Hanna Instruments HI 84429 Скачать руководство пользователя страница 28 | Manualshive

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• 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 independent of the selected range and concentration unit.
• If an erroneous situation is encountered during the calibration, an error message is

displayed and the calibration can be restarted by pressing

Restart

.

• If the calibration doesn’t complete within 6 minutes the error message

“Too much

standard”

will be displayed and the calibration can be restarted by pressing

Restart

after a new sample is prepared.

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Содержание HI 84429

Страница 1: ...truction Manual HI 84429 TITRATABLE ACIDITY MINITITRATOR pH METER for Dairy Products 99 Washington Street Melrose MA 02176 Phone 781 665 1400 Toll Free 1 800 517 8431 Visit us at www TestEquipmentDepo...

Страница 2: ...ore using the meter TABLE OF CONTENTS PRELIMINARY EXAMINATION 3 GENERAL DESCRIPTION 4 SPECIFICATIONS 6 PRINCIPLE OF OPERATION 8 FUNCTIONAL DESCRIPTION 9 TITRATOR STARTUP 12 SETUP CONFIGURATION MENU 13...

Страница 3: ...0 Titrant 100 mL HI 84429 55 Standard 500 mL HI 700640 Cleaning solution for milk deposits 2x20mL pH 4 01 buffer solution 230 mL pH 6 00 buffer solution 230 mL pH 8 30 buffer solution 230 mL Two 50 mL...

Страница 4: ...ent employs a powerful and effective built in algorithm to analyze the pH response to determine the exact pH endpoint then uses this to make the necessary calculations The Titratable Acidity Determina...

Страница 5: ...be expressed in various units values Soxhlet Henkel degrees SH mostly used in Central Europe This value is obtained by titrating 100 mL of milk with 0 25N NaOH using phenolphtalein as indicator Thorn...

Страница 6: ...atable acidity high range 0 5 SH 1 Th 1 D 0 1 I a Accuracy 5 of reading Titration method Acid base titration Principle End point titration 8 30 pH Pump debit 0 5 ml min Stirring speed 800 rpm Log data...

Страница 7: ...ntity Test HI 84429 50 Titrant 0 5 mL HI 84429 55 Standard 50 mL Electrode FC 260B pH electrode included HI 5315 reference electrode included Temperature Probe HI 7662 M included Environment 0 to 50 C...

Страница 8: ...ally the endpoint determination can be subjective when a visual indicator phenolphthalein is utilized in an opaque or colored sample Calculations are then required The entire procedure can be quite ti...

Страница 9: ...ctor 14 Power switch 7 Temperature probe 11 Reference electrode socket 15 Peristaltic pump 8 Reference electrode 12 BNC electrode connector 9 Beaker 13 Temperature probe socket FRONT PANEL 1 Titrant b...

Страница 10: ...parameter s value to scroll the information displayed while viewing a help or to move between the options from the instrument s SETUP HELP used to access leave the instrument s contextual help MENU us...

Страница 11: ...6 Indicates that the displayed value can be changed using ARROW keys 7 Temperature reading display 8 pH temperature compensation mode manual or Automatic 9 Stirrer and reading status area GUIDE TO INC...

Страница 12: ...ction for details Prepare the electrodes and attach pH sensor and reference electrode to the instrument Calibrate the pH electrode At least a single point calibration in 8 30 pH buffer is necessary fo...

Страница 13: ...setup parameters will be displayed with currently configured setting While in the setup menu it is possible to modify the instrument s operation parameters The ARROW keys permit the user to scroll the...

Страница 14: ...key in order to change the option Option C or F Press the function key in order to change the option Temperature unit Option 0 to 8 Press Modify to access the backlight value Backlight Calibration tim...

Страница 15: ...nd time Press Modify to change the date time Date Time Contrast Option 0 to 20 This option is used to set the display s contrast Press Modify to change the display s contrast Use the ARROW keys or in...

Страница 16: ...utorial and help information are not available Language Use the ARROW keys to select the desired format Press Accept to confirm the value or ESC to return to the setup menu Date format Press Modify to...

Страница 17: ...and time Press ESC to return to the Setup mode 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...

Страница 18: ...e fill hole cover and o ring or fill hole spout Using the dropper pipette provided add a few drops of HI 7072 filling solution to the reference electrode wetting the o ring and rinsing out the fill so...

Страница 19: ...will not accept other pH buffers for calibration Pour small quantities of selected buffer solutions into clean beakers For accurate calibration use two beakers for each buffer solution the first one...

Страница 20: ...active Press CFM to confirm the calibration The calibrated value will be shown on the display and the second expected buffer value will be displayed After the first calibration point has been confirm...

