User manual HANNA INSTRUMENTS HI 84181

[. . . ] Instruction Manual ISE Potassium Meter HI 84181 w w w. c o m 1 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. [. . . ] Press Accept to confirm the value or ESC to return to Setup menu without saving. Date/Time This option is used to set the instrument's date and time. Press Modify to access the date/time modify screen. Date/Time modify screen Press / to select the value to be modified (year, month, day, hour, minute or second) and then press / in order to increase/decrease the value. After pressing Delete the instrument will ask for confirmation. Press CFM to delete the record or ESC to return to the previous screen without deleting. Deleting a record will reorganise the list of records. Press Delete All to erase all the stored records. After pressing Delete All the instrument will ask for confirmation. Press CFM to delete all the records or ESC to return to the previous screen without deleting. If the log is empty the message "No Records!" will be displayed. 13 TIPS FOR AN ACCURATE MEASUREMENT The instructions listed bellow should be carefully followed during analysis to ensure best accuracy. · Rinse the electrode pair with distilled or deionized water between samples, and blot dry with a lab wipe or other soft disponible absorbent toweling. · Select the adequate stability criteria. · Analyse the wine sample at room temperature. MEASUREMENT PROCEDURE · Fill the beaker up to the 50 mL mark with sample. Use the 2000 µL automatic pipette to add 2 mL of HI 84181-0 ISA, place the stir bar into the beaker and then place the beaker in the appropriate place on the instrument top. · Place the electrode holder on the top of the beaker and secure it by turning clockwise. · Immerse HI 61014 potassium electrode, HI 5315 reference and the HI 7662-T temperature probe approximately 2 cm (0. 8") into the sample to be tested paying attention to not touch the stir bar, and press Start. · Wait until the reading is stable, CFM key displayed, if the "Reading confirm" option is selected, and then press CFM. If the "Reading confirm" option is disabled the instrument automatically memorizes the reading when this is stable and waits to add standard. Until the standard addition is detected the instrument will beep if beeper is enabled in Setup. 14 · Use the 2000 µL automatic pipette to add exactly 2 mL of HI 84181-1 Standard when the meter asks for it. If the instrument is not in auto confirm mode, press READ to start next measurement step. · Wait until the reading is stable, CFM key displayed, if the "Reading confirm" option is selected, and then press CFM. If the "Reading confirm" option is disabled the instrument automatically memorizes the reading when this is stable and waits to add standard. [. . . ] This warranty is limited to repair or replacement free of charge. Damage due to accident, misuse, tampering or lack of prescribed maintenance is not covered. If service is required, contact your dealer. If under warranty, report the model number, date of purchase, serial number and the nature of the failure. [. . . ]