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Square root output 
 
 
 
 
 
 
 
 
 
 
 
 
 
When a flowmeter of orifice or nozzle is used to measure flow, Square root computation 
is applied to convert differential pressure voltage signals into flow-rate signals. Low Cut 
value range = 0.0~5.0% (value of Ch1 < value of Ch2) 
 
Example) Linear Voltage = 0.0 ~ 10.0, Range=0.0~1000.0,   
1) Lowcut=0.1%(0.01V limit) 
if input value = 1.0,     
         0.1% : 1.0 = X : 1000.0, ∴ X =0.01V 
 
   Y=      * Range  =         *  1000.0 = 31.6 Æ PV input 
 
10
X
10
01.0
10
X
Y =        * Range 
Low Cut point
Output(Y) 
(SR computed input) 
(SR : Square Root)
INPUT(X) 
0.0 ~ 5.0%
Output(Y) is fixed by zero.