West Control Solutions TB 45 Temperature Monitor - Manual (Page 22)

6.2 Linearization
The input values of input INP1 or INP2 can be linearized via a table (dependent from adjusted sensor type S.tYP).
By means of tables, e.g. special linearizations for thermocouples or other non-linear input signals, e.g. a container fill-
ing curve, are possible.
The “ Lin” table is always accessed, when at INP1 or INP2 with sensortype S.TYP= 18: “special thermocouple”
or with linearization S.Lin= 1: “special linearization” is selected .
• The input signals must be specified in mV, V, mA, % or Ohm dependent on input type.
• For special thermocouples (S.tYP = 18), specify the input values in V, and the output values in the temperature
unit adjusted in U.LinT .
• For special resistance thermometer (KTY 11-6) (S.tYP = 23), specify the input values in Ohm, and the output
values in the temperature unit adjusted in U.LinT.
Non-linear signals can be linearized using up to 16 segment points. Each segment point comprises an input ( In.1 …
In.16) and an output (Ou.1 … Ou.16). These segment points are interconnected automatically by straight lines.
The straight line between the first two segment points is extended downwards and the straight line between the two
highest segment points is extended upwards, i.e. a defined output value for each input value is provided.
With an In.x value switched to OFF,all further segments are switched off.
+
Condition for the input values is an ascending order.
In.1 < In.2 < ...< In.16.
g
For linearization of special thermocouples, the ambient temperature range should be defined exactly,
becauseit is used to derive the internal temperature compensation.
See also page 39.
g
The same linearization table is used for input 1 and input 2.
6.3 Input scaling
Scaling of input values is possible. After any linearization, measurement value correction is according to the offset or
two-point method.
Functions
22 Linearization TB 45
Ou.16
Ou.1
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In.1 In.16