Siemens SITRANS F US SONOKIT, Руководство по эксплуатации, Страница: 39 / 95

Commissioning
6.4 Commissioning via PDM
SITRANS FUS080 transmitter
Operating Instructions, 07/2012, A5E03059912-02
37
Set sensor-related parameters
1. Select "Device"→"Pipe geometric assistant" in order to calculate:
– Rn for path 1 and 2 (pipe constant in line 304 and 305)
– Calibration Factor (Flow-Profile-Factor for retrofit, line 310)
– Diameter (line 306)
2. Define sensor-specific parameters based on data from the sensor measurement report
and the selection made at ordering:
– Select metric (m, m/s) or imperial (in, ft/s) units for data entry. Internal calculation in
the device is made in metric units only.
– Enter outer pipe diameter (D
u
) and average pipe wall thickness (t).
– Flow velocity (V) is automatically calculated using entered pipe data and given Q
max
(PDM parameter row 10).
– Enter media viscosity in cSt (e.g. 1 cSt for water at 20 °C).
– Enter the pipe roughness value.
The pipe-roughness default value is automatically set according to pipe material or
can be entered manually by selecting "User defined" (range: 0.0000 to 0.0100 m).
Pipe material Typical roughness
Smooth plastic pipe (select PVC) 0.0001 m
Polished stainless steel pipe 0.0001 m
Standard carbon steel pipe (select STEEL) 0.0004 m
Rusty carbon steel pipe 0.001 ... 0.002 m
Concrete pipe (Select CONCRETE) 0.002 ... 0.005 m