Vega VEGAPULS 61 Operating Instructions Manual page 72

11 Supplement
10 mm (0.394 in)
2 mm (0.079 in)
0
- 2 mm (- 0.079 in)
- 10 mm (- 0.394 in)
1 2
Fig. 56: Deviation under reference conditions - plastic horn antenna
1 Reference plane
2 Antenna edge
3 Recommended measuring range
Repeatability
Deviation with bulk solids
Variables influencing measurement accuracy
Temperature drift - Digital output
Additional deviation through electromag-
netic interference acc. to EN 61326
Characteristics and performance data
Measuring frequency
Measuring cycle time
Step response time
1)
Beam angle
2)
Emitted HF power
3)
Ʋ Average spectral transmission power
density
Ʋ Max. spectral transmission power
density
Ʋ Max. power density at a distance of
1 m
Ambient conditions
Ambient, storage and transport tempera-
ture
Time span after a sudden measuring distance change by max. 0.5 m in liquid applications, max 2 m with bulk
1)
solids applications, until the output signal has taken for the first time 90 % of the final value (IEC 61298-2).
Outside the specified beam angle, the energy of the radar signal is reduced by 50 % (-3 dB)
2)
EIRP: Equivalent Isotropic Radiated Power
3)
72
0,5 m (1.6 ft)
≤ ±1 mm
The values depend to a great extent on the application.
Binding specifications are thus not possible.
±3 mm/10 K, max. 10 mm
< ±50 mm
K-band (26 GHz technology)
450 ms
≤ 3 s
10°
-34 dBm/MHz EIRP
+6 dBm/50 MHz EIRP
< 1 µW/cm²
-40 ... +80 °C (-40 ... +176 °F)
3
VEGAPULS 61 • Foundation Fieldbus