User manual HANNA INSTRUMENTS HI 8010

[. . . ] Note: Save all packing material until you are sure that the instrument functions correctly. Any defective items must be returned in the original packing together with the supplied accessories. SPECIFICATIONS Range 0. 00 to 14. 00 pH Resolution 0. 01 pH Accuracy (@20°C/68°F) ±0. 01 pH Typical EMC Deviation ±0. 05 pH Calibration Manual, 2-point through trimmers Temperature Manual, through trimmer Compensation from 0 to 100°C (32 to 212°F) Probe HI 1230B double junction, gel-filled, pH electrode with BNC connector and 1 m cable (included) Environment 0 to 50°C (32 to 122°F); RH max 95% Power Supply 1 x 9V battery approx. [. . . ] ChecktempC) in the sample to be tested, as close as possible one to the other. · Turn the rotary knob to the °C position to display the temperature setting. With the provided screwdriver, adjust the °C trimmer to read on the LCD the temperature measured by the thermometer. · Turn the rotary knob to the pH position, shake the electrode briefly and allow the reading to stabilize. The display will show the pH value compensated for the manually adjusted temperature. · After measurements, switch the meter OFF by turning the rotary knob to the OFF position, disconnect the electrode from the meter and store it with a few drops of HI 70300 solution in the protective cap. Notes: · Before taking measurements, make sure the meter is calibrated. · If the electrode has been left dry, soak the tip in HI 70300 storage solution for at least one hour to reactivate it. · For a faster response time when using refillable electrodes, unscrew the refill hole cap. · If measurements are taken in different samples successively, it is recommended to clean the electrode thoroughly to eliminate crosscontamination. After cleaning, rinse the electrode with some of the sample to be measured. CALIBRATION PROCEDURE For better accuracy, a frequent calibration of the meter is recommended. Moreover, the instrument should be calibrated: a) when the pH electrode or the battery is replaced; b) at least once a month; c) after testing aggressive chemicals; d) where extreme accuracy is required. Preparation · Pour small quantities of pH 7. 01 (HI 7007) and pH 4. 01 (HI 7004) solutions into two clean beakers. · For accurate calibration use two beakers for each solution: the first one for rinsing the electrode, the second one for calibration. · For accurate readings, use pH 7. 01 (HI 7007) and pH 4. 01 (HI 7004) if samples to be measured are acidic, or pH 7. 01 (HI 7007) and pH 10. 01 (HI 7010) for alkaline measurements. · If calibration to NBS standards is required, use pH 6. 86 (HI 7006) instead of pH 7. 01 and pH 9. 18 (HI 7009) instead of pH 10. 01. [. . . ] It is recommended to replace the battery immediately. Replacement must only take place in a non-hazardous area using an alkaline 9V battery. Remove the battery cover and replace the old battery with a new one, while paying attention to its polarity. [. . . ]