Hanna Instruments HI 96724 User Manual

INSTRUCTION MANUAL

HI 96724HI 96724

HI 96724

HI 96724HI 96724

Free & Total Chlorine ISM

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.

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 96724 Ion Selective Meter is supplied complete with:

• Two Sample Cuvettes and Caps

• 9V Battery

• 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.

For more details about spare parts and accessories see “Accessories”

Technical specifications:

Range 0.00 to 5.00 mg/L of Cl2 (Free or Total)

Resolution 0.01 mg/L (0.00-3.50 mg/L);

Accuracy ±0.03 mg/L ±3% of reading @ 25°C

Typical EMC Dev. ±0.01 mg/L

Light Source Tungsten lamp

Light Detector Silicon Photocell with narrow band interfer-

Method Adaptation of USEPA method 330.5 and

Environment 0 to 50°C (32 to 122°F);

Battery Type 1 x 9 volt

Auto-Shut off After 10' of non-use in measurement mode;

Dimensions 192 x 102 x 67 mm (7.6 x 4 x 2.6”)

Weight 290 g (10 oz.).

0.10 mg/L (above 3.50 mg/L)

ence filter @ 525 nm

Standard Method 4500-Cl G.

max 95% RH non-condensing

after 1 hour of non-use in calibration mode; with last reading reminder.

Functional description:

1. GLP/ key: press to enter

edit the date and time.

2. CAL CHECK key: press to perform the validation of the meter, or press and hold for three seconds to enter

3. ZERO/CFM key: press to zero the meter prior to measurement, to confirm edited values or to confirm factory calibration restore.

4. READ/ key: In In

GLP mode

press to view the next screen.

5. ON/OFF key: to turn the meter on and off.

6. Liquid Crystal Display (LCD)

7. Cuvette alignment indicator

8. Cuvette holder

DISPLAY ELEMENTS DESCRIPTION:

1. The measuring scheme (lamp, cuvette, detector), appears during different phases of zero or reading measurement

2. Error messages and warnings

3. The battery icon shows the charging level of the battery

4. The hourglass appears when an internal checking is in progress

5. Status messages

6. The chronometer appears when the reaction timer is running

7. The month, day and date icons appear when a date is displayed

8. Four digit main display

9. Measuring units

10. Four digit secondary display

GLP mode

measurement mode

. In

calibration mode

, press to make a measurement.

press to

Errors and warnings:

ON ZERO READING:

Light High: There is too much light to perform a measurement. Please check the preparation of the zero cuvette.

Light Low: There is not enough light to perform a measurement. Please check the preparation of the zero cuvette.

No Light:The instrument cannot adjust the light level. Please check that the sample does not contain any debris.

ON SAMPLE READING:

Inverted cuvettes: The sample and the zero cuvette are inverted.

Zero: A zero reading was not taken. Follow the instructions of the measurement procedure for zeroing the meter.

Under range: A blinking “0.00” indicates that the sample absorbs less light than the zero reference. Check the procedure and make sure you use the same cuvette for reference (zero) and measurement.

Over Range: A flashing value of the maximum concentration indicates an over range condition. The concentration of the sample is beyond the programmed range: dilute the sample and rerun the test.

DURING CALIBRATION PROCEDURE:

Standard Low: The standard reading is less than expected.

Standard High: The standard reading is higher than expected.

OTHER ERRORS AND WARNINGS:

Cooling lamp: The instrument waits for the lamp to cool down.

Battery low: The battery must be replaced soon.

Dead battery: This indicates that the battery is dead and must be replaced. Once this indication is displayed, the meter will lock up. Change the battery and restart the meter.

Measurement procedure:

Measurement

5-6

1• Turn the meter on by pressing ON/OFF. 2• When the beeper sounds briefly and the LCD

displays dashes, the meter is ready. The blinking “ZERO” indicates that the instrument needs to be zeroed first.

3• Fill the cuvette with 10 mL of unreacted

sample, up to the mark, and replace the cap.

4• Place the cuvette into the cuvette holder

and ensure that the notch on the cap is positioned securely into the groove.

5• Press ZERO/CFM and the lamp, cuvette

and detector icons will appear on the display, depending on the measurement phase.

6• After a few seconds the display will show

“-0.0-”. The meter is now zeroed and ready for measurement.

