User manual HANNA INSTRUMENTS HI 96101C

[. . . ] Instruction Manual HI 96101C pH, Chlorine, Cyanuric Acid, Iodine, Bromine, Iron LR 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] · 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). 18 · 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. · 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. In case of water with alkalinity greater than 250 mg/L CaCO3 or acidity greater than 150 mg/L CaCO3, the color of the sample could disappear or develop only partially. To resolve this, neutralize the sample with diluted HCl or NaOH. 19 TOTAL 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-". The meter is now zeroed and ready for measurement. · Remove the cuvette and add one packet of HI 93711-0 reagent. 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. 20 · Alternatively, wait for 2 minutes and 30 seconds 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 total 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. In case of water with alkalinity greater than 250 mg/L CaCO3 or acidity greater than 150 mg/L CaCO3, the color of the sample could disappear or develop only partially. CYANURIC ACID 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-". 21 · Fill a beaker up to the 25 mL mark with the sample, add the content of one packet of HI 93722-0 reagent and swirl gently to mix. [. . . ] · The instrument briefly indicates "donE" upon restoration of factory calibration prior to returning to measurement mode. 32 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. [. . . ]