Are you having trouble with leak test after washing process? We can help you reduce measurement errors and false rejects caused by the influence of work temperature.
When the work temperature is higher than the ambient temperature in such a case as after washing process, the temperature change of the work as a result of thermal exchange with the clamp fixture affects the leak measurement. To cope with it, the measured value can be compensated using the correlation between the differential pressure change and work temperature that causes measurement errors. The Temperature Compensation realizes highly accurate leak tests and reduces false rejects.
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basic information
◆ Automatic Mapping 1. Collecting data on the ambient-temperature works and after-washing works Carry out leak test under the same condition as the production line to determine Temperature Compensation value. ◆ Use non-leaking works for sampling. ◆ Collect data on the ambient-temperature works and after-washing works. ◆ Collected data can be checked on the Sampling Data (Scatter plot) screen. 2. Checking the Sampling Data Collected data can be checked on the Sampling Data (List) screen. 3. Determining the Temperature Compensation value Determine the Temperature Compensation value using the Sampling Data. Selecting “Least-square Method” or “Averaging Method” automatically determines the Temperature Compensation value.
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Applications/Examples of results
◆Reduction of errors due to the influence of work temperature ◆ After washing the works
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Company information
Cosmo’s Air Leak Testers began with the automation of cylinder block airtightness tests for engines in 1970. Our products are utilized in various fields including automotive parts, gas, water supply, medical, electrical, electronics, and food. In line with the overseas expansion of Japanese automakers, we began our own overseas expansion in 1983. We now have 24 sales and service offices in 13 countries. We are offering proposals and providing after-sales services overseas as in Japan. Currently, in order to support the electrification of automobiles, our products are being used for leak testing of parts for electrification such as battery cases and inverters as well as for fitting testing of electric power connectors. We are contributing to the efforts by our customers to prevent emissions of CO2. In various regions of South and Southeast Asia, we are donating pressure measuring equipment to technical schools to improve the quality of education and exchange technologies with local machinery manufacturers. We have been making every effort to help improve the industrial base through local manufacturing of high-quality leak testing equipment.
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