Hanna-instruments HI 96741 User Manual download pdf

INSTRUCTION MANUAL

HI 96741HI 96741

HI 96741

Total Hardness

and Iron LR

ISM

www.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 96741 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”.

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].

1. RANGE/GLP/ key: press to change the paramter, press and hold

for three seconds to enter

GLP mode

. In

calibration mode

press to 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

calibration mode

3. ZERO/CFM key: press to zero the meter prior to measurement, to

confirm edited values or to confirm factory calibration restore.

4. READ/ /TIMER 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.

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:

Functional 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 indicates the charge state of the battery

4. The hourglass appears when an internal check 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

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.

Errors and warnings:

ON ZERO READING:

ON SAMPLE READING:

DURING CALIBRATION PROCEDURE:

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.

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, normal operation of the

instrument will be interrupted. Change the

battery and restart the meter.

Standard Low: The standard reading is less

than expected.

Standard High: The standard reading is higher

than expected.

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

re-run the test.

1• Turn the meter on by pressing ON/OFF.

2• When the beeper sounds briefly and the LCD displays

dashes and “P1” (Total Hardness) and “P2” (pH)

the meter is ready. The code that appears on the

secondary display is the one of the last selected

parameter. If necessary, press RANGE/GLP/ to

change parameter. The blinking “ZERO” indicates

that the instrument needs to be zeroed first.

3• For Total Hardness: Fill a graduated beaker up to

the 50mL mark with the sample. Add 0.5 mL of

HI 93719A-0 Calcium And Magnesium Reagent

indicator solution and mix. Add 0.5 mL of

HI 93719B-0 Alkali solution for Calcium and

Magnesium and mix. Fill three cuvettes with 10mL

of sample each. Add 1 drop of HI 93719C-0

EDTA solution to one cuvette, replace the cap and

swirl the solution. This is the ZERO sample. Add 1

drop of HI 93719D-0 EGTA solution to the second

cuvette, replace the cap and swirl the solution. This

is the READ1 sample.

For Iron LR: Fill one graduated mixing cylinder up

to the 25 mL mark with deionized water. Add the

content of one packet of HI 93746-0 reagent, close

the cylinder and shake well for 30 seconds. This is

the blank.

Fill a cuvette with 10 mL of the blank up to the

mark and replace the cap.

4• Place the cuvette into the 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.

For Total Hardness: Place the ZERO sample into

the 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-”. Remove the ZERO sample and insert the

READ1 sample into the instrument. 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 30 seconds. The lamp, cuvette

and detector icons will appear on the display,

depending on the measurement phase, then the

instrument will display the level of Magnesium

hardness in mg/L CaCO

(togheter with “n”).

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• Add the specific test reagent for each parameter:

Total hardness: the third cuvette (nothing is added)

Iron LR: Fill one graduated mixing cylinder up to

the 25 mL mark with the sample.

Add the content of one packet of HI 93746-0 reagent,

close the cylinder and shake well for 30 seconds.

Fill a cuvette with 10 mL of the reacted sample up

to the mark and replace the cap.

9• Replace the cap and swirl the solution.

10•Replace the cuvette into the holder and ensure that

the notch on the cap is positioned securely into the

groove.

11• 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:

Iron LR: 30 seconds

Measurement procedure:

Measurement

5-6

Technical specifications:

Range Mg Hardness 0.00 to 2.00 mg/L

Ca Hardness 0.00 to 2.70 mg/L

Total Hardness 0.00 to 4.70 mg/L

Iron LR 0.00 to 1.60 mg/L

Resolution 0.01 mg/L Total Hardness

0.01 mg/L Iron LR

Accuracy Mg Hardness±0.11 mg/L ±5% of reading @ 25°C

Ca Hardness ±0.11 mg/L ±5% of reading @ 25°C

Iron LR ±0.01 mg/L ±8% of reading @ 25°C

Typical EMC Dev. ±0.02 mg/L Mg Hardness

±0.02 mg/L Ca Hardness

±0.01 mg/L Iron LR

Light Source Tungsten lamp

Light Detector Silicon Photocell with narrow band interference

filter @ 525 nm

Method For Total Hardness: Adaptation of the

Standard Methods

for the Examination of Water and Wastewater, 18

Edi-

tion,

colorimetric method. The reaction between Mg/Ca and

reagents causes a violet tint in the sample.

For Iron LR: Adaptation of the TPTZ method. The reaction

between iron and the reagent causes a violet tint in the

sample.

Environment 0 to 50°C (32 to 122°F);

max 95% RH non-condensing

Battery Type 1 x 9 volt

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

after 1 hour of non-use in calibration mode;

with last reading reminder.

Dimensions 192 x 104 x 69 mm (7.6 x 4.1 x 2.7”)

Weight 360 g (12.7 oz.).

8-9

5-6

1 2

Summary of Contents

Page 1 - INSTRUCTION MANUAL

INSTRUCTION MANUALHI 96741HI 96741HI 96741HI 96741HI 96741Total Hardnessand Iron LRISMwww.hannainst.comPreliminary examination:Please examine this pro

Page 2 - REAGENT SETS

Warning: do not validate or calibrate the instrument with standardsolutions other than the Hanna CAL CHECK™ Standards, otherwiseerroneous results will

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