Filter Correction Formula - Emerson OPM4001 Installation And Operation Manual

I N S T R U C T I O N M A N U A L

FILTER CORRECTION FORMULA

If you have an OPLR (correlation factor) other than 0.5 your slides will read differently. To calculate what the slide will read with
another OPLR use the formula:


M


 
Op 1
0 5 .
 
 

1 1

 


100


Where:
OP1 = Standard filter Value in %
M2 = OPLR for your instrument
OP2 = Standard Filter value at your OPLR in %
Example:
Standard filter value is 23.1% what will it read at OPLR of 1.5?


1 5 .


 
23 1 .
0 5 .
 
 
 1 1

 


100


R E V 4 . 2


2




* 100 OP 2










 * 100 54 5 . %





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