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If  P1-700, P2-700 = 3 (BS 3680 Weir) 
Select from the following options: 
1 = Rectangular         
2 = V-Notch 90 degree  (full 90
o
)                                            
3 = V-Notch 53 degree 8’ (half 90
o
)                           
4 = V-Notch 28 degree 4’ (quarter 90
o
)                                                               
5 = Broadcrested (Rectangular) Weir 
 If  P1-700, P2-700 = 5 (Special) 
Select from the following options: 
1 = Palmer-Bowlus Flume           
2 = H-Flume          
3 = V-Notch angle (other than BS3680) 
If  P1-700, P2-700 = 6 (Universal) 
Where  the  Primary  Measuring  device  does  not  match  any  of  the  devices 
contained in the above categories then a universal volume calculation can be 
performed. A head Vs flow chart is used, to enter a number of Breakpoints 
for  head  and  flowrate  (P1-730  to  793,  P2-730  to  793),  which  is  either 
provided  by  the  manufacturer  or  created  based  on  the  dimensions  of  the 
device. 
Select from the following options: 
1 = Universal Linear flow calculation          
2 = Universal Curved flow calculation              
P1-702, P2-702 Calculation 
Select the required calculation method, both will give the same answer, but 
the difference is the information required to complete the calculation. For 
ratiometric  it  is  normally  sufficient  to  know  the  maximum  flow  at  the 
maximum head. Choose between: 
1 = Absolute           
2 = Ratiometric (Default)