During the daily use of the airtightness tester, the temperature changes in the testing environment have a significant impact on the accuracy of the instrument's test results.
The impact of temperature changes on the effectiveness of airtightness testers is mainly reflected in two aspects:
Due to the uneven material of the workpiece itself, there are significant differences in heat conduction between different parts, resulting in large local temperature differences within the workpiece itself;
The difference between the temperature of the workpiece after cleaning and the temperature of the production environment varies greatly. The influence of these two factors can easily lead to the accuracy of test results exceeding the acceptable error range of the system.
In the design solution phase, the time for the workpiece to travel from the cleaning machine to the testing equipment can be extended by increasing the cooling channel length of the airtightness tester. By increasing the air cooling time and enhancing heat dissipation, temperature changes can be reduced to ensure the accuracy of the airtightness tester's detection results. In practical operation, natural air blowing cooling can be used as the temperature cooling method, which is beneficial for maintaining the relative unity between the workpiece temperature and the ambient temperature.
In the specific implementation process of the plan, it is necessary to first calculate the self temperature compensation capability and parameters of the airtightness tester equipment, and control the stability within a reasonable range through design. By summarizing past testing experience and analyzing the compensation capability of the airtightness testing equipment itself, it is determined that the surface temperature difference of the tested workpiece should be controlled within 2 ℃ during the airtightness testing process, and the temperature difference between the workpiece and the environment should be controlled within 3 ℃. This can ensure that the temperature of the workpiece can reach the target control range before conducting the airtightness testing, and effectively reduce the influence of temperature factors on the detection results of the airtightness testing instrument.
Suzhou Loho Electronic Technology Co., Ltd. specializes in airtightness detectors, airtightness detectors, leak detectors, airtightness leak detectors, airtightness testers and other equipment. They are widely used, have fast detection speed, and are suitable for sealing, waterproofing, airtightness, leakage and other fields. Welcome to inquire by phone: 189-1262-8676
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