Hanna Instruments HI 84184 User Manual

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Instruction Manual

HI 84184

ISE Fluoride

Meter

www.hannainst.com

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................................................................................................. 3

GENERAL DESCRIPTION ........................................................................................................ 3

SPECIFICATIONS................................................................................................................... 4

PRINCIPLE OF OPERATION .................................................................................................... 4

FUNCTIONAL DESCRIPTION................................................................................................... 5

START UP ............................................................................................................................ 6

GUIDE TO DISPLAY CODES ..................................................................................................... 6

TIPS FOR AN ACCURATE MEASUREMENT ............................................................................. 13

MEASUREMENT PROCEDURE .............................................................................................. 13

FUSE REPLACEMENT .......................................................................................................... 15

ELECTRODE CONDITIONING AND MAINTENANCE .................................................................. 15

ACCESSORIES .....................................................................................................................18

WARRANTY........................................................................................................................19

MODEL IDENTIFICATION

Two models are available:

HI 84184-01 - 115 Vac power supply HI 84184-02 - 230 Vac power supply

WARRA (NTY

All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner, Hanna Instruments Inc., Woonsocket, Rhode Island, 02895 , USA.

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.

Each HI 84184 instrument is supplied complete with:

• Reagents set for 20 tests

• One 1000 µL automatic pipette

• Four plastic tips for the 1000 µL automatic pipette

• Two 50 mL beakers

• Two 20 mL beakers

• HI 61010 Fluoride half cell

• HI 5315 Reference half cell

• HI 7662-T Temperature probe

• Stir bar (2 pcs.)

• Power cable

• HI 7075 Refilling solution (4×30 mL)

• One 1 mL syringe

• One 1 mL pipette

• Instruction sheet

• Instruction manual

Note:Save all packing material until you are sure that the instrument works correctly.

Any defective item must be returned in its original packing.

GENERAL DESCRIPTION

The HI 84184 is a low cost, easy to use, fluoride ISE instrument that performs automatic analysis with all the necessary calculations assuring to the user a simple and effective interface.

The instrument comes with a powerful and effective built-in algorithm to analyse the shape of the ISE electrode response and to determine the reaction completion.

By simply pressing the Start key, the instrument performs automatic analysis, all the necessary calculations and verifications. The result is immediately displayed in convenient units, then the instrument is ready for another measurement.

SIGNIFICANCE OF USE

Fluoride ion (F-) comes from grapes used for wine and its usual concentration value varies between

0.1 and 2 mg/L. Higher levels of fluoride content in wine can derive from cryolite used by farmers as an insecticide in the vine.

The HI 84184 ISE Fluoride meter measures the fluoride content in wine using an ion selective electrode. The used method is double standard addition, and the result is readily displayed in F

mg/L (ppm).

SPECIFICATIONS

Range 0.0 to 5.0 mg/L (ppm) F Resolution 0.1 mg/L (ppm) F

Accuracy ±5% of reading (see note) Sample volume 50 mL

Temperature Compensation Automatic from 0 to 80 °C Electrodes HI 61010 Fluoride 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 3 mg/L the instrument process information about the approximate fluoride content.

REQUIRED REAGENTS Code Description Quantity/Test HI 84184-0 TISAB W/5 10 mL HI 84184-1 Standard 1 1 mL HI 84184-2 Standard 2 1 mL

PRINCIPLE OF OPERATION

The determination of fluoride concentration is made according to double standard addition method. This technique enables an unknown concentration and the electrode’s slope factor to be determined simultaneously.

The Automatic Temperature compensation is available using HI 7662-T temperature probe. By setting the electrode isopotential point and enabling temperature compensation option in Setup menu, the obtained concentration is temperature compensated.

The accuracy of the obtained result depends on the stability of the mV reading in every step of the measurement.

Three selectable stability criteria can be selected in Setup menu. Select Medium or Accurate criteria in order to have accurate analysis.

FUNCTIONAL DESCRIPTION

INSTRUMENT DESCRIPTION

FRONT PANEL

1) Graphic LCD

2) Functional keys

3) Keypad

4) Electrode holder

REAR PANEL

5) Fluoride half cell 10) Temperature probe socket

6) Reference half cell 11) BNC electrode connector

7) Temperature probe 12) Power switch

8) Electrode holder 13) Fuse

9) Reference socket 14) 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.

