VEE GEE NDX-1 Operation Manual

VEE GEE NDX-1 Operation Manual Manual pdf 1 page image

Printed in the USA No. OM122006RFNDX-1-AOperation ManualModel NDX-11.3330-1.5170 nDSpecificationsCat. No. 43053Temperature CorrectionModel NDX-1 is factory-calibrated to conduct readings at 20°C. For the best accuracy, ifambient temperature falls above or below 20°C, temperature correction values should be ap-plied to readings. When a reading is taken under these circumstances, note the temperaturevalue from the thermometer mounted on the side of the refractometer and follow the procedurelisted below.Temperature coefficients are used to correct measured values conducted at temperatures other than the reference(calibration) temperature. For each °C higher than the reference temperature, a temperature coefficient is subtracted fromthe value; for each °C lower than the reference temperature, a temperature coefficient is added to the value. Model NDX-1can be used for measuring both water-based solutions and oils. The coefficients used for temperature correction on oil-basedsolutions are slightly higher than those used for water-based solutions (see upper right corner). If there is a specific temperaturecoefficient known for the sample being tested, use this value. Otherwise use an average of the values shown in the upper rightcorner. Confirm the type of sample being tested and perform the following calculations:Temperature CoefficientsWater-Based Solutions:(-0.0001 to -0.0002/+°C)Oil-Based Solutions:(-0.0003 to -0.0004/+°C)Common OilsRange: 1.3330-1.5170 nD (Refractive Index)Resolution: 0.0005Accuracy: ±0.0005Dimensions: 35 x 35 x 200mm (1.4 x 1.4 x 7.9”)Weight: 650g (22.9 oz.)Supplied With: Vinyl Carrying Case (1), Plastic Transfer Pipet (1)

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