Additel 221A Multifunction Temperature Calibrator User Manual - Manual (Page 29)

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7.3 Key Functions
Table7‐2
No. Name Description
1 Power key
2 Starts HART communications function (only HART is available).
3 Selects the millivolts, volts, pulse or frequency measurement or the sourcing function.
4 Selects the resistance or limit switch test measurement or selects the resistance source.
5 Selects the RTD or thermocouple measurement or the sourcing function.
6 Selects mA (current) measurement or the sourcing function.
7
Selects pressure measurement or the pressure sourcing function (when pressure module is
connected).
8 Starts task management.
9 Enters Setup page.
10 Capture and save snapshot (press and hold to the snapshot management).