User manual HANNA INSTRUMENTS HI 96814

[. . . ] Instruction Manual HI 96811, HI 96812 HI 96813, HI 96814 Refractometers for Wine and Grape Product Measurements w w w. c o m 1 Dear Customer, Thank you for choosing a Hanna product. This manual will provide you with the necessary information for the correct use of these instruments. Please read it carefully before using the meters. [. . . ] The instrument is intended to measure grape/wine solutions. Do not expose instrument or prism to solvents that will damage it. This includes most organic solvents and extremely hot or cold solutions. Particulate matter in a sample may scratch the prism. Absorb sample on soft tissue and rinse sample well with deionized or distilled water between samples. Use plastic pipettes to transfer all solutions. Do not use metallic tools such as needles, spoons or tweezers as these will scratch the prism. Cover sample well with hand if measuring in direct sun. · · · CALIBRATION PROCEDURE Calibration should be performed daily, before measurements are made, when the battery has been replaced, or between a long series of measurements. Two instrument test screens will be displayed briefly; all LCD segments followed by the percentage of remaining battery life. When the LCD displays dashes, the instrument is ready. 2. Using a plastic pipette, fill the sample well with distilled or deionized water. Make sure the prism is completely covered. Note: If the ZERO sample is subject to intense light such as sunlight or another strong source, cover the sample well with your hand or other shade during the calibration. 9 3. If no error messages appear, your unit is calibrated. The potential alcohol scale also indicates the conversion factor chosen for the potential alcohol reading. See TO CHANGE POTENTIAL ALCOHOL CONVERSION FACTOR (page 13) to change the current factor. Note: When changing ranges the presently configured conversion factor will be displayed in the lower display. (See page 13) 11 For HI 96814 only: 1. Press the RANGE key to select measurement units %Brix, °Oechsle (°Oe) or °KMW (°Babo). The instrument toggles between the three scales each time the key is pressed and the primary display indicates "bri" for %Brix, "OE" for °Oechsle or "bAbo" for °KMW. When the instrument displays the screen with 4 dashes the instrument is ready for measurement. A number on the display indicates the selected unit: "1" denotes %Brix, "2" denotes °Oe and "3" denotes °KMW as indicated on the instrument cover. TO CHANGE TEMPERATURE UNIT To change the temperature measurement unit from Celsius to Fahrenheit (or vice versa), follow this procedure. [. . . ] This warranty is limited to repair or replacement free of charge. Damage due to accident, misuse, tampering or lack of prescribed maintenance is not covered. If service is required, contact your dealer. If under warranty, report the model number, date of purchase, serial number and the nature of the failure. [. . . ]