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Summary of Contents for Hanna Instruments HI96841
- Page 1 HI96841 Refractometer for Beer Measurements...
- 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 ............Functional Description ............Display Elements ..............Measurement Guidelines ............Calibration Procedure ............. Measurement Procedure ............Making a Standard % Brix Solution ........To Change Temperature Unit ..........Battery Replacement .............. Error Messages ..............
- Page 4 A defective instrument must be returned in its original packing. HI96841 Digital Beer Refractometer is a rugged portable, water resis‑ tant device that benefits from Hanna Instruments’ years of experience as a manufacturer of analytical instruments. HI96841 is an optical instrument that employs the measurement of refractive index of a solution.
- Page 5 Range 0.0 to 30.0 °Plato / 0.0 to 80.0 °C (32.0 to176.0 °F) Resolution 0.1 °Plato / 0.1 °C (0.1 °F) Accuracy ± 0.2 °Plato / ± 0.3 °C (±0.5 °F) Temperature Automatic between 10.0 and 40.0 °C Compensation (50.0 ‑ 104.0 °F) Measurement Time Approximately 1.5 seconds Minimum Sample...
- Page 6 In the HI96841, 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 7 The °Plato scale is a way to quantify the concentration of sugars and dissolved solids in wort. It is used as an indicator of the potential alcoholic strength of a beer. The HI96841 converts the refractive index reading to °Plato based on the tables maintained by the International Commission for Uniform Methods of Sugar Analysis (ICUMSA) and the American Society of Brewing Chemists (ASBC).
- Page 8 TOP VIEW 1. Liquid Crystal Display (LCD) 2. Secondary Display 3. Primary Display 4. READ Key (User Measurement) 5. ZERO Key (User Calibration) 6. ON/OFF 7. Stainless Steel Sample Well and Prism BOTTOM 8. Battery Cover 9. Battery Compartment...
- Page 9 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 10.0‑40.0 °C / 50.0‑104.0 °F range) 8.
- Page 10 • 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 the sugar content of wort in Brewing process.
- 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 4. Gently absorb the ZERO water standard with a soft tissue. Use care not to scratch the prism surface. Dry the surface completely. The instrument is ready for sample measurement. Note: If the instrument is turned off the calibration will not be lost.
- Page 13 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 14 To make a Brix Solution, follow the procedure below: • Place container (such as a glass vial or dropper bottle that has a cover) on an analytical balance. • Tare the balance. • To make an X %BRIX solution weigh out X grams of high purity Sucrose (CAS #: 57‑50‑1) directly into the container.
- Page 15 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 15 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 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 new 9V battery making certain 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 HI4020-11 50% Brix Standard, 10 mL HI740157P Plastic refilling pipette (20 pcs.) HI740029P 9V battery (10 pcs.) MAN96841 05/17...
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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 Printed in ROMANIA MAN96841...
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