Hanna-instruments HI 84442 Manual de usuario Pagina 1

1Instruction ManualHI 84442TOTAL ALKALINITY FOR VERYLOW RANGEMINITITRATOR & pH METERfor Water Analysiswww.hannainst.com

10PERISTALTIC PUMPPeristaltic pumps are self priming. Liquid never contacts the pump components. The titrant tubingis pressed along the rotating rolle

11Use 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

12Options: °C, °F.Press the function key in order to change thetemperature unit.Temperature unitOptions: 0 to 8.Press Modify to access the backlight

13Use the ARROW keys to select the desired format.Press Accept to confirm the value or ESC to returnto the setup menu.Date formatPress Modify to chang

14Press Select to view the firmware version, languageversion, mV factory calibration date and time andtemperature factory calibration date and time.Pr

15ELECTRODE PREPARATIONPREPARATION PROCEDURERemove the electrode protective cap.DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT. This is normal wit

16ELECTRODE CALIBRATION PROCEDUREIt is recommended to calibrate the instrument frequently, especially if high accuracy is required.The pH electrode sh

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

18• The calibrated value will be shown on the display and the third expected buffer value will beautomatically selected.• After the second calibration

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

2All rights are reserved. Reproduction in whole or in part is prohibited without the written consentof the copyright owner, Hanna Instruments Inc., Wo

20The temperature has an effect on pH. The calibration buffer solutions are affected by temperaturechanges to a lesser degree than normal solutions. D

21PURGEPurging should be performed:• whenever the tube of the peristaltic pump is replaced;• whenever the titrant is changed or a new bottle is used;•

22Press CAL to access the titration calibration menu where electrode and pump calibration maybe accessed.Press HELP to view the contextual help.• Pres

23Verify: The electrode has been calibrated in 4.01 pH buffer.• Sample preparation: Add 1 mL of HI 84442-55 PumpCalibration Solution to a clean beaker

24The instrument displays the date and time of the last electrode calibration, and the date andtime of the last pump calibration, or calibration expir

25• If the calibration doesn’t complete within 6 minutes the error message “Too muchstandard” will be displayed and the calibration can be restarted b

26• Insert the dosing tip in the appropriate holder place.• From the titrator main screen press Titration. To enter titrator main screen from pH meter

27• Remove electrode holder. Rinse the electrode into waste container.• Prepare a fresh sample and place on titrator. Place the temperature probe and

28Press Delete to enter delete record screen.Press Delete All to enter delete all records screen.Press More to view additional information of the meas

29GLP contains a set of information regarding electrode calibration. The following items areincluded in electrode GLP: the time and date of the last c

3Please examine this product carefully. Make sure that the instrument is not damaged. If anydamage occurred during shipment, please notify your Dealer

30If 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

31Press 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

32Press MENU key while in pH meter screen.Press Recall to access the pH recall.A list of records is stored in the pH log.Use the ARROW keys to scroll

33pH METER GLP INFORMATIONThe pH meter GLP information references the last pH calibration data.To view this information press MENU key while in pH me

34TEMPERATURE CALIBRATION PROCEDURE (for technical personnel only)All the instruments are factory calibrated for temperature.HANNA’s temperature probe

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

36TROUBLESHOOTING GUIDESMOTPMYSSMOTPMYSSMOTPMYSSMOTPMYSSMOTPMYSMELBORPMELBORPMELBORPMELBORPMELBORPNOITULOSNOITULOSNOITULOSNOITULOSNOITULOSevissecxe/es

37ELECTRODE CONDITIONING AND MAINTENANCEpH CLEANING PROCEDURE• GeneralSoak in Hanna HI 7061 or HI 8061 General Cleaning Solution forapproximately ½ ho

38REAGENTSHI 84442-50 Titrant solution for low range (100mL)HI 84442-55 Pump calibration solution (100mL)HI 84442-70 Reagents kit for low and high ran

39HI 84442 is warranteed for two years against defects in workmanship and materials when used for itsintended purpose and maintained according to the

4the instrument accuracy is assured.The instrument employs a powerful and effective built-in algorithm to analyze the pH response todetermine the exac

40MAN8444201/09SALES AND TECHNICAL SERVICE CONTACTSSALES AND TECHNICAL SERVICE CONTACTSSALES AND TECHNICAL SERVICE CONTACTSSALES AND TECHNICAL SERVICE

5Potentiometric end point detection using a pH electrode is more objective than using visual endpoint determinations with color changing indicators. T

6SPECIFICATIONSTitrator Range Titratable alkalinity:mg/L : 3.00 - 10.00 mg/L as CaCO3meq/L : 0.06 - 0.20 meq/L as CaCO3Resolution Titratable alkalinit

7PRINCIPLE OF OPERATIONWater alkalinity determination is performed by titration with acid reagent to pH end point.Alkalinity is expressed as:• Total a

8FUNCTIONAL AND PHYSICAL DESCRIPTIONOVERHEAD VIEW1. Titrant bottle2. Graphic LCD3. Keypad4. Dedicated guide tubefor Temperature Probe5. Electrode hold

9ESC - used to leave the current screen and to return either to the previous screen or to themain screen. When pressed while modifying a parameter wit