Lumel N31U - Mathematical Functions; Individual Characteristic

24
N31U User manual
5.4.1.3 Mathematical functions
The N31U meters have a functionality that enables the conversion of the mea-
suring value by the selected mathematical function (MAtH setting):
• Sqr – measured value is squared.
• Sqrt – square root of the measured value.
• Inv – reciprocal of the measured value.
• InvSq – reciprocal of the measured value is squared.
• InvSt – square root of reciprocal of the measured value.
The mathematical functions can be disabled by the setting the parameter
MatH to OFF.
5.4.1.4 Individual characteristic
The value measured by the N31U meter can be converted by the individual
characteristic. It is important when using the mathematical functions to pay
attention to the order of operations - the mathematical functions are comple-
ted before the individual characteristic, which should be taken into account
when specifying the points coordinates x values. The user can dene up to
31 linearization functions by dening 32 points of the characteristic. The in-
dividual characteristic parameters are available from the menu level and via
the interface. Programming client-specic characteristic requires to dene the
number of points and then determining their values. Dening points of the in-
dividual characteristic requires to determine the points of the characteristic by
providing the X and Y values of each point. The X value of the point is the me-
asuring value converted by the mathematical functions (if they are enabled),
while Y value species the desired value for the measurement with X value.
During a programming, however, the subsequent entered points should meet
the dependence:
X1 < X2 < X3 < … Xn,
where Xn - the last point of the characteristic.
Fig. 10: The message after resetting the maximum value.