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Hanna Instruments HI96704C Instruction Manual
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Hanna Instruments HI96704C Instruction Manual

Hydrazine ism
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HI96704C
Hydrazine ISM

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Summary of Contents for Hanna Instruments HI96704C

  • Page 1 HI96704C Hydrazine ISM...
  • Page 2 Hanna Instruments representative near you at www.hannainst.com. 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 ....................GENERAL DESCRIPTION ......................ABBREVIATIONS ........................SPECIFICATIONS ........................PRECISION AND ACCURACY ....................PRINCIPLE OF OPERATION..................... FUNCTIONAL DESCRIPTION ....................ERRORS AND WARNINGS ...................... GENERAL TIPS FOR AN ACCURATE MEASUREMENT ..............STARTUP ..........................MEASUREMENT PROCEDURE ....................VALIDATION PROCEDURE ...................... CALIBRATION PROCEDURE ..................... GLP .............................
  • Page 4 Please examine this product carefully. Make sure that the instrument is not damaged. If any damage occurred during shipment, please contact your local Hanna Instruments Office. Each HI96704 Ion Selective Meter is supplied complete with: • Sample Cuvettes and Caps (2 pcs.) •...
  • Page 5 HI96704 is an auto diagnostic portable microprocessor meter that benefits from Hanna Instruments’ years of experience as a manufacturer of analytical instruments. It has the advanced optical system based on a special Light Emitting Diode (LED) and a narrow band interference filter that allows most accurate and repeatable readings.
  • Page 6 Range 0 to 400 µg/L Resolution 1 µg/L Accuracy ±3% of full scale Light Source Light Emitting Diode Light Detector Silicon Photocell with narrow band interference filter @466 nm Adaptation of the ASTM Manual of Water and Environmental Tech- nology, method D1385 for natural and treated water. The reaction Method between hydrazine and the liquid reagent causes a yellow tint in the sample.
  • Page 7 The optical system of Hanna Instruments’ HI96’ colorimeter is based on special subminiature LED and narrow-band interference filters to guarantee both high performance and reliable results.
  • Page 8 A microprocessor controlled special LED 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 9 INSTRUMENT DESCRIPTION HYDRAZINE 1) GLP/ key 5) ON/OFF key 2) CAL CHECK key 6) Liquid Crystal Display (LCD) 3) ZERO/CFM key 7) Cuvette alignment indicator 4) READ /TIMER key 8) Cuvette holder KEYPAD DESCRIPTION • ON/OFF: to turn the meter on and off. •...
  • Page 10 OPERATING MODES • Measurement mode: default operation mode, enables both validation and measurement. • Calibration mode: may be entered by keeping CAL CHECK pressed for three seconds (the “CAL” tag appears), it enables calibration of the instrument. • GLP mode may be entered by pressing GLP/ (“GLP” appears), it enables consulting of user calibration date or restore factory calibration.
  • Page 11 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. Please check the preparation of the zero cuvette.
  • Page 12 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. Standard High: The standard reading is higher than expected.
  • Page 13 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. • For a correct filling of the cuvette: the liquid in the cuvette forms a concavity on the top;...
  • Page 14 • Shaking the cuvette can generate bubbles in the sample, causing higher readings. To obtain accurate measurements, remove such bubbles by swirling or by gently tapping the cuvette. • Do not let the reacted sample stand too long after reagent is added, or accuracy will be lost. •...
  • Page 15 To compensate the meter for the sample turbidity or color, the measurement takes place in two phases. First, the meter is zeroed using the unreacted sample. After the reagents are added the reacted sample is measured. • Turn the meter on by pressing ON/OFF. The display briefly shows all tags on. •...
  • Page 16 • Place the blank into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove. • 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 12 minutes then just press ZERO/CFM.
  • Page 17 • Remove the blank. • Insert the cuvette with the reacted sample into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove. • Press READ /TIMER and the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase.
  • Page 18 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 Instruments CAL Check Standards, otherwise erroneous results will be obtained. • Turn the meter on by pressing ON/OFF.
  • Page 19 • After a few seconds, the display will show “-0.0-”. The meter is now zeroed and ready for validation. • Remove the cuvette. • Place the CAL Check Standard HI96704-11 Cuvette B into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove. 96704 •...
  • Page 20 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 Instruments CAL Check Standards, otherwise erroneous results will be obtained.
  • Page 21 • 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-”. The meter is now zeroed and ready for calibration. The blinking “READ” asks for reading calibration standard. •...
  • Page 22 • After measurement 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 Standards HI96704-11 Cuvettes, A and B are free from fingerprints or dirt and that they are inserted correctly.
  • Page 23 • Press GLP/ to edit the desired month (01-12). If the key is kept pressed, the month number is automatically increased. • When the correct month has been set, press ZERO/CFM or READ /TIMER to confirm. Now the display will show the day blinking. •...
  • Page 24 In the GLP mode, the last user calibration date can be consulted and the factory calibration can be restored. LAST CALIBRATION DATE To display the calibration date: • Press GLP/ to enter GLP mode. The calibration month and day will appear on the main display and the year on the secondary display.
  • Page 25 • Press ZERO/CFM to restore the factory calibration or press GLP/ again to abort factory calibration restore. • The instrument briefly notifies “done” when restores factory calibration and returns to measurement mode. To save battery, the instrument shuts down after 10 minutes of non-use in measurement mode and after 1 hour of non-use in calibration mode.
  • Page 26 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 27 To validate your warranty, fill out and return the enclosed warranty card within 14 days from the date of purchase. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice.
  • Page 28 World Headquarters Hanna Instruments Inc. Highland Industrial Park 584 Park East Drive Woonsocket, RI 02895 USA www.hannainst.com Local Office Hanna Instruments USA 270 George Washington Highway Smithfield, RI 02917 Phone: 800.426.6287 Fax: 401.765.7575 e-mail: tech@hannainst.com Printed in ROMANIA MAN96704...