Irrigation IOM
Sensors
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3
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6
INSTRUCTIONS FOR DIAMETER REDUCTION
In the case of diameter reduction, please refer to the indications shown in the figure below.
The diameter reduction introduces a pressure drop in the system. Pay attention, especially when the flow rates
are high and if the section reduction is applied simultaneously with the use of reduced section meters.
In the case of low pressures, the section reduction could also lead to cavitation formation, especially if the meter
has a reduced section; this condition must be absolutely avoided.
REFERENCES
1 Vent
2 Recommended maximum vertex angle: 15°
3 Flow rate meter
4 Flow
5 Discharge
Flowmeter type U D
Full Bore 5 3
Reduced Bore 0 0
Insertion 15 10
5
1 2 3
4
Fig. 43 Installation on pipes with diameter reduction
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