7• Remove the cuvette. 8•

For free chlorine measurement:

drops of HI 93701A-F (DPD1 indicator) and 3 drops of HI 93701B-F (DPD1 buffer) to an empty cuvette. Swirl gently to mix, and immediately add 10 mL of unreacted sample. Replace the cap and shake gently.

For total chlorine measurement:

drops of HI 93701A-T (DPD1 indicator), 3 drops of HI 93701B-T (DPD1 buffer) and 1 drop of HI 93701C-T (DPD3 solution) to an empty cuvette. Swirl gently to mix, and immediately add 10 mL of unreacted sample.

9• Replace the cap and shake gently for about

10 seconds relatively.

10•Immediately replace the cuvette into the cuvette

holder and ensure that the notch on the cap is positioned securely into the groove.

11•

For free chlorine measurement:

READ/ and the lamp, cuvette and

detector icons will appear on the display, depending on the measurement phase.

For total chlorine measurement:

for 2’ and 30’’ and press READ/ . The lamp, cuvette and detector icons will appear on the display, depending on the measurement phase.

add 3

press

wait

12•The instrument directly displays concentration

in mg/L of free/total chlorine (depending of what you measure) on the LCD.

INTERFERENCES

• Positive error: Bromine, Chlorine dioxide, Iodine, Oxidized Manganese and Chromium, Ozone

• Alkalinity above 250 mg/L CaCO3 or acidity above 150 mg/L CaCO3 will not reliably develop the full amount of color or it may rapidly fade. To resolve this, neutralize the sample with diluted HCl or NaOH.

• In case of water with hardness greater than 500 mg/L CaCO3, shake the sample for approximately 2 minutes after adding the powder reagent.

Validation and Calibration procedures

Warning: do not validate or calibrate the instrument with standard solutions other than the Hanna CAL CHECK™ Standards, otherwise erroneous results will be obtained. For accurate validation and calibration results, please perform tests at room temperature (18 to 25°C; 64.5 to 77.0°F).

Use the Hanna CAL CHECK™ cuvettes (see “Accessories”) to validate or calibrate instruments.

VALIDATION

1• Turn the meter on by pressing ON/OFF. 2• When the beeper sounds briefly and the

LCD displays dashes, the meter is ready.

3• Place the CAL CHECK™ Standard HI

96724-11 Cuvette A into the cuvette holder

and ensure that the notch on the cap is positioned securely into the groove.

4• Press ZERO/CFM and the lamp, cuvette

and detector icons will appear on the display, depending on the measurement phase.

5• After a few seconds the display will show

“-0.0-”. The meter is now zeroed and ready for validation.

6• Remove the cuvette. 7• Place the CAL CHECK™ Standard

HI 96724-11 Cuvette B into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove.

8• Press CAL CHECK key and the lamp,

cuvette and detector icons together with “CAL CHECK” will appear on the display, depending on the measurement phase.

9• At the end of the measurement the display

will show the validation standard value. The reading should be within specifications as reported on the CAL CHECK™ Standard

Validation

4-5

Certificate. If the value is found out of specifications, please check that the cuvettes are free of fingerprints, oil or dirt and repeat validation. If results are still found out of specifications then recalibrate the instrument.

CALIBRATION

Note: It is possible to interrupt the calibration

procedure at any time by pressing CAL CHECK or ON/OFF keys.

1• Turn the meter on by pressing ON/OFF. 2• When the beeper sounds briefly and the

LCD displays dashes, the meter is ready.

3• Press and hold CAL CHECK for three

seconds to enter display will show “CAL” during calibration procedure. The blinking “ZERO” asks for instrument zeroing.

4• Place the CAL CHECK™ Standard HI

96724-11 Cuvette A into the cuvette holder

and ensure that the notch on the cap is positioned securely into the groove.

6• Press ZERO/CFM and the lamp, cuvette

and detector icons will appear on the display, depending on the measurement phase.

7• After a few seconds the display will show

“-0.0-”. The meter is now zeroed and ready for calibration. The blinking “READ” asks for reading calibration standard.

8• Remove the cuvette. 9• Place the CAL CHECK™ Standard

HI 96724-11 Cuvette B into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove.

10•Press READ/ and the lamp, cuvette

and detector icons will appear on the display, depending on the measurement phase.

11•The instrument will show for three seconds

the CAL CHECK™ standard value.

Note: If the display shows “STD HIGH”, the

standard value was too high. If the display shows “STD LOW”, the standard value was too low. Verify that both CAL CHECK™ Standard HI 96724-11 Cuvettes, A and B are free from fingerprints or dirt and that they are inserted correctly.

