Hanna Instruments PCA 300 Series - Manual (Page 23)

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• Enter code 700 using the and keys.
• Press DIAG and “brt” will be displayed. Then the bright-
ness of the display will begin to change through the three
levels.
• Press DIAG at one of the 3 brightness level
and the analyzer will store that brightness
level. If DIAG is not pressed, the brightness
will remain at the present level.
MINIMUM AND MAXIMUM CONCENTRATION
In any moment it is possible to recall the current minimum
and maximum chlorine values taken since the last reset.
Simply press MAX/MIN and the display will show alternately
the two levels.
After a few seconds the display will revert to the last reading.
To clear the current minimum and maximum concentrations,
press DIAG. The display will show the last diagnostic mode
and the right-most numerical digit will blink.
Enter Priming code 503 using the and keys.
DIAG
DIAG
MAX
MIN
DIAG