Resistance Thermometer Calibration - Omron E5CC User Manual

7-4

Resistance Thermometer Calibration

In this example, calibration is shown for Controller with a resistance thermometer set as the input type.
Use connecting wires of the same thickness
adj
30
• Input type 0:
p390
e20c
• Input types 1, 2, 3, 4:
p280
e26b
p 10
4543
E5@C Digital Temperature Controllers User's Manual (H174)
1. Connect the power supply.
2. Connect a precision resistance box (called a "6-dial variable resistor" in this
manual) to the resistance thermometer input terminals, as shown in the following
diagram.
11
Input power supply
12
1
Input power supply
2
3. Turn the power ON.
4. Move to the Calibration Level.
This starts the 30-minute aging timer. This timer provides an approximate timer for
aging. After 30 minutes have elapsed, the No. 2 display changes to 0. You can
advance to the next step in this procedure even if 0 is not displayed.
5. Execute calibration for the main input.
Press the M Key to display the count value for each input type.
The No. 2 display at this time shows the currently entered count value in
hexadecimal. Set the 6-dial as follows:
Input type 0:
•
Input type 1, 2, 3 or 4:
•
Allow the count value on the No. 2 display to fully stabilize, then press the D Key to
temporarily register the calibration settings.
If this count value is outside of the specified range, the No. 2 display will flash and
the count value will not be temporarily registered.
6. When the M Key is pressed, the status changes as shown to the left.
Set the 6-dial to 10 Ω.
Allow the count value on the No. 2 display to fully stabilize, then press the D Key
to temporarily register the calibration settings.
If this count value is outside of the specified range, the No. 2 display will flash and
the count value will not be temporarily registered.
E5CC
A
4
6-dial variable
B'
5
resistor
B
6
E5EC/E5AC
A
22
6-dial variable
B'
23
resistor
B
24
390 Ω
280 Ω
7 User Calibration
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