User manual HANNA INSTRUMENTS HI 96743

[. . . ] The blinking "ZERO" indicates that the instrument needs to be zeroed first. 3· For Iron LR: Fill one graduated mixing cylinder up to the 25 mL mark with deionized water. Add the content of one packet of HI 93746-0 reagent, close the cylinder and shake well for 30 seconds. Fill a cuvette with 10 mL of the blank up to the mark and replace the cap. [. . . ] OTHER ERRORS AND WARNINGS: Cap error: Appears when external light enters in the analysis cell. Dead battery: This indicates that the battery is dead and must be replaced. Once this indication is displayed, normal operation of the instrument will be interrupted. The measuring scheme (lamp, cuvette, detector), appears during different phases of zero or reading measurement 2. Four digit secondary display 9 10 www. hannainst. com Alternatively, wait for: Iron LR: 30 seconds Then press READ/ /TIMER. In all cases the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase. 11·The instrument directly displays the concentration in mg/L of iron or the pH 11 measured value on the LCD, depending on the selected parameter. or INTERFERENCES: · Iron LR: Cadmium above 4. 0 mg/L, Chromin6+ above 1. 2 mg/L, Copper above 0. 6 mg/L, Manganese above 50. 0 mg/L, Molybdenum 4. 0 mg/L, Nitrite ion above 0. 8 mg/L, Chromium3+ above 0. 25 mg/L, Cobalt above 0. 05 mg/L, Cyanide above 2. 8 mg/L, Mercury above 0. 4 mg/L, Nickel above 1. 0 mg/L. Ensure that the notch on the cap is positioned securely into the groove. 8· Press CAL CHECK key and the lamp, cuvette and detector icons together with "CAL CHECK" will appear on the display, depending on the measurement phase. 9· At the end of the measurement the display will show the validation standard value. The reading should be within specifications as reported on the CAL CHECKTM Standard Certificate. If the value is found out of specifications, please check that the cuvettes are free of fingerprints, oil or dirt and repeat validation. If results are still found out of specifications then recalibrate the instrument. 8 9 Validation and Calibration procedures Warning: do not validate or calibrate the instrument with standard solutions other than the Hanna CAL CHECKTM Standards, otherwise erroneous results will be obtained. For accurate validation and calibration results, please perform tests at room temperature (18 to 25°C; 64. 5 to 77. 0°F). Use the Hanna CAL CHECKTM cuvettes (see "Accessories") to validate or calibrate instruments. VALIDATION Validation Note: The validation is performed only for the selected parameter. For full validation of 3 the instrument, the following procedure must be performed for each parameter. 2· When the beeper sounds briefly and the LCD displays dashes, the meter is ready. 4-5 3· Place the CAL CHECKTM Standard Cuvette A into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove. 4· Press ZERO/CFM and the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase. 5· After a few seconds the display will show "-0. 0-". 7 7· Place the specific CAL CHECKTM Standard Cuvette B into the cuvette holder, for: Iron LR: B, HI 96746-11 pH: B, HI 96710-11 Calibration Note: Note: It is possible to interrupt the calibration procedure at any time by pressing CAL CHECK or ON/OFF keys. 2· When the beeper sounds briefly and the LCD displays dashes, the meter is ready. [. . . ] Operation of these instruments may cause unacceptable interferences to other electronic equipments, this requiring the operator to take all necessary steps to correct interferences. Any variation introduced by the user to the supplied equipment may degrade the instrument's EMC performance. To avoid damages or burns, do not put the instrument in microwave oven. For yours and the instrument safety do not use or store the instrument in hazardous environments. GLP In GLP mode, the last calibration date can be verified and the factory calibration can be restored. [. . . ]