Vega VEGAPULS 63 Operating Instructions Manual page 55

10 mm (0.394 in)
3 mm (0.116 in)
0
- 3 mm (- 0.116 in)
- 10 mm (- 0.394 in)
Fig. 34: Deviation VEGAPULS 63
30 mm (1.180 in)
15 mm (0.590 in)
0
- 15 mm (- 0.590 in)
- 30 mm (- 1.180 in)
Fig. 35: Deviation VEGAPULS 63 with increased sensitivity in mm, measuring range in m
Influence of the ambient temperature to the sensor electronics
Average temperature coefficient of the
zero signal (temperature error)
Influence of the superimposed gas and pressure to the accuracy
The spreading speed of the radar impulses in gas or vapour above the product is reduced by high
pressures. This effect depends on the superimposed gas or vapour and increases with low tem-
peratures. The following chart shows the deviation caused by some typical gases or vapours. The
stated values refer to the distance. Positive values mean that the measured distance is too high,
negative values that the measured distance is too small.
Gas phase
Air/Nitrogen
Air/Nitrogen
Hydrogen
Hydrogen
Water (saturated
steam)
Water (saturated
steam)
Relating to the nominal measuring range, in the temperature range -40 ... +80 °C .
9)
VEGAPULS 63 • Profibus PA
0,5 m (1.6 ft)
1,0 m (3.280 ft)
Temperature 1 bar/14.5 psig
20 °C/68 °F 0.00 %
200 °C/392 °F 0.00 %
20 °C/68 °F -0.01 %
200 °C/392 °F -0.02 %
100 °C/212 °F 0.20 %
180 °C/356 °F -
0.03 %/10 K
10 bar/145 psig
0.22 %
0.13 %
0.10 %
0.05 %
-
2.1 %
10 Supplement
20 m (65.62 ft)
20 m (65.62 ft)
9)
50 bar/725 psig
1.2 %
0.74 %
0.61 %
0.37 %
-
-
55