VorTek U44 Series, Инструкция по эксплуатации

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Series U44 Instruction Manual
M-000-00090
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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
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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.
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Ensure that the measuring site temperature is under the transducer temperature limits.
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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.
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Choose a section of sound conducting pipe.
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Avoid installation on pipes with mechanical vibrations. If impossible, take shock absorption measures.
2.3.2 Transducer Spacing
The spacing between the ENDS of the two transducers is considered as the standard transducer spacing. After
entering the required parameters, check the data displayed in the Calibration Menu and adjust the transducer spacing
according to the data displayed in the Calibration Menu.
2.3.3 Transducer Mounting Method
There are three mounting method that can be used depending on the measuring environment: V method (reflect
method), W method, and Z method (direct method).
V method is easy to install and is fit for most ultrasonic environments, but Z method has a stronger signal and works
better in a complicated measuring environment. W method can have a stronger signal than V method for smaller
pipe diameters.