User manual HANNA INSTRUMENTS HI 84102

[. . . ] Instruction Manual TITRATABLE TOTAL ACIDITY MINITITRATOR for wine analysis HI 84102 w w w. c o m 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. Please read it carefully before using the meter. [. . . ] · Place the peristaltic pump tube on the pump. See the Pump Tube Replacement section for the procedure. · Remove the reagent bottle cap and place the bottle cap of the tubes set. Place the reagent bottle in the appropriate place on the titrator top. · Turn the instrument ON using the power switch from the rear panel of the instrument and wait until it displays dashes. 9 GUIDE TO DISPLAY CODES This prompt appears for a few seconds each time the instrument is turned ON. Main screen display. Main screen display with stirrer active. Purging mode message. PUMP CALIBRATION MESSAGES This screen appears each time the meter enters pump calibration mode. The meter is ready to start pump calibration by pressing the START STOP button. This screen appears while pump calibration is in progress. Pressing CAL PUMP or START STOP button, the minititrator returns to the main screen. This prompt appears for a few seconds before returning to the main screen, when pump calibration is done. This error message appears when the sample concentration exceeds 25g/L. 10 This error message appears when the standard solution is wrong. This error message appears when the input readings (pH, temperature) exceed the input limits. pH CALIBRATION MESSAGES This screen appears each time the titrator enters pH calibration mode. This screen appears when the pH calibration is started by pressing the START STOP button. Pressing again START STOP or the CAL button, the pH calibration is aborted and the instrument returns to the main screen. This prompt appears for a few seconds before returning to the main screen, when the pH calibration is done. The "WRONG" " " / "WRONG" " " tags alternatively blinking appear when the buffer solution is not correct or when the probe is wrong. Clean the electrode by following the Cleaning Procedure or check the quality of the buffer in order to continue the pH calibration. Press the CAL or START STOP button to leave pH calibration mode. SETUP MESSAGES This screen appears each time the minititrator enters SETUP mode. Press the CAL button in order to change the end-point. Press the SETUP button to exit SETUP mode at any time. 11 TITRATION MESSAGES This screen appears each time the minititrator enters TITRATION mode. Press the START STOP button in order to stop the titration and return to the main screen. The titration result, expressed as concentration of tartaric acid in g/L, is displayed at the end of the titration process. Press the START STOP button to return to the main screen. This error message appears when the input reading (pH, temperature) exceeds the input limits. This screen appears when the evaluated concentration is out of range. TIPS FOR AN ACCURATE MEASUREMENT The instructions listed below should be carefully followed during testing to ensure best accuracy. [. . . ] 18 WARRANTY HI 84102 is warranted for two years against defects in workmanship and materials when used for its intended purpose and maintained according to the instructions. This warranty is limited to repair or replacement free of charge. Damage due to accident, misuse, tampering or lack of prescribed maintenance is not covered. If service is required, contact your dealer. [. . . ]