User manual HANNA INSTRUMENTS HI 96104C

[. . . ] Instruction Manual HI 96104C pH, Chlorine and Cyanuric Acid ISM www. hannainst. com 1 Dear Customer, Thank you for choosing a Hanna product. This manual will provide you with the necessary information for the correct use of the instrument. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst. com. TABLE OF CONTENTS PRELIMINARY EXAMINATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Important note: Free and Total Chlorine have to be measured separately with fresh unreacted samples if both values are requested. The display briefly shows all tags on. 13 · When the beeper sounds briefly and the LCD displays dashes, the meter is ready. The blinking "ZERO" indicates that the instrument needs to be zeroed first. Note: Pay attention that the selected range is the one desired to run measurements. If not, change the range following the instructions from Range Selection. pH MEASUREMENT · Fill the cuvette with 10 mL of unreacted sample, up to the mark, and replace the cap. · Place the cuvette into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove. · Press ZERO/CFM and the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase. · After a few seconds, the display will show "-0. 0-". · Remove the cuvette and add 5 drops of the HI 93710-0 Phenol Red Indicator. · Replace the cuvette into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove. The lamp, cuvette and detector icons will appear on the display, depending on the measurement phase. 14 · The instrument directly displays the measured pH value on the Liquid Crystal Display. FREE CHLORINE MEASUREMENT · Fill the cuvette up to the mark with 10 mL of unreacted sample and replace the cap. · Place the cuvette into the holder and ensure that the notch on the cap is positioned securely into the groove. · Press ZERO/CFM and the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase. · After a few seconds, the display will show "-0. 0-". Replace the cap and shake gently for 20 seconds (or 2 minutes in case of seawater analysis). · Replace the cuvette into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove. · Press and hold READ/ /TIMER for three seconds. An audible "beep" indicates the end of the countdown period. 15 · Alternatively, wait for one minute and just press READ/ /TIMER. In both cases, the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase. · The instrument directly displays concentration in mg/L of free chlorine on the Liquid Crystal Display. INTERFERENCES Interference may be caused by: Bromine Iodine Chlorine Dioxide Ozone Oxidized manganese and Chromium In case of water with hardness greater than 500 mg/L CaCO3, shake the sample for approximately 1 minute after adding the reagent. [. . . ] · The instrument briefly indicates "donE" upon restoration of factory calibration prior to returning to measurement mode. 24 BATTERY MANAGEMENT To save battery, the instrument shuts down after 10 minutes of non-use in measurement mode and after 1 hour of non-use in calibration mode. If a valid measurement was displayed before auto-shut off, the value is displayed when the instrument is switched on. The blinking "ZERO" means that a new zero has to be performed. [. . . ]