Endress+Hauser Proline Prosonic Flow I 400 Operating Instructions Manual page 158

Technical data
Nominal diameter Maximum permissible
errors for device
≥ DN 200 (8") ±0.5% o.r. ±
3 mm/s (0.12 in/s)
1) Adjustment in relation to a reference value with correction values written back to the transmitter
158
Measurement error at the measuring point
The measurement error at the measuring point is made up of the measurement error of
the device (0.5% o.r.) and the measurement error resulting from the installation
conditions on site. With a flow velocity > 0.3 m/s (1 ft/s) and a Reynolds number >
10 000, the following are typical error limits:
+ Installation-specific
maximum permissible
errors (typical)
+ ±1.5% o.r.
Measurement report
If required, the device can be supplied with a factory measurement report. A measurement
is performed under reference conditions to verify the performance of the device. Here, the
sensors are mounted on a pipe with a nominal diameter of DN 250 (10") or 400 (16").
With a flow velocity of > 0.3 m/s (1 ft/s) and a Reynolds number > 10 000, the following
error limits are guaranteed with the measurement report:
Nominal diameter
250 (10"); single-path
400 (16"); dual-path
The specification applies to Reynolds numbers Re ≥ 10 000. Larger measurement
errors may occur for Reynolds numbers Re < 10 000.
Proline Prosonic Flow I 400 Modbus RS485
→ Maximum permissible
errors at the
measuring point
(typical)
→ ±2% o.r. ±
3 mm/s (0.12 in/s)
Maximum permissible errors for device
±0.5% o.r. ± 3 mm/s (0.12 in/s)
±0.5% o.r. ± 3 mm/s (0.12 in/s)
1)
Field calibration
±0.5% o.r. ±
3 mm/s (0.12 in/s)
Endress+Hauser