Calibrating Voltage Input - Omron e5ck User Manual

CHAPTER 7 CALIBRATION

7.5 Calibrating Voltage Input

F Preparation
F Calibration:
0 to 5V, 1 to 5V
Cont'd on next page
7–10
~
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 [
play). Set the STV output to 5 V . When the value on the No.2 display
has stabilized (changes of several digits max.), press the
temporarily store the calibration data.
(3) Press the key. The display changes to [
play). Set the STV output to 0 V . When the value on the No.2 display
has stabilized (changes of several digits max.), press the
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".
10
11 12
9
8
7
13 14
6
DMM
] (20 mA calibration display).
or
or keys while monitoring the
STV
] (5 V calibration dis
key to
] (0 V calibration dis
key to
key. The dis
keys while monitoring the
] (4 mA calibration