Hi 96721 инструкция на русском

Related Manuals for Hanna Instruments HI 96721

HI 96721 Портативный анализатор железа. Определяет содержание железа в пробах воды колориметрическим методом в диапазоне от 0.00 до 5.00 мг/л.

Снят с производства. Аналог HI 97721

Старое наименование HI 93721, HI 95721

Технические характеристики

• Диапазон измерения  0.00 : 5.00 мг/л
• Разрешение  0.01 мг/л
• Погрешность ±0.04 мг/л ± 2% @ 25°C
• Источник света вольфрамовая лампа
• Фотоэлемент на основе кремния
• Источник питания 1 x 9V
• Время работы от батареи 40 часов
• Условия эксплуатации
  • температура 0 : 50°C
  • влажность до 95%
• Габариты 192 x 104 x 69 мм
• Вес 320г

Наборы реагентов, расходные материалы (по заявке)

• HI 731331 кювета стеклянная для колориметров HI 957xx и HI 967xx (уп/4шт)
• HI 93721-01 набор тестов на железо, высокие концентрации (100 тестов)
• HI 93721-03 набор тестов на железо, высокие концентрации (300 тестов)
• HI96721-11 Калибровочный стандарт
• HI740029P 9V батарея (10 шт.)
• HI731318 ткань для протирки кювет (4 шт/уп)
• HI731331 кювета стеклянная для колориметров HI 957xx и HI 967xx (уп/4шт)
• HI731335 крышка для кювет HI 731331 (уп/4шт)
• HI740318 Кейс для колориметров серии HI967хх
• HI93703-50 раствор для чистки кювет (230мл)

Железо, так или иначе, присутствует в жидкой среде, однако его повышенное содержание, характерное, как правило, для сточных вод, подлежащих очистке, не только вредит здоровью человека, но и, к примеру, может испортить вкус блюд, вывести из строя бытовую технику, придать характерный грязно-железистый оттенок свежевыстиранному белью и т. д. А в водопроводных и отопительных системах железо, со всей очевидностью, служит индикатором присутствия и интенсивности протекания коррозийных процессов. Вот почему концентрацию железа в воде требуется отслеживать как на предприятиях водоочистки, так и в других важных сферах деятельности человека. Для оценки этого параметра отлично подходит портативный фотоколориметр железа HI96721 от компании Hanna Instruments, определяющий содержание данного элемента в образцах пресной воды в высоких концентрациях – от 0 до 5.00 мг/л. Точность, удобство эксплуатации и длительный срок службы прибора позволили ему войти в Государственный реестр средств измерений России, а компания-производитель, в свою очередь, предоставляет на свой продукт годовую гарантию.

Главные потребительские свойства и функционал фотометра-колориметра железа Hanna HI96721

Устройство определения высоких концентраций железа – миниатюрный фотоколориметр HI96721 от бренда Ханна – сочетает высокую точность исследований (погрешность не более ± 0,04 мг/л ± 2% от результатов при температуре 25 °C) с отличной эргономикой и современным дизайном корпуса, что оптимизирует рабочий процесс и снижает утомляемость пользователя. Для определения содержания железа применяются специальные готовые реагенты под маркировкой HI93721-01, а проверкой работоспособности и состояния калибровки прибора занимается эксклюзивная система CAL Check, разработанная специалистами Ханна для повышения точности измерительного оборудования. Также на точность позитивно влияет особая внутренняя конструкция прибора, предполагающая фиксацию кюветы в ячейке для измерений в единственно верном положении, обеспечивая, тем самым, одинаковость пути прохождения светового луча.  

Среди удобных функций, которыми наделён фотометр HI96721, можно выделить встроенный таймер, гарантирующий строго определённый отрезок времени, отведённый на измерения, систему выдачи сообщений об ошибках, облегчающую управление измерительными процессами, индикацию охлаждения лампы, обеспечивающую поддержание оптимальной длины волны, автоотключение прибора при необращении к нему.

