CHAPTER 4 APPLIED OPERATION
E5CK
4--12
•
Parameters are displayed on the No.1 display, and the process value is
displayed in Hexadecimal on the No.2 display.
•
Normally, the process value changes by several digits. The process value
flashes, for example, when a sensor error causes the process value to
stray from the calibration target range.
•
When the process value display is flashing, the process value is not saved
as data even if the
key is pressed.
•
Once the E5CK controller has been calibrated by the user, [
] is pre-
ceded by the “.” mark when the calibration mode is selected.
•
Calibrate according to the type of thermocouple, thermocouple 1 group
(K1, J1, L1, E, N, W, PLII) and thermocouple 2 group (K2, J2, L2, R, S,
B, T, U).
•
When calibrating, do not cover the bottom or top of the controller. Also,
do not touch the input terminals (Nos. 6 and 7) and compensating con-
ductor on the E5CK controller.
F
Preparations
5
4
3
2
1
10
9
8
7
6
13 14
11 12
STV
DMM
0
°
C/32
°
F
Cold junction
compensator
Compensating
conductor
SOURCE
AC100-240V
(AC/DC24V )
•
Set the cold junction compensator to 0
_
C. However, make sure that
internal thermocouples are disabled (tips are open).
•
In the above figure, STV refers to a standard DC current/voltage source,
and DMM refers to a precision digital multimeter.
•
Use a compensating conductor selected thermocouple. However, note
that when thermocouple R, S, E, B, W or PLII is used, the compensating
conductor can be substituted with the cold junction compensator for
thermocouple K and compensating conductor.
Correct process values cannot be obtained if you touch the contact ends of the com-
pensating conductor during calibration of a thermocouple. Accordingly, short
(enable) or open (disable) the tip of the compensating conductor inside the cold junc-
tion compensator as shown in the figure below to create a contact or non-contact
state for the cold junction compensator.
Connecting the
Cold Junction Con-
ductor
0
°
C/32
°
F
0
°
C/32
°
F
Cold junction
compensator
Cold junction
compensator
E5CK
controller
E5CK
controller
Compensating conductor
Compensating conductor
Short
Open
F
Calibration item
menu
Calibration item
parameter
Process value
F
Calibration save
mark
calibration save mark
J
Calibrating ther-
mocouple