Endress+Hauser Proline Prowirl F 200, Operating Instructions Manual

Page: 21 / 224

Proline Prowirl F 200 PROFIBUS PA Installation
Hauser 21
Inlet and outlet runs
To attain the specified level of accuracy of the measuring device, the inlet and outlet runs
mentioned below must be maintained at the very minimum.
1
15 DN × 5 × DN
3
25 × DN 5 × DN 40 × DN
5 × DN 4
2
20 × DN 5 × DN
5
20 × DN 5 × DN
6
17 × DN + 8 × h 5 × DN
h
7
50 × DN 5 × DN
9
40 × DN 5 × DN
8
5 × DN
DN 25 (1"):
≤
DN 40 (1½"):
≥
A0019189
 6 Minimum inlet and outlet runs with various flow obstructions
h Difference in expansion
1 Reduction by one nominal diameter size
2 Single elbow (90° elbow)
3 Double elbow (2 × 90° elbows, opposite)
4 Double elbow 3D (2 × 90° elbows, opposite, not on one plane)
5 T-piece
6 Expansion
7 Control valve
8 Two measuring devices in a row where DN ≤ 25 (1"): directly flange on flange
9 Two measuring devices in a row where DN ≥ 40 (1½"): for spacing, see graphic
• If there are several flow disturbances present, the longest specified inlet run must
be maintained.
• If the required inlet runs cannot be observed, it is possible to install a specially
designed flow conditioner →  22.
The inlet run correction function:
• Makes it possible to shorten the inlet run to a minimum length of 10 × DN in the
event of flow obstructions 1 to 4. An additional measuring uncertainty of ±0.5% o.r.
occurs here. →  100
• Cannot be combined with the wet steam detection/measurement application
package. If wet steam detection/measurement is used, the corresponding inlet runs
must be taken into consideration. It is not possible to use a flow conditioner for wet
steam.