Thermo Fisher Scientific Alpha COND 1000 - Manual (Page 18)

Operating Instructions Thermo Scientific Alpha COND 1000
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5.2.2.1 Clearing the Advanced Setup security code from the display
After you have entered the security code and returned to the Measurement mode,
the security code “22” still appears on the display whenever you press the ENTER
key. To conceal the security code, you must manually reset the code. To clear the
Advanced Setup security code from the display:
1) Press the ENTER key in the Measurement mode.
2) Set to any security code (not 11 or 22) and complete by pressing ENTER.
NOTE: When you enter the Calibration mode with code “11” or Advanced Setup
mode with security code “22”, the unit automatically enters into the HOLD mode
until you return back to Measurement mode. The HOLD annunciator is
displayed at the upper left of the display. While on HOLD, the current output is
frozen and set point relays are deactivated.