Hanna Instruments HI 96762 User Manual
INSTRUCTION MANUAL
HI 96762HI 96762
HI 96762
HI 96762HI 96762
Free Chlorine Meter
for Drinking Water
Application
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 tech@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 96762 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 0.000 to 0.500 mg/L
Resolution 0.001 mg/L
Accyracy ±0.020 mg/L ±3% of reading @ 25°C
Typical EMC Deviation ±0.001 mg/L
Light Source Tungsten lamp
Light Detector Silicon Photocell with narrow band interfer-
Method Adaptation of the Standard Method
Environment 0 to 50°C (32 to 122°F);
Battery Type 1 x 9 volt
Auto-Shut off After 10' of non-use in
Dimensions 192 x 104 x 69 mm (7.6 x 4.1 x 2.7”)
Weight 360 g (12.7 oz.).
ence filter @ 525 nm
4500-Cl G.
max 95% RH non-condensing.
measurement mode
after 1 hour of non-use in
with last reading reminder.
calibration mode
;
;
Functional description
1) GLP/ : press to enter
the date and time.
2) CAL CHECK: press to perform the validation of the meter, or press and
hold for three seconds to enter the
3) ZERO/CFM: to zero the meter prior to measurement, to confirm edited
values or to confirm factory calibration restore.
4) READ/ /TIMER: In
or press and hold for three seconds to start a pre-programmed
countdown prior to measurement. In
screen.
5) ON/OFF: to turn the meter on and off.
6) Liquid Crystal Display (LCD).
7) Cuvette alignment indicator.
8) Cuvette holder.
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 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
GLP mode
. In
measurement mode
calibration mode
calibration mode
, press to make a measurement,
GLP mode
press to edit
.
press to view the next
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
2
3
4, 9
5-6
8
10
1• Turn the meter on by pressing ON/OFF.
2• 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.
3• Fill the cuvette with 10 mL of unreacted
sample, up to the mark, and replace the
cap.
4• Place the cuvette into the cuvette 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.
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 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
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
on the measurement phase.
11•At the end of measurement, the instrument
directly displays concentration in mg/L of
free chlorine on the LCD.
INTERFERENCES
• Alkalinity: above 1,000 mg/L CaCO3 if present
as bicarbonate (HCO
above 25 mg/L CaCO3 if present as carbonate
2-
(CO
, sample pH > 9.0). In both cases, it
3
will not reliably develop the full amount of
color or it may rapidly fade (negative error).
To resolve this, neutralize the sample with
diluted HCl.
• Acidity: above 150 mg/L CaCO3. May not
reliably develop the full amout of color or it
may rapidly fade (negative error). To resolve
this, neutralize the sample with diluted NaOH.
• Hardness: in case of water with hardness
greater than 500 mg/L CaCO3, shake the
sample for approximately 2 minutes after
adding the powder reagent.
• Bromine (Br2), Chloride dioxide (ClO2), Iodine
(I2), Oxidized Manganese and Chromium,
Ozone (O3): positive error.
sample pH < 8.3);
3
or
11
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.
Use the Hanna CAL CHECK™ cuvettes (see
“Accessories”) to validate or calibrate instruments.
Validation
VALIDATION
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 96762-11 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 96762-11 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.
3
4-5
7
8
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.
CALIBRATION
Note: It is possible to interrupt the calibration
procedure at any time by pressing CAL
CHECK or ON/OFF keys.
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• Press and hold CAL CHECK for three
seconds to enter
display will show “CAL” during calibration
procedure. The blinking “ZERO” asks for
instrument zeroing.
4• Place the CAL CHECK™ Standard
HI 96762-11 Cuvette A into the cuvette
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.
6• 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.
7• Remove the cuvette.
8• Place the CAL CHECK™ Standard
HI 96762-11 Cuvette B into the cuvette
holder and ensure that the notch on the
cap is positioned securely into the groove.
9• Press READ/ /TIMER and the lamp,
cuvette and detector icons will appear on
the display, depending on the measurement
phase.
10•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 96762-11
Cuvettes, A and B are free from fingerprints
or dirt and that they are inserted correctly.
calibration mode.
The
9
Calibration
3
4
5-6
8
9-10
11• Then the date of last calibration (e.g.:
“01.08.2009”) appears on the display, or
“01.01.2009” if the factory calibration
was selected before. In both cases the year
number is blinking, ready for date input.
12•Press GLP/ to edit the desired year
(2009-2099). If the key is kept pressed,
the year number is automatically increased.
13•When the correct year has been set, press
ZERO/CFM or READ/ /TIMER to confirm.
Now the display will show the month
blinking.
14•Press GLP/ to edit the desired month
(01-12). If the key is kept pressed, the
month number is automatically increased.
15•When the correct month has been set,
press ZERO/CFM or READ/ /TIMER to
confirm. Now the display will show the
day blinking.
16•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.
17•Press ZERO/CFM to save the calibration
date.
18•The instrument displays “Stor” for one
second and the calibration is saved.
19•The instrument will return automatically
to
measurement mode
by displaying dashes
on the LCD.
GLP
In the
GLP mode
calibration can be restored.
LAST CALIBRATION DATE
1• Press GLP/ to enter
2• If no calibration was performed, the factory
, the last calibration date can be verified and the factory
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.
11-13
14-15
16
17
18
1
2
or
or
Last
Calibration
Date
FACTORY CALIBRATION RESTORE
It is possible to delete the calibration and
restore factory calibration.
1• Press GLP/ to enter
GLP mode
.
Calibration
2
Factory
Restore
2• Press READ/ /TIMER to enter in the
factory calibration restore screen. The
instrument asks for confirmation of user
calibration delete.
3• Press ZERO/CFM to restore the factory
calibration or press GLP/ again to
3-4
abort factory calibration restore.
4• The instrument briefly indicates “donE”
upon restoration of factory calibration prior
to returning to
measurement mode
.
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 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.
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
calibration mode.
Accessories:
REAGENT SETS
HI 95762-01 Reagents for 100 tests
HI 95762-03 Reagents for 300 tests
OTHER ACCESSORIES
HI 96762-11 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 96762 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
IST96762 01/11
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
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