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Hanna Instruments HI 96734 User Manual

Hanna Instruments Measuring instruments

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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

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 CaCO

3

or acidity

above 150 mg/L CaCO

3

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 CaCO

3

, shake the sample for approximately

2 minutes after adding the powder reagent.

1. RANGE/GLP/ key: press to change the parameter. 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

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

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

DISPLAY ELEMENTS DESCRIPTION:

INSTRUCTION MANUAL

HI 96734

HI 96734

HI 96734

HI 96734

HI 96734

Free & Total Chlorine

High Range ISM

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”

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].

Technical specifications:

Range

0.00 to 10.00 mg/L of Cl

2

(Free or Total)

Resolution

0.01 mg/L (0.00-3.50 mg/L);
0.10 mg/L (above 3.50 mg/L)

Accuracy

±0.03 mg/L ±3% of reading @ 25°C
Excluding dilution error

Typical EMC Dev.

±0.01 mg/L

Light Source

Tungsten lamp

Light Detector

Silicon Photocell with narrow band interfer-
ence filter @ 525 nm

Method

Adaptation of the USEPA method 330.5
and Standard Method 4500-Cl G.

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 102 x 67 mm (7.6 x 4 x 2.6”)

Weight

290 g (10 oz.).

Functional description:

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.

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.

Errors and warnings:

Measurement procedure:

Measurement

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

ON ZERO READING:

ON SAMPLE READING:

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.

Cooling lamp:

The instrument waits for the

lamp to cool down.

2

or

3

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.

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.

Standard Low:

The standard reading is less

than expected.

Standard High:

The standard reading is higher

than expected.

4

6, 13

5, 12

7-8

for Total
Chlorine

only

10

14

11

To activate

cowtdoun

OR WAIT...

... then just

PRESS

15

w w w . h a n n a i n s t . c o m