KROHNE OPTISOUND 3010 C, Handbook

Page: 44 / 52

44
9 Supplement
OPTISOUND 3010 C • Four-wire 4 … 20 mA/HART
30504-EN-220310
Fault signal, current output (adjustable) mA-value unchanged 20.5 mA, 22 mA, < 3.6 mA
Current limitation
22 mA
Load < 500 Ω
9)
Damping (63 % of the input variable) 0 … 999 s, adjustable
Met NAMUR recommendation NE 43
Deviation
Deviation
10)
≤ 4 mm (meas. distance ≤ 2.0 m/6.562 ft)
5 m 4 m 3 m 2 m 1 m
10 mm
4 mm
-4 mm
-10 mm
Fig. 25: Deviation OPTISOUND 3010 C
Reference conditions to measurement accuracy (according to DIN EN 60770-1)
Reference conditions according to DIN EN 61298-1
Ʋ Temperature +18 … +30 °C (+64 … +86 °F)
Ʋ Relative humidity 45 … 75 %
Ʋ Air pressure 860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
Other reference conditions
Ʋ Reflector ideal reflector, e.g. metal plate 2 x 2 m (6.56 x 6.56 ft)
Ʋ False reflections Biggest false signal, 20 dB smaller than the useful signal
Measuring characteristics
Ultrasonic frequency 70 kHz
Interval > 2 s (dependent on the parameter adjustment)
Abstrahlwinkel at -3 dB 11°
Step response or adjustment time
11)
> 3 s (dependent on the parameter adjustment)
Influence of the ambient temperature to the sensor electronics
12)
Average temperature coefficient of the
zero signal (temperature error)
0.06 %/10 K
9)
With inductive load ohmic share min. 25 Ω/mH.
10)
Incl. non-linearity, hysteresis and non-repeatability.
11)
Time to output the correct level (with max. 10 % deviation) after a sudden level change.
12)
Relating to the nominal measuring range.