27
Basic Programming Setup
3-C.
Press
CHANGE CHOICE
to cycle through each of the level unit choices. Press
ACCEPT
to continue to primary device setup.
Step 4 - Primary Device
Note:
Selecting the appropriate primary device is critical for proper flow rate calculations.
4-A.
Next, the flow meter will display the Primary Device screen.
4-B.
Select the desired primary device, enter the calculation method, shape, and pipe
diameter for that primary device.
4-C.
Press
CHANGE CHOICE
to cycle through the primary device choices (see
,
, and
). Show the size and details required for each. Press
ACCEPT
to continue to Program Lock.
11:00 AM 21 - APR - 01
PRIMARY DEVICE
ACCEPT
CHANGE
CHOICE
PRIMARY DEVICE:
WEIR
SELECT PRIMARY DEVICE
Table 6 Primary Device Choices
Primary Device
Description
None—Level Only No primary device installed. Level measurement only.
Weir
Compound, Cipolletti, Contracted rectangular, Non-contracted rectangular, Thel-Mar, V-Notch
(22.5-120°), Compound V-Notch (See
)
Flume
Parshall, Trapezoidal, H-type, HL-type, HS-type, Leopold-Lagco, Palmer Bowlus (See
)
Nozzle
California pipe
Power Equation
Enter variables K
1
, K
2
, n
1
and n
2
K
1
(0–9999.99), K
2
(+/- 0–9999.99), n
1
and n
2
(1–9.99)
Head vs. Flow
Two independent user–entered look up tables of up to 99 points each
Enter up to two tables of up to 100 user-defined head vs. flow points.
Head: 0–99.99 in feet or centimeters Flow: 0–99999.99 in any desired units
Manning Equation
Rectangular channel, U-shaped channel, or Circular pipe
Enter pipe diameter, slope & roughness coefficient. Pipe dia.: 4–240 in. or 101–6096 cm
Percent Slope: 0.001–1.00 [1 unit per hundred units = 0.01 slope] Example: 1 m of decline every 100 m =
0.01 slope.
Manning Roughness
Area Velocity
Circular Pipe: Enter pipe dia., 4–240 in.(10–610 cm)
Rectangular Channel: Enter width, 4–999.99 in. (10– 2540 cm)
Trapezoidal Channel: Enter width of channel bottom, width of channel top and channel depth, range for
all: 4–999.99 in. (10– 2540 cm)
U-Shaped Channel: Enter channel width, 4–999.99 in. (10–2540 cm)
Table 7 Weir Choices
Weir
Description
Cipolletti
Crest width is in. or cm (1–960 in. or 2.54–2438 cm)
Contracted Rectangular
Crest width is in. or cm (1–960 in. or 2.54–2438 cm)
Q
K1H
n1
K2H
n2
+
=
Содержание Sigma 950
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Страница 6: ...4...
Страница 20: ...18 Introduction...
Страница 34: ...32 Basic Programming Setup...
Страница 50: ...48 Sensor Installation...
Страница 82: ...80 Maintenance...
Страница 83: ...81 Appendix A Program Flow Charts Figure 22 Overview of Basic Program Menus...
Страница 84: ...82 Program Flow Charts Figure 23 Setup Flow Chart...
Страница 85: ...83 Program Flow Charts Figure 24 Options Flow Chart...
Страница 86: ...84 Program Flow Charts Figure 25 Alarms Menus Flow Chart...
Страница 87: ...85 Program Flow Charts Figure 26 Calibration Menus Flow Chart Page 1...
Страница 88: ...86 Program Flow Charts...
Страница 102: ...100 Programming Features...
Страница 106: ...104 Primary Devices Head Measurement Locations...
Страница 126: ...124 SCADA Modbus System Guidelines...