3) HELP - to access/leave the instrument’s contextual help

5) Functional Keys

- to modify a parameter value, to scroll the information from the instrument’s setup

START UP

• Place the instrument on a flat table. Do not place the instrument in direct sunlight.

• Connect the instrument to mains socket with ground connection and the correct voltage and

frequency. See the label on the instrument rear for this.

• Connect the HI 61010 fluoride half cell, the HI 5315 reference half cell and the HI 7662-T

temperature probe.

• Turn the instrument ON using the power switch from the rear panel of the instrument and

wait until main screen is displayed.

GUIDE TO DISPLAY CODES

During the instrument’s operation a series of information is 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). The

warning symbol will be displayed if the temperature difference between the temperature of the sample confirmed at the first step and the subsequent readings is greater than 3 °C.

Measure screens

Main screen display

Press Setup to acces the instrument’s setup. Press RCL to view logged data. Press Start to begin a new measurement cycle. Press HELP at any moment to view the contextual help.

Conditioning screen

A two minutes conditioning period is initiated. Press Continue to stop this conditioning period and skip the message.

Measure screen

Press ESC at any moment during the measurement cycle and the instrument will return to the main screen. Press Pause to pause the measurement process. Press Stir to start/stop the stirrer. If the difference between the temperature of the sample confirmed at the first step and the subsequent readings is greater than 3°C and the temperature compensation feature is disabled in Setup, the temperature warning icon will blink and the message “WARNING: Large temperature change!” will be displayed.

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.

Wrong standard error screen

This screen is displayed if step 2 and 3 of the current reading is out of ±2000mV range or if the difference between the stable readings from the current and the previous step is too small (±3mV) or, if in auto confirm mode, the standard addition is not detected.

Add standard screen

Add the corresponding standard. Press READ to start the next step analysis if “Reading confirm” option is enabled in the Setup menu. If “Reading confirm” option is disabled, the instrument will start with the next step analysis.

Result screen

The ion concentration is displayed in mg/L (ppm) F

. If the concentration is out of range, the instrument displays the upper range limit blinking. Press LOG to save the measured concentration. A message indicating the free log space will be displayed for a few seconds. If the free log space is under 10% this message will be permanently displayed. Press Start to begin a new measurement cycle.

Wrong slope screen

This screen appears if the computed slope is not in the acceptable range. The acceptable range is 30% to 140% default slope (56 mV/decade) Press Start to begin a new measurement cycle.

Setup screens

While in the Setup menu it is possible to modify the instrument parameters. By pressing the

/ keys it is possible to move between the Setup options. Each menu option 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. Select Fast only for quick estimations; low accuracy in short time.

Temperature compensation

Options: Enable, Disable. Enable this feature only if HI 7662-T temperature probe is connected and electrode isopotential point is known. If enabled, the meter will take into account the temperature of the readings when evaluating the final result. If disabled, the computed concentration will not be temperature compensated. Press the functional key to select the desired option.

Isopotential point

Options: 1.0 to 50.0 mg/L (ppm). Press Modify to access the isopotential point concentration modify screen. Press

/ to increase/decrease the isopotential point concentration.

Press Accept to confirm the value or ESC to return to the Setup menu without saving. If the temperature compensation feature is disabled the meter will display “None” for the isopotential point, and the isopotential point modify screen cannot be accessed.

Concentration unit

Options: mg/L, ppm Press the corresponding functional key to select the desired concentration unit to be used in displaying measurement results.

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.

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. Press Accept to confirm the new values or ESC to return to

Setup menu without saving.

Time format

Options: AM/PM or 24 hours. Press the functional key in order to change the time format.

Date format

Press Modify to access the date format modify screen.

Press

/ or in order to select the desired format.

Press Accept to confirm the desired date format or ESC to return to the Setup menu without saving.

Language

Options: Up to four available 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.

