37
13 Supplement
VEGAPULS C 21 • SDI-12
58342-EN-200121
0,25 m (0.8202 ft)
10 mm (0.3937 in)
- 10 mm (- 0.3937 in)
2 mm (0.0787 in)
- 2 mm (- 0.0787 in)
0
1
2
Fig. 22: Deviation under reference conditions
1 Antenna edge, reference plane
2 Recommended measuring range
Variables influencing measurement accuracy
Temperature drift - Digital output
< 3 mm/10 K, max. 10 mm
Additional deviation through electromag-
netic interference acc. to EN 61326
< 50 mm
Characteristics and performance data
Measuring frequency
W-band (80 GHz technology)
Measuring cycle time
≤ 250 ms
Step response time
5)
≤ 3 s
Beam angle
6)
8°
Emitted HF power (depending on the parameter setting)
7)
Ʋ Average spectral transmission power
density
-3 dBm/MHz EIRP
Ʋ Max. spectral transmission power
density
+34 dBm/50 MHz EIRP
Ʋ Max. power density at a distance of
1 m
< 3 µW/cm²
Ambient conditions
Ambient temperature
-40 … +80 °C (-40 … +176 °F)
Storage and transport temperature
-40 … +80 °C (-40 … +176 °F)
Mechanical environmental conditions
Sinusoidal vibrations
Class 4M8 acc. to IEC 60271-3-4
Impacts
50 g, 2.3 ms acc. to IEC 60271-3-6 (mechanical shock)
Impact resistance
IK07 acc. to IEC 62262
5)
Time span after a sudden distance change from 1 m to 5 m until the output signal reaches 90 % of the final
value for the first time (IEC 61298-2). Valid with operating voltage U
B
≥ 24 V DC.
6)
Outside the specified beam angle, the energy level of the radar signal is 50% (-3 dB) less.
7)
EIRP: Equivalent Isotropic Radiated Power
