VEGA VEGAPULS 62 (≥ 2.0.0 - ≥ 4.0.0) 4 … 20 mA_HART - two-wire, approval according to LPR radio standard User Manual
Page 69
-
QV (Fourth Value)
Scaled measured value
Resolution, digital
<
1 mm (0.039 in)
Accuracy (according to DIN EN 60770-1)
Process reference conditions according to DIN EN 61298-1
-
Temperature
+
18 … +30 °C (+64 … +86 °F)
-
Relative humidity
45 … 75 %
-
Air pressure
860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
Installation reference conditions
-
Min. distance to installations
>
200 mm (7.874 in)
-
Reflector
Corner reflector
-
False reflections
Largest false echo 20 dB smaller than the useful
echo
Deviation with liquids
See following diagrams
0,5 m (1.6 ft)
10 mm (0.394 in)
2 mm (0.079 in)
- 2 mm (- 0.079 in)
- 10 mm (- 0.394 in)
0
1 2
3
Fig. 48: Deviation under reference conditions
1
Reference plane
2
Antenna edge
3
Recommended measuring range
Reproducibility
≤ ±
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 HART signal and the current output
Temperature drift - Digital output
±
3 mm/10 K relating to the max. measuring range
or max. 10 mm
Additional deviation through strong, high
frequency electromagnetic fields acc. to EN
61326
<±
50 mm
VEGAPULS
62 • 4 … 20 mA/HART - two-wire, approval according to LPR radio standard
69
11 Supplement
41718
-EN
-120301