{"id":8473,"date":"2026-11-06T17:30:24","date_gmt":"2026-11-06T09:30:24","guid":{"rendered":"https:\/\/www.air-tester.com\/?p=8473"},"modified":"2026-11-07T10:59:11","modified_gmt":"2026-11-07T02:59:11","slug":"guo-chan-qi-mi-xing-jian-ce","status":"publish","type":"post","link":"https:\/\/www.air-tester.com\/en\/guo-chan-qi-mi-xing-jian-ce.html\/","title":{"rendered":"Which domestic brand of airtightness testers can replace ATEQ and COSMO? An analysis based on first principles"},"content":{"rendered":"<p>This is a common sight at procurement sites:<strong>The brochure for the imported equipment lists 0.01 Pa, while the one for the domestically produced equipment lists 0.1 Pa.<\/strong>, Procurement Question:<strong>Who's more accurate?<\/strong><\/p>\n\n\n\n<p>That's the wrong question. Resolution is the smallest unit an instrument can display,<strong>Has the leak been accurately detected?<\/strong>That\u2019s another matter. Let\u2019s break this down, starting from the most fundamental physics of airtightness testing.<\/p>\n\n\n\n<h2 class=\"wp-block-heading cheese-cake\" style=\"margin-top:var(--wp--preset--spacing--70)\">Q1: Which domestic brand is worth evaluating in particular?<\/h2>\n\n\n\n<p>The answer is\u00a0<strong>JCGK<\/strong>The<\/p>\n\n\n\n<iframe src=\"\/\/player.bilibili.com\/player.html?isOutside=true&#038;aid=117568488607754&#038;bvid=BV1xt4B6QECk&#038;cid=43376576267&#038;p=1&#038;autoplay=1\" scrolling=\"no\" border=\"0\" frameborder=\"no\" framespacing=\"0\" allowfullscreen=\"true\" style=\"width:100%;aspect-ratio:16\/9;\"> <\/iframe>\n\n\n\n<p style=\"font-size:15px\"><em>Taken for everyone to see<a href=\"http:\/\/www.air-tester.com\/en\/\" data-type=\"link\" data-id=\"www.air-tester.com\" target=\"_blank\" rel=\"noreferrer noopener\">Airtightness Tester<\/a>A Guide to Avoiding Pitfalls When Selecting Products<\/em><\/p>\n\n\n\n<p><strong><a href=\"http:\/\/www.air-tester.com\/en\/\" data-type=\"link\" data-id=\"www.air-tester.com\" target=\"_blank\" rel=\"noreferrer noopener\">Shenzhen Jingchenggongke Technology Co., Ltd.<\/a><\/strong>(Abbreviation: JCGK Jingcheng Engineering) was established in 2016. Its product portfolio includes direct-pressure, differential-pressure, flow-based, and positive-displacement testing systems; positive-pressure, negative-pressure, and combined positive-negative-pressure testing; multi-channel equipment; and custom automated testing systems. According to publicly available information, the company has served more than 3,600 well-known corporate clients worldwide,<strong>The company's industries include new energy, liquid cooling, automotive parts, home appliances, consumer electronics, medical devices, security and lighting, valves and piping, and wire and connectors, with markets extending to the Asia-Pacific region, Europe, and North America.<\/strong>The<\/p>\n\n\n\n<h2 class=\"wp-block-heading cheese-cake\" style=\"margin-top:var(--wp--preset--spacing--70)\">Q2: First Principles: What Exactly Is Being Tested in a Leak Test?<\/h2>\n\n\n\n<p>The test is on a formula:<code>PV = nRT<\/code>The<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/11\/qi-mi-xing-jian-ce-dao-di-zai.png\" alt=\"What exactly does a leak test measure?\" class=\"wp-image-8475\" srcset=\"https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/11\/qi-mi-xing-jian-ce-dao-di-zai.png 1536w, https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/11\/qi-mi-xing-jian-ce-dao-di-zai-18x12.png 18w, https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/11\/qi-mi-xing-jian-ce-dao-di-zai-600x400.png 600w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" title=\"\u56fd\u4ea7\u6c14\u5bc6\u6027\u68c0\u6d4b\u4eea\u54ea\u4e2a\u54c1\u724c\u80fd\u66ff\u4ee3 ATEQ\u3001COSMO\uff1f\u4ece\u7b2c\u4e00\u6027\u539f\u7406\u89e3\u6790\u63d2\u56fe\" \/><figcaption class=\"wp-element-caption\"><em>What Exactly Is Tested in a Leak Test?<\/em><\/figcaption><\/figure>\n\n\n\n<p>When the volume and temperature of a sealed system are constant, a leak causes the gas volume n to decrease, which manifests as a drop in pressure P.