B.2 Scaling - AOIP THERMYS 150 Mode D'emploi

THERMYS 150 A O
DVANCED PERATION
B.2 Scaling
The scale correction function performs a conversion between the electrical quantities measured and the physical quantities converted.
This linearisation is used partially to correct errors induced by non linear sensor/converter systems.
The Set to scale function is used to define up to 10 segments of a straight line, or 10 points, in order to approach a non linear response curve as closely as
possible and to perform scale corrections for each segment.
The symbol is displayed on the screen in the active window when Set to scale is active.
The Define... menu is used to program up to 10 lines of 2 values: X and Y= f(X).
In measurement: X = The value measured and Y = The value displayed.
In transmission: X = The Setting displayed and Y = The value transmitted.
The lines entered are sorted according to increasing X to set to scale a value X, the unit searches for the 2 lines n and m=n+1 that enclose it and extrapolates
linearly: Y = Yn + (X-Xn) x (Ym-Yn)/(Xm-Xn)
Use the function keys to edit the points:
To Add a line: enter X and Y, then press the function key.
To select a line from the list, use the Up and Down navigation keys.
To cancel a selected line, use the key.
The Format and Units zones are used to select the number of decimal places and the display units.
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