Omron E5EK - MANUAL 2 User Manual page 121

7.3 Calibrating Platinum Resistance Thermometers
' Preparation
' Calibration: plati-
num resistance
thermometer 1
Short terminal
Nos. 11 to 13
Change wiring.
Short terminal
Nos. 11 to 13
Continued on next page
7.3 Calibrating Platinum Resistance Thermometers
The calibration procedure is divided into two descriptions, one for group
1 platinum resistance thermometers (Jpt100, Pt100 : 199.9 to 650.0_C)
and group 2 platinum resistance thermometers (Pt100 : 100.0 to 100.0_C).
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.
Connect (short) the leads from terminal Nos. 11 and 12.
(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
(300 calibration display). Set the 6 dial to 300 . When the value on
the No.2 display has stabilized (changes of several digits max.), press
the key to temporarily save the calibration data.
(3) Press the key to switch to the [
Short terminal Nos. 11 to 13. When the value on the No.2 display has
stabilized (changes of several digits max.), press the
rarily store the calibration data.
(4) Next, calibrate the B B' input. Change the wiring as follows.
Make the connection across terminal Nos. 11 and 12 and the 6 dial as
short as possible. Short terminal Nos. 11 and 13.
(5) Press the key to display [
6 dial to 10 . When the value on the No.2 display has stabilized
(changes of several digits max.), press the
the calibration data.
(6) Press the key to display [
minal Nos. 11 to 13. When the value on the No.2 display has stabilized
(changes of several digits max.), press the
the calibration data.
10 20
21 22
9 19
8 18
7 17
6 16
5 15
4 14
3 13
2 12
23
1 11
] (0
15
14
13
6-dial
12
11
] (10 calibration display). Set the
] (0 calibration display). Short ter
6-dial
key to display [
calibration) display.
key to tempo
key to temporarily store
key to temporarily store
7–7
]