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Hanna Instruments HI84502 Instruction Manual Download Page 33

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If an erroneous situation is encountered during the calibration, an error message is displayed and 

the calibration can be restarted by pressing Restart. Prepare a new standard, rinse electrode, 

temperature probe and dosing tip and try again.

If the calibration doesn’t complete and the max titrant volume of titrant is reached, an error 

message will be displayed. The calibration can be restarted by pressing Restart. Prepare a new 

standard, rinse electrode, temperature probe and dosing tip and try again.

This error message appears when the pH reading exceeds the acceptable input limits (-2.00 < 

pH < 16.00).

This screen appears when the stirrer is not working properly. Check the stir bar and beaker 

content. Press Restart to try again.

This error message appears when the pump is not working properly. Check the tubing, valve and 

syringe. Press Restart to try again.

Summary of Contents for HI84502

Page 1: ...INSTRUCTION MANUAL HI84502 Titrable Total Acidity Mini Titrator pH Meter for Wine Analysis...

Page 2: ...nna Instruments product Please read this instruction manual carefully before using this instrument This manual will provide you with the necessary information for correct use of this instrument as wel...

Page 3: ...alibration Procedure 23 11 pH Buffer Temperature Dependence 27 12 Dosing Pump Installation 28 13 Dosing Pump Prime Procedure 29 14 Pump Calibration Procedure 31 15 Titration Procedure 34 15 1 Tips for...

Page 4: ...0635 Cleaning solution for wine deposits 20 mL sachet 2 pcs HI700636 Cleaning solution for wine stains 20 mL sachet 2 pcs 2000 L automatic pipette Plastic tip for automatic pipette 2 pcs 100 mL beaker...

Page 5: ...0 pH Resolution 0 1 pH 0 01 pH Accuracy 0 01 pH Calibration 1 2 or 3 calibration points 4 available buffers 4 01 7 01 8 20 10 01 Temperature compensation Manual or automatic mV Meter Range 2000 0 to 2...

Page 6: ...the titration data Data can be stored using the log feature and then exported to a USB stick or transferred to a PC using the USB connection Log on demand for up to 400 samples 200 for mV pH measureme...

Page 7: ...ents Too much acidity makes wine tart and sharp too little makes wines flat flabby and uninteresting Proper acidity in wine is what makes it refreshing and an ideal accompaniment to food The proper ac...

Page 8: ...ortant to know the sample volume titrant volume and concentration The dosing pump reproducibility is independent of the titrant tubing therefore it doesn t need frequent calibrations The calibration o...

Page 9: ...1 Dosing pump valve 2 Aspiration tube 3 Titrant bottle 4 Dispensing tube 5 Syringe 6 Temperature probe 7 pH electrode 8 Electrode holder 9 Beaker Top View 1 4 6 5 2 3 1 Titrant bottle 2 Dispensing tu...

Page 10: ...main screen In Setup menu exits a parameter without changing the value PressARROWkeystomodifytheparametervalues toscrolltheinformationdisplayedwhile viewing a help screen or to move between the option...

Page 11: ...nning blinks when stirrer is not working properly Pump running Unstable reading Parameter can be modified Dosing Pump The dosing pump is based on a valve that automatically moves the titrant between t...

Page 12: ...etails Connect the pH electrode to the instrument Connect the temperature sensor to the instrument Calibrate the pH electrode Connect the tubes and the valve See DOSING PUMP INSTALLATION section for t...

Page 13: ...xtual help Press ESC to return to the main screen Range Setup Use Low measurement range for 0 1 5 0 g L Use High measurement range for 4 0 25 0 g L To ensure a high accuracy it is recommended to recal...

Page 14: ...to change the option Temperature Unit C F or K Press the virtual option key to change the option Time Press the Modify key to change the time format Press Format to switch between 12 hour am pm and 2...

Page 15: ...new value or ESC to return to the setup Key Beep Select Enable to activate or Disable to deactivate the Key Beep function If enabled a short beep will be heard every time a key is pressed Error Beep...

Page 16: ...3 Use the ARROW keys or to increase decrease the backlight level Press Accept to confirm or ESC to return to the setup menu Language Supported languages English default and German Press the displayed...

Page 17: ...ibration date and time temperature factory calibration date and time method version Press ESC to return to the setup menu Restore Factory Settings Press Select to restore the factory settings Press Ye...

Page 18: ...screen when a titration is in progress Prime burette screen Prime burette screen when the dosing system is running This error message appears when the pump is not working properly Check the tubing val...

Page 19: ...imum amount of titrant is exceeded Check standard electrode and or dosing system and try again The calibration was outside the acceptable limits Prepare a new standard and try again This error message...

Page 20: ...the calibration or Clear to restore the default calibration The Wrong Buffer message is displayed when the pH value is outside of the acceptable range Clean the electrode by following the Cleaning Pr...

Page 21: ...ss Restart to start another titration or ESC to return to the main screen This error message appears when the input reading pH or temperature exceeds the input limits If the pH or temperature values a...

Page 22: ...nd they will disappear when rinsed with distilled deionized water During transport tiny bubbles of air may have formed inside the glass bulb The electrode cannot function properly under these conditio...

Page 23: ...pH calibration point is recommended or else use 8 20 pH Note The HI84502 will not accept other pH buffers for calibration Pour small quantities of selected buffer solutions into clean beakers For acc...

Page 24: ...ut performing the second calibration point Two Point Calibration The calibrated value will be shown on the display and the second expected buffer value will be displayed Remove the electrode holder wi...

