Performance Characteristics - Endress+Hauser PROline Prosonic Flow 93 FOUNDATION Fieldbus Operating Instructions Manual

PROline Prosonic Flow 93 FOUNDATION Fieldbus
Reference operating
conditions
Maximum measured error
Repeatability
Endress+Hauser
10.1.6

Performance characteristics

• Medium temperature range: +28 °C ± 2 K
• Ambient temperature range: +22 °C ± 2 K
• Warm-up period: 30 minutes
Installation:
• Inlet run >10 x DN
• Outlet run > 5 x DN
• Sensor and transmitter grounded.
For flow velocities of > 0.3 m/s and a Reynolds number of >10000, the system accuracy
is:
• Pipe diameter < DN 200: ± 0.5 % o.r. ± 0.05 % o.f.s.
• Pipe diameter > DN 200: ± 0.5 % o.r. ± 0.02 % o.f.s.
o.r. = of reading
o.f.s. = of maximum full scale value
As standard, the system is dry-calibrated. The dry calibration procedure results in an
additional uncertainty of measurement. This measuring uncertainty is better than 1.5 %
typically. During dry calibration, the characteristics of the pipe and the fluid are used to
calculate the calibration factor.
As verification of the accuracy, an accuracy report is offered as an option.
Accuracy is verified using a stainless steel pipe.
%
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0 2
Fig. 64: Max. measured error (wet calibration) in % of measured value
a = Pipe diameter > DN 200
b = Pipe diameter < DN 200
Max. ± 0.3 % for flow velocities > 0.3 m/s
a
b
4 6 8
m/s
10 Technical data
10 12 14
111