VEGA VEGAPULS 41 Profibus PA - Manual (Page 47)

VEGAPULS 41 – Profibus PA 47
27292-EN-041227
Technical data
Characteristics 1)
(typical values under reference conditions, all statements relate to the nominal measuring
range)
Min. span between
full and empty > 10 mm (recommended > 50 mm)
Frequency 26 GHz
Intervals
- two-wire sensor 0.6 s
- four-wire sensor 0.5 s
Beam angle (at -3 dB) 22°
Adjustment time (response time) 2) > 1 s (depending on parameter setting)
Influence of the process temperature at 0 bar not measurable;
at 5 bar 0.004 %/10 °K;
at 40 bar 0.03 %/10 °K
Influence of the process pressure 0.0265 %/bar
Emitted radar power (average) 0.717 µW
Received average emitted power 3)
- distance 1 m 0.4 … 3.2 nW per cm² (0.4 … 3.2 x 10 -9 W/cm²)
- distance 5 m 0.02 … 0.13 nW per cm²
Ex technical data
Comprehensive data in separate approval documents
Connection cables
Two-wire sensors power supply and signal via one two-wire
cable
Four-wire sensor power supply and signal separate
Electrical connection
- cable entry for Aluminium and plastic housing:
one cable entry (four-wire: two cable entries)
and spring-loaded terminal connection
up to max. 2.5 mm
2 wire cross-section
- plug connection optional for plastic housing:
four-pole, polarity reversal-proof screw
connection (four-wire: two plug connections)
Cable entry
- ia terminal compartment 1 … 2 x M20 x 1.5 (cable-ø 5 … 9 mm) or
1 … 2 x ½“ NPT EEx d (cable-ø 3.1 … 8.7 mm
or 0.12 … 0.34 inch)
- Exd terminal compartment
(pressure-tight encapsulated) 1 x½“ NPT EEx d (cable-ø 3.1 … 8.7 mm or
0.12 … 0.34 inch)
Ground connection max. 4 mm²
Intermediate housing between
process flange and housing 1.4435
1) Similar to DIN 16 086, reference conditions acc. to IEC 770, e.g.
temperature 15 °C … 35 °C; moisture 45 % … 75 %; pressure 860 mbar … 1060 mbar
2) The adjustment time (also actuating time, response time or adjustment period) is the time required by the
sensor to output the correct level (with max. 10% deviation) after a sudden level change.
3) Average emitted power (electromagnetic energy) received by a body per cm² directly in front of the antenna.
The received emitted power depends on the antenna version and the distance.