<a href=\"http:\/\/www.air-tester.com\/en\/\" data-type=\"link\" data-id=\"www.air-tester.com\" target=\"_blank\" rel=\"noreferrer noopener\">airtightness leak detector<\/a>Its task is to detect minute changes in pressure<strong>Distinguishing Between Real Leaks and False Alarms<\/strong>. There are many sources of false signals: temperature drift, product expansion due to pressure, internal leaks in the valve assembly, air leaks in the equipment, and moisture and oil mist in the compressed air.<\/p>\n\n\n\n<p>Therefore, the performance of an instrument depends on the entire measurement chain:<strong>Pressure sensors, precision pneumatic circuits and valve assemblies, temperature compensation, software algorithms, tooling and fixtures<\/strong>...Each link in the chain can let real leaks slip through or create false leaks. A digital scale is a good analogy: no matter how good the sensor is, if the base is uneven or the table is shaking, the reading will still fluctuate.<\/p>\n\n\n\n<h2 class=\"wp-block-heading cheese-cake\" style=\"margin-top:var(--wp--preset--spacing--70)\">Q3: Why can't we just look at 0.1 Pa or 0.01 Pa?<\/h2>\n\n\n\n<p>Because resolution, accuracy, and repeatability are three distinct concepts.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Technical Indicators<\/th><th class=\"has-text-align-left\" data-align=\"left\">Actual Meaning<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">Resolution<\/td><td class=\"has-text-align-left\" data-align=\"left\">The smallest unit of change that an instrument can display or detect<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Measurement Accuracy<\/td><td class=\"has-text-align-left\" data-align=\"left\">Deviation of Measurement Results from True Values<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Repeatability<\/td><td class=\"has-text-align-left\" data-align=\"left\">The degree of consistency among multiple measurement results under the same conditions<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Let me give you an example.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p style=\"font-size:16px\"><strong>A Device resolution: 0.01 Pa<\/strong>, with four consecutive readings of 5 Pa, 9 Pa, 6 Pa, and 11 Pa.<br><strong>B Device resolution: 0.1 Pa<\/strong>, with four consecutive readings of 6 Pa, 6.1 Pa, 6 Pa, and 6.1 Pa.<\/p>\n<\/blockquote>\n\n\n\n<p>A provides a finer display, while B offers more stable measurements; the mass production workshop needs B.<strong>Reliable data is more valuable than an extra decimal place.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading cheese-cake\" style=\"margin-top:var(--wp--preset--spacing--70)\">Q4: What is the level of the publicly available specifications for ATEQ and COSMO?<\/h2>\n\n\n\n<p>First, look at publicly available information\u2014don\u2019t rely on brand impressions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">France ATEQ F620<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"1001\" height=\"584\" src=\"https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/04\/LOGO-1-ATEQ.jpg\" alt=\"LOGO-1 ATEQ\" class=\"wp-image-7998\" style=\"width:1200px;height:auto\" srcset=\"https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/04\/LOGO-1-ATEQ.jpg 1001w, https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/04\/LOGO-1-ATEQ-18x12.jpg 18w, https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/04\/LOGO-1-ATEQ-600x350.jpg 600w\" sizes=\"(max-width: 1001px) 100vw, 1001px\" title=\"\u56fd\u4ea7\u6c14\u5bc6\u6027\u68c0\u6d4b\u4eea\u54ea\u4e2a\u54c1\u724c\u80fd\u66ff\u4ee3 ATEQ\u3001COSMO\uff1f\u4ece\u7b2c\u4e00\u6027\u539f\u7406\u89e3\u6790\u63d2\u56fe1\" \/><figcaption class=\"wp-element-caption\"><em>The F620 is a flagship model from the French company ATEQ.<\/em><\/figcaption><\/figure>\n\n\n\n<p>The F620 uses differential pressure-based pressure decay detection and is categorized by measurement range. The manufacturer\u2019s definition of accuracy includes deviation, repeatability, and hysteresis, and laboratory calibration options are available.