Instruction Manual HI 96804 Refractometer for Invert Sugar Measurements w w w. h a n n a i n s t .
Dear Customer, Thank you for choosing a Hanna product. This manual will provide you with the necessary information for the correct use of the instrument. Please read it carefully before using the meter. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com. directives. This instrument is in compliance with TABLE OF CONTENTS PRELIMINARY EXAMINATION ............................................................................................. 2 GENERAL DESCRIPTION ..
PRINCIPLE OF OPERATION FUNCTIONAL DESCRIPTION The Invert Sugar determination is made by measuring the refractive index of a solution. Refractive Index is an optical characteristic of a substance and the number of dissolved particles in it. Refractive Index is defined as the ratio of the speed of light in empty space to the speed of light in the substance. A result of this property is that light will “bend”, or change direction, when it travels through a substance of different refractive index.
ERROR MESSAGES DISPLAY ELEMENTS Error Code 1. 2. 3. 4. 5. 6 7. 8.
CALIBRATION MEASUREMENT Calibration should be performed daily, before measurements are made, when the battery has been replaced, or between a long series of measurements. 1. Press the ON/OFF key, then release. Two instrument test screens will be displayed briefly; a LCD segment followed by the percentage of remaining battery life. When LCD displays dashes, the instrument is ready. Verify the instrument has been calibrated before taking measurements. 1.
TO CHANGE TEMPERATURE UNITS BATTERY REPLACEMENT 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 aproximately 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. Continue pressing the ON/OFF key.
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