Hanna Instruments HI96821 Instruction Manual
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Hanna Instruments HI96821 Instruction Manual

Digital sodium chloride refractometer
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INSTRUCTION MANUAL
HI96821
Digital Sodium Chloride Refractometer
Hanna Instruments Inc., 584 Park East Drive, Woonsocket, RI 02895 USA
www.hannainst.com

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Summary of Contents for Hanna Instruments HI96821

  • Page 1 INSTRUCTION MANUAL HI96821 Digital Sodium Chloride Refractometer Hanna Instruments Inc., 584 Park East Drive, Woonsocket, RI 02895 USA www.hannainst.com...

  • Page 2: Table Of Contents

    All rights are reserved. Reproduction in whole or in part is prohibited without the copyright owner’s written consent, Hanna Instruments Inc., Woonsocket, Rhode Island, 02895, USA. Hanna Instruments reserves the right to modify the design, construction, or appearance of its products without advance notice.

  • Page 3: Preliminary Examination

    Preliminary Examination 1. PRELIMINARY EXAMINATION Remove the instrument and accessories from the packaging and examine it carefully. For further assistance, ® please contact your local Hanna Instruments office or email us at tech@hannainst.com. Each HI96821 instrument is supplied with: • Plastic pipette •...

  • Page 4: Specifications

    4  Specifications 3. SPECIFICATIONS Range 0.0 to 28.0 g/100 g g/100 g Resolution 0.1 g/100 g Accuracy ±0.2 g/100 g Range 0.0 to 34.0 g/100 mL g/100 mL Resolution 0.1 g/100 mL Accuracy ±0.2 g/100 mL Range 1.000 to 1.216 Specific Gravity Specific Gravity Resolution 0.001 Specific Gravity...

  • Page 5: Principle Of Operation

    In the HI96821, light from an LED passes through a prism in contact with the sample. An image sensor determines the critical angle at which the light is no longer refracted through the sample.

  • Page 6: Functional Description

    6  Functional Description 5. FUNCTIONAL DESCRIPTION Top View Rear View Sodium Chloride g/100g Refractometer g/100mL SG (20/20) °Baumé READ ZERO RANGE 1. Liquid Crystal Display (LCD) 4. Battery cover 2. Keypad 5. Battery compartment 3. Stainless steel sample well and prism Keypad ON/OFF User measurement...

  • Page 7: Measurement Guidelines

    Measurement Guidelines  6. MEASUREMENT GUIDELINES • Handle instrument carefully. Do not drop. • Do not immerse instrument under water. • Do not spray water to any part of instrument except the “sample well” located over the prism. • The instrument is intended to measure sodium chloride solutions. Do not expose instrument or prism to solvents that will damage it.

  • Page 8: Calibration Procedure

    8  Calibration Procedure 7. CALIBRATION PROCEDURE Calibration should be performed daily, before measurements are made, when the battery has been replaced, between a long series of measurements, or if environmental changes have occurred since the last calibration. 1. Press the ON/OFF key, then release. Two instrument test screens will be displayed briefly; all LCD segments followed by the percentage of remaining battery life.

  • Page 9: Measurement Procedures

    Measurement Procedures  8. MEASUREMENT PROCEDURES Verify the instrument has been calibrated before taking measurements. 1. Wipe off prism surface located at the bottom of the sample well. Make sure the prism and sample well are completely dry. 2. Using a plastic pipette, drip sample onto the prism surface. Fill the well completely. Note: If the temperature of the sample differs significantly from the temperature of the instrument, wait approximately 1 minute to allow thermal equilibration.
  • Page 10 10  Measurement Procedures To Change Measurement Unit Press the RANGE key to select measurement units.The instrument toggles between the four measurement scales each time the key is pressed and the primary display indicates “G‑G” for g/100 g, “G‑L” for g/100 mL, “S.G.”...

  • Page 11: Making A Nacl Standard Solution (G/100 G)

    Making a NaCl Standard Solution (g/100 g)  9. MAKING A NaCl STANDARD SOLUTION (g/100 g) To make a Standard NaCl Solution (g/100 g), follow the procedure below: • Place container (such as a glass vial or dropper bottle that has a cover) on an analytical balance. •...

  • Page 12: Error Messages

    12  Error Messages 11. ERROR MESSAGES “Err“ General failure. Cycle power to instrument. ® If error persists, contact your local Hanna Instruments office. 25 . 0 “LO“ primary display Sample exceeds minimum measurement range. 25 . 0 “HI“ primary display Sample exceeds maximum measurement range.

  • Page 13: Accessories

    13 . 9 Outside temperature compensation range (10.0 to 40.0 °C). 40 . 3 SETUP segment blinking ---- Factory calibration lost. Contact your local Hanna Instruments office. 25 . 0 12. ACCESSORIES Ordering Information Product Description HI740157P Plastic refilling pipette (20 pcs.) HI740029P 9 V battery (10 pcs.)

  • Page 14: Certification

    If the repair is not covered by the warranty, you will be notified of the charges incurred. If the meter is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization number from the Technical Service department and then send it with shipping costs prepaid.

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