Hanna Instruments HI 96762 Instruction Manual

99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
INSTRUCTION MANUAL 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
HI 96762 HI 96762 HI 96762 HI 96762 HI 96762
read it carefully before using the meter.
Free Chlorine Meter

Preliminary examination

for Drinking Water
Please examine this product carefully. Make sure that the instrument is

Application

not damaged. If any damage occured during shipment, please notify
your Dealer.
Each HI 96762 Ion Selective Meter is supplied complete with:
Note: Save all packing material until you are sure that the instrument
Range
Resolution
Accyracy
Typical EMC Deviation ±0.001 mg/L
Light Source
Light Detector
Method
Environment
Battery Type
Auto-Shut off
Dimensions
Weight
Functional description
• Two Sample Cuvettes and Caps
• 9V Battery
1) GLP/ : press to enter GLP mode . In calibration mode press to edit
• Instruction Manual
2) CAL CHECK: press to perform the validation of the meter, or press and
works correctly. Any defective item must be returned in its original
packing.
3) ZERO/CFM: to zero the meter prior to measurement, to confirm edited
4) READ/ /TIMER: In measurement mode , press to make a measurement,
For more details about spare parts and accessories
see "Accessories".
5) ON/OFF: to turn the meter on and off.
6) Liquid Crystal Display (LCD).

Technical specifications:

7) Cuvette alignment indicator.
0.000 to 0.500 mg/L
8) Cuvette holder.
0.001 mg/L
±0.020 mg/L ±3% of reading @ 25°C

DISPLAY ELEMENTS DESCRIPTION

Tungsten lamp
Silicon Photocell with narrow band interfer-
ence filter @ 525 nm
Adaptation of the Standard Method
4500-Cl G.
0 to 50°C (32 to 122°F);
max 95% RH non-condensing.
1 x 9 volt
1) The measuring scheme (lamp, cuvette, detector), appears during
After 10' of non-use in measurement mode ;
after 1 hour of non-use in calibration mode ;
2) Error messages and warnings
with last reading reminder.
3) The battery icon indicates the charge state of the battery
192 x 104 x 69 mm (7.6 x 4.1 x 2.7")
4) The hourglass appears when an internal check is in progress
360 g (12.7 oz.).
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
the date and time.
hold for three seconds to enter the calibration mode .
values or to confirm factory calibration restore.
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.
different phases of zero or reading measurement

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 "0.000" 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.
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, normal operation of the
instrument will be interrupted. Change the
battery and restart the meter.

Measurement procedure

Measurement
1• Turn the meter on by pressing ON/OFF.
2• When the beeper sounds briefly and the LCD
2
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.
3
4• Place the cuvette into the cuvette holder
and ensure that the notch on the cap is
positioned securely into the groove.
4, 9
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
5-6
for measurement.
7• Remove the cuvette.
8• Add the content of one packet of HI 95762-0
Free Chlorine reagent. Replace the cap and
shake gently for 20 seconds.
9• Replace the cuvette into the cuvette holder
and ensure that the notch on the cap is
positioned securely into the groove.
10•Press and hold READ/ /TIMER for three
8
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 1 minute and just
press READ/ /TIMER.
In both cases, the lamp, cuvette and detector
icons will appear on the display, depending
10
on the measurement phase.
11•At the end of measurement, the instrument
directly displays concentration in mg/L of
free chlorine on the LCD.