Instruction Manual HI 84181 ISE Potassium Meter 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. directives. This instrument is in compliance with TABLE OF CONTENTS PRELIMINARY EXAMINATION.................................................................................................
PRELIMINARY EXAMINATION Please examine this product carefully. Make sure that the instrument is not damaged. If any damage occured during shipment, please notify your Dealer.
SIGNIFICANCE OF USE Potassium ion (K+) is absorbed in vine from earth. Unlike other essential nutrients potassium remains in ionic form and passes to the grapes. Potassium ion is by far the most important ion that can be found in wine with concentrations between 0.7-2 g/L (ppt) and is mostly deriving from grapes. Potassium ion is greatly influencing the taste of wine, the absence of potassium ion giving a sour taste of wine.
SPECIFICATIONS 0.0 to 5.0 g/L (ppt) K+ 0.1 g/L (ppt) K+ ±5% of reading (see note) 50 mL Automatic from 0 to 80 °C HI 61014 Potassium half cell HI 5315 Reference half cell Temperature Probe HI 7662-T (included) LOG feature 50 samples Stirring speed 500 rpm Environment 0 to 50 °C (32 to 122 °F); max 95% RH non-condensing Power supply 220V/50Hz; 10VA Dimensions 208 x 214 x 163 mm (8.2 x 8.4 x 6.4") (with beaker) Weight 2200 g (77.6 oz.) Note: Above 2.
FUNCTIONAL DESCRIPTION INSTRUMENT DESCRIPTION FRONT PANEL 1) 2) 3) 4) Graphic LCD Functional keys Keypad Electrode holder REAR PANEL 5) 6) 7) 8) 9) Potassium half cell Reference half cell Temperature probe Electrode holder Reference socket 10) 11) 12) 13) 14) 6 Temperature probe socket BNC electrode connector Power switch Fuse Power cable connector
KEYPAD DESCRIPTION 1) ESC - to leave the current screen and to return either to the previous screen or to the main screen. In the setup parameter modifying mode by pressing ESC the value is not modified. 2) - to modify a parameter value, to scroll the information from the instrument’s setup 3) HELP - to access/leave the instrument’s contextual help 4) - to modify a parameter value, to scroll the information from the instrument’s setup 5) Functional Keys START UP • Place the instrument on a flat table.
GUIDE TO DISPLAY CODES During the instrument’s operation a series of informations are displayed on the LCD. 1) current time information area 2) instrument status area 3) functional keys area 4) stability criteria 5) stirrer and reading status area Icons from the stirrer and reading status area When the input reading is unstable. When the stirrer is on. Temperature warning (only if the “Temperature compensation” is disabled).
Pause screen Press Resume to continue the measurement process. Press Stir to start/stop the stirrer. Sample reading confirm screen (only if this feature is enabled in setup) Press CFM to memorize the reading. Wrong input error screen This screen is displayed if the current reading is out of ±2000mV range.
Setup screens While in the Setup menu it is possible to modify the instrument’s parameters. By pressing the / keys it is possible to move between the Setup options. Each menu item displays the current option. Press HELP to view the contextual help. Stability criteria Options: Accurate, Medium, Fast. Press the corresponding functional key to select the desired option. Select Accurate for accurate measurements; long duration. Select Medium for normal measurements.
Backlight Options: On-Off, 1 to 8 levels. Press Modify to access the backlight modify screen. Press / or / in order to increase/decrease the display’s backlight intensity. Press Accept to confirm the value or ESC to return to the Setup menu without saving. Contrast Options: 0 to 20. Press Modify to access the contrast value modify screen. Press / or / in order to increase/decrease the display’s contrast. Press Accept to confirm the value or ESC to return to Setup menu without saving.
Press / or in order to select the desired date format. Press Accept to confirm the desired date format or ESC to return to the Setup menu without saving. Language Options: Up to four languages This option is used to change the instrument’s display language. Press the corresponding functional key in order to select the new option. If the new selected language cannot be loaded, the previously selected language will be kept. The HELP information is not available if no language file can be loaded.
Recall screens Displays the list of all the memorised results. This list includes the record’s number, the concentration value, the concentration unit and the date. Press / to toggle between the stored records. Press More to view a complete set of data corresponding to the selected record. To return to the previous screen press ESC. Press / to toggle between complete record information screens. Press Delete to erase the currently selected record from the instrument’s memory.
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 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.
FUSE REPLACEMENT To change the fuse follow next steps: • Disconnect the power cord from the rear panel of the instrument. • Pull out the fuse holder located near the power cord connector. • Replace the fuse with a similar one. • Push the fuse holder with the fuse in the appropriate place. ELECTRODE CONDITIONING & MAINTENANCE PREPARATION PROCEDURE Preparation of potassium electrode: • Remove the protective cap from the HI 61014 potassium sensor’s tip. • Screw the potassium cell into the electrode body.
Preparation of reference electrode: • Unwrap ParafilmTM seal found over ceramic junction on inner stern of the reference electrod and discard. This is only used for shipping. • Rinse inner stern with deionized water making certain to wet o-ring found on the inner stern. • Reassemble reference electrode by gently pushing the inner assembly into the outer body, sliding spring down cable, and screwing cap into place. • Remove fill hole cover and o-ring or fill hole spout.
• Add 1 mL of HI 84181-1 Standard. Record the mV value when stable. • Add an additional 10 mL of HI 84181-1 Standard to the solution. Wait for the reading to stabilize and record the mV value. • The difference between the two recorded mV values give the slope of the electrode. An acceptable value for this slope is 53 ± 4 mV. • Press ESC to leave the reading check mode. PERIODIC MAINTENANCE Inspect the electrode and the cable.
ACCESSORIES REAGENTS HI 7076 HI 84181-20 HI 84181-0 HI 84181-1 HI 84181-2 Electrode filling solution Reagent set for 20 tests ISA for Potassium electrode (500 mL) Standard 1 for Potassium electrode (500 mL) Standard 2 for Potassium electrode (500 mL) OTHER ACCESSORIES HI 61014 Potassium half cell HI 5315 Reference half cell HI 731316 Stir bar (5 pcs.) HI 731342 Automatic pipette 2000 µL HI 731352 Tips for 2000 µL automatic pipette (25 pcs.) HI 740036P Beaker 50 mL (10 pcs.) HI 740143 Syringe 1mL (6 pcs.
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.