Бренд	HANNA Instruments
Диапазон измерения	от 0,00 до 5,00 мг/л (частей на миллион)
Госреестр	Внесен
Точность	при 25 °C ± 0,04 мг/л ± 2% от показаний
Разрешение	0,01 мг/л (частей на миллион)
Автоотключение	после 10 минут неиспользования в режиме измерения; после одного часа неиспользования в режиме калибровки; с напоминанием последнего измерения
Дополнительный функционал	GLP проверка даты последней калибровки, встроенный таймер, сообщения об ошибках, индикатор охлаждения лампы, индикатор состояния батарейки
Метод измерения	адаптированный метод 315B с фенантролином разработанный Управлением по охране окружающей среды США (USEPA) и Стандартный метод 3500-Fe B
Детектор света	кремниевый фотоэлемент с узкой интерференционной полосой фильтра при 525 нм
Источник света	светодиод
Питание	батарейка 9В
Комплектация	прибор HI96721, 2 кюветы для образцов с крышками, батарейка, инструкция по эксплуатации (стандарты CAL Check, кейс для транспортировки и необходимые реагенты заказываются отдельно)
Габариты	193 x 104 x 69 мм
Вес	360 г
Гарантия	12 месяцев

Instruction Manual

HI 96721

Iron High Range ISM

w w w . h a n n a i n s t . 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. If you need additional technical information, do not hesitate to e-mail us at [email protected]

TABLE OF CONTENTS

PRELIMINARY EXAMINATION …………………………………………………………………………………. 3

GENERAL DESCRIPTION ………………………………………………………………………………………… 4

ABBREVIATIONS …………………………………………………………………………………………………. 4

SPECIFICATIONS …………………………………………………………………………………………………. 5

PRECISION AND ACCURACY ……………………………………………………………………………………. 5

PRINCIPLE OF OPERATION …………………………………………………………………………………….. 6

FUNCTIONAL DESCRIPTION …………………………………………………………………………………… 7

ERRORS AND WARNINGS …………………………………………………………………………………….. 9

GENERAL TIPS FOR AN ACCURATE MEASUREMENT ………………………………………………….. 11

STARTUP…………………………………………………………………………………………………….12

MEASUREMENT PROCEDURE ………………………………………………………………………………. 12

VALIDATION PROCEDURE …………………………………………………………………………………….15

CALIBRATION PROCEDURE …………………………………………………………………………………..17

GLP……………………………………………………………………………………………………………20

BATTERY MANAGEMENT ……………………………………………………………………………………..21

BATTERY REPLACEMENT ……………………………………………………………………………………..22

ACCESSORIES …………………………………………………………………………………………………..22

WARRANTY …………………………………………………………………………………………………..23

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.

2

PRELIMINARY EXAMINATION

Please examine this product carefully. Make sure that the instrument is not damaged. If any damage occurred during shipment, please notify your Dealer.

Each HI 96721 Ion Selective Meter is supplied complete with:

• Two Sample Cuvettes and Caps

• CAL CHECK standard cuvettes

• 9V Battery

• Scissors

• Cloth for wiping cuvettes

• Instrument quality certificate

• Instruction Manual

• Rigid carrying case

Note: Save all packing material until you are sure that the instrument works correctly. Any defective item must be returned in its original packing.

3

GENERAL DESCRIPTION

The HI 96721 is an auto diagnostic portable microprocessor meter that benefits from Hanna’s years of experience as a manufacturer of analytical instruments. It has the advanced optical system based on a special tungsten lamp and a narrow band interference filter that allows most accurate and repeatable readings. All instruments are factory calibrated and the electronic and optical design minimizes the need of frequent calibration.

With the powerful CAL CHECK TM validation function, you are able to validate good performance of your instrument at any time. The validation procedure is extremely user friendly. Just use the exclusive HANNA ready-made, NIST traceable standards to verify the performance of the instrument and recalibrate if necessary.

