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Summary of Contents for NIEUWKOOP RE1500
- Page 1 USER MANUAL RE1500 REFRACTOMETER DIGITAL 0-85% Brix...
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Page 2: Table Of Contents
RE1500 REFRACTOMETER DIGITAL _____________________________________________________________________________________________ Index Functional description ..............................................2 General description ................................................4 Specifications .................................................... 4 Principle of operation ............................................... 5 Measuring guidelines ............................................... 6 Calibration procedure ..............................................7 Measurement procedure ............................................8 Making a standard % brix solution ........................................10 Changing temperature unit ............................................ -
Page 3: Functional Description
RE1500 REFRACTOMETER DIGITAL _____________________________________________________________________________________________ FUNCTIONAL DESCRIPTION DISPLAY BATTERY STATUS ICON (BLINKS WHEN LOW BATTERY CONDITION DETECTED) MEASUREMENT IN PROGRESS TAG SETUP: FACTORY CALIBRATION TAG CAL: CALIBRATION TAG PRIMARY DISPLAY (DISPLAYS MEASUREMENT AND ERROR MESSAGES) AUTOMATIC TEMPERATURE COMPENSATION (BLINKS WHEN TEMPERATURE EXCEEDS 10-40 °C/ 50-104 °F RANGE) TEMPERATURE UNITS... - Page 4 RE1500 REFRACTOMETER DIGITAL _____________________________________________________________________________________________ FRONT PANEL LIQUID CRYSTAL DISPLAY (LCD) READ KEY (USER MEASUREMENT) ZERO KEY(USER CALIBRATION) ON/OFF PRIMARY DISPLAY SECONDARY DISPLAY S.STEEL SAMPLE WELL AND PRISM BOTTOM BATTERY COVER BATTERY COMPARTMENT...
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Page 5: General Description
The RE1500 is an optical instrument that employs the measurement of refractive index to determine the % Brix of sugar in aqueous solutions. The method is both simple and quick. Samples are measured after a simple user calibration with deionized or distilled water. -
Page 6: Principle Of Operation
In the RE1500, light from a 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. The RE1500 automatically applies temperature compensation to the measurement and converts the refractive index of the sample to sucrose concentration in units of percent (by weight) Brix. - Page 7 RE1500 REFRACTOMETER DIGITAL _____________________________________________________________________________________________ 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 sugar solutions. Do not expose instrument or prism to solvents that will damage it.
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Page 8: Calibration Procedure
RE1500 REFRACTOMETER DIGITAL _____________________________________________________________________________________________ CALIBRATION PROCEDURE Calibration should be performed daily, before measurements are made, when the battery has been replaced, or between a long series of measurements. Press the ON/OFF key, then release. Two instrument test screens will be displayed briefly; an “all segment”... -
Page 9: Measurement Procedure
RE1500 REFRACTOMETER DIGITAL _____________________________________________________________________________________________ MEASUREMENT PROCEDURE Verify the instrument has been calibrated before taking measurements. Wipe off prism surface located at the bottom of the sample well. Using plastic pipettes, drip sample onto the prism surface. Fill the well completely. -
Page 10: Making A Standard % Brix Solution
RE1500 REFRACTOMETER DIGITAL _____________________________________________________________________________________________ MAKING A STANDARD % BRIX SOLUTION 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. -
Page 11: Error Messages
ERROR MESSAGES General failure. Cycle power instrument. if instrument still has error, contact Nieuwkoop or your dealer. LO Top display Sample is reading lower than the 0% standard used for meter calibration. HI Top display Sample exceeds maximum measurement range. -
Page 12: Battery Replacement
Damage due to accidents, misuse, tampering or lack of prescribed maintenance is not covered by the warranty. Nieuwkoop BV reserves the right to make improvements in design, construction and appearance of its products without advance notice.
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