User manual HANNA INSTRUMENTS HI 9126

[. . . ] (03) 9769. 0666 · Fax (03) 9769. 0699 Instruction Manual China: Tel. (10) 88570068 · Fax (10) 88570060 HI 9126 Calibration Check Waterproof pH/mV/ºC Meter Egypt: Tel. (662) 619. 0708. 11 · Fax (662) 619. 0061 MAN9126R2 02/08 United Kingdom: Tel. (401) 765. 7500 · Fax (401) 765. 7575 For e-mail contacts and a complete list of Sales and Technical offices, please see www. hannainst. com. w w w. [. . . ] D isp la y shows "CL E AN E L E CTROD E " b linking . Broken temp era ture p rob e. D ifference b etween new a nd p revious ca lib ra tion ha s b een d etected . L ow b a ttery level. D isp la y shows b linking b a ttery symb ol. "WRONG CAL IBRATION" is d isp la yed d uring p H ca lib ra tion p roced ure. Broken p H electrod e. Rep la ce temp era ture p rob e. Rep la ce electrod e. Wrong or conta mina ted b uffer. Check tha t b uffer solution is correct a nd fresh. Dead batteries or Auto-off feature is enabled: in this case, meter shuts off after 20 min of non-use. L oa d ed d efa ult p H ca lib ra tion va lues. Cha rg e b a tteries. Press ON/OFF. "E r0, E r1, E r2" messa g e a t sta rt up . "Clr" messa g e a t sta rt up. Contact your dealer or any Hanna Service Center. Perform p H ca lib ra tion. 8 25 For refillable electrodes, if the refill solution (electrolyte) is more than 2½ cm (1") below the fill hole, add the appropriate Electrolyte Solution. MEASUREMENT Rinse the electrode tip with distilled water, immerse it 4 cm (1½") in the sample and stir gently for a few seconds. For a faster response and to avoid cross contamination of the samples, rinse the electrode tip with the solution to be tested, before taking any measurements. STORAGE PROCEDURE To minimize clogging and ensure a quick response time, the glass bulb and the junction should always be kept moist. When not in use, store it with a few drops of HI 70300 storage solution in the protective cap. For refillable electrodes: Refill the electrode with fresh electrolyte (see the electrode's specifications to select the correct refilling solution). CLEANING PROCEDURE Soak in Hanna HI 7061 General Cleaning · General Solution for approximately ½ hour. · Protein Soak in Hanna HI 7073 Protein Cleaning Solution for 15 min. · Inorganic Soak in Hanna HI 7074 Inorganic CleaningSolution for 15 min. · Oil/grease Rinse with Hanna HI 7077 Oil & Fat Cleaning Solution for 1 min. IMPORTANT: After performing any of the cleaning procedures, rinse the electrode thoroughly with distilled water and soak it in HI 70300 Storage Solution for at least 1 hour before taking measurements. Note: While in MEM mode, the user can switch between pH and mV by pressing the RANGE key. A stored value can be recalled by pressing MR: the display will show the memorized reading and the RECALL MEMORIZED tag, as long as the MR key is pressed. Note: MR will only display the range that was active when MEM was pressed. BACKLIGHT FEATURE The meter is provided with a Backlight feature, which can be easily accessed through the LIGHT key. Note: The backlight automatically shuts off after approximately 1 minute of nonuse. 24 9 p H CALIBRATION It is recommended to calibrate the instrument frequently, if high accuracy is required. [. . . ] Note: When an abnormal condition in the RTC is detected, the "condition" is cleared and only the bargraph frame is shown on the display. CLEAN ELECTRODE Each time pH calibration is performed, the meter internally compares the new calibration with the one previously stored. When this comparison indicates a significant difference, the CLEAN ELECTRODE message blinks on the LCD to advise the user that the pH electrode may need to be cleaned (see "Electrode Conditioning & Maintenance" section). Note: If the calibration data are cleared, the comparison is done with the default values. Notes: · The charging process is performed at a low current, the instrument can be left on the recharger more than 16 hours, without damaging the rechargeable batteries. [. . . ]