Download Operating Instructions VEGAPULS 68

11 Supplement
Input variable
Measured variable
The measured quantity is the distance between process
fittingofthesensorandproductsurface.Thereference
plane is the seal surface on the hexagon or the lower
sideoftheflange.
1
3
4
2
Fig. 53: Data of the input variable
1
2
3
4
Reference plane
Measured variable, max. measuring range
Antenna length
Usefulmeasuringrange
Max. measuring range
75 m (246.1 ft)
Recommended meas. range depending on the antenna diameter
Ʋ ø 40 mm (1.575 in)
Ʋ ø 48 mm (1.89 in)
Ʋ ø 75 mm (2.953 in)
Ʋ ø 95 mm (3.74 in)
36535-EN-140209
Ʋ Parabolic antenna
up to 15 m (49.21 ft)
up to 20 m (65.62 ft)
up to 40 m (131.2 ft)
up to 50 m (164 ft)
up to 75 m (246.1 ft)
Output variable
Output signal
4 … 20 mA/HART
Signal resolution
0.3 µA
Range of the output signal
Resolution, digital
3.8 … 20.5 mA/HART (default setting)
< 1 mm (0.039 in)
Failure signal current output (adjustable) mA-value unchanged 20.5 mA, 22 mA, < 3.6 mA
Max. output current
22 mA
VEGAPULS 68 • 4 … 20 mA/HART two-wire
69