Hanna Instruments HI 96761 - Manual

DISPLAY ELEMENTS DESCRIPTION:
INSTRUCTION MANUAL
HI 96761 HI 96761 HI 96761 HI 96761 HI 96761
Total Chlorine Meter
for the analysis of
trace Total Chlorine
concentrations
w w w . h a n n a i n s t . c o m
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 96761 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”.
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 [email protected]. Functional description Errors and warnings:
Measurement procedure
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
ON ZERO READING:
ON SAMPLE READING:
DURING CALIBRATION PROCEDURE:
OTHER ERRORS AND WARNINGS:
Cap error: Appears when external light enters
in the analysis cell. Assure that the cuvette cap
is present.
KEYPAD DESCRIPTION
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 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: 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 95761-0
Total Chlorine Low Range 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 2 minutes and 30
seconds 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
total chlorine on the LCD.
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5-6
Measurement
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3
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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.
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.
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
cuvettes are inverted.
Zero: A zero reading was not taken. Follow
the instructions of the measurement procedure
for zeroing the meter.
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Technical specifications:
Range 0.000 to 0.500 mg/L
Resolution 0.001 mg/L
Accuracy ±0.020 mg/L ±3% of reading at 25°C
Typical EMC Deviation ±0.001 mg/L
Light Source Tungsten lamp
Light Detector Silicon Photocell with narrow band in-
terference filter @ 525 nm
Method Adaptation of the EPA recommended
method 330.5.
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.).
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