Mounting; Recommended Steadying Lengths According To Din En Iso 5167-1 - ABB Sensyflow FMT200-D Operating Instruction

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Mounting

3.1

Recommended steadying lengths according to DIN EN ISO 5167-1

Change from one to two columns
To achieve the stated measuring accuracy, the steadying lengths
seen above must be provided. For combinations of inlet run dist-
urbances, e. g. valve and reducer, you must always consider the
longer inlet run length. In confined spaces at the mounting location
the outlet run length can be shortened to 3 x D. The reduction of the
minimum inlet run length, however, will impact on the achievable
accuracy.
Change from one to two columns
42/14-37-EN
× ×
X D 15 D
< 7°
< 7°
Sensyflow FMT200-D
×
5 D
G01023
G01024
G01025
G01026
G01027
G01028
G01029
High repeatability of the measuring value is still provided. Under
certain circumstances, special calibration can be performed for insuf-
ficient steadying lengths. For this purpose and in individual cases
consulting is necessary.
For gases with extremely low density (hydrogen, helium) the stead-
ying lengths must be doubled.
Mounting
Expansion
X = 0
Reduction
X = 0
90° manifold
X = 5
Two 90° manifolds at the
same level
X = 10
Two 90° manifolds at two
levels
X = 25
Valve / gate
X = 35
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