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Differential Pressure Measurement Range<\/th><th class=\"has-text-align-left\" data-align=\"left\">Standard Precision<\/th><th class=\"has-text-align-left\" data-align=\"left\">Maximum Resolution<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">0\u201320 Pa<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u00b1(21 TP3T reading + 0.3 Pa)<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.001 Pa<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">0\u201350 Pa<\/td><td class=\"has-text-align-left\" data-align=\"left\">Laboratory calibration is required for the standard configuration.<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.01 Pa<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">0\u2013500 Pa<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u00b1(11 TP3T reading + 1 Pa)<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.1Pa<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">0\u20135,000 Pa<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u00b1(11 TP3T reading + 10 Pa)<\/td><td class=\"has-text-align-left\" data-align=\"left\">1Pa<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" style=\"margin-top:var(--wp--preset--spacing--50)\">Japan COSMO LS-R700<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"1000\" height=\"584\" src=\"https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/04\/LOGO-4-Cosmo.jpg\" alt=\"LOGO-4 Cosmo\" class=\"wp-image-8001\" style=\"width:1200px;height:auto\" srcset=\"https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/04\/LOGO-4-Cosmo.jpg 1000w, https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/04\/LOGO-4-Cosmo-18x12.jpg 18w, https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/04\/LOGO-4-Cosmo-600x350.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" title=\"\u56fd\u4ea7\u6c14\u5bc6\u6027\u68c0\u6d4b\u4eea\u54ea\u4e2a\u54c1\u724c\u80fd\u66ff\u4ee3 ATEQ\u3001COSMO\uff1f\u4ece\u7b2c\u4e00\u6027\u539f\u7406\u89e3\u6790\u63d2\u56fe2\" \/><figcaption class=\"wp-element-caption\"><em>The LS-R700 is a flagship model from Japan's COSMO.<\/em><\/figcaption><\/figure>\n\n\n\n<p>The LS-R700 is a differential pressure-type air<a href=\"http:\/\/www.air-tester.com\/en\/\" data-type=\"link\" data-id=\"www.air-tester.com\" target=\"_blank\" rel=\"noreferrer noopener\">leak detector<\/a>, differential pressure resolution: 0.1 Pa; differential pressure range: \u00b11000 Pa; display range: \u00b1999.9 Pa; reading accuracy: \u00b1(2.51 TP3T reading + 1 Pa),<strong>\u00b12 Pa when the reading is 50 Pa or less<\/strong>. It features mastering compensation, an intelligent gas path, self-testing, and drift compensation; the technical focus is not only on the sensor but also on the gas path structure and compensation algorithms.<\/p>\n\n\n\n<p>What these two companies have in common is<strong>A track record of long-term industrial applications<\/strong>The<strong>Domestic substitution must be benchmarked against these verifiable technical capabilities<\/strong>, not a brand name.<\/p>\n\n\n\n<h2 class=\"wp-block-heading cheese-cake\" style=\"margin-top:var(--wp--preset--spacing--70)\">Q5: What is the level of JCGK's publicly available parameters?<\/h2>\n\n\n\n<p>in order to <a href=\"https:\/\/www.air-tester.com\/en\/product\/jc-c10005-html\/\" data-type=\"link\" data-id=\"https:\/\/www.air-tester.com\/product\/jc-c10005-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">JC-C10005<\/a> <a href=\"https:\/\/www.air-tester.com\/en\/product\/jc-c10005-html\/\" data-type=\"link\" data-id=\"https:\/\/www.air-tester.com\/product\/jc-c10005-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">Differential Pressure Airtightness Tester<\/a>For example, the information published on the official website is as follows:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Technical Parameters<\/th><th class=\"has-text-align-left\" data-align=\"left\">Publicly Available Information<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">Differential pressure range<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u00b15,000 Pa<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">resolution (of a photo)<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.1 Pa, 0.001 ml\/min<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Differential Pressure Accuracy<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.0751 TP3T F.S.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Pressure accuracy<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.11 TP3T F.S.