5-6
4, 9
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
INSTRUCTION MANUAL
HI 96762
HI 96762
HI 96762
HI 96762
HI 96762
Free Chlorine Meter
for Drinking Water
Application
Preliminary examination
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.
Functional description
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
“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.
Standard Low:
The standard reading is less
than expected.
Standard High:
The standard reading is higher
than expected.
Errors and warnings
Measurement procedure
Measurement
ON ZERO READING
ON SAMPLE READING
DURING CALIBRATION PROCEDURE
OTHER ERRORS AND WARNINGS
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.
Cap error:
Appears when external light enters
in the analysis cell. Assure that the cuvette cap
is present.
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”.
1)
GLP/
: press to enter
GLP mode. In calibration mode press to edit
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
calibration mode.
3)
ZERO/CFM
: to zero the meter prior to measurement, to confirm edited
values or to confirm factory calibration restore.
4)
READ/ /TIMER
: In
measurement mode, press to make a measurement,
or press and hold for three seconds to start a pre-programmed
countdown prior to measurement. In
GLP mode press to view the next
screen.
5)
ON/OFF
: to turn the meter on and off.
6) Liquid Crystal Display (LCD).
7) Cuvette alignment indicator.
8) Cuvette holder.
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.
2
3
8
10
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-
ence filter @ 525 nm
Method
Adaptation of the Standard Method
4500-Cl G.
Environment
0 to 50°C (32 to 122°F);
max 95% RH non-condensing.
Battery Type
1 x 9 volt
Auto-Shut off
After 10' of non-use in
measurement mode;
after 1 hour of non-use in
calibration mode;
with last reading reminder.
Dimensions
192 x 104 x 69 mm (7.6 x 4.1 x 2.7”)
Weight
360 g (12.7 oz.).
99 Washington Street
Melrose, MA 02176
Phone
781-665-
1400
Toll Free 1-800-517-8431
