Hanna Instruments PCA 300 Series - Manual (Page 27)

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• Press SETPOINT twice to store the new set-
point.
• To set the range within which the proportional dosing occurs
(delta), press DIAG. The display will show the last diag-
nostic mode and the right-most numerical digit will blink.
• Enter code 400 using the and keys.
• Press DIAG and the possible settings, 0.1, 0.2, 0.3, 0.4,
0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.5, 2.0, will scroll.
Note If the analyzer has been reset or turned on, “0.1” is the de-
fault delta.
• Store the desired delta, e.g. 0.5, pressing DIAG when the
desired value appears.
• When dosing is active, the DOSE
LED turns on and the corresponding
relays closes.
Note If the measured concentration is lower than the delta, the
dosing will be continuous until the next measurement is taken.
DIAG
DIAG
DIAG