Lumel P30U series - Page 48

49
49
Fig.13. Input individual characteristic
Measured value
Input function
Linearized function
 During function approximation, one must remember that
inthecaseofapproximatingcurvesthatsignificantlydeviatefromlinear
characteristics, the higher number of linearising sections, the lower
thelinearisationerror.
 If the measured values are lower than X1, then the calcu-
lations will be made based on the first straight line calculated based
on points (X1,Y1) and (X2,Y2). However, for values higher than Xn
(wheren–thelastdeclaredmeasuredvalue),thedisplayedvaluewill
becalculatedbasedonthelinearfunctiondeterminedlast.
Note:Alltheenteredpointsofthemeasuredvalue(Yn)mustbearran-
gedinascendingorder,sothatthefollowingdependenceistrue:
   X1X2X3…Xn
 Ifthedependencespecifiedaboveisnottrue,theindividual
characteristic functions will be automatically switched off (will not
be performed) and a diagnostic flag will be set in the status register.
Individual characteristics are switched off by default. Parameters
ofindividualcharacteristicscanbeconfiguredviakeyboardasseparate
groupsofsub-menu:Ind.Char.