KROHNE IFC 300 Converter EN - Manual (Page 161)

TECHNICAL DATA
8
161
IFC 300
www.krohne.com 08/2010 - 4000069803 - MA IFC 300 R04 en
8.6 Measuring accuracy (only TIDALFLUX)
The measuring accuracy for partly filled pipes and completely filled pipes are different. In these
graphs it is assumed that the velocity at full scale value is at least 1 m/s (is also the standard
value for calibration, since it will result in the most accurate measurements).
Maximum measuring error Related to volume flow (mv = measured value,
FS = Full Scale)
These values are related to the pulse / frequency output
The additional typical measuring deviation for the current output is
±
10 μA
Partly filled: Partly filled: Partly filled: Partly filled:
v ≥ 1 m/s / 3.3 ft/s at Full Scale: ≤ 1% of FS
Fully filled: Fully filled: Fully filled: Fully filled:
v ≥ 1 m/s / 3.3 ft/s: ≤ 1% of mv
v < 1 m/s / 3.3 ft/s: ≤ 0.5% of mv + 5 mm/s / 0.2 inch/s
Minimum level: 10% of inner diameter
Fully filled pipes
Figure 8-1: Maximum measuring error of measured value.