Yokogawa EXA DC402 Dual-Channel Conductivity Analyzer - Manual (Page 24)

IM 12J05D02-01E
Operation 4-3
4-3. Setting passcodes
In Service Code 52, EXA users can set passcode protection for each one of the three operating levels,
or for any one or two of the three levels. This procedure should be completed after the initial commis-
sioning (setup) of the instrument. The passcodes should then be recorded safely for future reference.
When passcodes have been set, the following additional steps are introduced to the configuration and
programming operations:
Maintenance
Press MODE key.The display shows 000 and *PASS*
Enter a 3-digit passcode as set in Service Code 52 to obtain access to the Maintenance Mode
Commissioning
Press * key. The display shows 000 and *PASS*
Enter a 3-digit passcode as set in Service Code 52 to obtain access to the Commissioning Mode.
Service
From the commissioning menu, select *Service by pressing YES key. The display shows 000 and
*PASS*
Enter a 3-digit passcode as set in Service Code 52 to obtain access to the Service Mode.
NOTE:
See Service Code 52 for the setting of passcodes.
4-4. Display example
The next page shows the sequence of button presses and screens displayed when working in default
configuration.
More or less options will be made available by the configuration of some service codes, or by choices
made in the Commissioning menu.
The following deviations are possible:
Items marked are omitted when switched off in commissioning mode and/or service code 51.
Temperature compensation will be displayed dependent on chosen compensation method: NaCl,
TC 2.1 or matrix.
DISP.2 only appears if mA2 is configured for a 2nd (different) temperature compensation or if %
by weight.2 is enabled in code 55.
W/W % only appears if switched on in service code 55.