All instruments are splash waterproof and the lamp and filter units are protected from dust or dirt by a transparent cup. This makes the instruments fulfill field applications. Display messages aid the user in routine operation. The meter has an auto-shut off feature that will turn off the instrument after 10 minutes of non use in measurement mode or after 1 hour if left in calibration mode.

The meter uses an exclusive positive-locking system to ensure that the cuvette is in the same position every time it is placed into the measurement cell. It is designed to fit a cuvette with a larger neck making it easier to add both sample and reagents. The cuvette is made from special optical glass to obtain best results.

The HI 96721 meter measures total iron (Fe) content in water samples in the 0.00 to 5.00 mg/L

(ppm) range. The method is an adaptation of the USEPA Method 315B for natural and treated waters, and Standard Method 3500-Fe B for water and wastewater.

The reagent contains both a reducing and a complexing agent: the first converts all but very most resistant forms of iron present in the sample to the ferrous (Fe 2+ ) or soluble state; the second reacts with the ferrous iron to form the characteristic orange-colored complex.

The reagent is in powder form and is supplied in packets. The amount of reagent is precisely dosed to ensure the maximum repeatability.

ABBREVIATIONS

°C :

EPA :

°F : mg/L : mL :

mV:

degree Celsius

US Environmental Protection Agency degree Fahrenheit milligrams per liter. mg/L is equivalent to ppm (parts per million) milliliter millivolts

4

SPECIFICATIONS

Range

Resolution

Light Detector

Method

Environment

Battery Type

Auto-Shut off

0.00 to 5.00 mg/L

0.01 mg/L

Accuracy ±0.04 mg/L ± 2% of reading @ 25°C

Typical EMC Deviation

±0.01 mg/L

Light Source Tungsten lamp

Silicon Photocell with narrow band interference filter @ 525 nm

Adaptation of the USEPA method 315B and Standard Method 3500-Fe B.

The reaction between iron and the phenantroline reagent causes an orange tint in the sample.

0 to 50°C (32 to 122°F); max 95% RH non-condensing

1 x 9 volt

After 10′ of non-use in measurement mode; after 1 hour of non-use in calibration mode; with last reading reminder.

Dimensions

Weight

192 x 102 x 67 mm (7.6 x 4 x 2.6″)

290 g (10 oz.).

REQUIRED REAGENTS

Code

HI 93721-0

Description

Iron High Range Powder Reagent

Quantity/test

1 packet

PRECISION AND ACCURACY

agree with each other. Precision is usually expressed as standard deviation (SD).

result to the true value.

Although good precision suggests good accuracy, precise results can be inaccurate. The figure explains these definitions.

In a laboratory using a standard solution of 1.50

mg/L Iron and a representative lot of reagent, an operator obtained with a single instrument a standard deviation of 0.010 mg/L.

5

PRINCIPLE OF OPERATION

Absorption of Light is a typical phenomenon of interaction between electromagnetic radiation and matter. When a light beam crosses a substance, some of the radiation may be absorbed by atoms, molecules or crystal lattices.

If pure absorption occurs, the fraction of light absorbed depends both on the optical path length through the matter and on the physical -chemical characteristics of the substance according to the

Lambert-Beer Law:

-log

I

/

I o

=

ε

λ or

A

=

ε

λ c d c d

Where:

-log

I

/

I o

= Absorbance (A)

I o

= intensity of incident light beam

I

= intensity of light beam after absorption

ε

= molar extinction coefficient at wavelength

λ

λ c = molar concentration of the substance d = optical path through the substance

Therefore, the concentration «c» can be calculated from the absorbance of the substance as the other factors are known.

Photometric chemical analysis is based on the possibility to develop an absorbing compound from a specific chemical reaction between sample and reagents. Given that the absorption of a compound strictly depends on the wavelength of the incident light beam, a narrow spectral bandwidth should be selected as well as a proper central wavelength to optimize measurements.