Then the date of last calibration (e.g.: “01.08.2005”) appears on the display, or “01.01.2005” if the factory calibration was selected before. In both cases the year number is blinking, ready for date input.

calibration mode.

The

Calibration

6-7

10-11

12•Press GLP/ to edit the desired year

(2000-2099). If the key is kept pressed, the year number is automatically increased.

13•When the correct year has been set, press

ZERO/CFM or READ/ to confirm. Now the display will show the month blinking.

14•Press GLP/ to edit the desired month

(01-12). If the key is kept pressed the month number is automatically increased.

15•When the correct month has been set,

press ZERO/CFM or READ/ to confirm. Now the display will show the day blinking.

16•Press GLP/ to edit the desired day (01-

31). If the key is kept pressed the day number is automatically increased.

Note: It is possible to change the editing from

day to year and to month by pressing

READ/ .

17•Press ZERO/CFM to save the calibration

date.

18•The instrument displays “Stor” for one

second and the calibration is saved.

19•The instrument will return automatically

to the measurement mode by displaying dashes on the LCD.

GLP

In the

GLP mode

factory calibration can be restored.

LAST CALIBRATION DATE

1• Press GLP/ to enter

2• If no calibration was performed, the

, the last calibration date can be consulted and the

GLP mode

. The calibration month and day will appear on the main display and the year on the secondary display.

factory calibration message, “F.CAL” will appear on the main display and the instrument returns to

after three seconds.

mode

measurement

12-13

14-15

Last

Calibration

Date

3-4

Factory

Calibration

Restore

FACTORY CALIBRATION RESTORE

It is possible to delete the calibration and restore factory calibration.

1• Press GLP/ to enter

2• Press READ/ to enter in the factory

calibration restore screen. The instrument asks for confirmation of user calibration delete.

3• Press ZERO/CFM to restore the factory

calibration or press GLP/ again to abort factory calibration restore.

4• The instrument briefly notifies “done” when

restores factory calibration and returns to

measurement mode

GLP mode

Battery management

To save battery, the instrument shuts down after 10 minutes of non-use in

measurement mode

If a valid measurement was displayed before auto shut off, the value is displayed when the instrument is switched on. The blinking “ZERO” means that a new zero has to be performed.

One fresh battery lasts for arround 750 measurements, depending on the light level.

The remaining battery capacity is evaluated at the instrument startup and after each measurement. The instrument displays a battery indicator with three levels as follows:

• 3 lines for 100 % capacity

• 2 lines for 66 % capacity

• 1 line for 33 % capacity

• Battery icon blinking if the capacity is under 10 %. If the battery is empty and accurate measurements can’t be taken any

more, the instrument shows “ To restart the instrument, the battery must be replaced with a fresh one. To replace the instrument’s battery, follow the steps:

• Turn the instrument off by pressing ON/OFF.

• Turn the instrument upside down and remove the battery cover by turning it counterclockwise.

• Extract the battery from its location and replace it with a fresh one.

• Insert back the battery cover and turn it clockwise to close.

and after 1 hour of non-use in

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dead batt” and turns off.

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calibration mode.

Accessories:

REAGENT SETS

HI 93701-F 300 tests Free Chlorine HI 93701-T 300 tests Free and 100 tests Total Chlorine

HI 93711-D3 DPD3 reagent for 200 tests OTHER ACCESSORIES

HI 96724-11 CAL CHECK™ Standard Cuvettes (1 set)

HI 721310 9V battery (10 pcs) HI 731318 Cloth for wiping cuvettes (4 pcs) HI 731331 Glass cuvettes (4 pcs) HI 731335 Caps for cuvettes (4 pcs) HI 93703-50 Cuvette cleaning solution (230 mL).

Warranty

HI 96724 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. Damages due to accident, misuse, tampering or lack of prescribed maintenance are 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.

Recommendations for Users

Before using these products, make sure that they are entirely suitable for your specific application and for the environment in which they are used. Operation of these instruments 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’s EMC performance. To avoid damages or burns, do not put the instrument in microwave oven. For yours and the instrument safety do not use or store the instrument in hazardous environments.

Hanna Instruments reserves the right to modify the

design, construction and appearance of its products

IST96724 11/10

without advance notice.

For additional information, contact your

dealer or the nearest

Hanna Customer Service Center.

To find the Hanna Office in your area,

visit our web site

www.hannainst.com