Input Adjustment Functions - Omron E5AR-T User Manual

● Obtaining Input
Correction Values
for 2-point
Correction
Preparations
● Procedure for
Using a 2-point
Correction
Temperature readings are taken using the E5AR-T/ER-T at any two
points: the actual temperature at the required location (the object) and
the present temperature of the E5AR-T/ER-T.
1. Set the input type based on the sensor.
2. Obtain a temperature sensor that can measure the temperature of the
object as shown in Figure 1.
500 C
550 C
Figure 1. Configuration for Input Correction
1. Correction will be performed based on the temperature readings at two
points: one near room temperature and one near the desired SP. Measure
the temperature of the object when it is near room temperature and when it
is near the SP (B), and check the corresponding readings of the Controller
(A) at the same temperatures.
2. Set the Input Correction 1 parameter to the difference between the temper-
ature of the object (B) and the Controller reading (A) when near room
temperature,
Object temperature (B)
and set the Input Value 1 for Input Correction parameter to the Controller
reading (A).
3. Set the Input Correction 2 parameter to the difference between the temper-
ature of the object (B) and the corresponding Controller reading (A) when
near the SP,
Object temperature (B)
and set the Input Value 2 for Input Correction parameter to the Controller
reading (A).
4. After making the settings, check the reading of the Controller (A) and the
temperature of the object (B).
5. Correction has now been performed at two points, near room temperature
and near the SP. If you wish to improve the accuracy near the SP, establish
two more correction points above and below the SP. Figure 2 illustrates the
correction.

5.1 Input Adjustment Functions

(A) E5AR-T Digital
Controller
(B) Thermometer
Controller reading (A)
Controller reading (A)
5-3