6.3Calibrating Thermocouples
E5GN
6–5
This example describes how to calibrate the E5GN when thermocouple
input is currently selected on an E5GN supporting thermocouple input.
(1) Connect the power supply.
(2) Connect a standard DC current/voltage source (STV), precision digiĆ
tal multimeter (DMM) and contact junction compensator (e.g. zero
controller as in figure) to the thermocouple input terminals, as shown
in the figure below.
Leave open.
Compensating conductor of currently
selected thermocouple
Use K thermocouple compensating
conductor for E, R, S and B
thermocouples or non-contact
temperature sensor.
Zero
controller
STV DMM
OUTPUT
INPUT
-
+
E5GN
89
(3) Turn the power ON.
(4) Move to the calibration level.
This starts the 30Ćminute aging timer. This timer provides an approxĆ
imate timer for aging. After 30 minutes, the No.2 display changes to
0". You can advance to the next step in this procedure even if 0" is
not displayed.
(5) Press the key to set the E5GN to the state on the left.
The No.2 display at this time displays the currently entered count
value entered in Hexadecimal. Set the STV as follows:
ăĂ• Input types 0, 2, 5, 6, 8 : Set to 54 mV".
Ăă• Input types 1, 3, 4, 7, 9, 10, 11, 12, 13, 14, 15, 17, 18: Set to 24 mV".
Allow the count value on the No.2 display to fully stabilize, then press
the key to temporarily register the calibration setup.
Input types 0, 2, 5, 6, 8
Input types, 1, 3, 4, 7,
9, 10, 11, 12, 13, 14, 15
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