9
VIII. Instrument usage
8.1 Velocity measuring
This instrument is advanced measuring instruments uses for conductive liquid, simple
operation and convenient maintenance. Please connect the sensor and display exactly
and turn on the power on the display. Then put the velocity sensor into the measuring
channel point.
8.2 Flow measuring
The flow measuring needs to input channel measuring parameters: velocity measuring
margin, velocity measuring height, side slope ratio, channel bottom width, water
depth(water level adjustment,
Ⅲ
-Model water level can be automatically collected by
depth sensor).
Note: The measuring method includes one-point method and multi-point method. The
one-point method choose 0.6 times water depth and 0.5 times channel width. The
multi-point method choose as following:
8.2.1 Velocity distribution line within velocity of vertical distribution and vertical direction of
the water depth(Table 1):
Table 1
Water width(m)
Vertical number
>0 and
＜
0.5
3-4
>0.5 and
＜
1
4-5
>1 and
＜
3
5-8
>3 and
＜
5
8-10
>5 and
＜
10
10-20
>10
＞
20
