Hach AS950 AWRS, Operation Manual

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Table 7 Primary device options
Option Description
Area Velocity Select the method of calculating the area, then go to Table 8 . Options: Circular, Rectangular,
Trapezoidal or U-Shaped.
Flume Select an option, then go to Table 9 . Options: British Rectangle, Cuthroat, H-Type, Leopold-
Lagco, Montana, Palmer-Bowlus, Parshall, RBC, San Dimas or Trapezoidal.
Manning Enter the pipe shape. Options: Circular, Rectangular, Trapezoidal or U-Shaped.
Enter the pipe diameter or the width(s) and height, percent slope and manning roughness
coefficient. Refer to
Manning roughness coefficients on page 30.
Percent slope —1 unit per hundred units = 0.01 slope. For example, 1 m of decline for every
100 m = 0.01 slope
Nozzle Enter the nozzle shape. California Pipe —Enter the nozzle diameter (0.01 to 0.91 m). Kennison
—Enter the nozzle diameter (6, 8, 10, 12, 16. 20, 24, 30 or 36 in.) and half-section or no half-
section.
Weir Select an option, then go to Table 10 . Options: Cipolletti, Compound Notch, Contracted
Rectangular, Non-Contracted Rectangle or Thel-Mar. V-Notch.
Table 8 Area velocity options
Option Description
Circular Enter the pipe diameter. For the US900x, in addition enter the source of the velocity measurement.
For example, when an ultrasonic sensor is connected to Sensor 1 port and a submerged area
velocity sensor is connected to Sensor 2 port, select Sensor 2 port.
Rectangular Enter the width and the height of the channel. For the US900x, in addition enter the source of the
velocity measurement.
Trapezoidal Enter the width of the top and bottom of the channel and the height of the channel. For the
US900x, in addition enter the source of the velocity measurement.
U-shaped Enter the channel width. Options: 10 to 2540 cm (4 to 999.99 in.). For the US900x, in addition enter
the channel height and the source of the velocity measurement.
Table 9 Flume options
Option Description
British Rectangle Enter the flume throat length, width and flume throat width.
Cutthroat Enter the flume width and length.
H-Large Enter the flume size. Options: 3.0 or 4.0 ft.
H-Medium Enter the flume size. Options: 0.50, 0.75, 1.00, 1.50, 2.00, 2.50, 3.00 or 4.50 ft.
H-Small Enter the flume size. Options: 0.4, 0.6, 0.8 or 1.0 ft.
Leopold-Lagco Enter the flume size. Options: 4, 6, 8, 10, 12, 15, 18, 20, 21, 24, 27, 30, 36, 42, 48, 54 or
60 inches.
Montana Enter the flume throat width. Options: 1, 2, 3, 6, 9, 12, 18, 24, 30, 36, 48, 60, 72, 84, 96, 108,
120, 144, 180, 240, 300, 360, 480 or 600 inches.
Palmer-Bowlus Enter the flume throat size. Options: 4, 6, 8, 10, 12, 15, 18, 21, 24, 27, 30, 36, 42, 48, 60 or
72 inches.
Parshall Enter the flume size. Options: 1, 2, 3, 6, 9, 12, 18, 24, 30, 36, 48, 60, 72, 84, 96, 108, 120,
144, 180, 240, 300, 360, 480 or 600 inches.
RBC Enter the flume size. Options: 50, 75, 100, 150 or 200 mm.
English 9