Hanna Instruments HI 96736-24 - Manual

INSTRUCTION MANUAL
HI 96736 HI 96736 HI 96736 HI 96736 HI 96736
Hardness
and pH
ISM
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 instru-
ment is not damaged. If any damage occured during shipment,
please notify your Dealer.
Each HI 96736 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].
Technical specifications:
Range Mg Hardness 0.00 to 2.00 mg/L
Ca Hardness 0.00 to 2.70 mg/L
Total Hardness 0.00 to 4.70 mg/L
pH 6.5 to 8.5
Resolution 0.01 mg/L Hardness
0.1 pH
Accuracy
Mg Hardness ±0.11 mg/L ±5% of reading @ 25°C
Ca Hardness ±0.11 mg/L ±5% of reading @ 25°C
pH ±0.1 pH @ 25°C
Typical EMC Dev. ±0.02 mg/L Mg Hardness
±0.02 mg/L Ca Hardness
±0.1 pH
Light Source Tungsten lamp
Light Detector Silicon Photocell with narrow band interference
filter @ 525 nm
Method For hardness: Adaptation of the Standard Methods for the
Examination of Water and Wastewater, 18 th Edition, colo-
rimetric method. The reaction between Mg/Ca and reagents
causes a violet tint in the sample.
For pH: Phenol red method. The reaction with reagents
causes a red tint in the sample.
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.).
1. RANGE/GLP/ key: press to change the paramter, press and
hold for three seconds to enter GLP mode. In calibration mode
press to edit the date and time.
2. CAL CHECK key: press to perform the validation of the meter,
or press and hold for three seconds to enter calibration mode.
3. ZERO/CFM key: press to zero the meter prior to measurement,
to confirm edited values or to confirm factory calibration
restore.
4. READ/ /TIMER key: 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 key: to turn the meter on and off.
6. Liquid Crystal Display (LCD)
7. Cuvette alignment indicator
8. Cuvette holder
DISPLAY ELEMENTS DESCRIPTION:
Functional 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 change state level 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
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.
Errors and warnings:
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.
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.
Standard Low: The standard reading is
less than expected.
Standard High: The standard reading is
higher than expected.
Inverted cuvettes: The sample and the
zero cuvette are inverted.
Zero: A zero reading was not taken. Fol-
low the instructions of the measurement
procedure for zeroing the meter.
Under range:
A blinking value of the
minimum concentration 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.
1• Turn the meter on by pressing ON/OFF.
2• When the beeper sounds briefly and the
LCD displays dashes and “P1” (Total
Hardness) and “P2” (pH) the meter is
ready. The code that appears on the
secondary display is the one of the last
selected parameter. If necessary, press
RANGE/GLP/ to change parameter.
The blinking “ZERO” indicates that the
instrument needs to be zeroed first.
3• For Total Hardness: Fill a graduated
beaker up to the 50mL mark with the
sample. Add 0.5 mL of HI 93719A-0
Calcium And Magnesium Reagent indicator
solution and mix.
Add 0.5 mL of HI 93719B-0 Alkali solution
for Calcium and Magnesium and mix. Fill
three cuvettes with 10mL of sample each.
Add 1 drop of HI 93719C-0 EDTA solution
to one cuvette, replace the cap and swirl
the solution. This is the ZERO sample.
Add 1 drop of HI 93719D-0 EGTA solution
to the second cuvette, replace the cap
and swirl the solution. This is the READ1
sample.
For pH: Fill the cuvette with 10 mL of
unreacted sample, up to the mark, and
replace the cap.
4• Place the cuvette into the 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.
For Total Hardness: Place the ZERO sample
into the holder and ensure that the
notch on the cap is positioned securely
into the groove. Press ZERO/CFM and
the lamp, cuvette and detector icons will
appear on the display, depending on the
measurement phase. After a few seconds
the display will show “-0.0-”. Remove
the ZERO sample and insert the READ1
sample into the instrument. 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 30 seconds. The
lamp, cuvette and detector icons will appear
on the display, depending on the
measurement phase, then the instrument
will display the level of Magnesium
hardness in mg/L CaCO
3
(togheter with
“n”).
6• After a few seconds the display will show
“-0.0-” . The meter is now zeroed and
ready for measurement (except for
Hardness).
7• Remove the cuvette.
8• Add the specific test reagent for each
parameter:
Total hardness: the third cuvette (nothing
is added)
pH: 5 drops of HI 93710-0
9• Replace the cap and swirl the solution:
for pH invert several times to mix.
10•Replace the cuvette into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
Measurement procedure:
Measurement
2
5-6
4
10
3
#1
#1
#2
#2
#3
8-9