Page 25: ...e display until the reading becomes stable When the reading is stable and close to the selected buffer the unstable measurement symbol will disappear and the Confirm key will become active Press Confi...

Page 26: ...urrent calibration point The instrument will keep all the confirmed values during the current calibration If the temperature reading is out of the defined temperature range of the buffer 0 to 45 C the...

Page 27: ...ally calibrate to the pH value corresponding to the measured or set temperature TEMP pH BUFFERS C F 4 01 7 01 8 20 10 01 0 32 4 01 7 13 8 38 10 32 5 41 4 00 7 10 8 34 10 24 10 50 4 00 7 07 8 31 10 18...

Page 28: ...on the top of the meter 4 Arrange the bottom of the syringe into the pump holder Once the syringe is in place lower the barrel until it sits flush on the holder 5 Put the o ring and syringe fixing nut...

Page 29: ...ns The prime cycle is used to fill the syringe before starting a set of titrations Two rinse cycles of the syringe are shown in the figure below The dispensing tube is connected to the top of the valv...

Page 30: ...ended to ensure that the air bubbles are completely removed To pause the prime process press the Pause key to continue press the Continue key To stop the prime process press the Stop key Note This err...

Page 31: ...or in 7 01 pH buffer Sample preparation Use a clean tip and the 2000 L automatic pipette to precisely add the appropriate amount of HI84502 55 Calibration Standard to a clean beaker as indicated below...

Page 32: ...deionized water can be added Insert the dosing tip into the titrant tube sleeve It is critical that the tip be immersed approximately 0 25 cm 0 1 into the solution being titrated Press Continue to be...

Page 33: ...nt is reached an error message will be displayed The calibration can be restarted by pressing Restart Prepare a new standard rinse electrode temperature probe and dosing tip and try again This error m...

Page 34: ...h Range 0 1 to 5 0 g L 4 0 to 25 0 g L Sample preparation Use a clean tip and the 2000 L automatic pipette to precisely add the appropriate amount of wine sample to a clean beaker as indicated below L...

Page 35: ...stir bar Insert the dosing tip into the titrant tube sleeve It is critical that the tip be immersed approximately 0 25 cm 0 1 into the solution being titrated Press Continue to begin the titration and...

Page 36: ...trument s memory Press Restart to begin a new titration or ESC to return to the titration menu If the concentration exceeds the range limits 5 0 g L for Low Range 25 0 g L for High Range the exceeded...

Page 37: ...h series of titrations Calibrate the pump if the meter is left idle for several hours Analyze the wine sample immediately after it is obtained Clean the electrode with HI700635 or HI700636 cleaning so...

Page 38: ...ROW keys when is displayed to scroll between the log records Press ESC to return to the previous screen Press Plot to visualize the titration curve or ESC to return to the previous screen On the titra...

Page 39: ...l be displayed 15 3 TITRATOR GLP INFORMATION Press MENU then GLP From this screen it is possible to select the Electrode or the Pump GLP Press Pump to view the pump s last calibration time date and sl...

Page 40: ...splayed perform an electrode calibration Press MENU to access the instrument s menu Press HELP to view the contextual help every time you need additional information Press STIR to start stop the stirr...

Page 41: ...ure probe into the sample as close as possible to the electrode and wait for a few seconds The ATC message will be shown on the display Automatic Temperature Compensation will provide pH corrected val...

Page 42: ...ress Info to see detailed information about the highlighted record Use ARROW keys when is displayed to scroll between the records Press ESC to return to the previous screen If Delete or Del All is pre...

Page 43: ...e calibration GLP contains a set of information regarding electrode calibration The following items are included in electrode GLP the time and date of the last calibration offset slope electrode condi...

Page 44: ...rther analysis on a PC The logged data can also be transferred from the instrument to the PC using a USB cable Connect the USB cable and the following screen will be displayed Press Meter to generate...

Page 45: ...aking down the electrode as you would do with a glass thermometer If the bulb and or junction is dry soak the electrode in HI70300 Storage solution for at least one hour If the fill solution electroly...

Page 46: ...Probe Maintenance Refill the reference chamber with fresh electrolyte HI7082 Allow the electrode to stand upright for 1 hour Follow the Storage Procedure above pH Cleaning Procedure Wine deposits Soa...

Page 47: ...ding out of range Check cable connection to meter and verify protective cap is off Check the quality of the sample Clean the electrodes Refill with fresh fill solution The meter does not accept the pH...

Page 48: ...stuck Check the keyboard or contact the vendor Error xx message is displayed Internal error Power off the meter and then power it on again If the error persists contact the vendor Stirrer error messag...

Page 49: ...ill solution 30 mL 4 pcs ELECTRODE STORAGE SOLUTION HI70300L Electrode storage solution 500 mL ELECTRODE CLEANING SOLUTION HI70635L Cleaning solution for wine deposits 500 mL HI70636L Cleaning solutio...

Page 50: ...t s safety do not use or store the instrument in hazardous environments WARRANTY HI84502 is warranted for two years against defects in workmanship and materials when used for its intended purpose and...

Page 51: ...Hanna Instruments reserves the right to modify the design construction or appearance of its products without advance notice...

Page 52: ...World Headquarters Hanna Instruments Inc Highland Industrial Park 584 Park East Drive Woonsocket RI 02895 USA www hannainst com MANMAN84502 Printed in ROMANIA...

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