‘U’ PARAMETERS FOR P3 PRIMARY ELEMENT
The number of ‘U’ parameters required varies according to the primary element
chosen (P3) and the method of calculation (P4). The OCM-3 prompts the user by
displaying the next required parameter, insuring the programming is complete.
The following is a list of the specific primary elements to which the OCM-3 can
be applied.
Refer to the page covering your particular application; the rest may be disregarded.
P3 primary element
0 exponential device (e.g. proportional, V-notch, Parshall etc)
1 BS-3680 Rectangular Flume (ISO 4359)
2 BS-3680 Round Nose Horizontal Crest Weir (ISO 4374)
3 BS-3680 Trapezoidal Flume (ISO 4359)
4 BS-3680 U-throated Flume (ISO 4359)
5 BS-3680 Finite Crest Weir (ISO 3846)
6 BS-3680 Thin Plate Rectangular Weir (ISO 1438/1)
7 BS-3680 Thin Plate V Notch Weir (ISO 1438/1)
8 Rectangular Weir (contracted)
9 Round Pipe
10 Palmer-Bowlus Flume
11 H Flume
12 Universal Head vs. Flow
13 Rectangular Area
x
Velocity
14 Trapezoidal Area
x
Velocity
15 Modified Trapezoidal Area
x
Velocity
16 U-channel Area
x
Velocity
7ML19985AB01 OCM III 51
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