EF200F-C
Commissioning
95
Effect on accuracy of reduced, straight inlet run
A0034240
A0034242
A0034243
A0034244
E = error as %
A/B = inlet run/diameter of measuring tube
Diameter mismatch correction
The measuring device is calibrated according to the ordered process connection. This
calibration takes account of the edge at the transition from the mating pipe to the
process connection. If the mating pipe used deviates from the ordered process
connection, a diameter mismatch correction can compensate for the effects. The
difference between the internal diameter of the ordered process connection and the
internal diameter of the mating pipe used must be taken into consideration.
The measuring device can correct shifts in the calibration factor which are caused, for
example, by a diameter mismatch between the device flange (e.g. ASME B16.5/Sch. 80,
DN 50 (2")) and the mating pipe (e.g. ASME B16.5/Sch. 40, DN 50 (2")). Only apply
diameter mismatch correction within the following limit values (listed below) for which
test measurements have also been performed.
E [%]
0
0.5
1.0
1.5
2.0
2.5
5
10
15
20
25 30
35 40
45
50
-0.5
-1.0
0
A/B
E [%]
1.0
1.5
2.0
2.5
5
10
15
20
25 30
35 40
45
50
-0.5
-1.0
0
E [%]
0
0.5
1.0
1.5
2.0
2.5
5
10
15
20
25 30
35 40
45
50
-0.5
-1.0
0
E [%]
0
0.5
1.0
1.5
2.0
2.5
5
10
15
20
25 30
35 40
45
50
-0.5
-1.0
0
