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VEGA VEGAPULS 68 (≥ 2.0.0 - ≤ 3.8) 4 … 20 mA_HART four-wire User Manual

Page 53

background image

-

A

verage power

<

25 µW

-

A

verage power with 1 m distance

<

1 µW/

cm

2

Measuring accuracy

R

esolution, general

max. 1 mm (0.039 in)

D

eviation

5)

see diagrams

30 mm (1.180 in)

15 mm (0.590 in)

0

-15 mm (- 0.590 in)

- 30 mm (- 1.180 in)

1,0 m (3.280 ft)

70 m (229.7 ft)

Fig. 29: Deviation VEGAPULS 68 with horn antenna

2,0 m (6.562 ft)

70 m (229,7 ft)

40 mm (1.574 in)

15 mm (0.590 in)

- 15 mm (- 0.590 in)

- 40 mm (- 1.574 in)

0

Fig. 30: Accuracy VEGAPULS 68 with parabolic antenna

Influence of the ambient temperature to the sensor electronics

6)

A

verage temperature coefficient of the zero

signal (temperature error)

0.03 %/10 K

5)

I

ncl. non-linearity, hysteresis and non-repeatability.

6)

R

elating to the nominal measuring range, in the temperature range

-40 … +80 °C .

VEGAPULS

68 • 4 … 20

mA/HART four-wire

53

10 S

upplement

29262

-EN

-090305