The optical system of Hanna’s HI 96 series colorimeters is based on special subminiature tungsten lamps and narrow-band interference filters to guarantee both high performance and reliable results.

HI 96 series block diagram (optical layout)

6

A microprocessor controlled special tungsten lamp emits radiation which is first optically conditioned and beamed to the sample contained in the cuvette. The optical path is fixed by the diameter of the cuvette. Then the light is spectrally filtered to a narrow spectral bandwidth, to obtain a light beam of intensity

I o

or

I.

The photoelectric cell collects the radiation

I

that is not absorbed by the sample and converts it into an electric current, producing a potential in the mV range.

The microprocessor uses this potential to convert the incoming value into the desired measuring unit and to display it on the LCD.

The measurement process is carried out in two phases: first the meter is zeroed and then the actual measurement is performed.

The cuvette has a very important role because it is an optical element and thus requires particular attention. It is important that both, the measurement and the calibration (zeroing) cuvettes, are optically identical to provide the same measurement conditions. Whenever possible use the same cuvette for both. It is necessary that the surface of the cuvette is clean and not scratched. This to avoid measurement interference due to unwanted reflection and absorption of light. It is recommended not to touch the cuvette walls with hands.

Furthermore, in order to maintain the same conditions during the zeroing and the measuring phases, it is necessary to close the cuvette to prevent any contamination.

FUNCTIONAL DESCRIPTION

INSTRUMENT DESCRIPTION

1) GLP/ key

2) CAL CHECK key

3) ZERO/CFM key

4) READ/ /TIMER key

5) ON/OFF key

6) Liquid Crystal Display (LCD)

7) Cuvette alignment indicator

Cuvette holder

7

KEYPAD DESCRIPTION

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

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

• READ/ /TIMER: this is a multi-functional key. In measurement mode, press to make a measurement, or press and hold for three seconds to start a pre-programmed countdown prior to measurement. In GLP mode press to view the next screen.

• CAL CHECK: this is a bi-functional key. Just press to perform the validation of the meter, or press and hold for three seconds to enter calibration mode.

• GLP/ : this is a bi-functional key. Just press to enter GLP mode. In calibration mode press to edit the date and time.

OPERATING MODES

• Measurement mode: default operation mode, enables both validation and measurement.

• Calibration mode: may be entered by keeping CAL CHECK pressed for three seconds ( the

“CAL” tag appears), it enables calibration of the instrument.

• GLP mode may be entered by pressing GLP/ (“GLP” appears), it enables consulting of user calibration date or restore factory calibration.

DISPLAY ELEMENTS DESCRIPTION

5

4

3

2

1

6 7

8

9

10

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

Four digit main display

9) Measuring units

10) Four digit secondary display

8

ERRORS AND WARNINGS

The instrument shows clear messages when erroneous condition appears. Messages are also displayed when the obtained values are outside expected range. The beeper is playing a beep on errors.

a) 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.

b) 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.

9

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 re-run the test.

c) during calibration procedure

Standard Low: The standard reading is less than expected.

Standard High:

The standard reading is higher than expected.

d) other errors and warnings

Cap error: Appears when external light enters in the analysis cell. Assure that the cuvette cap is present.

Cooling lamp:

The instrument waits for the lamp to cool down.

10

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.

GENERAL TIPS FOR AN ACCURATE MEASUREMENT

The instructions listed below should be carefully followed during testing to ensure best accuracy.

• Color or suspended matter in large amounts may cause interference, therefore these should be removed by treatment with active carbon and by prior filtration.

• For a correct filling of the cuvette: the liquid in the cuvette forms a concavity on the top; the bottom of this concavity must be at the same level of the 10 mL mark.

• Proper use of the powder reagent packet:

(a) use scissors to open the powder packet;

(b) push the edges of the packet to form a spout;

(c) pour out the content of the packet.

• It is important that the sample does not contain any debris. This would corrupt the reading.

