Hanna-instruments HI 84431 Manual do Utilizador

1Instruction ManualHI 84431TOTAL ALKALINITYMINITITRATOR & pH METERfor Water Analysiswww.hannainst.com

10ESC - used to leave the current screen and to return either to the previous screen or to themain screen. When pressed while modifying a parameter wi

11PERISTALTIC PUMPPeristaltic pumps are self priming. Liquid never contacts the pump components. The titrant tubingis pressed along the rotating rolle

12TITRATOR STARTUPThis is a general outline of the steps required to make a titration. The following sections expandupon each section.• Place the inst

13From your knowledge of expected concentrations, use the table below to determine whichsettings and solutions are appropriate:Use Total LR or Strong

14Use the ARROW keys in order to increase/decreasethe value.Press Accept to confirm or ESC to return to thesetup menu without saving the new value.pH

15Press / to highlight the value to be modified(year, month, day, hour, minute or second). Usethe ARROW keys to change the value.Press Accept to

16Press the corresponding function key to change thelanguage.If the new selected language cannot be loaded,the previously selected language will be re

17Press Select to view the firmware version, languageversion, mV factory calibration date and time andtemperature factory calibration date and time.Pr

18ELECTRODE PREPARATIONPREPARATION PROCEDURERemove the electrode protective cap.DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT. This is normal wit

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 product. This manual will provide you with the necessaryinformation for the correct use of the instrumen

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

21• After the second calibration point has been confirmed, press ESC to exit without performingthe third calibration point.Point 3 calibration• Remove

22• If the measured offset isn’t within the preset limits the meter will display the message“Buffer Contaminated” alternatively with ”Electrode Dirty/

23The temperature has an effect on pH. The calibration buffer solutions are affected by temperaturechanges to a lesser degree than normal solutions. D

24PURGEPurging should be performed:• whenever the tube of the peristaltic pump is replaced;• whenever the titrant is changed or a new bottle is used;•

25- a pump calibration hasn’t been performed or more than 3 days have passed since the lastpump calibration.• Press CAL to access the titration calibr

26Verify: The electrode has been calibrated in 8.30 pH buffer.• Sample prepar.ation: Add a precisely measured amount ofHI 84431-55 Pump Calibration S

27• Press Pump.The next screen will be displayed.• Press Start.• After the pump calibration is started, on the upper right side of the display two ani

28• After the pump calibration is complete a confirmation message is displayed for a few seconds,then the instrument will return to the titrator calib

29Verify: The instrument has been calibrated (pH and pump) before performing a lot oftitrations. An electrode calibration in at least one point (8.30

3All rights are reserved. Reproduction in whole or in part is prohibited without the written consentof the copyright owner, Hanna Instruments Inc., Wo

30• After the titration is started on the upper right side of the display two animations will beshown in order to indicate that the pump and the stirr

31VIEW/DELETE LOGGED SAMPLESPress MENU key while in Titrator main screen.Press Recall to access the titrator logged data.The instrument will display

32Press Delete to enter delete record screen.Press Delete All to enter delete all records screen.Press More to view additional information of the mea

33GLP contains a set of information regarding electrode calibration. The following items areincluded in electrode GLP: the time and date of the last c

34If a calibration hasn’t been performed the message “Not Calibrated” will be displayed.The pump GLP displays the Time and Date of the last pump calib

35Press LOG to memorize the current reading. A message indicating the free log space will bedisplayed for a few seconds.In order to take pH measureme

36Press Confirm to delete the record or ESC to return to the previous screen without deleting.Deleting a record will renumber the list of records.VIEW

37If the pH log is empty the message “No Records!” will be displayed.pH METER GLP INFORMATIONThe following items are included in electrode GLP: the ti

38TEMPERATURE CALIBRATION PROCEDURE (for technical personnel only)All the instruments are factory calibrated for temperature.HANNA’s temperature probe

39• Immerse the temperature probe in the second vessel as near as possible to the referencethermometer. Allow a few seconds for the probe to stabilize

4Please examine this product carefully. Make sure that the instrument is not damaged. If anydamage occurred during shipment, please notify your Dealer

40SMOTPMYSSMOTPMYSSMOTPMYSSMOTPMYSSMOTPMYSMELBORPMELBORPMELBORPMELBORPMELBORPNOITULOSNOITULOSNOITULOSNOITULOSNOITULOSevissecxe/esnopserwolS.tfird.edor

41ELECTRODE CONDITIONING AND MAINTENANCEpH CLEANING PROCEDURE• GeneralSoak in Hanna HI 7061 or HI 8061 General Cleaning Solution forapproximately ½ ho

42REAGENTSHI 84431-50 Titrant solution for low range (100mL)HI 84431-51 Titrant solution for high range (100mL)HI 84431-55 Pump calibration solution (

43HI 84431 is warranteed for two years against defects in workmanship and materials when used for itsintended purpose and maintained according to the

44Printed in Romania, EU MAN84431 08/09Hanna Instruments Inc.Highland Industrial Park584 Park East DriveWoonsocket, RI 02895 USALocal Sales and Custo

5By simply pressing START key, the HI 84431 automatically starts pump operation and titrates thesample to the end point. The HI 84431 has a simple and

6The results of a titration provide a means to classify the principle forms of alkalinity.Relationship of titrant volumes for alkalinity calculations:

7SPECIFICATIONSTitrator Range Titratable alkalinity (low range)mg/L : 15.0 - 500.0 mg/L as CaCO3meq/L : 0.3 - 10.0 meq/L as CaCO3Titratable alkalinit

8PRINCIPLE OF OPERATIONWater alkalinity determination is performed by titration with acid reagent to pH end point.Alkalinity is expressed as:• Strong

9FUNCTIONAL AND PHYSICAL DESCRIPTIONOVERHEAD VIEWOVERHEAD VIEWOVERHEAD VIEWOVERHEAD VIEWOVERHEAD VIEW1. Titrant bottle2. Graphic LCD3. Keypad4. Dedica