Hanna Instruments HI 96741C Instruction Manual

22 23To display the calibration date:• Press and hold for three secondsRANGE/GLP/ to enterGLP mode. Thecalibration month and day will appear onthe main display and the year on thesecondary display.• If no calibration was performed, thefactory calibration message, “F.CAL” willappear on the main display and theinstrument returns tomeasurement modeafter three seconds.It is possible to delete the calibration andrestore factory calibration.• Press and hold for three secondsRANGE/GLP/ to enterGLP mode.• Press READ/ /TIMER to enter in thefactory calibration restore screen. Theinstrument asks for confirmation of usercalibration delete.• Press ZERO/CFM to restore the factorycalibration or press RANGE/GLP/ againto abort factory calibration restore.• The instrument briefly indicates “donE”upon restoration of factory calibration priorto returning tomeasurement mode.FACTORY CALIBRATION RESTOREInGLP mode, the last user calibration date can be verified and the factory calibration can berestored.LAST CALIBRATION DATEGLP• Press RANGE/GLP/ to edit the desiredyear (2009-2099). If the key is keptpressed, the year number is automaticallyincreased.• When the correct year has been set, pressZERO/CFM or READ/ /TIMER toconfirm. Now the display will show themonth blinking.• Press RANGE/GLP/ to edit the desiredmonth (01-12). If the key is kept pressedthe month number is automaticallyincreased.• When the correct month has been set,press ZERO/CFM or READ/ /TIMERto confirm. Now the display will showthe day blinking.• Press RANGE/GLP/ to edit the desiredday (01-31). If the key is kept pressedthe day number is automatically increased.Note:It is possible to change the editingfrom day to year and to month bypressing READ/ /TIMER.• Press ZERO/CFM to save the calibrationdate.• The instrument displays “Stor” for onesecond and the calibration is saved.• The instrument will return automaticallytomeasurement mode by displayingdashes on the LCD.DATE INPUToror

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