Endress+Hauser Proline Prowirl R 200 - Page 188

Technical data Proline Prowirl R 200 HART
188 Endress+Hauser
Water mass flow
Sensor version Mass (integrated temperature measurement)
Process pressure
[bar abs.]
Flow velocity
[m/s (ft/s)]
Reynolds number
Window
Measured value deviation PremiumCal
1)
Standard
All pressures All velocities Re
2
to Re
max
A1 < 0.75 % < 0.85 %
Re
1
to Re
2
A2 < 2.6 % < 2.7 %
1) Order code for "Calibration flow", option N "0.65% volume PremiumCal 5-point, extended turndown"
Mass flow (user-specific liquids)
To specify the system accuracy, Endress+Hauser requires information about the type of
liquid and its operating temperature or information in table form about the dependency
between the liquid density and the temperature.
Example
• Acetone is to be measured at fluid temperatures from +70 to +90 °C (+158 to +194 °F).
• For this purpose, the Reference temperature parameter (7703) (here 80 °C (176 °F)),
Reference density parameter (7700) (here 720.00 kg/m
3
) and Linear expansion
coefficient parameter (7621) (here 18.0298 × 10
-4
1/°C) must be entered in the
transmitter.
• The overall system uncertainty, which is less than 0.9 % for the example above, is
comprised of the following measurement uncertainties: uncertainty of volume flow
measurement, uncertainty of temperature measurement, uncertainty of the density-
temperature correlation used (including the resulting uncertainty of density).
Mass flow (other media)
Depends on the selected fluid and the pressure value, which is specified in the parameters.
Individual error analysis must be performed.
Accuracy of outputs
The outputs have the following base accuracy specifications.
Current output
Accuracy ±10 µA
Pulse/frequency output
o.r. = of reading
Accuracy Max. ±100 ppm o.r.
Repeatability o.r. = of reading
100 D·
i
³
V
½
r =
A0034417
 30 [% o.r.]