Hanna-instruments HI 84502 Uživatelský manuál Strana 1

1Instruction ManualHI 84502TITRABLE TOTAL ACIDITYMINITITRATORfor wine analysiswww.hannainst.com

10DOSING PUMPThe dosing pump is based on a valve that automatically moves the titrant between the titrantbottle and syringe when filling the syringe a

11SETUP MENUThe titrator’s setup menu may be accessed from the main screen (meter or titrator) by pressingthe MENU key, then Setup.A list of setup par

12°C, °F or K.Press the virtual option key to change the option.Temperature UnitTimePress the Modify key to change the time and timeformat.Press Forma

13Error BeepLCD ContrastSelect Enable to activate or Disable to deactivatethe Error Beep function.If enabled, a beep will be heard when an errorcondit

14Press the corresponding virtual option key to changethe language.If the selected language cannot be loaded, thepreviously selected language will be

15This error message appears when the pump is notworking properly. Check the tubing, valve and syringe.Press Restart to try again.GUIDE TO DISPLAY COD

16This error message appears during pump calibrationwhen the end point can not be reached and themaximum amount of titrant is exceeded. Checkstandard,

17pH CALIBRATION MESSAGESpH calibration mode.When the reading has stabilized press Confirm toaccept the calibration or Clear to restore the defaultcal

18This screen appears when the stirrer is not workingproperly. Check the stir bar and beaker content.Press Restart to try again.This screen appears wh

19ELECTRODE CALIBRATION PROCEDUREIt is recommended to calibrate the instrument frequently, especially if high accuracy is required.The pH electrode sh

2Dear Customer,Thank you for choosing a Hanna Instruments product.Please read this instruction manual carefully before using this instrument. This man

20Point 1 calibration• The default buffer selected will be 7.01 if end point was set to 7.00 pH or else 8.20 pH willbe selected. If necessary, press t

21• The (unstable measurement) symbol will be shown on the display until the readingbecomes stable.• When the reading is stable and close to the sele

22• If the measured offset isn’t within the preset limits (±45 mV), the meter will display themessage “Buffer Contaminated” alternatively with ”Electr

23Note: • To clear a previous calibration and to return to the default value, press Clear at anytime after entering calibration mode. If Clear is invo

24DOSING PUMP INSTALLATIONTo install the dosing pump follow the procedure below:• Extend the plunger on the 5 mL syringe to its maximum volume.• Place

25Note: The aspiration tube must be inserted in the titrant bottle. The dosing tip must be placed overa rinse beaker.• To prime the burette, select Pr

26Note: Failure to use a clean pipette will result in erroneousreadings.• Fill the beaker up to the 50 mL mark with the distilled ordeionized water.•

27Note: • If temperature probe is not connected, Manual Temperature Compensation is usedand MTC appears on the right side of the screen. If Automatic

28TITRATION PROCEDURE• For best accuracy, before taking any measurement, ensure that the pump is calibrated on theselected range following the “Pump C

29• Insert the dosing tip into the titrant tube sleeve. IT IS CRITICALTHAT THE TIP BE IMMERSED APPROXIMATELY 0.25 CM (0.1")INTO THE SOLUTION BEIN

3PRELIMINARY EXAMINATIONPlease examine this product carefully. Make sure that the instrument is not damaged. If anydamage occurred during shipment, pl

30TIPS FOR AN ACCURATE MEASUREMENTThe instructions listed below should be followed carefully to ensure measurements are conductedwith the highest poss

31Press MENU then Recall to access the Titrator logs.When an external USB storage device is connected, the Export key is displayed. It saves themeter

32TITRATOR GLP INFORMATIONPress MENU then GLP.From this screen it is possible to select the Electrode or the Pump GLP.Press Plot to visualize the

33pH MEASUREMENTThe HI 84502 can be used as a pH meter for direct measurements.Verify that the instrument has been calibrated before taking pH measure

34In order to take pH measurements, follow the next steps:• Submerge the pH electrode 2 cm (0.8’’) and the temperature probe into the sample to betest

35VIEW/DELETE RECORDED pH DATATo view or delete previously logged pH records, press MENU then Recall to access the pH logs.When an external USB storag

36pH METER GLP INFORMATIONThe pH meter GLP screens displays the last pH calibration data.To view this information, press MENU key then GLP.Press Elect

37PC INTERFACE AND DATA TRANSFERData stored on the meter with the LOG function during pH/mV measurement and titrations canbe transferred from the mete

38TROUBLESHOOTING GUIDESMOTPMYS MELBORP NOITULOSevissecxe/esnopserwolS.tfird.edortceleHpytriDnipitedortceleehtkaoS1607IH noitulosgninaelcsetunim03rof

39SMOTPMYS MELBORP NOITULOSwoLninoitartitaretfAtnemurtsnieht,egnaRL/g0.5ro1.0syalpsid.gniknilb.detcelesegnargnorWfotuonoitartnecnoC.egnarhgiHotegnareg

4GENERAL DESCRIPTIONThe HI 84502 is a low-cost, easy to use, microprocessor-based automatic titrator that benefits fromHanna’s years of experience as

40ELECTRODE CONDITIONING AND MAINTENANCEPREPARATION PROCEDURERemove the protective cap of the pH electrode (HI 1048B).DO NOT BE ALARMED IF SALT DEPOSI

41STORAGE PROCEDURETo minimize clogging and assure a quick response time, the glass bulb and the junction of theelectrode should be kept moist and not

42ACCESSORIESREAGENTSHI 84502-50 Titrant Solution (230 mL)HI 84502-55 Calibration Standard (120 mL)pH CALIBRATION SOLUTIONSHI 7004M Buffer solution pH

43WARRANTYHanna Instruments reserves the right to modify the design, construction or appearance of its productswithout advance notice.Before using thi

44MAN84502 10/12Printed in EUROPEROMANIAHanna Instruments Inc.Highland Industrial Park584 Park East DriveWoonsocket, RI 02895 USATechnical Support fo

5SIGNIFICANCE OF USEAcids occur naturally during the growing of grapes and as part of the fermentation process. Winesshow lower levels of acid when th

6SPECIFICATIONSTitrator Range Low Range: 0.1 to 5.0 g/L of tartaric acidHigh Range: 4.0 to 25.0 g/L of tartaric acidResolution 0.1 g/LAccuracy 3 % of

7PRINCIPLE OF OPERATIONThe determination of total acids in wine is made according to a neutralization reaction, that is thereaction between the acids

8FRONT VIEWREAR VIEW6) Temperature probe7) pH Electrode8) Beaker9) Dosing pump10) Power switch11) Power adapter12) USB connector (PC interface)13) USB

9ESC - used to leave the current screen and to return either to the previous screen or to themain screen. In Setup menu, exits a parameter without cha