{"id":8256,"date":"2026-07-02T11:00:27","date_gmt":"2026-07-02T03:00:27","guid":{"rendered":"https:\/\/www.air-tester.com\/?p=8256"},"modified":"2026-07-02T11:42:26","modified_gmt":"2026-07-02T03:42:26","slug":"zhi-ya-shi-qi-mi-yi-chong-fu","status":"publish","type":"post","link":"https:\/\/www.air-tester.com\/en\/zhi-ya-shi-qi-mi-yi-chong-fu.html\/","title":{"rendered":"Jingcheng Engineering\u2019s Field Tests Reveal: How Accurate Is the Repeatability of Direct-Pressure Leak Testers?"},"content":{"rendered":"

In the airtightness testing industry, the first question engineers typically ask when purchasing equipment is:<\/p>\n\n\n\n

ThisAirtightness Tester<\/a>What is the accuracy?<\/strong><\/p>\n\n\n\n

However, when it comes to 100% inspection on the production line, what is even more critical than accuracy is:repeatable<\/strong><\/p>\n\n\n\n

\"Sweeper
Precision EngineeringAir tightness testing equipment<\/a>Application on the Customer's Production Line<\/em><\/figcaption><\/figure>\n\n\n\n

No matter how high the theoretical accuracy of a piece of equipment may be,If the same product is tested 10 times in a row and yields 10 different results, the test data itself becomes meaningless.<\/strong>TheProducts were deemed \"OK\" in the morning but \"NG\" in the afternoon, resulting in the false rejection of good products, an increase in rework, and a corresponding drop in production efficiency.<\/strong>The<\/p>\n\n\n\n

Therefore, the international mainstreamAir tightness testing equipment<\/a>In marketing materials, in addition to precision figures, the emphasis is often placed onRepeatability Metrics<\/strong>The<\/p>\n\n\n\n

This article uses a set of real-world test data to verify that:Domestic brand JCGK (Jingcheng Engineering)Direct Pressure Airtightness Tester<\/a>How does it perform in terms of repeatability accuracy?<\/strong><\/p>\n\n\n\n

I. What Is Repeatability?<\/h2>\n\n\n\n

The same product, the same tooling, the same environment,If the results remain consistent after multiple consecutive tests<\/strong>The<\/p>\n\n\n\n

The first measurement was 6 Pa, the second was 50 Pa, and the third was 20 Pa\u2014The equipment has stability issues.<\/strong>The<\/p>\n\n\n\n

After more than 10 consecutive measurements, the data consistently remained within a very narrow range\u2014The equipment has good repeatability.<\/strong>The<\/p>\n\n\n\n

II. Why Do Production Lines Place Greater Emphasis on Repeatability?<\/h2>\n\n\n\n

Production lines for new energy batteries, automotive parts, consumer electronics, medical devices, industrial pressure sensors, and other products may inspect thousands or even tens of thousands of items every day.<\/p>\n\n\n\n

The consequences of equipment with high volatility are immediate:<\/p>\n\n\n\n

The assessment results for the same product vary depending on the time.Good products are mistakenly classified as defective, and defective products are mistakenly classified as good. This results in large-scale rework, soaring costs, and a decline in customer trust.<\/strong>The<\/p>\n\n\n\n

Therefore, repeatability is not only a technical metric but also directly affects production costs and quality control.<\/p>\n\n\n\n

III. Test Conditions for This Test<\/h2>\n\n\n\n

Testing equipment<\/strong>: Jingcheng Engineering JCGK Direct Pressure Airtightness Tester<\/a><\/p>\n\n\n\n