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F-3100 Flow Meter Manual 06/14 - 0670-7 Page 14

3.1.4 Minimum Straight Run Requirements

The straight run requirements presented below represent the minimum requirements

for accurate ow measurement. For optimum performance, provide as much additional

straight run as possible.

IMPORTANT NOTE

For proper operation, install the ow meter in a straight run of pipe free of bends, tees, valves,

transitions and obstructions for a distance of at least 3 diameters upstream and 2 diameters

downstream.

Recommended Installation

3 DIA

2 DIA

3 DIA

2 DIA

3 DIA

2 DIA

Place ow meter at least 3

pipe diameters upstream

and 2 pipe diameters

downstream from bends

and obstrutions.

Avoid downward ow

which can lead to partially

lled pipes.

The electrodes should

be located in the

horizontal axis (3 o’clock

and 9 o’clock) in order to

prevent sediment from

settling on them.

Avoid these installations

Electrode location



Electrode location



Electrode Location

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Onicon F-3100 Series Manuale Utente Pagina 14