JUMO miroTRON Operating Manual page 43

Parameter
X4
"Display graphic" button (displaying linearization on a graphic):
Use this button to create a graphic of the linearization.
The graphic includes the characteristic lines for both types of linearization where applicable, namely the
formula and the grid points (table).
The display range for the graphic is initially determined by the "measuring range start" and "measuring
range end" values (y values); it can be temporarily changed in the display by entering different x values.
Grid points
Linearization is specified by entering up to 40 grid points (pairs of values X,Y). The value X stands for
the physically measured value (resistance in Ω or voltage in mV) for a RTD temperature probe or ther-
mocouple. With the other signal types, the input variable is scaled to 0 to 100% (for voltage/current signal
of measuring range, for resistance/potentiometer of resistance Rx, for resistance transmitter of overall
resistance). The value Y is the linearized value (e.g., temperature in °C).
Parameter
Measured value (X)
Linearized value (Y)
button (calculating the polynomial using the grid points):
After entering the value pairs, use this button to calculate a polynomial that describes the progression of
the linearization characteristic line.
The calculated coefficients are incorporated into the formula. The characteristic lines for both types of
linearization then correspond to each other.
If the x values do not increase in a straight line, the linearization is not applied. In this case, it is impos-
sible to display the graphic or calculate the polynomial.
"Display graphic" button (displaying linearization on a graphic):
Use this button to create a graphic of the linearization.
The graphic includes the characteristic lines for both types of linearization where applicable, namely the
grid points (table) and the formula.
The display range for the graphic is initially determined by the smallest and largest grid points; it can be
temporarily changed in the display by entering different x values.
Selection/text/value
-1999 to 9999 (0)
Selection/text/value
-1999 to 9999 (0)
-1999 to 9999 (0)
7 Configuration
Description
Coefficient of the quartic component (x
Description
Value of the relevant grid point on the x axis
Value of the relevant grid point on the y axis
4
)
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