with
increasing product conductivity or dielectric
constant. Hence virtually all products can be
measured.
With standard flanges of DN 50 to DN 250,
ANSI 2“ to ANSI 10“ the sensor antenna sys-
tems can be adapted to various products
and measuring environments. The high-
quality materials of the sensors can also
withstand extreme chemical and physical
conditions. The sensors deliver stable, repro-
ducible analogue or digital level signals with
reliability and precision, and have a long
useful life.
Continuous and reliable
Unaffected by temperature, pressure and
individual gas atmospheres, VEGAPULS
radar sensors are ideal for non-contact, fast
and accurate level measurement of various
products.
VEGAPULS series 56 sensors enable level
measurement with radar in systems where it
was previously not used due to high costs.
Temperature influence: Temperature error absolutely
zero (e.g. at 500°C 0.018 %)
Pressure influence: Error with pressure increase very
low (e.g. at 50 bar 1.44 %)
100 500 1000 1300 ˚C 0
0
0,01
0,02
0,03
%
0,018 %
0,023 %
10
0
0
5
%
0,8 %
3 %
10
50
20 30 40 60
100
70 80 90 110 120 130 140
bar