Hanna Instruments HI96831 Instruction Manual
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Hanna Instruments HI96831 Instruction Manual

Hanna Instruments HI96831 Instruction Manual

Digital ethylene glycol refractometer
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INSTRUCTION MANUAL
HI96831
Digital Ethylene Glycol 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 HI96831

  • Page 1 INSTRUCTION MANUAL HI96831 Digital Ethylene Glycol 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

    % volume and freezing point of ethylene glycol based coolants or antifreeze. HI96831 device benefits from Hanna Instruments’ years of experience as a manufacturer of analytical instruments. The digital refractometer eliminates the uncertainty associated with mechanical refractometers and is easily portable for use in the field to optimize your cooling system.

  • Page 4: Specifications

    4  Specifications 3. SPECIFICATIONS Range 0.0 to 100.0 % V/V % Volume Resolution 0.1 % V/V Accuracy ±0.2 % V/V Range 0.0 to −50.0 °C (32.0 to −58.0 °F) Freezing Point Resolution 0.1 °C / 0.1 °F Accuracy ±0.5 °C / ±1.0 °F Range 0.0 to 80.0°C (32.0 to 176.0 °F) Temperature...
  • Page 5 In the HI96831 refractometer, 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 Ethylene Glycol %Volume (%v/v) Refractometer Freezing Point (FP) 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 ethylene glycol 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 two measurement scales each time the key is pressed and the primary display indicates “VoL” % Volume or “FrPt” for Freezing Point. When the instrument displays the screen with 4 dashes, it is ready for measurement.

  • Page 11: Making A X % Ethylene Glycol Solution

    Making a X % Ethylene Glycol Solution  9. MAKING A X % ETHYLENE GLYCOL SOLUTION To make a Ethylene Glycol Solution volumetrically, follow the procedure below: • Add X mL of high purity ethylene glycol (CAS #: 107‑21‑1; MW 62.068) to a 100 mL Grade A volumetric flask. •...

  • 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

    56 . 0 Outside temperature compensation range (0.0 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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