12-2
Chapter 12. Calibration and Inspection
Ending calibration and inspection
To end calibration or inspection, do either one of the following.
• On the calibration and checking screen of the Smart Loader Package, select [File]
→ [Quit] from the pull-down menu.
• Click the [×] icon in the upper right corner of the calibration and checking
screen.
The menu screen will be displayed and this device will return to normal mode.
Handling Precautions
• If you disconnect the loader cable before completing calibration or
inspection with the Smart Loader Package, this device will remain in
calibration/inspection mode. If this happens, turn the power off and back
on. This device will return to normal mode.
Precautions for calibration
Observe the following precautions for calibration. Failure to do so will lead to poor
accuracy.
• When calibrating the RTD input, use wires of the same type and length for the
three wires.
• Power this device for at least 1 hour before starting calibration.
• Calibrate this device within the ambient temperature range specified by the
standard conditions.
• Do not calibrate this device where it is exposed to wind or in a fluctuating
ambient temperature.
• Do not calibrate using measuring instruments whose performance does
not satisfy the specifications shown in Measuring instruments required for
calibration (p.12-2) below.
Measuring instruments required for calibration
Measuring instrument Specifications
Reference current/
voltage generator
Accuracy: ±0.025 % or less, minimum resolution (voltage): 1uV or less,
minimum resolution (current): 1 µA or less
Resistor Accuracy: ±0.025 % or less, minimum resolution: 0.1 Ω or less
Ammeter Accuracy: ±0.05 % or less, minimum resolution: 1 µA or less
Voltmeter Accuracy: ±0.025 % or less, minimum resolution: 1 µV or less
Thermometer Accuracy: ±0.1 °C or less, minimum resolution: 0.1 °C or less
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