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 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
dead
dead
dead
dead”
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 RESET
It is possible to restore the factory calibration.
1•
Press
GLP/
to enter
GLP mode
.
R
EAGENT SETS
HI 96770-01
Reagents for 100 SILICA HIGH RANGE tests
HI 96770-03
Reagents for 300 SILICA HIGH RANGE tests
OTHER ACCESSORIES
HI 96770-11
CAL CHECK™ Standard Cuvets (1 set)
HI 721310
9V battery (10 pcs)
HI 731318
Tissue for wiping cuvets (4 pcs)
HI 731331
Glass cuvets (4 pcs)
HI 731335
Caps for cuvets (4 pcs)
HI 93703-50
Cuvets cleaning solution (230 mL).
2•
Press
READ /TIMER
to enter in the
factory calibration restore screen. The
instrument asks for confirmation before
deleting the last calibration.
3•
Press
ZERO/CFM
to restore the factory
calibration or press
GLP/
again to
abort factory calibration restore.
4•
The instrument briefly notifies “
done”
when
restores factory calibration and returns to
measurement mode
.
LAST CALIBRATION DATE
1•
Press
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.
12•
Press
GLP/
to edit the desired year
(2000-2099). 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.
3
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™ cuvets (see
“Accessories”) to validate or calibrate
instruments.
Validation and Calibration procedures
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
Cuvet A into the cuvet holder and ensure
that the notch on the cap is positioned securely
into the groove.
4•
Press
ZERO/CFM
and the instrument status
indicator 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 cuvet.
7•
Place the
CAL CHECK™
Standard
HI 96770-11
Cuvet B into the cuvet
holder and ensure that the notch on the
cap is positioned securely into the groove.
8•
Press
CAL CHECK
key and the instrument
status indicator together with
“CAL
CHECK”
will appear, 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.
Validation
Calibration
If the value is found out of specifications,
please check that the cuvets are free of
fingerprints, oil or dirt and repeat
validation. If results are still found out of
specifications then recalibrate the
instrument.
GLP
Battery management
Warranty
HI 96770
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
CALIBRATION
Note:
It is possible to interrupt the
calibration procedure at any time
by pressing
CAL CHECK
or
ON/OFF
.
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
calibration mode.
The display will
show
“CAL”
during calibration procedure.
The blinking
“ZERO”
asks for instrument
zeroing.
4•
Place the
CAL CHECK™
Standard Cuvet A
into the cuvet holder and ensure that the
notch on the cap is positioned securely into
the groove.
6•
Press
ZERO/CFM
and the instrument status
indicator 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 cuvet.
9•
Place the
CAL CHECK™
Standard
HI 96770-11
Cuvet B into the cuvet
holder and ensure that the notch on the
cap is positioned securely into the groove.
10•
Press
READ /TIMER
and the instrument
status indicator 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
HI 96770-11
Cuvets, A
and B are free from fingerprints
or dirt and that they are inserted
correctly.
Then the date of last calibration (e.g.:
“01.08.2005”
) appears on the display,
or
“01.01.2005”
if the factory calibration
was selected before. In both cases the year
number is blinking, ready for date input.
IST96770R1 02/07
4-5
7
8
3
4
6-7
9
10-11
12-13
or
14-15
or
16
17
18
Last
Calibration
Date
In
GLP mode
, the last calibration date can be consulted and the factory
calibration can be restored.
1
2
2
3-4
Accessories:
13•
Wait for 2 minutes and then press
READ
READ
READ
READ
READ /TIMER
/TIMER
/TIMER
/TIMER
/TIMER
.
The instrument status indicator will appear
depending on the measurement phase.
The instrument directly displays
concentration in mg/L of silica (SiO
2
) on
the LCD.
To convert the reading to mg/L of silicon
(Si) multiply the reading by 0.467.
14•
1
9
Factory
Calibration
Reset
13
INTERFERENCES
• Iron (Fe
2+
and Fe
3+
) interferes at high levels.
• Sulfide (S
2-
) interferes at high levels.
• Phosphates does not interfere up to 50 mg/L PO
4
3-
.
Read the relevant SDS sheets before performing the test.
Safety Data Sheets are available at: www.hannainst.com
Safety Data Sheets