• Each time the cuvette is used, the cap must be tightened to the same degree.

11

• Whenever the cuvette is placed into the measurement cell, it must be dry outside, and completely free of fingerprints, oil or dirt. Wipe it thoroughly with HI 731318 or a lint-free cloth prior to insertion.

• Shaking the cuvette can generate bubbles in the sample, causing higher readings. To obtain accurate measurements, remove such bubbles by swirling or by gently tapping the cuvette.

• Do not let the reacted sample stand too long after reagent is added, or accuracy will be lost.

• It is possible to take multiple readings in a row, but it is recommended to take a new zero reading for each sample and to use the same cuvette for zeroing and measurement.

• After the reading it is important to discard immediately the sample, otherwise the glass might become permanently stained.

• All the reaction times reported in this manual are referred to 20°C (68°F). As a general rule of thumb, they should be doubled at 10°C (50°F) and halved at 30°C (86°F).

• In order to maximize accuracy, prior to a measurement follow the validation procedure to be sure that the instrument is properly calibrated. If necessary, calibrate the instrument.

STARTUP

Prepare the instrument for measurement as follows:

• Unpack the instrument by removing the dust protection sleeve from the instrument cuvette holder.

• Place the battery in the instrument as described in the “BATTERY REPLACEMENT” chapter.

• Place the instrument on a flat table.

• Do not place the instrument under direct sun light.

MEASUREMENT PROCEDURE

To compensate the meter for the sample turbidity or color, the measurement takes place in two phases. First, the meter is zeroed using the unreacted sample. After the reagents are added the reacted sample is measured.

• Turn the meter on by pressing ON/OFF. The display briefly shows all tags on.

12

• 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.

• Fill the cuvette with 10 mL of unreacted sample, up to the mark, and replace the cap.

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

• Press ZERO/CFM and the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase.

• After a few seconds, the display will show

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

13

• Remove the cuvette.

• Add the content of one packet of

HI 93721-0 Iron High Range reagent to the cuvette. Replace the cap and shake gently until dissolution is complete.

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

• Press and hold READ/ /TIMER for three seconds.

The display will show the countdown prior to measurement. The beeper is playing a beep at the end of countdown period.

Alternatively, wait for 3 minutes and just press READ/ /TIMER.

In both cases, the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase.

• At the end of measurement, the instrument directly displays concentration in mg/L of iron on the LCD.

INTERFERENCES

Alkalinity: above 2,000 mg/L (as CaCO

3

). May slow down color development (negative error).

To resolve this, neutralize the sample with diluted

HCl

14

Calcium (Ca

2+

):

Copper (Cu 2+ ):

Magnesium (Mg 2+ ):

Molybdate Molybdenum:

High Iron concentrations:

High sulfide concentrations (S 2):

Silica (SiO

2

): above 10,000 mg/L as CaCO

3 does not interfere: reagent contains a masking agent.

above 100,000 mg/L as CaCO

3 above 25 mg/L (as Mo-MoO

4

) (positive error)

Sample containing up to 50 mg/L Mo-MoO

4 may be measured if a reading is taken after 1 minute instead of 3 minutes.

up to 200 mg/L do not inhibit color development; above 200 mg/L color development may be inhibited.

high sulfide concentrations may interfere

To reduce sulfide: acidify the sample and boil for about 20 minutes, neutralize and adjust volume before measurements.

above 175 mg/L (as SiO

2

). May slow down color development (negative error)

VALIDATION PROCEDURE

Use the validation procedure to ensure that the instrument is properly calibrated.

Warning: Do not validate the instrument with any standard solutions other than the HANNA CAL

CHECK TM Standards, otherwise erroneous results will be obtained.

• Turn the meter on by pressing ON/OFF.

• When the beeper sounds briefly and the

LCD displays dashes, the meter is ready.

• Place the CAL CHECK TM Standard

HI 96721-11 Cuvette A into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove.

15

• Press ZERO/CFM and the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase.