Beep status

Options: Enable, Disable This option enables/disables the beep feature. Press the functional key in order to select the new option. When enabled, beep sounds as a short beep every time a key is pressed or when the reading must be confirmed. In auto confirm mode the instrument will beep until the standard addition is detected. A long beep alerts that the pressed key is not active.

Reading confirm

Options: Enable, Disable Enable this feature to manually confirm a stable reading. If disabled, the instrument will automatically store a reading when it becomes stable, and move to the next step of the measurement cycle. Press the functional key in order to select the new option.

Meter information

Press Select to view the firmware version, language version, mV factory calibration date and time and temperature factory calibration date and time.

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. 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.

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 deionised 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; add 10 mL of HI 84184-0 TISAB W/5, 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 61010 fluoride 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.

• Use the 1000 µL automatic pipette to add exactly 1 mL

of HI 84184-1 Standard when the meter asks for it. If the instrument is not in auto confirm mode, press READ to start next measurement step.

• Use the 1000 µL automatic pipette to add exactly 1 mL of HI 84184-2 Standard when the meter asks for it. If the instrument is not in auto confirm mode, press READ to start next measurement step.

• At the end of the measurement procedure the result is displayed as mg/L (ppm) F

Notes:

• If the reading is out of range, the upper range value is displayed blinking.

• If the evaluated slope is out of 30-140% range the instrument displays “- - - -” and “Wrong slope” message.

• If auto confirm mode is selected and beep feature is enabled, the instrument will beep after reading is confirmed until the addition of the standard is detected. If the addition of the standard is not detected after a period of time between 10 to 20 minutes, according with the stability criteria, “Wrong standard” message will be displayed.

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 fluoride electrode:

• Remove the protective cap from the HI 61010 fluoride sensor’s tip.

• Screw the fluoride cell into the electrode body.

• Soak in fluoride standard.

Preparation of reference electrode:

• Unwrap ParafilmTM seal found over ceramic junction on inner stern of the reference electrode 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.

• Using the dropper pipette provided, add a few drops of HI 7075 filling solution to the reference electrode, wetting the o-ring and rinsing out the fill solution chamber.

• Holding the body of the electrode depress the black cap with your thumb. This permits the fill solution to drain out of the body. Verify if the electrode returns to its original position. (You may need to gently assist for this to occur).

• Tighten the electrode cap onto the body and fill electrode body with HI 7075 filling solution until fill solution volume is just below fill hole.

• Place sensor and reference electrode into electrode holder and connect the Cable Connectors to the instrument.

Note: During measurement always operate reference electrode with the fill hole open. CLEANING PROCEDURE

• Rinse the fluoride electrode with deionised water. Check to see if the small scratches have been eliminated.

• Soak the fluoride electrode in a standard for one hour.

• Rinse with deionised water and blot dry.

REFERENCE ELECTRODE CLEANING

• Drain the old filling solution, rinse with an adequate HI 7075 solution, drain, then refill with HI 7075 solution.

• Do not use an electrode if cristalised salts are visible inside the electrode. Drain electrode, disassemble and rinse internal body with deionised water. Reassemble and refill with fresh refill solution.

• The internal chamber of this electrode is gell filled. If the electrode has been left dry for long periods of time the gell may be dehydrated and stable measurements may not be obtainable. Disassemble electrode and soak internal assembly in HI 7075 filling solution. Verify the ceramic is wetted by the fill solution. Warming the solution slightly (50 °C) before soaking will hasten this process. Permit the electrode to cool completely while immersed in this solution.

QUICK CHECK OF THE ELECTRODE SLOPE

• Connect the electrode and the reference electrode to the instrument.

• Press and hold down ESC, until the instrument enters in the reading check mode.

• Place 50 mL of deionized water into the beaker with a stir bar.

• Add 1 mL of HI 84184-1 Standard. Record the mV value when stable.

• Add an additional 10 mL of HI 84184-1 Standard to the solution. Wait for the reading to stabilize and record the mV value.

and HELP keys simultaneously and power on the meter. Wait

• The difference between the two recorded mV values gives the slope of the electrode. An acceptable value for this slope is 56 ± 4mV.

• Press ESC to leave the reading check mode.

