Tokyo Keiki UFL-30, Руководство по установке и эксплуатации

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I-10
I-2-2 Selection of Transducer Setup Position
WARNING
Do not install the transducers in a atmosphere where any flammable or explosive gas is present.
(1) Setup position
As a rule, compliance with the conditions given below when positioning the transducers assures top
performance of the flowmeter and keeps measurement aberrations due to flow quantity fluctuation
at an absolute minimum.
a. Install transducers in a position that is filled with fluid, even after flow has stopped.
b. In general, refer to the information in
III-4-2 Pipe conditions and required straight pipe length
regarding minimum required straight pipe lengths for the upstream and downstream side when
selecting a position.
b. Select a position with minimum flow-obstruction. Contact the manufacturer if circumstances require
positioning of a pump, valves, pipes with gradual width increment, merger pipe, etc. either at the
upstream or downstream side.
d. Consider the possibility of sedimentation at the bottom of the pipe and the presence of an air pocket
at the top of the pipe (Fig. 1-2-2-1). Recommended place for transducers is at angle between 45°
from the level. In addition, avoid flanges and welding areas and select a smooth portion of the pipe
to install the transducers.
45°
45°
Transducer
Air pockets
Sediments
Level
Fig. 1-2-2-1; Transducer Positioning
Transducers Welding
areas
Flange or welding area
Fig. 1-2-2-2; Unsuitable Transducer Positions