Hanna Instruments HI 96771 User Manual

Page 2

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FACTORY CALIBRATION RESTORE

It is possible to delete the calibration and
restore factory calibration.

1• Press and hold for three seconds

RANGE/GLP/

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.

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 the measurement mode by displaying
dashes on the LCD.

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.

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

HI96771-11

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

Standard

HI96771-11

Cuvette B into the cuvette

holder, for and ensure that the notch on
the cap is positioned securely into the groove.

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 HI96771-11

Cuvettes, A and B are free from fingerprints

LAST CALIBRATION DATE

1• Press RANGE/GLP/ 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.

In the

GLP mode, the last calibration date can be verified and the factory

calibration can be restored.

To save 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 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 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.

EAGENT SETS

HI 93701-01

Reagents for 100 Free Chlorine tests

HI 93701-03

Reagents for 300 Free Chlorine tests

HI 95771-01

Reagents for 100 Chlorine Ultra High Range tests

HI 95771-03

Reagents for 300 Chlorine Ultra High Range tests

OTHER ACCESSORIES

HI 96771-11

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).

Battery management

Warranty

HI 96771

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,

visit our web site

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

IST96771 11/10

15-16

Factory

Calibration

Restore

Accessories

Calibration

GLP

Last

Calibration

Date

12•The instrument directly displays concentration

in mg/L of free chlorine and the range
number on the LCD.

INTERFERENCES FOR CHLORINE LR
• Positive error: Bromine, Oxidized Manganese and

Chromium, Chlorine dioxide, Ozone and Iodine.

• Alkalinity above 250 mg/L CaCO

or acidity

above 150 mg/L CaCO

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

, shake the sample for

approximately 2 minutes after adding the
powder reagent.

INTERFERENCES FOR CHLORINE UHR
• Positive error: Bromine, Oxidized Manganese

and Chromium, Chlorine dioxide, Ozone and
Iodine.

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).

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

HI96771-11

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 specific CAL CHECK

Standard

HI96771-11

Cuvette B into the cuvette

holder, for 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.

Validation

3”

Use the Hanna CAL CHECK™ cuvettes (see
“Accessories”) to validate or calibrate instruments.

3-4

13-14

6-7

10-11

4-5

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