During the production process of the product, the temperature cannot be constant. These changes in temperature have an impact on many links. We cannot ignore this important factor in color testing. The temperature requirements for Colorimeter testing are generally within a changing range. Generally speaking, within this range, the Colorimeter The tests are reasonable, but most of the product manuals of the Colorimeter do not mention whether the temperature will affect the results. From the past operating experience, we can conclude that the temperature change will affect the results of the Colorimeter.
There are also certain deviations in the results measured by Colorimeters at different temperatures. This deviation will not be obvious for most products, but there are still differences for sensitive and extremely demanding industries. For example, in the automobile manufacturing industry, the body temperature after the car body leaves the baking room is (50-60) ℃. After the color difference meter is calibrated, the color difference meter is used to randomly test 5 sets of white color solid-color paint door parts after the car body leaves the baking room. The detection is the same after 4 hours. The vehicle is in the same position, and the same vehicle is detected in the same position for 24 hours, and the result values are obviously different.
Similarly, when we went to test and demonstrate the Colorimeter for customers, we found that even the change of room temperature has an impact on the test results of the Colorimeter, but the value change is not so large.
Therefore, in order to avoid the error of the Colorimeter test data analysis results caused by the temperature, do not use the Colorimeter to detect the product immediately after the production is completed, and place it at room temperature (some products may have a specific temperature environment) for 3-4 hours, etc. When the product temperature reaches a constant value, the color difference is detected by the color difference meter. In 3-4 hours, the temperature of the general product will drop to a constant temperature similar to room temperature, but it is not ruled out that some special products will dissipate heat slowly or are not easy to cool down. It is necessary to determine a period of time according to the actual situation to keep the product temperature constant. Then test with a Colorimeter. There are also some products produced at low temperature that need a certain period of time to return to normal temperature or reach a specific temperature required by the industry, but no matter what the product is, it must be tested by a Colorimeter at a constant temperature, so that the test data will at least not be affected by the temperature. Inaccurate or error-prone.
In fact, the factors that affect temperature on the Colorimeter are all details. These small details are generally not noticed by everyone, but these details are often the key to your success.
