Overview
The NR4520 whiteness meter is a 3nh brand whiteness analyzer for measuring the ISOR457 whiteness, CIE whiteness, ASTME313 whiteness, yellowness YI and reflectance of objects. The instrument is suitable for measuring various mirror reflectance values, including ISO whiteness (R457 whiteness), and can measure the fluorescence whiteness of fluorescent whitening samples.
Features
1. Can measure ISO R457 whiteness, CIE whiteness, ASTM E313 whiteness, yellowness YI and reflectance
2. Supports multiple measurements and calculates arithmetic averages
3. Analog D65 illumination, using 45/0 (45 direction incidence /0 degree reception) illumination conditions, in line with CIE No.15 and GB/T3978 standards
Principle
The instrument uses LED Illuminant and silicon photodiode sensors to simulate D65 illumination, and the sample is measured by 45/0 (45 direction incidence /0 degree reception) Optical inspection system. The detector Response function is based on D65 Illuminant and CIE10 degree Response to achieve accurate measurement of whiteness and reflectance.
Applications
Paper making, Spinning & weaving, Printing and dyeing, Plastics, Ceramics, Enamel, Grain, Building materials, paints, Chemicals, Salt
Standards
CIE No.15、GB/T3978
Steps
1. Preheating calibration instrument
2. Place the sample on the measurement platform
3. Start the measurement, the instrument automatically completes (Measurement time is about 1.5 seconds)
4. View the display results (including difference, pass/fail)
5, the average value of repeability measurement
Notice
• Temperature range from 0 to 40 ° C (32 to 104 ° F)
• Storage Temperature range -20~ 50 ° C (-4~ 122 ° F)
• Use after instrument preheating correction to ensure Repeatability Delta R0.1
• Regularly check the battery level and use a rechargeable lithium-ion battery
• Avoid use or storage in environments beyond the specified Temperature range
