What is the Gloss Unit -GU? How to Choose Cheap Glossmeter?
1. What is the gloss unit- GU mean?
Many users do not understand the meaning of the gloss unit- GU which is stipulated in the spray surface inspection standard. Next, we will introduce what is gloss unit?
Gloss is a characteristic of object surface. It is an optical phenomenon such as reflection, refraction, diffraction, interference and scattering caused by light on the object surface. Spray gloss refers to the ability of the spray coating film to reflect light in the same direction in the same direction under the light. Gloss indicates the degree of brightness of the coating film. A coating film with high gloss exhibits a large brightness under the same lighting conditions. Spray gloss is expressed by mirror gloss, the unit is%. The higher the percentage of gloss, the better the surface mirror effect. The GU here is the abbreviation of gloss unit in English, which means the gloss unit. It is based on a standard board and is measured in a dimensionless manner. To be precise, it is the reflectance of the object surface when it is illuminated by light and the reflectance of the standard surface. With the continuous improvement of modern spraying process technology, the surface of the product can be presented with different glosses to meet the needs of different users.
2. Selection of cheap glossmeter
Generally speaking, spray gloss can be tested using a cheap glossmeter that meets the requirements of national measurement standards. LS192 cheap glossmeter has the following characteristics:
Feature 1: The LS192 cheap glossmeter not only has a very exquisite external light appearance, but also has a super metallic texture.
Feature two: LS192 cheap glossmeter is the first instrument that can be compared with gloss meter BYK. It prompts the user to clean the standard board in order to complete the correct calibration (the use of a contaminated standard board will seriously affect the measurement accuracy).
Feature 3: The first Chinese instrument with temperature compensation function. Even if the external temperature changes, the instrument can automatically adjust the luminous efficiency to ensure the same luminous flux.
Feature 4: The entire instrument has only one button, which is easy to operate; The instrument has a pure interface display, which also displays real-time values, maximum, minimum, average, standard deviation values and number of measurements.
Feature 5: Low power consumption, continuous use for 48 hours; Good repeatability, the error does not exceed ± 0.2GU; Good reproducibility, the error is no more than ± 0.5GU between batches.
Linshang 60 degree gloss meter only cost 265$ , if you want to find a cheap glossmeter with best cost performance. Linshang gloss meter would be your best choice.
3. What should we do if the spray gloss is low?
(1) Improve oven temperature and adjust baking time.
(2) Too much powder return will also cause loss of light or dullness. Avoid excessive powder return.
(3) Choose powder coating with higher gloss.