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Summary of Contents for Hanna Instruments HI 96728C
- Page 1 Instruction Manual HI 96728C Nitrate ISM Distributed By: ® Industry Leader in RO Expertise and Membrane Applications since 1983™ 2450 Business Park Dr., Vista, CA 92081 (760) 727-3711 (760) 727-4427 www.appliedmembranes.com sales@appliedmembranes.com...
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Page 2: Table Of Contents
BATTERY MANAGEMENT ....................21 BATTERY REPLACEMENT ....................22 ACCESSORIES ........................22 WARRANTY ........................23 All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner, Hanna Instruments Inc., Woonsocket, Rhode Island, 02895 , USA. -
Page 3: Preliminary Examination
Distributed by Applied Membranes, Inc. www.appliedmembranes.com PRELIMINARY EXAMINATION Please examine this product carefully. Make sure that the instrument is not damaged. If any damage occurred during shipment, please notify your Dealer. Each HI 96728 Ion Selective Meter is supplied complete with: •... -
Page 4: General Description
Distributed by Applied Membranes, Inc. www.appliedmembranes.com GENERAL DESCRIPTION The HI 96728 is an auto diagnostic portable microprocessor meter that benefits from Hanna’s years of experience as a manufacturer of analytical instruments. It has the advanced optical system based on a special Tungsten Lamp and a narrow band interference filter that allows most accurate and repeatable readings. -
Page 5: Specifications
Distributed by Applied Membranes, Inc. www.appliedmembranes.com SPECIFICATIONS Range 0.0 to 30.0 mg/L Resolution 0.1 mg/L Accuracy ±0.5 mg/L ±10% of reading@ 25°C Typical EMC Deviation ±0.1 mg/L Tungsten lamp Light Source Light Detector Silicon Photocell with narrow band interference filter @ 525 nm Method Adaptation of the cadmium reduction method. -
Page 6: Principle Of Operation
Distributed by Applied Membranes, Inc. www.appliedmembranes.com PRINCIPLE OF OPERATION Absorption of Light is a typical phenomenon of interaction between electromagnetic radiation and matter. When a light beam crosses a substance, some of the radiation may be absorbed by atoms, molecules or crystal lattices. If pure absorption occurs, the fraction of light absorbed depends both on the optical path length through the matter and on the physical-chemical characteristics of the substance according to the Lambert-Beer Law:... -
Page 7: Functional Description
Distributed by Applied Membranes, Inc. www.appliedmembranes.com A microprocessor controlled special tungsten lamp emits radiation which is first optically conditioned and beamed to the sample contained in the cuvette. The optical path is fixed by the diameter of the cuvette. Then the light is spectrally filtered to a narrow spectral bandwidth, to obtain a light beam of intensity I or I. - Page 8 Distributed by Applied Membranes, Inc. www.appliedmembranes.com KEYPAD DESCRIPTION • ON/OFF: to turn the meter on and off. • ZERO/CFM: this is a bi-functional key. Just press to zero the meter prior to measurement, or confirm edited values. In calibration mode press to confirm factory calibration restore. •...
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Page 9: Errors And Warnings
Distributed by Applied Membranes, Inc. www.appliedmembranes.com ERRORS AND WARNINGS The instrument shows clear messages when erroneous condition appears. Messages are also displayed when the obtained values are outside expected range. The beeper is playing a beep on errors. a) on zero reading Light High: There is too much light to perform a measurement. - Page 10 Distributed by Applied Membranes, Inc. www.appliedmembranes.com 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. c) during calibration procedure Standard Low: The standard reading is less than expected.
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Page 11: General Tips For An Accurate Measurement
Distributed by Applied Membranes, Inc. www.appliedmembranes.com GENERAL TIPS FOR AN ACCURATE MEASUREMENT The instructions listed below should be carefully followed during testing to ensure best accuracy. • Color or suspended matter in large amounts may cause interference, therefore these should be removed by treatment with active carbon and by prior filtration. -
Page 12: Startup
Distributed by Applied Membranes, Inc. www.appliedmembranes.com • After the reading it is important to discard immediately the sample, otherwise the glass might become permanently stained. • All the reaction times reported in this manual are referred to 20°C (68°F). As a general rule of thumb, they should be doubled at 10°C (50°F) and halved at 30°C (86°F). - Page 13 Distributed by Applied Membranes, Inc. www.appliedmembranes.com • Place the cuvette into the cuvette 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.
- Page 14 Distributed by Applied Membranes, Inc. www.appliedmembranes.com • Alternatively, wait for 3 minutes then just press READ/ /TIMER. In all cases, the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase. • At the end of measurement, the instrument directly displays concentration in mg/L of nitrate-nitrogen on the LCD.
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Page 15: Validation Procedure
Distributed by Applied Membranes, Inc. www.appliedmembranes.com VALIDATION PROCEDURE Use the validation procedure to ensure that the instrument is properly calibrated. Warning: Do not validate the instrument with any standard solutions other than the HANNA CAL CHECK Standards, otherwise erroneous results will be obtained. •... - Page 16 Distributed by Applied Membranes, Inc. www.appliedmembranes.com • Press CAL CHECK and the lamp, cuvette and detector icons together with “CAL CHECK” will appear on the display, depending on the measurement phase. • At the end of the measurement the display will show the validation standard value.
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Page 17: Calibration Procedure
Distributed by Applied Membranes, Inc. www.appliedmembranes.com CALIBRATION PROCEDURE Note: It is possible to interrupt calibration procedure at any time by pressing CAL CHECK or ON/OFF keys. Warning: Do not calibrate the instrument with standard solutions other than the HANNA CAL CHECK Standards, otherwise erroneous results will be obtained. - Page 18 Distributed by Applied Membranes, Inc. www.appliedmembranes.com • 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. • Remove the cuvette. • Place the CAL CHECK Standard HI 96728-11 Cuvette B into the cuvette holder and ensure that the notch on the...
- Page 19 Distributed by Applied Membranes, Inc. www.appliedmembranes.com DATE INPUT • Press GLP/ to edit the desired year (2009-2099). If the key is kept pressed, the year number is automatically increased. • When the correct year has been set, press ZERO/CFM or READ/ /TIMER to confirm.
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Page 20: Glp
Distributed by Applied Membranes, Inc. www.appliedmembranes.com • The instrument will return automatically to measurement mode by displaying dashes on the LCD. In GLP mode, the last calibration date can be verified and the factory calibration can be restored. LAST CALIBRATION DATE To display the calibration date: •... -
Page 21: Battery Management
Distributed by Applied Membranes, Inc. www.appliedmembranes.com • Press READ/ /TIMER to enter in the factory calibration restore screen. The instrument asks for confirmation of user calibration delete. • Press ZERO/CFM to restore the factory calibration or press GLP/ again to abort factory calibration restore. -
Page 22: Battery Replacement
Distributed by Applied Membranes, Inc. www.appliedmembranes.com BATTERY REPLACEMENT 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. •... -
Page 23: Warranty
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. - Page 24 Distributed By: ® Industry Leader in RO Expertise and Membrane Applications since 1983™ 2450 Business Park Dr., Vista, CA 92081 (760) 727-3711 (760) 727-4427 www.appliedmembranes.com sales@appliedmembranes.com Printed in EUROPE (ROMANIA) MAN96728 01/11...
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