Hanna Instruments HI 96744 - Manual (Page 2)

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).
10•Press and hold READ/ /TIMER for three
seconds . The display will show the countdown
prior to measurement (not for Hardness).
The beeper is playing a beep at the end of
countdown period.
Alternatively, wait for:
Iron LR:
30 seconds
Then press READ/ /TIMER.
For pH and Hardness press READ/ /
TIMER
directly.
In all cases the lamp, cuvette and detector
icons will appear on the display, depending
on the measurement phase.
11•The instrument directly displays the pH
measured value or the concentration in
mg/L of free chlorine, total chlorine or iron
on the LCD, depending on the selected
parameter.
For Hardness the instrument will display the concentration of
Calcium in mg/L CaCO
3
(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 CaCO
3 (together with ‘’t’’).
INTERFERENCES:
• Iron LR: Cadmium above 4.0 mg/L, Chromin6+ above 1.2 mg/L,
Copper above 0.6 mg/L, Manganese above 50.0 mg/L, Molybdenum
4.0 mg/L, Nitrite ion above 0.8 mg/L, Chromium3+ above 0.25
mg/L, Cobalt above 0.05 mg/L, Cyanide above 2.8 mg/L, Mercury
above 0.4 mg/L, Nickel above 1.0 mg/L.
• 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.
Use the Hanna CAL CHECK™ cuvettes (see
“Accessories”) to validate or calibrate instruments.
Validation and Calibration procedures
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.
Validation
11
8
Calibration 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. The display will
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 CHECK
TM Standard
Cuvette B into the cuvette holder, for:
pH: B, HI 96710-11
Hardness: B, HI 96719-11
Iron LR: B, HI 96746-11
Ensure that the notch on the cap is
positioned securely into the groove.
4
5
9
6• Remove the cuvette.
7• Place the specific CAL CHECK
TM Standard
Cuvette B into the cuvette holder, for:
pH: B, HI 96710-11
Hardness: B, HI 96719-11
Iron LR: B, HI 96746-11
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.
LAST CALIBRATION DATE
1• Press and hold RANGE/GLP/ for three
seconds to enter GLP mode. The calibration
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 after three seconds.
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 by displaying dashes
on the LCD.
GLP
12-14
or
15-16
or
17
18
19
Last
Calibration
Date
In GLP mode, the last calibration date can be verified and the factory
calibration can be restored.
1
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.
Battery management
To save the battery, the instrument shuts down after 10 minutes of non-
use in
measurement mode and after 1 hour of non-use in calibration
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.
Factory
Calibration
Restore
R EAGENT SETS
HI 93710-01 Reagents for 100 pH tests
HI 93710-03 Reagents for 300 pH tests
HI 93719-01 Reagents for 100 Hardness tests
HI 93719-03 Reagents for 300 Hardness tests
HI 93746-01 Reagents for 100 Iron Low Range tests
HI 93746-03 Reagents for 300 Iron Low Range tests
OTHER ACCESSORIES
HI 96710-11 CAL CHECK
TM Standard Cuvettes for pH (1 set)
HI 96719-11 CAL CHECK TM Standard Cuvettes for Hardness (1 set)
(equivalent with 1.00 mg/L Mg Hardness)
HI 96746-11 CAL CHECK TM Standard Cuvettes for Iron LR (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 96744 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 Depart-
ment 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,
visit our web site
w w w . h a n n a i n s t . c o m
IST96744 11/10
Accessories
2
10-11
6-7
7
or
9
3
4-5
2
10
3-4