VorTek U44 Series, Instruction Manual

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Series U44 Instruction Manual
M-000-00090
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1. Cable 2. Connector 3. Lock-nut 4. Ball valve 5. Mounting Base 6. Transducer probe
2.4.1 Measurement Site Selection
When selecting a measurement site, it is important to select an area where the fluid flow profile is fully
developed to guarantee a highly accurate measurement. Use the following guidelines to select a proper
installation site:
⚫
Choose a section of pipe that is always full of liquid, such as a vertical pipe with flow in the upward
direction or a full horizontal pipe.
⚫
Ensure enough straight pipe length at least equal to the figure shown below for the upstream and
downstream transducers installation.
Conditions Upstream Straight Run Downstream Straight Run
General Conditions 10D 5D
Elbow 10D 5D
Partially Open Valve 30D 10D
Reduced Pipe 10D 5D
Expanded Pipe 30D 5D
⚫
On the horizontal pipe, the transducer should be mounted on the 9 o’clock and 3 o’clock positions of the
pipe, avoiding the positions of 6 o’clock and 12 o’clock, in case of signal attenuation caused by the pipe,
sediment at the bottom, or bubble cavitation on the pipe.
⚫
Ensure that the measuring site temperature is under the transducer temperature limits.
⚫
Consider the inside condition of the pipe carefully. If possible, select a section of pipe where the inside is
free of excessive corrosion or scaling.