Hanna Instruments HI 96736-24 User Manual
INSTRUCTION MANUAL
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HI 96736HI 96736
HI 96736
HI 96736HI 96736
Hardness
www.hannainst.com
and pH
ISM
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 96736 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 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
Resolution 0.01 mg/L Hardness
Accuracy
Typical EMC Dev. ±0.02 mg/L Mg Hardness
Light Source Tungsten lamp
Light Detector Silicon Photocell with narrow band interference
Method For hardness: Adaptation of the
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 104 x 69 mm (7.6 x 4.1 x 2.7”)
Weight 360 g (12.7 oz.).
pH 6.5 to 8.5
0.1 pH
Mg Hardness ±0.11 mg/L ±5% of reading @ 25°C
Ca Hardness ±0.11 mg/L ±5% of reading @ 25°C
pH ±0.1 pH @ 25°C
±0.02 mg/L Ca Hardness
±0.1 pH
filter @ 525 nm
Examination of Water and Wastewater, 18
rimetric method. The reaction between Mg/Ca and reagents
causes a violet tint in the sample.
For pH: Phenol red method. The reaction with reagents
causes a red tint in the sample.
max 95% RH non-condensing
after 1 hour of non-use in calibration mode;
with last reading reminder.
Standard Methods for the
th
Edition,
colo-
Functional description:
1. RANGE/GLP/ key: press to change the paramter, press and
hold for three seconds to enter
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
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
pre-programmed countdown prior to measurement. In
press to view the next screen.
mode
GLP mode
measurement mode
. In
calibration mode
calibration mode
, press to make a
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:
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 change state level 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
Errors and warnings:
ON ZERO READING:
ON SAMPLE READING:
.
GLP
DURING CALIBRATION PROCEDURE:
OTHER ERRORS AND WARNINGS:
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 value of the
minimum concentration 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.
Standard Low: The standard reading is
less than expected.
Standard High: The standard reading is
higher than expected.
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
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3
4
5-6
8-9
10
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 pH: Fill the cuvette with 10 mL of
unreacted sample, 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 CaCO3 (togheter with
“n”).
6• After a few seconds the display will show
“-0.0-”. The meter is now zeroed and
ready for measurement (except for
Hardness).
7• Remove the cuvette.
8• Add the specific test reagent for each
parameter:
Total hardness: the third cuvette (nothing
is added)
pH: 5 drops of HI 93710-0
9• Replace the cap and swirl the solution:
for pH invert several times to mix.
10•Replace the cuvette into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
11•Press READ/ /TIMER. In all cases the
lamp, cuvette and detector icons will
appear on the display, depending on
the measurement phase.
12•For Hardness the instrument will display
the concentration of Calcium in mg/L
CaCO3 (together with ‘’C’’). Press READ/
/TIMER again, the lamp, cuvette
and detector icons will appear on the
display, depending on the measurement
phase. The isntrument will display the
total hardness concentration in mg/L
CaCO3 (together with ‘’t’’).
For pH the instrument directly displays the pH measured value.
INTERFERENCES:
• Total Hardness: Excessive amounts of heavy metals.
Note: If the sample is very acidic, some extra drops of HI 93735B
buffer reagent may be added.
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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 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.
Validation
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4-5
7• Place the specific CAL CHECKTM Standard
Cuvette B into the cuvette holder, for:
Hardness: B, HI 96719-11
pH: B, HI 96710-11
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.
CALIBRATION
Note: It is possible to interrupt the calibra-
tion 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
calibration mode.
show “CAL” during calibration procedure.
The blinking “ZERO” asks for instrument
zeroing.
5• Place the CAL CHECK™ Standard 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 specific CAL CHECKTM Standard
Cuvette B into the cuvette holder, for:
Hardness: B, HI 96719-11
pH: B, HI 96710-11
Ensure that the notch on the cap is
positioned securely into the groove.
The display will
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9
Calibration
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5
6-7
9
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 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.:
“01.08.2009”) 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.
13•Press RANGE/GLP/ to edit the desired
year (2009-2099). If the key is kept pressed,
the year number is automatically 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
measurement mode
on the LCD.
by displaying dashes
GLP
In
GLP mode
, the last calibration date can be verified and the factory
calibration can be restored.
LAST CALIBRATION DATE
1• Press and hold RANGE/GLP/ for three
seconds to enter
GLP mode
month and day will appear on the main
display and the year on the secondary display.
2• If no calibration was performed, the factory
calibration message, “F.CAL” will appear on
the main display and the instrument returns
to
measurement mode
. The calibration
after three seconds.
10-11
12-14
15-16
17
18
19
1
2
or
or
Last
Calibration
Date
FACTORY CALIBRATION RESTORE
It is possible to delete the calibration and restore
factory calibration.
1• Press and hold RANGE/GLP/ for three
seconds to enter
GLP mode
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 RANGE/GLP/
again to abort factory calibration restore.
4• The instrument briefly indicates “donE”
upon restoration of factory calibration prior
to returning to
.
measurement mode
.
2
3-4
Factory
Calibration
Restore
Battery management
To save the battery, the instrument shuts down after 10 minutes of nonuse in
measurement mode
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 “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
Accessories
REAGENT SETS
HI 93719-01 Reagents for 100 Hardness tests
HI 93719-03 Reagents for 300 Hardness tests
HI 93710-01 Reagents for 100 pH tests
HI 93710-03 Reagents for 300 pH tests
OTHER ACCESSORIES
HI 96719-11 CAL CHECKTM Standard Cuvettes for Hardness (1 set)
(equivalent with 1.00 mg/L Mg Hardness)
HI 96710-11 CAL CHECKTM Standard Cuvettes for pH (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
HI 93703-50 Cuvette cleaning solution (230 mL)
Warranty
HI 96736 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
without advance notice.
For additional information, contact your
dealer or the nearest
Hanna Customer Service Center.
To find the Hanna Office in your area,
IST96736 11/10A
visit our web site
www.hannainst.com
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