Endress+Hauser Proline Prosonic Flow P 500 - Repeatability; Influence of Ambient Temperature

Proline Prosonic Flow P 500
Endress+Hauser 37
mounted on a pipe with a nominal diameter of DN 15 (½"), 25 (1"), 40 (1½"), 50 (2") or 100 (4"),
respectively.
The measurement report guarantees the following error limits at a flow velocity of > 0.3 m/s (1 ft/s)
and a Reynolds number > 10 000:
Nominal diameter Device error limits
DN 15 (½"), 25 (1"), 40 (1½"), 50 (2") ±0.5% o.r. ± 5 mm/s (0.20 in/s)
100 (4") ±0.5% o.r. ± 7.5 mm/s (0.30 in/s)
The specification applies for Reynolds numbers Re ≥ 10 000. Larger measured errors can occur
for Reynolds numbers Re < 10 000.
Example for max. measured error (volume flow)
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
[%]
2 4 6 8 10 12 14
2
1
[m/s]
[ft/s]
0
0.20.1 0.3 0.4 0.5 0.6
A0041973
 24 Example for max. measured error (volume flow) in % o.r.
1 Pipe diameter < DN 100 (4")
2 Pipe diameter = DN 100 (4")
Repeatability
o.r. = of reading
±0.3% for flow velocities >0.3 m/s (1 ft/s)
Influence of ambient
temperature
Current output
Temperature coefficient Max. 1 μA/°C
Pulse/frequency output
Temperature coefficient No additional effect. Included in accuracy.