• After a few seconds, the display will show

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

• Remove the cuvette.

• Place the CAL CHECK

TM

Standard HI 96721-11

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

• Press CAL CHECK

TM

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

• At the end of the measurement the display will show the validation standard value.

The reading should be within specifications as reported in the CAL CHECK TM Standard

Certificate. If the value is found out of the 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.

16

CALIBRATION PROCEDURE

Note: It is possible to interrupt calibration procedure at any time by pressing CAL CHECK or

ON/OFF keys.

Warning : Do not calibrate the instrument with standard solutions other than the HANNA CAL

CHECK

TM

Standards, otherwise erroneous results will be obtained.

• Turn the meter on by pressing ON/OFF.

• When the beeper sounds briefly and the

LCD displays dashes, the meter is ready.

• Press and hold CAL CHECK for three seconds to enter calibration mode. The display will show “CAL” during calibration procedure. The blinking

“ZERO” asks for instrument zeroing.

• Place the CAL CHECK TM Standard

HI 96721-11 Cuvette A into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove.

• Press ZERO/CFM and the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase.

17

• 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.

• Remove the cuvette.

• Place the CAL CHECK TM Standard HI 96721-11

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

• Press READ/ /TIMER and the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase.

• After measurement 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 TM Standard

HI 96721-11 Cuvettes, A and B are free from fingerprints or dirt and that they are inserted correctly.

Then the date of the 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.

18

DATE INPUT

• Press GLP/ to edit the desired year

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

• When the correct year has been set, press

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

• Press GLP/ to edit the desired month

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

• When the correct month has been set, press ZERO/CFM or READ/ /TIMER to confirm. Now the display will show the day blinking.

• 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/ /TIMER .

• Press ZERO/CFM to save the calibration date.

• The instrument displays “Stor” for one second and the calibration is saved.

19

or or

• The instrument will return automatically to the measurement mode by displaying dashes on the LCD.

G L P

In the GLP mode, the last user calibration date can be consulted and the factory calibration can be restored.

LAST CALIBRATION DATE

To display the calibration date:

• Press GLP/ to enter

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

• If no calibration was performed, the factory calibration message, “F.CAL” will appear on the main display and the instrument returns to measurement mode after three seconds.

FACTORY CALIBRATION RESTORE

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

• Press GLP/ to enter GLP mode.

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• Press READ/ /TIMER to enter in the factory calibration restore screen. The instrument asks for confirmation of user calibration delete.

• Press ZERO/CFM to restore the factory calibration or press GLP/ again to abort factory calibration restore.

• The instrument briefly notifies “done” when restores factory calibration and returns to measurement mode.

BATTERY MANAGEMENT

To save battery, the instrument shuts down after 10 minutes of non-use in measurement mode and after 1 hour of non-use in calibration 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 around 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 anymore, the instrument shows “dead batt ” and turns off.

To restart the instrument, the battery must be replaced with a fresh one.

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BATTERY REPLACEMENT

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.

ACCESORIES

HI 93721-01

HI 93721-03

HI 96721-11

HI 721310

HI 731318

HI 731331

HI 731335

HI 741218

HI 93703-50

Reagents for 100 tests

Reagents for 300 tests

CAL CHECK

TM

Standard Cuvettes (1 set)

9V battery (10 pcs.)

Cloth for wiping cuvettes (4 pcs.)

Glass cuvettes (4 pcs.)

Caps for cuvettes

Carrying case

Cuvette cleaning solution (230 mL)

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WARRANTY

HI 96721 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 instruments’ 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 without advance notice.

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Hanna Instruments Inc.

Highland Industrial Park

584 Park East Drive

Woonsocket, RI 02895 USA

Technical Support for Customers

Tel. (800) 426 6287

Fax (401) 765 7575

E-mail [email protected]

www.hannainst.com

Local Sales and Customer Service Office

Printed in EUROPE

(ROMANIA)

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MAN96721 06/11