Instruction Manual HI 84430 TOTAL ACIDITY MINITITRATOR & pH METER for Water Analysis w w w. h a n n a i n s t .
Dear Customer, Thank you for choosing a Hanna product. This manual will provide 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 us at tech@hannainst.com. This instrument is in compliance with directives. TABLE OF CONTENTS PRELIMINARY EXAMINATION.................................................................................................
PRELIMINARY EXAMINATION Please examine this product carefully. Make sure that the instrument is not damaged. If any damage occurred during shipment, please notify your Dealer.
SPECIFICATIONS Titrator Range Titratable acidity (low range) mg/L : 15.0 - 500.0 mg/L as CaCO3 meq/L : 0.3 - 10.0 meq/L as CaCO3 Titratable acidity (high range) mg/L : 400 - 4000 mg/L as CaCO3 meq/L : 8 - 80 meq/L as CaCO3 Titratable acidity (low range): 0.1 mg/L 0.1 meq/L Titratable acidity (high range): 1mg/L 1meq/L Accuracy 5% of reading Titration method Acid-base titration (total acidity / strong acidity) Principle End point titration : 8.3 pH / 3.7 pH Pump debit 0.
PRINCIPLE OF OPERATION FUNCTIONAL AND PHYSICAL DESCRIPTION Water acidity determination is based on the neutralization of all acidic species contained in water samples by titration with base solutions (the titrant alkaline reagent): H++OH- H2O In an ideal solution, the end point of an acid titration corresponds stoichiometrically to the complete neutralization of the acids present. Water acidity results from strong and weak acids, and from the hydrolysis of salts.
5. Functional key area 6. Indicates that the displayed value can be changed using ARROW keys 7. Temperature value (°C, °F) 8. pH temperature compensation mode (Manual or Automatic) 9. Stirrer and reading status area KEYPAD FUNCTION AND INDICATORS PERISTALTIC PUMP Peristaltic pumps are self priming. Liquid never contacts the pump components. The titrant tubing is pressed along the rotating rollers of the pump. The rollers compress the tubing, driving the titrant to the dispensing tip.
SETUP CONFIGURATION MENU Calibration timeout Options: Disabled or 1 to 7 days. This option is used to set the number of days before the pH calibration expired warning message is flagged. Press Modify to access the calibration timeout value modify parameter. The titrator’s setup configuration menu may be accessed from the pH or titration screens by pressing the MENU key, then Setup. A list of setup parameters will be displayed with currently configured setting.
Use the ARROW keys or / in order to increase/decrease the displayed constrast. Press Accept to confirm or ESC to return to the setup menu. Contrast Time format Option: AM/PM or 24 hours. Press the functional key to select the new value. Date format Option: 0 to 20. This option is used to set the display’s contrast. Press Modify to change the display’s contrast. Press Modify to change the Date Format. Use the ARROW keys or / in order to increase/decrease the value.
Beep On Meter information Press the function key to select the new option. When enabled, a short beep is heard every time a key is pressed or when the calibration can be confirmed. A long beep alert sounds when the pressed key is not active or a wrong condition is detected while in calibration. Press Select to view the firmware version, language version, mV factory calibration date and time and temperature factory calibration date and time. Press ESC to return to the Setup mode.
ELECTRODE PREPARATION ELECTRODE CALIBRATION PROCEDURE PREPARATION PROCEDURE It is recommended to calibrate the instrument frequently, especially if high accuracy is required. The pH electrode should be recalibrated: a) Whenever the pH electrode is replaced b) At least once a week c) After testing aggressive chemicals and after electrode is cleaned d) When high accuracy is required e) If the pH calibration expired warning is displayed during measurement.
• When the reading is stable and close to the selected buffer, the symbol will disappear and the Confirm key will become active. (unstable measurement) • The calibrated value will be shown on the display and the third expected buffer value will be automatically selected. • After the second calibration point has been confirmed, press ESC to exit without performing the third calibration point. Point 3 calibration • Remove the electrode holder with electrodes from the top of the beaker.
• If the measured offset isn’t within the preset limits the meter will display the message “Buffer Contaminated” alternatively with ”Electrode Dirty/Broken”. pH BUFFER TEMPERATURE DEPENDENCE The temperature has an effect on pH. The calibration buffer solutions are affected by temperature changes to a lesser degree than normal solutions. During calibration the instrument will automatically calibrate to the pH value corresponding to the measured or set temperature.
PUMP TUBE INSTALLATION To mount the new peristaltic pump tube set follow next steps: • Position one peristaltic pump fixing ring on its location. • Stretch the tube over the peristaltic pump rolls. • Attach the second pump fixing ring on its location. • Attach the tube to the reagent bottle. Choose which titrant is required for expected range. See table in Acidity Type section.
