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Hanna Instruments HI96831 Instruction Manual
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Hanna Instruments HI96831 Instruction Manual

Ethylene glycol refractometer
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HI96831
Ethylene Glycol Refractometer

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Summary of Contents for Hanna Instruments HI96831

  • Page 1 HI96831 Ethylene Glycol Refractometer...
  • Page 2 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 ..............Specifications ................ Principle of Operation ............Measurement Units............... Functional Description ............Display Elements ..............Measurement Guidelines ............Calibration Procedure ............. Measurement Procedure ............To Change Measurement Unit ..........To Change Temperature Unit ..........Making a Standard Solution..........Battery Replacement.............
  • Page 4 Remove the instrument from the packing materials and examine carefully to ensure no damage has occurred during shipping. If any damage has occurred, please contact your local Hanna Instruments Office. Each HI96831 instrument is supplied with: • 9 V battery •...
  • Page 5 % volume and freezing point of ethylene glycol based coolants or antifreeze. HI96831 device benefits from Hanna Instruments’ years of experi‑ ence 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 6 % Volume : 0.0 to 100.0 % V/V Freezing point: 0.0 to ‑50.0 ºC Range (32.0 to ‑58.0 ºF) ºC (ºF): 0.0 to 80.0 ºC (32.0 to 176.0 ºF) % Volume: 0.1 % V/V Resolution Freezing Point: 0.1 ºC (0.1 ºF) ºC ( ºF): 0.1 ºC (0.1 ºF) %Volume: ±0.2% V/V Accuracy...
  • Page 7 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 8 Freezing point is displayed as a temperature from 0.0 to ‑ 50.0 °C cor‑ responding to 0‑58 % by volume. The display blinks the freezing point when the concentration of Ethylene glycol is greater than 78 % concentration by volume. When the display shows “LO”, the freezing point is at a minimum (below ‑50 °C).
  • Page 9 TOP VIEW 1. Liquid Crystal Display (LCD) 2. Secondary Display 3. Primary Display 4. READ Key (User Measurement) 5. ZERO Key (User Calibration) 6. RANGE Key (User Measurement Unit) 7. ON/OFF 8. Stainless Steel Sample Well and Prism BOTTOM 9. Battery Cover 10.
  • Page 10 1. Battery (blinks when low battery condition detected) 2. Primary Display (displays measurement and error messages) 3. Measurement in Progress Tag 4. SETUP: Factory Calibration Tag 5. CAL: Calibration Tag 6. Measurement Unit 7. Automatic Temperature Compensation (blinks when temperature exceeds 0.0‑40.0 °C / 32.0‑104.0 °F range) 8.
  • Page 11 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;...
  • Page 12 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.
  • Page 13 Press the RANGE key to select the 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, the instrument is ready for measurement.
  • Page 14 To change the temperature measurement unit from Celsius to Fahrenheit (or vice versa), follow this procedure. 1. Press and hold the ON/OFF key continuously for approximately 8 seconds. The LCD will display the “all segment” screen followed by a screen with the model number on the primary display and the version number on the secondary display.
  • Page 15 To make a Ethylene Glycol Solution, follow the procedure below: • To make an X % ethylene glycol solution volumetrically add X mL of high purity ethylene glycol (CAS #: 107‑21‑1; MW 62.068) to a 100 mL Grade A volumetric flask. • Use distilled or deionized water to bring the flask close to the total volume, mix, allow time for the solution to return to room temperature.
  • Page 16 To replace the instrument’s battery, follow these steps: • Make sure the instrument is off. • Turn instrument upside down and remove the battery cover by turning it counterclockwise. • Extract the battery from its location. • Replace with a new 9V battery making sure to observe polarity. •...
  • Page 17 Prism surface insufficiently covered. “ELt“ Too much external light for measurement. Cover sample well with hand. “nLt“ LED light is not detected. Contact your local Hanna Instruments Office. Battery segment <5% of battery life is remaining. blinking Temperature values Temperature measurement are blinking out of range (0.0 to 80.0 °C).
  • Page 18 Code Description HI740157P Plastic refilling pipette (20 pcs.) HI740029P 9V battery (10 pcs.) MAN96831 04/17...

  • Page 19: Warranty

    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 or appearance of its products without advance notice.
  • Page 20 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 MAN96831 Printed in ROMANIA...