VEGA VEGAPULS 62 (≥ 2.0.0 - ≤ 3.8) 4 … 20 mA_HART four-wire - Manual (Page 54)

2,0 m
(6.562 ft)
30 m
(98.43 ft)
40 mm (1.574 in)
3 mm (0.116 in)
- 3 mm (- 0.116 in)
- 40 mm (- 1.574 in)
0
Fig. 32: Deviation VEGAPULS 62 with parabolic antenna
2,0 m
(6.562 ft)
30 m
(98.43 ft)
40 mm (1.574 in)
15 mm (0.590 in)
- 15 mm (- 0.590 in)
- 40 mm (- 1.574 in)
0
Fig. 33: Deviation VEGAPULS 62 with parabolic antenna and increased sensitivity
Influence of the ambient temperature to the sensor electronics 6)
A verage temperature coefficient of the zero
signal (temperature error)
0.03 %/10 K
Influence of the superimposed gas and pressure to the accuracy
T he 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
temperatures. The following chart shows the deviation caused by some typical gases or vapours.
T
he 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.
6) R elating to the nominal measuring range, in the temperature range
-40 … +80 °C .
54 VEGAPULS 62 • 4 … 20 mA/HART four-wire
10 S upplement
28440
-EN
-090305