Hanna Instruments HI 96734 User Manual

INSTRUCTION MANUAL

HI 96734HI 96734

HI 96734

HI 96734HI 96734

Free & Total Chlorine

High Range 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 [e-mail].

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 96734 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 10.00 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 the USEPA method 330.5

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)

Excluding dilution error

ence filter @ 525 nm

and 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. RANGE/GLP/ key: press to change the parameter. Press and hold

for three seconds to enter
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/ /TIMER key: In
measurement, or press and hold for three seconds to start a pre­programmed countdown prior to measurement. In
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

GLP mode

. In

measurement mode

calibration mode

calibration mode

, press to make a

GLP mode

press to edit

.

press to

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

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:

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, the meter will lock up.
Change the battery and restart the meter.

Measurement procedure:

Measurement

2

3

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

displays dashes and “P1” (Free Chlorine) or
“P2” (Total Chlorine) 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

or

parameter. The blinking “ZERO” indicates
that the instrument needs to be zeroed first.

3• Add to the cuvette 5 mL of HI 93734B-0

reagent by means of the 5 mL syringe.

Note: see the picture for correct measurement

of 5 mL with the syringe

7-8

10

11

14

15

4

5, 12

6, 13

To activate

cowtdoun

OR WAIT...

... then just

PRESS

4• Fill the cuvette up to the 10 mL mark

with 5 mL of unreacted sample, using the
3 mL plastic pipette.

Note: rinse the 3 mL plastic pipette several times

with sample before adding it to the cuvette.

5• Replace the cap and shake gently for

some seconds.

6• Place the cuvette into the cuvette holder

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

7• Press ZERO/CFM and the lamp, cuvette

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

8• After a few seconds the display will show

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

9• Remove the cuvette.
10•Only in the case of total chlorine measurement,

add 3 drops of HI 93734C-0 reagent to the
cuvette.

11•For both free and total chlorine, add the

content of one packet of HI 93701-0 Free
Chlorine reagent.

12•Replace the cap and shake gently for 20

seconds (or 2 minutes in case of seawater
analysis).

13•Replace the cuvette into the cuvette holder

for Total
Chlorine

only

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

14•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:

Free Chlorine: Total Chlorine:
1 minute 2 minutes and 30 seconds
Then press READ/ /TIMER.
In both cases the lamp, cuvette and
detector icons will appear on the display,
depending on the measurement phase.

15•The instrument directly displays concentration

in mg/L of free or total chlorine and the
range number on the LCD.

INTERFERENCES

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

• 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
Note: The validation is performed only for the

selected parameter. For full validation of
the instrument, the following procedure
must be performed for each parameter.

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

96734-11 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 96734-11 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
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.

Validation

3

4-5

7

8

9

CALIBRATION

Note: It is possible to interrupt the calibration

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

When calibrating, only the selected range
is affected.

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• To change the range, simply press RANGE/

GLP/ .

4• Press and hold CAL CHECK for three

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

5• Place the CAL CHECK™ Standard HI

96734-11 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 96734-11 Cuvette B into the cuvette
holder and ensure that the notch on the
cap is positioned securely into the groove.

10•Press READ/ /TIMER 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
96734-11 Cuvettes, A and B are free
from fingerprints or dirt and that they
are inserted correctly.

12• 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.

13•Press RANGE/GLP/ to edit the desired

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

calibration mode.

The

Calibration

4

5

6-7

9

10-11

12

13-14

or

increased.

14•When the correct year has been set, press

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

15•Press RANGE/GLP/ to edit the desired

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

16•When the correct month has been set, press

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

17•Press RANGE/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.

18• Press ZERO/CFM to save the calibration date.

19•The instrument displays “Stor” for one

second and the calibration is saved.

20•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 RANGE/GLP/ to enter

2• If no calibration was performed, the factory

FACTORY CALIBRATION RESTORE

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

1• Press and hold for three seconds RANGE/

2• Press READ/ /TIMER to enter in the

3• Press ZERO/CFM to restore the factory

, 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.

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

measurement mode

after three

seconds.

GLP/ to enter

GLP mode

.

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

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

.

15-16

17

18

19

20

1

2

2

or

Last

Calibration

Date

Factory

Calibration

Restore

4• The instrument briefly notifies “done” when

restores factory calibration and returns to

measurement mode

.

3-4

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 93734-01 Reagents for 100 tests
HI 93734-03 Reagents for 300 tests

OTHER ACCESSORIES

HI 96734-11 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 96734 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

IST96734 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