Additel 221A Multifunction Temperature Calibrator User Manual - Manual (Page 61)

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1. Enter the calibration password: 316.
2. Select anitem from the calibration list: measurement, source and pressure module.
3. Connect to a more precise, higher‐standardized unit, and finish the calibration step by step.
4. You can restore the factory calibration data by pressingRestore
9.7 24V dc Loop Power
The calibrator supplies an internal loop power at 24V dc. You can choose an item from the dropdown list: ON and OFF.
Note: When the Source mA (internal power supply) is in use, the loop power cannot be turned off.
9.8 Display Language
The calibrator supports a multilingual user‐interface. You can change the display language as follows:
1. Select the Language in the Setup page and press Enter or Select
2. Select an item from the language list box, and press Enter or Done
9.9 Help Guide
The help guide can help you quickly master the device connections and the typical applications of the calibrator.