F
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4300 CLAMP
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ON ULTRASONIC FLOW METER
ONICON Incorporated 727.447.6140 Page 14 onicon.com
3.2.2 The Transducers
For best results, the transducers should be installed on a straight run of pipe free of bends, tees, valves, transitions,
insertion probes and obstructions of any kind. For most installations, ten straight unobstructed pipe diameters upstream
Additional considerations are outlined below.
• Avoid installing the transducers downstream from a throttling valve, a mixing tank, the discharge of a positive
displacement pump, or any other equipment that could possibly aerate the liquid. The best location will be as free as
• Avoid mounting the transducers on a section of pipe with any external scale. Remove all scale, rust, loose paint, etc.,
from the location prior to mounting the transducers.
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•
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• Never mount transducers under water.
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a full pipe.
IMPORTANT NOTE
In some cases, longer straight runs may be necessary where the transducers are placed downstream from devices
which cause unusual ow prole disruptions or swirl (for example, modulating valves, two elbows in close
proximity and out of plane, etc.)
Flow
5 Dia.10 Dia.
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