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Instruction Manual

HI 84432

TITRATABLE ACIDITY

MINITITRATOR & pH METER

for Fruit Juices

Z Z Z K D Q Q D L Q V W F R P

Summary of Contents for HI 84432

Page 1: ...1 Instruction Manual HI 84432 TITRATABLE ACIDITY MINITITRATOR pH METER for Fruit Juices ZZZ KDQQDLQVW FRP...

Page 2: ...rovide you with the necessary information for the correct use of the instrument Please read it carefully before using the meter If you need additional technical information do not hesitate to e mail u...

Page 3: ...F OPERATION 7 FUNCTIONAL AND PHYSICAL DESCRIPTION 8 TITRATOR STARTUP 10 SETUP CONFIGURATION MENU 11 ELECTRODE PREPARATION 15 ELECTRODE CALIBRATION PROCEDURE 16 pH BUFFER TEMPERATURE DEPENDENCE 20 PUMP...

Page 4: ...and pH meter designed for the rapid and accurate analysis of Total Titratable Acidity in fruit juices By eliminating subjective factors including color indicators errors in mathematical calculations o...

Page 5: ...TheHI84432minititratorusesamethodbasedontheOfficialMethodsofAnalysisofAOACInternational The fruit juice is titrated with a sodium hydroxide solution until the end point at 8 2 pH is reached determine...

Page 6: ...speed 600 rpm Log data Up to 50 samples pH meter pH meter 2 0 to 16 0 pH 2 00 to 16 00 pH pH Resolution 0 1 pH 0 01 pH pH Accuracy 0 01 pH pH Calibration 1 2 or 3 calibration points 3 available buffe...

Page 7: ...lume and the titrant volume and concentration It is important to titrate fresh samples of the fruit juice For increased measurement precision keep the fruit juices in caped vessels avoid prolonged exp...

Page 8: ...dicated guide tube for titrant tip 7 Peristaltic pump tube FRONT VIEW FRONT VIEW FRONT VIEW FRONT VIEW FRONT VIEW REAR VIEW REAR VIEW REAR VIEW REAR VIEW REAR VIEW 8 Temperature probe 9 pH Electrode 1...

Page 9: ...nter SETUP Recall or GLP selection menu while instrument is in pH or Titration main screen STIR used to start stop the stirrer Note The stirer starts automatically during pump calibration and titratio...

Page 10: ...for details Pay attention to the Acidity Unit Connect the pH sensor and temperature probe to the instrument Calibrate the pH electrode At least a single point calibration is necessary for titration Pl...

Page 11: ...Modify to access the calibration timeout value modify parameter SETUP CONFIGURATION MENU Options CA TA MA Press the corresponding function key to change the option Concentration unit The titrator s s...

Page 12: ...t the display s contrast Press Modify to change the display s contrast Use the ARROW keys or in order to increase decrease the displayed constrast Press Accept to confirm or ESC to return to the setup...

Page 13: ...rn to the setup This option is used to set the instrument s date and time Press Modify to change the date time Date Time Use the ARROW keys to select the desired format Press Accept to confirm the val...

Page 14: ...ibration can be confirmed A long beep alert sounds when the pressed key is not active or a wrong condition is detected while in calibration Beep On Press the corresponding function key to change the l...

Page 15: ...date and time and temperature factory calibration date and time Press ESC to return to the Setup mode Meter information ELECTRODE PREPARATION PREPARATION PROCEDURE Remove the electrode protective cap...

Page 16: ...ted buffer solutions into clean beakers For accurate calibration use two beakers for each buffer solution the first one for rinsing the electrode and the second one for calibration Put a magnetic stir...

Page 17: ...older Rinse the electrodes in a beaker containing the second buffer rinsing solution Place the electrode holder with electrodes on the top of the beaker lock cap by turning If necessary press the ARRO...

Page 18: ...the calibration The instrument stores the calibration value and returns to pH meter titrator calibration menu where the date and time for the last pH will be updated Notes A buffer confirmed during t...

Page 19: ...the current and the previous old calibration Clear the calibration parameters by pressing Clear and proceed with calibration from the current calibration point The instrument will keep all the confirm...

Page 20: ...1 0 7 0 2 8 0 2 3 1 0 4 3 1 7 8 3 8 5 1 4 0 0 4 0 1 7 4 3 8 0 1 0 5 0 0 4 7 0 7 1 3 8 5 1 9 5 0 0 4 4 0 7 7 2 8 0 2 8 6 0 0 4 3 0 7 3 2 8 5 2 7 7 1 0 4 1 0 7 0 2 8 0 3 6 8 2 0 4 0 0 7 7 1 8 5 3 5 9 3...

Page 21: ...ired a pump calibration hasn t been performed or more than 3 days have passed since the last pump calibration PUMP TUBE INSTALLATION To mount the new peristaltic pump tube follow next steps Position o...

