Calibrating Current Input - Omron e5ck User Manual

7.4 Calibrating Current Input

F Preparation
F Calibration
~
AC100-240V
(AC/DC24V )
5
SOURCE
4
3
2
1
• In the above figure, STV refers to a standard DC current/voltage source,
and DMM refers to a precision digital multimeter. However, note that
the DMM is required only when the transfer output function is sup
ported.
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 (4) to (7).
(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 ag
ing time when aging is required.
(2) Press the key. The display changes to [
display). Set the STV output to 20 mA. 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. The display changes to [
display). Set the STV output to 0 mA. When the value on the No.2 dis
play has stabilized (changes of several digits max.), press the
to temporarily store the calibration data.
(4) Next, calibrate the transfer output function. If the transfer output
function is not supported, skip to step (8). Press the
play changes to [
(5) Set the output to 20 mA by the
voltage on the digital multimeter. In the example on the left, the dis
play indicates that the value two digits smaller than before calibra
tion is 20 mA".
(6) Press the key. The display changes to [
display).
(7) Set the output to 4 mA by the
voltage on the digital multimeter. In the example on the left, the dis
play indicates that the value two digits smaller than before calibra
tion is 4 mA".
(8) Press the key until the display changes to the data store display.
Press the key. The No.2 display changes to [
conds later the calibration data is stored to internal memory. If you
press the key when the No.2 display reads [
data is disabled.
(9) This completes calibration of the current input. Press the
return the display to [
7.4 Calibrating Current Input
10
11 12
9
8
7
13 14
6
DMM
] (20 mA calibration display).
or keys while monitoring the
or keys while monitoring the
].
STV
] (20 mA calibration
] (0 mA calibration
key
key. The dis
] (4 mA calibration
], and two se
], the calibration
key to
7–9