Vega VEGAPULS 64 Operating Instructions Manual page 68

11 Supplement
Deviation with bulk solids
10 mm (0.3937 in)
1 mm (0.039 in)
- 1 mm (- 0.039 in) 0
- 10 mm (- 0.3937 in)
Fig. 53: Deviation under reference conditions (example: thread with integrated horn antenna, applies accordingly
to all versions)
1 Reference plane
2 Antenna edge
3 Recommended measuring range
Variables influencing measurement accuracy
Specifications apply to the digital measured value
Temperature drift - Digital output
Specifications apply also to the current output
Temperature drift - Current output
Deviation in the current output due to
digital/analogue conversion
Additional deviation through electromagnetic interference
Ʋ According to NAMUR NE 21
Ʋ According to EN 61326-1
Ʋ According to IACS E10 (shipbuilding)/
IEC 60945
Characteristics and performance data
Measuring frequency
Measuring cycle time approx.
Step response time
4)
Beam angle
5)
Version
Plastic horn antenna
Thread with integrated horn antenna
With operating voltage U
3)
Time span after a sudden distance change from 1 m to 5 m until the output signal reaches 90 % of the final
4)
value for the first time (IEC 61298-2). Valid with operating voltage U
Outside the specified beam angle, the energy level of the radar signal is 50% (-3 dB) less.
5)
68
The values depend to a great extent on the application.
Binding specifications are thus not possible.
0,25 m (0.8202 ft)
1 2
< 3 mm/10 K, max. 10 mm
< 0,03 %/10 K relating to the 16 mA span or max. ±0.3 %
< 15 µA
< 80 µA
None
< 250 µA
W-band (80 GHz technology)
700 ms
3)
≤ 3 s
Size
DN 80
G¾, ¾ NPT
G1½, 1½ NPT
≥ 24 V DC
B
≥ 24 V DC
B
VEGAPULS 64 • HART and accumulator pack
3
Beam angle
3°
14°
7°