Thermocouple Calibration - Omron E5*D series User Manual

7 User Calibration
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 Digital Controller.
• If you perform user calibration of the thermocouple, the temperature on the ambient temperature
monitor will also be affected.
 Preparations
E5@D
Input power supply
The terminal numbers are as follows:
• Input Terminals (Negative and Positive)
E5CD: 5 and 6
E5ED: 23 and 24
• Input Power Supply (C and D)
E5CD: 11 and 12
E5ED: 1 and 2
• 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, C/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.
7 - 4
STV
C
−
Cold junction
D
compensator
+
0°C/32°F
Compensating conductors
E5@D-B
C
*
Input power supply
C'
D
*
D'
* Common terminals are indicated with asterisks (*).
The terminal numbers are as follows:
• Input Terminals (Negative and Positive)
E5CD-B: 7 and 8
E5ED-B: 31 and 32
• Input Power Supply (C or C', and D or D')
E5CD-B: 13 or 14, and 15 or 16
E5ED-B: 1 or 2, and 3 or 4
E5@D Digital Temperature Controllers User's Manual (H224)
STV
−
Cold junction
compensator
+
0°C/32°F
Compensating conductors