Hanna Instruments HI 96762 User Manual

INSTRUCTION MANUAL
HI 96762HI 96762
HI 96762
HI 96762HI 96762
Free Chlorine Meter
for Drinking Water
Application
www.hannainst.com
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 tech@hannainst.com.
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 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”.
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-
Method Adaptation of the Standard Method
Environment 0 to 50°C (32 to 122°F);
Battery Type 1 x 9 volt Auto-Shut off After 10' of non-use in
Dimensions 192 x 104 x 69 mm (7.6 x 4.1 x 2.7”) Weight 360 g (12.7 oz.).
ence filter @ 525 nm
4500-Cl G.
max 95% RH non-condensing.
measurement mode
after 1 hour of non-use in with last reading reminder.
calibration mode
;
;
Functional description
1) GLP/ : press to enter 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
3) ZERO/CFM: to zero the meter prior to measurement, to confirm edited values or to confirm factory calibration restore.
4) READ/ /TIMER: In or press and hold for three seconds to start a pre-programmed countdown prior to measurement. In screen.
5) ON/OFF: to turn the meter on and off.
6) Liquid Crystal Display (LCD).
7) Cuvette alignment indicator.
8) Cuvette holder.
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
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
GLP mode
. In
measurement mode
calibration mode
calibration mode
, press to make a measurement,
GLP mode
press to edit
.
press to view the next
Errors and warnings
ON ZERO READING
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.
ON SAMPLE READING
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.
DURING CALIBRATION PROCEDURE
Standard Low: The standard reading is less than expected.
Standard High: The standard reading is higher than expected.
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.
Measurement procedure
Measurement
2
3
4, 9
5-6
8
10
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.
INTERFERENCES
• Alkalinity: above 1,000 mg/L CaCO3 if present as bicarbonate (HCO above 25 mg/L CaCO3 if present as carbonate
2-
(CO
, sample pH > 9.0). In both cases, it
3
will not reliably develop the full amount of color or it may rapidly fade (negative error). To resolve this, neutralize the sample with diluted HCl.
• Acidity: above 150 mg/L CaCO3. May not reliably develop the full amout of color or it may rapidly fade (negative error). To resolve this, neutralize the sample with diluted NaOH.
• Hardness: in case of water with hardness greater than 500 mg/L CaCO3, shake the sample for approximately 2 minutes after adding the powder reagent.
• Bromine (Br2), Chloride dioxide (ClO2), Iodine
(I2), Oxidized Manganese and Chromium,
Ozone (O3): positive error.
sample pH < 8.3);
3
or
11
Validation and Calibration procedures
Warning: do not validate or calibrate the instrument with standard solutions other than the Hanna CAL CHECK™ Standards, otherwise erroneous results will be obtained.
Use the Hanna CAL CHECK™ cuvettes (see “Accessories”) to validate or calibrate instruments.
Validation
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
HI 96762-11 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 CAL CHECK™ Standard
HI 96762-11 Cuvette B into the cuvette holder 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.
3
4-5
7
8
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.
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 display will show “CAL” during calibration procedure. The blinking “ZERO” asks for instrument zeroing.
4• Place the CAL CHECK™ Standard
HI 96762-11 Cuvette A 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 calibration. The blinking “READ” asks for reading calibration standard.
7• Remove the cuvette. 8• Place the CAL CHECK™ Standard
HI 96762-11 Cuvette B into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove.
9• Press READ/ /TIMER and the lamp,
cuvette and detector icons will appear on the display, depending on the measurement phase.
10•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 96762-11 Cuvettes, A and B are free from fingerprints or dirt and that they are inserted correctly.
calibration mode.
The
9
Calibration
3
4
5-6
8
9-10
11• 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.
12•Press GLP/ to edit the desired year
(2009-2099). 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.
GLP
In the
GLP mode
calibration can be restored.
LAST CALIBRATION DATE
1• Press GLP/ to enter
2• If no calibration was performed, the factory
, the last calibration date can be verified and the factory
GLP mode
. The calibration month and day will appear on the main display and the year on the secondary display.
calibration message, “F.CAL” will appear on the main display and the instrument returns to
measurement mode
after three
seconds.
11-13
14-15
16
17
18
1
2
or
or
Last
Calibration
Date
FACTORY CALIBRATION RESTORE
It is possible to delete the calibration and restore factory calibration.
1• Press GLP/ to enter
GLP mode
.
Calibration
2
Factory
Restore
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 GLP/ again to
3-4
abort factory calibration restore.
4• The instrument briefly indicates “donE”
upon restoration of factory calibration prior to returning to
measurement mode
.
Battery management
To save battery, the instrument shuts down after 10 minutes of non-use in
measurement 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
anymore, 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.
and after 1 hour of non-use in
calibration mode.
Accessories:
REAGENT SETS
HI 95762-01 Reagents for 100 tests HI 95762-03 Reagents for 300 tests
OTHER ACCESSORIES
HI 96762-11 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).
Warranty
HI 96762 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
IST96762 01/11
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
www.hannainst.com
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