Omron E5AC-T User Manual

7 User Calibration
7 - 4
E5@C-T Digital Temperature Controllers User’s Manual (H185)
7-3 Thermocouple Calibration
• Calibrate according to the type of thermocouple: thermocouple group 1 (input types 5, 7, 11, 12, 15,
19, and 20) and thermocouple group 2 (input types 6, 8, 9, 10, 13, 14, 16, 17, 18, 21, 22, 23, and 24).
• When calibrating, do not cover the bottom of the Controller. Also, do not come into contact with the
input terminals (E5CC-T: terminals 5 and 6, E5EC-T/AC-T: terminals 23 and 24).
z Preparations
• Set the cold junction compensator designed for compensation of internal thermocouples to 0°C.
Make sure that internal thermocouples are disabled (i.e., that tips are open).
• In the above figure, STV indicates a standard DC current/voltage source.
• Use the compensating conductor designed for the selected thermocouple. When thermocouples R,
S, E, B, W, or PLII or an infrared temperature sensor is used, the cold junction compensator and the
compensating conductor can be substituted with the cold junction compensator and the
compensating conductor for thermocouple K.
Additional Information
Connecting the Cold Junction Compensator
Correct process values cannot be obtained if you touch the contact ends of the compensating
conductor during calibration of a thermocouple. Accordingly, short-circuit (enable) or open
(disable) the tip of the thermocouple inside the cold junction compensator as shown in the figure
below to create a contact or non-contact state for the cold junction compensator.
Input power supply
Compensating conductors
−
+
STV
5
6
11
12
E5CC-T
E5EC-T/AC-T
+
1
2
23
STV
24
−
Compensating conductors
0°C/32°F
Cold junction
compensator
0°C/32°F
Cold junction
compensator
Input power supply
E5@C-T
0°C/32°F
0°C/32°F
Compensating conductor
Compensating conductor
Cold junction compensator
Cold junction compensator
Short-circuit
Open
E5@C-T

Omron E5AC-T Specifications

General

Brand	Omron
Model	E5AC-T
Category	Temperature Controller
Language	English