Onicon F-1100 Series Bedienungsanleitung PDF herunterladen (Seite 10)

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Turbine Flow Meter Manual 05/14 - 0721-3 / 13518 Page 10

FLOW DIRECTION

STRAIGHT RUN REQUIREMENTS FOR INSERTION TURBINE FLOW METERS

Series F-1100 Single Turbine Flow Meters

GENERAL PRACTICES

1. For best results, install the ow meter in a straight run of pipe,

free of bends, tees, valves, transitions, and obstructions for a

distance of at least 20 pipe diameters upstream and 5 diameters

downstream.

2. Longer straight runs may be required in applications where the

meter is placed downstream from devices which cause unusual

ow prole disruption or swirl, for example, modulating valves or

two elbows in close proximity and out of plane, etc.

3. If there is not sufcient straight run, allow 80% of the run upstream and

20% of the run downstream. If the total length of straight run is less

than 20 diameters, performance may seriously

degrade, and consideration should be given to

changing to the series F-1200 Dual Turbine

Flow Meter.

FLOW DIRECTION

Minimum upstream

straight run distance

20 pipe diameters from any

valve, elbow, tting, etc.

Minimum downstream

straight run distance

5 pipe diameters to any

valve, elbow, tting, etc.

Series F-1200 Dual Turbine Flow Meters

FLOW DIRECTION

GENERAL PRACTICES

1. For best results, install the ow meter in a straight run of pipe,

free of bends, tees, valves, transitions, and obstructions for a

distance of 10 pipe diameters upstream and 5 diameters

downstream.

2. Longer straight runs may be required in applications where the

meter is placed downstream from devices which cause unusual

ow prole disruption or swirl, for example, modulating valves or

two elbows in close proximity and out of plane, etc.

3. If there is not sufcient straight run, allow 80% of the run upstream and

20% of the run downstream. If the total length of straight run is less

than 70% of recommended distance, performance

may degrade and consideration should be given to

changing to the F-3000 Series Inline

Electromagnetic ow meter.

FLOW DIRECTION

Minimum upstream

straight run distance

10 pipe diameters from any

valve, elbow, tting, etc.

Minimum downstream

straight run distance

5 pipe diameters to any

valve, elbow, tting, etc.

3.2 INSERTION METER STRAIGHT RUN REQUIREMENTS

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 52 53

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