PERIODIC MAINTENANCE

Inspect the electrode and the cable. The cable used for connection to the instrument must be intact and there must be no points of broken insulation on the cable, or cracks on the electrode stem or bulb. Connectors must be perfectly clean and dry. If any scratches or cracks are present, replace the electrode. Rinse off any salt deposits with deionized water. Add filling solution dosing to maintain a good head pressure. For optimal electrode response this level should be maintained and not be allowed to drop more than 2-3 cm (1 inch below fill hole).

STORAGE PROCEDURE

The HI 61010 sensor can be stored in standards for short periods of time and should be stored dry with the protective cap on, when not in use, for long periods of time. The HI 5315 reference electrode may be stored in air or aqueous solutions between sample measurements. If the electrode will be used frequently and needs to be ready for use, take measures to prevent evaporation of fill solution. Top off fill solution, replace o-ring, fill hole cover on the fill hole opening, and place protective cap over junction tip. Store the electrode upright. Before using, flush junction once and top off fill solution. For long term storage, disassemble electrode and wash all salts from assembly with deionized water. Wrap ceramic junction on inner stern in Parafilm

or other sealing film. Store dry and

disassembled.

MALFUNCTIONING

Reading fluctuates or drifts: Could be due to dirty or blocked reference electrode junction: follow the cleaning procedure above. Repeat the measurement with a fresh potassium electrode.

ACCESSORIES

REAGENTS HI 7075 Electrode filling solution HI 84184-20 Reagent set HI 84184-0 TISAB W/5 for Flouride electrode (5×100 mL) HI 84184-1 Standard 1 for Fluoride electrode (500 mL) HI 84184-2 Standard 2 for Fluoride electrode (500 mL)

OTHER ACCESSORIES HI 731316 Stir bar (5 pcs.) HI 731341 Automatic pipette 1000 µL HI 731351 Tips for 1000 µL automatic pipette (25 pcs.) HI 731355P Capilary pipette (20 pcs.) HI 740036P 50 mL plastic beaker (10 pcs.) HI 740037P 20 mL plastic beaker (10 pcs.) HI 740143 Syringe 1mL (6 pcs.) HI 740144 Syringe tip (6 pcs.) HI 7662-T Temperature probe HI 61010 Fluoride half cell HI 5315 Reference half cell

Recommendations for Users

Before using this product, make sure that it is entirely suitable for your specific application and for the environment in which it is used.

Operation of this instrument may cause unacceptable interferences to other electronic equipments, this requiring the operator to take all necessary steps to correct interferences.

Any variation introduced by the user to the supplied equipment may degrade the instrument EMC performance. To avoid damages or burns, do not put the instrument in microwave ovens. For yours and the instrument’s safety do not use or store the instrument in hazardous environments.

WARRA (NTY

Hanna Instruments reserves the right to modify the design, construction and appearance of its products

without advance notice.

WARRANTY

HI 84184 is warranted for two years against defects in workmanship and materials when used for its intended purpose and maintained according to the instructions.

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. If the repair is not covered by the warranty, you will be notified of the charges incurred.

If the instrument is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization Number from the Customer Service Department and then send it with shipment costs prepaid. When shipping any instrument, make sure it is properly packaged for complete protection.

To validate your warranty, fill out and return the enclosed warranty card within 14 days from the date of purchase.

SALES AND TECHNICAL SERVICE CONTACTSSALES AND TECHNICAL SERVICE CONTACTS

SALES AND TECHNICAL SERVICE CONTACTS

SALES AND TECHNICAL SERVICE CONTACTSSALES 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. 6296.7118 • Fax 6291.6906

South Africa:

Tel. (011) 615.6076 • Fax (011) 615.8582

Taiwan:

Tel. 886.2.2739.3014 • Fax 886.2.2739.2983

Thailand:

Tel. 66.2619.0708 • Fax 66.2619.0061

10/06

United Kingdom:

Tel. (01525) 850.855 • Fax (01525) 853.668

USA:

Tel. (401) 765.7500 • Fax (401) 765.7575

For e-mail contacts and a complete list of Sales and Technical offices, please see

www.hannainst.com

MAN84184

Hanna Instruments HI 84184 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual