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Reverse lookup table scaling.

Ok so I have a sensor that is polynomial THEN linear. 
 
I have a 25pt lookup table for the calibration in MAX.
 
I have a data file that is the result of scaling the raw voltages into real units after going thru the lookup table.
 
Now I realize the lookup table is incorrect.
 
I need to back the lookup table out of the data to bring me back to volts.
 
Is there a semi easy way to do this in LV?
 
I have the data file and the lookup table attached.
 
MF100 units are correct in LB/Min.
 
The column "Granetelli" is the result of the lookup table.
 
I need to back out the calibration from the data, put the data into volts, and then figure out a new lookup table that makes those unscaled volts scale to the values that are listed in the MF100 column.
 
Advice? 
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Vr6Fidelity,

Can you post a screen shot of your code so we can have a better idea of what you are doing.  I believe what you should try is a simple Analog Input Voltage aquire to get your raw voltage data, but I would like to make sure. 
Mark
NI App Software R&D
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What I was trying to do would have been really complicated. Instead I just repeated the test with that channel set to "no scaling" and I have what I need now. Thank you.
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