Calibrating Platinum Resistance Thermometer - Omron E5AK User Manual

7.3 Calibrating Platinum Resistance Thermometer

F Preparation
F Calibration
Short terminal
Nos.11 to 13
Change wiring.
Short terminal
Nos.11 to 13
Cont'd on next page
7.3 Calibrating Platinum Resistance Thermometer
~
AC100-240V
(AC/DC24V )
SOURCE
· Use leads of the same thickness when connecting to the platinum resis-
tance thermometer.
· In the above figure, 6-dial refers to a precision resistance box, and DMM
stands for a digital multimeter. However, note that the DMM is required
only when the transfer output function is supported.
· Connect (short) the leads from terminal Nos. 11 and 12.
This example describes how to calibrate a platinum resistance thermome-
ter when the transfer output function is supported. If the transfer output
function is not supported, skips steps (7) to (10).
(1) When [ ] is displayed, the 30-minute timer is displayed on the
No.2 display and counts down. This timer serves as a guide for the
aging time when aging is required.
(2) First, calibrate the main input. Press the
(300W calibration display). Set the 6-dial to 300W. When the value on
the No.2 display has stabilized (changes of several digits max.), press
the key to temporarily store the calibration data.
(3) Press the key to switch [
terminal No. 11 to 13. When the value on the No.2 display has stabi-
lized (changes of several digits max.), press the
store the calibration data.
(4) Next, calibrate the B-B' input. Change the wiring as follows.
Make the connection across terminals 11 and 12 and the 6-dial as
short as possible. Short terminals 11 and 13.
(5) Press the key to display [
6-dial to 10W.. When the value on the No.2 display has stabilized
(changes of several digits max.), press the
store the calibration data.
10 30
31 32
9 29
8 28
7 27
6 26
5 25
4 24
3 23
2 22
33
1 21
DMM
] (0W calibration) display. Short
15
14
13
6-dial
12
11
] (10W calibration display). Set the
20
19
18
17
16
15
14
13
12 6-dial
11
key to display [
key to temporarily
key to temporarily
7--7
]