72
11 Supplement
VEGAPULS 64 • 4 … 20 mA/HART - two-wire
51141-EN-160815
0,25 m (0.8202 ft)
10 mm (0.3937 in)
- 10 mm (- 0.3937 in)
2 mm (0.079 in)
- 2 mm (- 0.079 in)
0
1 2
3
Fig. 55: Deviation under reference conditions - plastic horn antenna
1 Reference plane
2 Antenna edge
3 Recommended measuring range
0,25 m (0.8202 ft)
10 mm (0.3937 in)
- 10 mm (- 0.3937 in)
0
2 mm (0.079 in)
- 2 mm (- 0.079 in)
1
3
2
Fig. 56: Deviation under reference conditions - flange with encapsulated antenna system
1 Reference plane
2 Antenna edge
3 Recommended measuring range
Repeatability
≤ ±1 mm
Deviation with bulk solids
The values depend to a great extent on the application.
Binding specifications are thus not possible.
Variables influencing measurement accuracy
Specifications apply to the digital measured value
Temperature drift - Digital output
±3 mm/10 K, max. 10 mm
Specifications apply also to the current output
Temperature drift - Current output
±0.03 %/10 K relating to the 16 mA span max. ±0.3 %
Additional deviation through electromagnetic interference
Ʋ According to NAMUR NE 21
< ±80 µA
Ʋ According to EN 61326-1
None
