KROHNE OPTISOUND 3020C 4wire EN - Manual (Page 38)

Accuracy (similar to DIN EN 60770-1)
Reference conditions acc. to DIN EN 61298-1
- Temperature
18 … +30°C (64 … +86°F)
- Relative humidity 45 … 75 %
- Atmospheric pressure 860 … 1060 mbar (86 … 106 kPa/
12.5 … 15.4 psi)
Characteristic curve deviation and measurement characteristics 3)
Average temperature coefficient of the
zero signal (temperature error)
0.06 %/10 K
Resolution, general max. 1 mm
Ultrasonic frequency 55 kHz
Interval > 2 s (dependent on the parameter adjustment)
Beam angle at -3 dB 5.5°
Adjustment time 4) >3 s (dependent on the parameter adjustment)
Accuracy better than 0.2 % or ±4 mm (see diagram)
8 m 4 m 3 m 2 m 7 m 6 m 5 m 1 m
10 mm
16 mm
4 mm
-4 mm
-10 mm
-16 mm
Fig. 22: Accuracy OPTISOUND 3020 C
3) Relating to the nominal range, incl. hysteresis and repeatability, determined
acc. to the limit point method.
4) Time to output the correct level (with max. 10 % deviation) after a sudden
level change.
38 OPTISOUND 3020 C - 4 ... 20 mA/HART - four-wire
Supplement
30508
-EN
-050914