Checking Indication Accuracy - Omron E5AK User Manual

CHAPTER 7 CALIBRATION

7.6 Checking Indication Accuracy

F Thermocouple
AC100-240V
(AC/DC24V
SOURCE
F Platinum resis-
tance thermome-
ter
7--12
• After calibrating input, make sure that you check indication accuracy
to make sure that the E5AK controller has been correctly calibrated.
• Operate the E5AK controller in the PV/SP monitor (level 0 mode)
mode.
• Check the indication accuracy at the upper and lower limits and mid-
point.
• Preparation
The following figure shows the required device connection. Make sure
that the E5AK controller and cold junction compensator are con-
nected by a compensating conductor for the input type that is to be
used during actual operation.
~
)
10 30
31 32
9 29
8 28
7 27
6 26
5 25
4 24
3 23
2 22
33
1 21
• Operation
Make sure that the cold junction compensator is at 0_C, and set STV
output to the voltage equivalent to the starting power of the check
value.
• Preparation
The following figure shows the required device connection.
~
AC100-240V
(AC/DC24V )
SOURCE
• Operation
Set the 6-dial to the resistance equivalent to the check value.
20
19
18
17
16
15
14
13
12
11
Compensation
conductor
10 30
31 32
9 29
8 28
7 27
6 26
5 25
4 24
3 23
2 22
33
1 21
Cold junction
compensator
STV
20
19
18
17
16
15
14
13
6-dial
12
11