Tokyo Keiki KRG-10, Руководство пользователя

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2-6
2.7 Tips for stable measurement
Level gauge should be installed away from any obstacle
inside tank which may cause of disturbance as basic. In case
some of them are unavoidable, following tips may be solution
for stable measurement.
NOTE: “
E
” means plane of polarization of the microwave.
2.7.1 Against pipe structure or ladder
Microwave reflections from elongated metal objects such as thin pipes or ladders rungs are largest
when the axis of such objects are in parallel with the electric field. The orientation of the electric field
generated by transmitter is as shown in the Fig.2.7.1.1
In case mounting the transmitter as this electric field is not in parallel with the axis of the obstacle, it
will reduce or emit affection of the false echo.
（
In certain circumstances, such as size, shape, and position of the pipe, there is also that there is no
effect
）
Pipe
Correct Wrong
Pipe
Pipe
View A-A
A
A
Pipe
A
A
View A-A
Fig. 2.7.1.1 Installation method when the pipe is present in the space
Fig. 2.7.1 Oscillation direction
E