Calibrating Analog Input - Omron E5CN User Manual

Calibrating Platinum Resistance Thermometers
6-5 Calibrating Platinum Resistance Thermometers
Input power
supply
E5CN
9
10
3
A
4
B
5
B
1,2,3...
Input type 0
Input types 1, 3
Input types 2, 4
Input type 0
Input types 1, 3
Input types 2, 4
114
This example describes how to calibrate the E5CN when it is connected to a
platinum resistance thermometer.
When calibrating a platinum resistance thermometer use wires of the same
thickness as those used to connect the E5CN.
6-dial
1. Connect the power supply.
2. Connect a precision resistance box (called "6-dial" in this manual) to the
platinum resistance thermometer input terminals.
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, the No.2
display changes to "0". You can advance to the next step in this procedure
even if "0" is not displayed.
5. Press the
The No.2 display at this time displays the currently entered count value en-
tered in Hexadecimal. Set the 6-dial as follows:
• Input type 0:
• Input type 1 or 3: 280 Ω
• Input type 2 or 4: 140 Ω
6. Allow the count value on the No.2 display to fully stabilize, then press the
key to temporarily register the calibration setup.
7. Press the
Set the 6-dial as follows:
• Input type 0:
• Input type 1 or 3: 10 Ω
• Input type 2 or 4: 100 Ω
8. Allow the count value on the No.2 display to fully stabilize, then press the
key to temporarily register the calibration setup.
9. Press the
that the data to be temporarily registered is not displayed when it is not en-
tirely prepared.
Press the
and wait two seconds or press the
registered calibration data to EEPROM. Data will not be stored to memory
if you press the
10. The calibration mode is quit by turning the power OFF.
key to display the count value for each input type.
390 Ω
key to set the E5CN to the state on the left.
10 Ω
key. The No.2 display changes to the state on the left. Note
key. The No.2 display changes to "yes". Release the key
key with "no" displayed on the No.2 display.
Section 6-5
key. This stores the temporarily