Mounting; Recommended Steadying Lengths According To Din En Iso 5167 - ABB Sensyflow FMT500-IG Manual De Instrucciones

4

Mounting

4.1

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
CI/FMT500-IG-X1
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.
Sensyflow FMT500-IG
Mounting
Expansion
X = 15
Reducer
X = 15
90° elbow
X = 20
Two 90° elbow
in one level
X = 25
Two 90°elbow
in two levels
X = 40
Valve / slide
X = 50
EN - 15
69