Omron E5ZN Operation Manual page 58

Shifting Input Values
Example of 2-point
Temperature Input Shift
4. Although the input shift was performed at two points, close to room tem-
perature (ambient temperature) and near to the set point, select points
close to each end of the sensor range to improve accuracy across the full
range of sensor measurement.
In this example, we use the ES1A K 160 to 260 ° C specification, where the
input temperature setting range is 0 to 260 ° C.
In equations 1 and 2, the set temperature lower limit YL is 0 ° C and the set
temperature upper limit YH is 260 ° C. Check the temperature of the control tar-
get.
We will assume that when the room temperature X1 is 25 ° C, the readout on
the Controller Y1 is 40 ° C, and when the temperature near the set point X2 is
110 ° C, the readout on the Controller Y2 is 105 ° C.
Lower Limit Temperature Input Shift Value
0 - 40
´ {(110 - 105) - (25 - 40)} + (25 - 40) = -27.3 ( ° C)
105 - 40
Upper Limit Temperature Input Shift Value
260 - 40
´ {(110 - 105) - (25 - 40)} + (25 - 40) = 52.7 ( ° C)
105 - 40
Section 4-1
43