Overview
CHENCHI BD-48 whiteness meter is an instrument for measurement of whiteness and Optical Properties of various materials. It mainly measures the whiteness of paper and Cardboard, pulp and chemical fiber pulp, cotton and chemical fiber, Spinning & weaving products, plastics, Pottery and porcelain, pond porcelain, starch, salt, white cement, porcelain clay, talc powder and other objects, and can measure the Opacity and other performance of thin sheet materials.
Features
1. Determine the blue light diffuse reflection factor (R457) of the sample, that is, "blue light whiteness" or "ISO whiteness".
2. Analyze whether the sample contains fluorescent whitening agent, and determine the fluorescent whiteness (whiteness).
3, measuring the luminance stimulation value of the sample Y10, i.e., the green light diffuse reflection factor Ry.
4. Opacity, transparency, light scattering coefficient and light absorption coefficient of the sample were measured.
5. Measure the inks absorption value of paper and Cardboard.
Principle
The instrument conforms to the GB3978-83 standard illuminator and illuminating observation conditions, simulating the illumination of the D65 illuminator. It adopts d/o illuminating observation geometry conditions, is equipped with a 150mm diameter diffuse ball and a 30mm diameter test hole, and is equipped with a light absorber to eliminate the influence of the specular reflection of the sample. The peak wavelength of the Light spectrum power distribution of its R457 whiteness Optical inspection system is 457nm, and the half-height width is 44nm; The Y10 Optical inspection system conforms to the GB3979-83 object color Measuring method.
Applications
Paper and Cardboard, Pulp and Fiber Pulp, Cotton and Fiber, Spinning & Weaving Products, Plastics, Pottery and porcelain, Pond porcelain, Starch, Salt, White cement, Ceramic clay, Talc
Standards
GB3978-83, GB3979-83, GB7933-87, GB7974-87, ISO 2470, GB 8940.2, GB 1840, GB 2913, GB 13025.2, GB 1543-88, ISO 2471, GB10339-89, GB T/5950, Spinning & weaving Industry Standard (Determination of whiteness of pulp for chemical fibers)
Steps
The operation steps are not mentioned in the information provided.
Notice
• power requirements: AC 170~ 264V, 50Hz, 0.2A.
Working environment: temperature 0~ 40 ℃, relative humidity does not exceed 85%.
• Specimen size: The diameter of the test plane should be ≥ 30mm, and the Film thickness should be ≤ 40mm.
• Instrument performance indicators: When using, pay attention to its zero drift ≤ 0.1, indication drift ≤ 0.1, Indication Error ≤ 0.5, Repeatability ≤ 0.1, mirror reflection error ≤ 0.1.
