Installation
EF200F-C
22
• 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 → See 6.1.1
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. → See 10.5.3
• 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.
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Combination pipe (double elbow 3D (elbows 2 × 90˚ elbows, not on one plane) + reducer, etc.)
Minimum inlet and outlet runs with various flow obstructions
1
Difference in expansion
2
Reduction by one nominal diameter size
3
Single elbow (90˚ elbow)
4
Double elbow (2 × 90˚ elbows, on one plane)
5
Double elbow 3D (2 × 90˚ elbows, opposite, not on one plane)
6
T-piece
7
Expansion
8
Control valve
9
Two measuring devices in a row where DN 侑 25 (1"): directly flange on flange
10
Two measuring devices in a row where DN 侒 40 (1½"): for spacing, see graphic
1
× N
D
5
1
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"):
侑
DN
40 (1½"):
侒
10
A0019189
×
DN
5 × DN
50
5 × DN
25 × DN
h: Inner diameter difference
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