Page 22: ...return to the main screen press ESC or Stop During a purge a countdown timer displays remaining time in 5 minute purge Press Pause to interrupt the purge process Press Pause or Stop by pressing the c...

Page 23: ...eaker in the appropriate place on the instrument top Place the electrode holder on the top of the beaker and secure it by turning clockwise Immerse the calibrated pH and the temperature electrodes app...

Page 24: ...to indicate that the pump and the stirrer are working On the lower right side of the display is shown the amount of time that has passed since the beginning of the calibration From the titrator main s...

Page 25: ...s The calibration of the pump is dependent on concentration unit selected during SETUP If an erroneous situation is encountered during the calibration an error message is displayed and the calibration...

Page 26: ...MXLFHV VDPSOHV PXVW EH VWRUHG LQ FDSSHG botlles Avoid disturbing any sediment in the sample 3ODFH WKH HOHFWURGH KROGHU RQ WKH WRS RI WKH EHDNHU and secure it by turning clockwise PPHUVH WKH S DQG WKH...

Page 27: ...has been started IWHU WKH WLWUDWLRQ LV FRPSOHWH WKH FRQFHQWUDWLRQ YDOXH LV GLVSOD HG LQ WKH VHOHFWHG XQLW 3UHVV Unit to change the display unit 3UHVV LOG WR UHFRUG WKH FRQFHQWUDWLRQ YDOXH LQWR WKH LQV...

Page 28: ...ASUREMENT Calibrate the instrument in 8 20 pH buffer solution at least once a day before you start to perform measurements Purge the peristaltic pump to have the fresh titrant when starting a new cali...

Page 29: ...ther unit Use the ARROW keys when is displayed to scroll between the log records Press ESC to return to the previous screen If Delete was pressed the instrument will ask for confirmation Use the ARROW...

Page 30: ...a calibration hasn t been performed the message Not Calibrated will be displayed If the titrator log is empty the message No Records will be displayed TITRATOR GLP INFORMATION Press MENU while in Tit...

Page 31: ...ration hasn t been performed or the number of days exceedes calibration time out value set the message CAL DUE will blink on the left side of the display see Calibration timeout option in Setup for de...

Page 32: ...bilize When the reading becomes stable the unstable measurement symbol will disappear If the pH reading is less than 2 00 pH or greater than 16 00 pH the closest full scale value 2 00 pH or 16 00 pH w...

Page 33: ...played to scroll between the records If Delete was pressed the instrument will ask for confirmation Use the ARROW keys to focus on the record to be deleted Press Confirm to delete the record or ESC to...

Page 34: ...ctrode GLP the time and date of the last calibration offset slope electrode condition calibration timeout and the calibration buffers If a calibration hasn t been performed the message Not Calibrated...

Page 35: ...enter user calibration screen press and hold down the ARROW keys simultaneously then power on the instrument After a few seconds the User calibration screen is displayed Press Temp function key to en...

Page 36: ...d close to the selected calibration point the unstable measurement symbol will disappear and the Confirm key will become active Press Confirm to confirm the calibration point The instrument will retur...

Page 37: ...cheme command prefix comand CR where command prefix is the ASCII character having the code 16 command is the command code Note Either small or capital letters can be used Upon reception of a command t...

Page 38: ...rmation for each buffer type 1 char O standard status 1 char N new calibrated in last calibration O old from an old calibration warning during calibration 2 chars 00 no warning 04 Clean Electrode warn...

Page 39: ...ution 01 pH meter 0 01 resolution 02 titrator Measured value status R in range O over range U under range Measured value 7 chars for the pH meter log this is the measured pH value for the titrator log...

Page 40: ...e v e h t t c a t n o c n o i t a r b i l a c p m u p e h T d e m r o f r e p e b t n a c g n i b u t p m u p n e k o r B d e t a n i m a t n o c r o g n o r W n o i t a r b i l a c p m u p n o i t u...

Page 41: ...nse time the glass bulb should be kept moist and not allowed to dry out Replace the solution in the protective cap with a few drops of HI 70300 or HI 80300 Storage Solution Follow the Preparation Proc...

Page 42: ...LL SOLUTION HI 7071 Filling solution for HI 1131B 4x30 mL ELECTRODE STORAGE SOLUTION HI 70300M Storage Solution 230 mL bottle CLEANING SOLUTION HI 7061M Electrode Cleaning Solution 230 mL bottle OTHER...

Page 43: ...n shipping any instrument make sure it is properly packaged for complete protection To validate your warranty fill out and return the enclosed warranty card within 14 days from the date of purchase WA...

Page 44: ...210 823 5192 Fax 210 884 0210 Indonesia Tel 210 4584 2941 Fax 210 4584 2942 Japan Tel 03 3258 9565 Fax 03 3258 9567 Korea Tel 02 2278 5147 Fax 02 2264 1729 Malaysia Tel 603 5638 9940 Fax 603 5638 982...

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