ABB COPA-XE - 8 Accuracy

40
Electromagnetic Flowmeter
COPA-XE / MAG-XE
8. Accuracy
Reference Conditions per EN 29104
Fluid Temperature
20°C ± 2K
Supply Power
Nominal voltage per Instrument Tag Un ± 1% and
Frequency ± 1%
Straight Pipe Installation Requirements
Upstream > 10 x D
Downstream > 5 x D
D = Flowmeter primary size
Warm Up Phase
30 min
Analog Output Effects
Same as pulse output plus ± 0.1 of rate
Standard Calibration (Pulse Output):
Q > 0.07 Q
max
DN
± 0.5 % of rate
Q < 0.07 Q
max
DN
± 0.00035 Q
max
DN
Q
max
DN
= max. flowrate for the meter size at 10 m/s
Standard Calibration
0.5 % of rate
Fig. 21 Metering System accuracy COPA-XE / MAG-XE