Страница 21: ...n 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 STIR to stop stirring...

Страница 22: ...n the current and the previous old calibration Clear the calibration parameters by pressing Clear and proceed with calibration from the current calibration point The instrument will keep all the confi...

Страница 23: ...4 8 5 1 4 0 0 4 9 0 6 4 4 8 0 1 0 5 0 0 4 6 0 6 1 4 8 5 1 9 5 0 0 4 4 0 6 7 3 8 0 2 8 6 0 0 4 2 0 6 3 3 8 5 2 7 7 1 0 4 0 0 6 0 3 8 0 3 6 8 2 0 4 9 9 5 7 2 8 5 3 5 9 3 0 4 8 9 5 4 2 8 0 4 4 0 1 4 0 4...

Страница 24: ...ing tip Grasp one fixing ring of the peristaltic pump tube Pull the tube until the fixing rings are taken out from their location Remove the other side of the tube PURGE Purging should be performed wh...

Страница 25: ...r Stop During a purge the remaining time until the purge process will be completed is shown on the lower right side of the display Press Pause to interrupt the purge process on the lower right side of...

Страница 26: ...Verify The electrode has been calibrated in 8 30 pH buffer Sample preparation Fill a beaker up to the 50 mL mark with HI 84429 55 Standard Place the stir bar into the beaker and then place the beaker...

Страница 27: ...to indicate that the pump and the stirrer are working On the lower right side of the display is shown the amount of time that has passed since the begining of the calibration From the titrator main s...

Страница 28: ...The calibration of the pump is independent of the selected range and concentration unit If an erroneous situation is encountered during the calibration an error message is displayed and the calibrati...

Страница 29: ...ith deionized water Place the stir bar into the beaker and then place the beaker in the appropiate place on the instrument top Place the electrode holder on the top of the beaker and secure it by turn...

Страница 30: ...the lower right side of the display is shown the period of time since the titration has been started After the titration is complete the concentration value is displayed in the selected unit Press Un...

Страница 31: ...ayed The titration can be restarted after a new sample is prepared by pressing Restart TIPS FOR AN ACCURATE MEASUREMENT Calibrate the instrument in 8 30 pH buffer solution at least once a day before y...

Страница 32: ...Press CFM to delete the record or ESC to return to the previous screen Deleting a record will reorganise the list of records If Delete All was pressed the instrument will ask for confirmation Press CF...

Страница 33: ...a calibration hasn t been performed the message Not Calibrated will be displayed If the titrator log is empty the message No Records will be displayed TITRATOR GLP INFORMATION Press MENU while in Tit...

Страница 34: ...isplayed If an electrode calibration hasn t been performed or the number of days since the last pH calibration is greater than the number of days after wich a calibration time out warning is displayed...

Страница 35: ...ifferent samples it is recommended to rinse the electrodes thoroughly with deionized water or tap water and then with some of the next sample to prevent cross contamination The pH reading is affected...

Страница 36: ...rds is stored in the pH log Use the ARROW keys to scroll the list of records If More is pressed a complete set of data is displayed Use ARROW keys when is displayed to scroll between the records Press...

Страница 37: ...deo inverse mode are from the previous calibration If a calibration hasn t been performed the message Not Calibrated will be displayed The pH meter GLP information refers to the pH calibration date To...

Страница 38: ...ce To enter user calibration screen press and hold down the ARROW keys simultaneously then power on the instrument After a few seconds the User calibration screen is displayed Press Temp function key...

Страница 39: ...e and close to the selected calibration point the unstable measurement symbol will disappear and the CFM key will become active Press CFM to confirm the calibration point The instrument will return to...

Страница 40: ...t r o d n e v e h t n o i t a r b i l a c p m u p e h T d e m r o f r e p e b t n a c d r a d n a t s g n o r W s e d o r t c e l e n e k o r B r o d r a d n a t s e h t k c e h C s e d o r t c e l e...

Страница 41: ...ITIONING AND MAINTENANCE pH CLEANING PROCEDURE General Soak in Hanna HI 7061 or HI 8061 General Cleaning Solution for approximately hour Milk deposits Soak in Hanna HI 700640 Cleaning Solution for mil...

Страница 42: ...lution REAGENTS HI 84429 50 Titrant solution 100 ml HI 84429 55 Pump Calibration Standard 500 mL pH CALIBRATION SOLUTIONS HI 84429 65 pH 4 01 Buffer Solution 6 pcs 230 mL HI 84429 70 pH 6 00 Buffer So...

Страница 43: ...ly packaged for complete protection To validate your warranty fill out and return the enclosed warranty card within 14 days from the date of purchase WARRANTY Hanna Instruments reserves the right to m...

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