PN 903-8797, Rev A
d. Use the following formulas to calculate a new ExLo and ExHi to com-
pensate for the dierences between the input value and the displayed
value:
A = Range Lo (ExLo range [low output from the external water dewpoint/
water content source])
B = Range Hi (ExHi range [high output from the external water dewpoint/
water content source])
C = Reading Lo (external water dewpoint/water content reading on the
User Interface)
D = Reading Hi (external water dewpoint/water content reading on the
User Interface)
E = New ExLo (newly calculated ExLo reading, from Equation 1).
New ExLo =
CD
ABxAC
A
−
−−
−
)(
)()(
Equation 1
New ExHi =
CD
ABxAB
E
−
−−
+
)(
)()(
Equation 2
e. If the new ExLo and new ExHi values are dierent, enter these values in
to the analyzer.
5. Repeat Steps 4-b and 4-c to ensure the readings on the User Interface
match the input signal.
Appendix A | A-5
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