User Manual

Installation 6-7
Angle of the
Curve in the Pipe
v ≤ 1m/s v > 1m/s
α ≤15° L ≥ min. 3x DN L ≥ min. 5x DN
α ≤45° L ≥ min. 5x DN L ≥ min. 10x DN
α ≤90° L ≥ min. 10x DN L ≥ min. 15-20x DN
DN represents the nominal diameter
Figure 6-4 Sensor position behind curves or elbows
 = Error! Undesirable flow conditions
 = Sufficient distance to obtain steady flow (10 … 50 x diameter, depending on the application)
Figure 6-5 Overflow pipes or fall error caused by unstable flow conditions
 = Error!
Risk of debris build-up / sludge accumulation caused by negative slope
Figure 6-6 Negative slope – risk of silt accumulation