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Company News About How to use color difference meter to detect paint color difference

How to use color difference meter to detect paint color difference

2024-06-28
Latest company news about How to use color difference meter to detect paint color difference

In industrial production and daily life, the accuracy of color is becoming more and more important. Whether it is automobile manufacturing, cosmetics production, or home decoration, the accuracy of color will affect the quality and market acceptance of the product. In order to ensure the accuracy of color, many industries began to use color difference meters to detect color differences. This article will explain how to use the color difference meter to detect whether the paint color has color difference.

 

一、he working principle of the color difference meter
A color difference meter is an instrument that evaluates color differences by measuring the color brightness, saturation, and hue of an object's surface. It can convert the color of an object into numerical values, and then calculate these values with standard color values to obtain color differences. A color difference meter usually consists of a light source, a receiver and a processor.

 

二、the steps of using color difference meter

1. Sample preparation

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Select a representative paint sample and apply it evenly on the cardboard to ensure that the surface of the sample is smooth to avoid the deviation of light when reflected on the surface. Dry in a cool place to avoid sticking and contaminating the instrument and affecting the measurement results.

2. Measurement phase

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Place the color difference meter on the sample surface and adjust the Angle so that the light source shines vertically on the sample. Then, press the measurement key and the color difference meter will automatically measure the color of the sample and produce the data. Typically, the color difference meter will output three values: L, a, and b. L represents the color brightness, a represents the red-green value, and b represents the yellow-blue value.

3. Data analysis

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The color difference is calculated by comparing the data from the color difference meter with the standard color data. In general, the smaller the color difference value, the closer the color is to the standard color. Commonly used color difference formulas include ΔEab, ΔE00, etc.

4. Result report

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According to the calculated color difference value, the conformity of the sample is evaluated. If the color difference value is within the acceptable range, it indicates that the paint color meets the requirements; If the color difference value exceeds the acceptable range, the sample formula can be adjusted according to the data of the color difference meter, and then the sample can be obtained to meet the requirements. (The range of assessment can be set by the system itself)

 

三、precautions
1. Keep the instrument clean: the color difference meter needs to be cleaned and maintained before and after use to extend its service life.
2. Correct operation: Read the instruction manual carefully before use, and measure according to the operating steps.
3. Calibration: It is necessary to check whether the instrument has been calibrated before use to ensure the accuracy of the measurement results.

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