Hi
I am working on a program that converts raw value from a pt-100 sensing element.
The value i get from the element using a Agilent 34970A is 120.788 ohm. vitch is correct.
This has been done in MSexcel before, and the formula we have used is
" =(($C$18-SQRT($C$18^2-4*$C$19*((B26/$C$17)-1)))/(2*$C$19))"
Where C17=Sensing element at 0¤ (99,6943)
C18=0.0039135
C19=0.0000006035
B26=Measured resistance (120.788)
Converting this into a formula in a formula node gives me T=((A - (sqrt(A**2 - 4*B*((InRt/R) -1)))/(2*B)));
A= (C17, 99,965)
B=(C18, -0,0039135)
C=(C19, 0.0000006035)
R=(C17=Sensing element at 0¤) 99,965
InRt=(B26, measured resistance 120,788)
The formula node gives out T=-3187.81301
In excel this value is 56¤ +-
What am I doing wrong?
It appears to me that the formula node does not operate in the same manner as excel.