Hanna Instruments HI 504, Инструкция по эксплуатации

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86
LAST CALIBRATION DATA
If the meter is set as pH controller, the following data about
the last calibration are stored in the EEPROM:
• Date
• time
• offset, in mV
• slope, in mV/pH
• up to two buffers .
If the meter is set as ORP controller, the data stored in the
EEPROM are the following:
• Date
• time
• first calibration point
• second calibration point .
While displaying these data the pH/ORP controller remains
in control mode .
To enter the last calibration data
mode, press the CAL DATA key .
If the meter has never been calibrated
or an EEPROM reset has occurred,
no calibration data is shown when
CAL DATA is pressed . The “no CAL”
message will blink for a few seconds,
then the meter skips back to the
previous mode .
If the meter is set as pH controller, once entered the last
calibration data, the following messages could scroll twice
on the primary LCD before showing the calibration date:
• “Old probe”
• “Dead probe”
• “Probe needs calibration” .
Otherwise the last calibration date
will appear on the primary LCD dis-
played as DD .MM format, while the
secondary display will show the last
two digit of the year .