Note:Save all packing material until you are sure that the instrument works correctly. Any defective item must be returned in its original packing. 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.
GENERAL DESCRIPTION SPECIFICATIONS Range 0 to 200 mg/L (as SiO The HI 96770 is an auto diagnostic portable microprocessor meter that benefits from Hanna’s Resolution 1 mg/L years of experience as a manufacturer of analytical instruments. It has the advanced optical Accuracy ±1 mg/L ±5% of reading @ 25°C system based on a special tungsten lamp and a narrow band interference filter that allows most...
A microprocessor controlled special tungsten lamp emits radiation which is first optically PRINCIPLE OF OPERATION 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 Absorption of Light is a typical phenomenon of interaction between electromagnetic radiation and obtain a light beam of intensity I or I.
KEYPAD DESCRIPTION ERRORS AND WARNINGS • 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, The instrument shows clear messages when erroneous condition appears. Messages are also displayed or to confirm edited values.
Battery low: The battery must be replaced soon. Under range: A blinking “0.00” 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. Dead battery: This indicates that the battery is dead and must be replaced.
• It is important that the sample does not contain any debris. STARTUP This would corrupt the reading. Prepare the instrument for measurement as follows: • In order to avoid reagent leaking and to obtain more • Unpack the instrument by removing the dust protection sleeve from the instrument cuvette holder. accurate measurements, it is recommended to close the •...
• Press ZERO/CFM and the lamp, cuvette • Wait for 2 minutes and then press READ/ /TIMER. The the lamp, cuvette and detector icons will appear on the and detector icons will appear depending display, depending on the measurement on the measurement phase. phase.
• Place the CAL CHECK Standard HI 96770-11 CALIBRATION PROCEDURE Cuvette A into the cuvette holder and ensure that the notch on the cap is positioned securely Note: It is possible to interrupt calibration procedure at any time by pressing CAL CHECK or into the groove.
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• After a few seconds the display will show DATE INPUT “-0.0-”. The meter is now zeroed and ready • Press GLP/ to edit the desired year for calibration. The blinking “READ” asks for (2000-2099). If the key is kept pressed, reading calibration standard.
• The instrument will return automatically • Press READ/ /TIMER to enter in the to the measurement mode by displaying factory calibration restore screen. The dashes on the LCD. 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.
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.
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Hanna Instruments Inc. Highland Industrial Park 584 Park East Drive Woonsocket, RI 02895 USA Technical Support for Customers Tel. (800) 426 6287 Fax (401) 765 7575 E-mail tech@hannainst.com www.hannainst.com Local Sales and Customer Service Office Printed in EUROPE MAN96770 01/11...
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