After the 5 minutes purging interval has elapsed the “Completed” message is displayed. Another purge period can be initiated by pressing Restart or press Esc to return to main titrator screen. Note: The chemical reagents may be hazardous if improperly handled. Read Health and Safety Data Sheets before performing the test. • From the titrator main screen press CAL. PUMP CALIBRATION PROCEDURE Please set up the instrument before performing the pump calibration.
• After the pump calibration is complete a confirmation message is displayed for a few seconds, then the instrument will return to the titrator calibration menu and will display the new time and date for the last pump calibration. Notes: • The calibration of the pump is dependent on acidity range selected during SETUP. • If an erroneous situation is encountered during the calibration, an error message is displayed and the calibration can be restarted by pressing Restart.
• From the titrator main screen press Titration. To enter titrator main screen from pH meter mode press Titrator and then Titration. If the tutorial is enabled this screen will be shown. • Press Start to begin the titration process. • After the titration is started two animations will be shown on the upper right side of the display to indicate that the pump and the stirrer are running. On the lower right side of the display is shown the period of time since the titration has been started.
Press Delete to enter record deleting mode. Press Delete All to enter all records deleting mode. Press More to view more information. Press Unit to convert the result to other 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 keys to focus on the record to be deleted. Press Confirm to delete the record or ESC to return to the previous screen.
The pump GLP displays the Time and Date of the last pump calibration. If a calibration hasn’t been performed the message “Not Calibrated” will be displayed. pH MEASUREMENT The HI 84430 may be used as a pH meter for direct measurements. Verify that the instrument has been calibrated before taking pH measurements. Set the instrument to pH meter. At power up the instrument enters pH meter mode. From titrator mode press ESC until pH units are displayed.
If Delete All was pressed the instrument will ask for confirmation. VIEW/DELETE RECORDED pH DATA To view or delete previously logged pH records press MENU key while in pH meter screen. Press Confirm to delete all records or ESC to return to the previous screen without deleting. If the pH log is empty the message “No Records!” will be displayed. Press Recall to access the pH recall. A list of records is stored in the pH log. Use the ARROW keys to scroll the list of records.
TEMPERATURE CALIBRATION PROCEDURE (for technical personnel only) All the instruments are factory calibrated for temperature. HANNA’s temperature probes are interchangeable and no temperature calibration is needed when they are replaced. If the temperature measurements are inaccurate, temperature recalibration should be performed. For an accurate recalibration, contact your dealer or the nearest HANNA Customer Service Center, or follow the instructions below.
PC INTERFACE Data transmission from the instrument to the PC can be done with the HI 92000 Windows compatible software (optional). HI 92000 also offers graphing and on-line help features. Data can be exported to the most popular spreadsheet programs for further analysis. To connect your instrument to a PC use a standard USB connector. Make sure that your instrument is switched off and plug one connector to the instrument’s USB socket and the other to the USB port of your PC.
PAR Requests the setup parameters setting.
TROUBLESHOOTING GUIDE SYMPTO MS SYMPTO MS PRO BLEM SO LU TI O N Soa k th e electrod e tip in HI 7061 clea n in g solu tion for 30 m in u tes. Refill with fill solu tion . PRO BLEM After a titra tion in High Range th e in stru m en t d isp la ys 4000 m g /L or 800 m eq (with th e selected u n it) b lin kin g . Broken electrod es. In stru m en t n ot ca lib ra ted . Wron g sa m p le. Con cen tra tion ou t of ra n g e. Ch eck/clea n th e electrod es.
ACCESSORIES REAGENTS HI 84430-50 HI 84430-51 HI 84430-55M HI 84430-58 HI 84430-70 HI 84430-71 HI 84430-72 WARRANTY Titrant solution for low range (100mL) Titrant solution for high range (100mL) Pump calibration solution (230mL) Additional reagent (30mL) Reagents kit for low and high range (about 150 titrations) Reagents kit for low range (about 150 titrations) Reagents kit for high range (about 150 titrations) pH CALIBRATION SOLUTIONS HI 7001M Buffer solution pH 1.
SALES AND TECHNICAL SERVICE CONTACTS Australia: Tel. (03) 9769.0666 • Fax (03) 9769.0699 China: Tel. (10) 88570068 • Fax (10) 88570060 Egypt: Tel. & Fax (02) 2758.683 Germany: Tel. (07851) 9129-0 • Fax (07851) 9129-99 Greece: Tel. (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) 5638.9829 Singapore: Tel. 6296.