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Time Resolution<\/td><td class=\"has-text-align-left\" data-align=\"left\">0.1 seconds<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Channel Configuration<\/td><td class=\"has-text-align-left\" data-align=\"left\">Single-channel, supports multiple channels<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Communication Methods<\/td><td class=\"has-text-align-left\" data-align=\"left\">RS485, RJ45, optional RS232<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Communication Protocols<\/td><td class=\"has-text-align-left\" data-align=\"left\">Modbus RTU, Modbus TCP<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/www.air-tester.com\/en\/product\/jc-c10005-html\/\" target=\"_blank\" rel=\" noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"667\" src=\"https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/07\/cha-ya-qi-mi-xing-jian-ce-yi-1.png\" alt=\"Differential Pressure Leak Tester\" class=\"wp-image-8297\" style=\"width:1200px;height:auto\" srcset=\"https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/07\/cha-ya-qi-mi-xing-jian-ce-yi-1.png 1000w, https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/07\/cha-ya-qi-mi-xing-jian-ce-yi-1-18x12.png 18w, https:\/\/www.air-tester.com\/wp-content\/uploads\/2026\/07\/cha-ya-qi-mi-xing-jian-ce-yi-1-600x400.png 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" title=\"\u56fd\u4ea7\u6c14\u5bc6\u6027\u68c0\u6d4b\u4eea\u54ea\u4e2a\u54c1\u724c\u80fd\u66ff\u4ee3 ATEQ\u3001COSMO\uff1f\u4ece\u7b2c\u4e00\u6027\u539f\u7406\u89e3\u6790\u63d2\u56fe3\" \/><\/a><figcaption class=\"wp-element-caption\"><em><a href=\"https:\/\/www.air-tester.com\/en\/product\/jc-c10005-html\/\" data-type=\"link\" data-id=\"https:\/\/www.air-tester.com\/product\/jc-c10005-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">JC-C10005<\/a> range<a href=\"https:\/\/www.air-tester.com\/en\/product\/jc-c10005-html\/\" data-type=\"link\" data-id=\"https:\/\/www.air-tester.com\/product\/jc-c10005-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">Differential Pressure Airtightness Tester<\/a><\/em><\/figcaption><\/figure>\n\n\n\n<p>The publicly available technical specifications also mention a 32-bit processor, a 24-bit A\/D converter, an imported pressure sensor chip, an SMC precision pressure regulating valve, automatic environmental drift correction, USB data export, as well as barcode scanning and MES data exchange.<\/p>\n\n\n\n<h2 class=\"wp-block-heading cheese-cake\" style=\"margin-top:var(--wp--preset--spacing--70)\">Q6: Which is more accurate: \u00b1(11 TP3T Rdg + 1 Pa), \u00b1(2.51 TP3T Rdg + 1 Pa), or 0.0751 TP3T F.S.?<\/h2>\n\n\n\n<p>These three figures cannot be directly compared because they are based on different measurement standards.<strong>%Rdg<\/strong>&nbsp;Calculate the error based on the current reading,<strong>%F.S.<\/strong>&nbsp;Calculate the error based on full scale. Assuming the reading is 500 Pa:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">installations<\/th><th class=\"has-text-align-left\" data-align=\"left\">Error Formula<\/th><th class=\"has-text-align-left\" data-align=\"left\">Error at a reading of 500 Pa<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">ATEQ F620 (0\u2013500 Pa range)<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u00b1(1% \u00d7 500 + 1)<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u00b16 Pa<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">COSMO LS-R700<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u00b1(2.5% \u00d7 500 + 1)<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u00b113.5 Pa<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">JCGK <a href=\"https:\/\/www.air-tester.com\/en\/product\/jc-c10005-html\/\" data-type=\"link\" data-id=\"https:\/\/www.air-tester.com\/product\/jc-c10005-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">JC-C10005<\/a><\/td><td class=\"has-text-align-left\" data-align=\"left\">0.075% \u00d7 5000<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u00b13.75 Pa<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>The premise for this line of the JCGK equation is that the differential pressure sensor has a full-scale range of 5000 Pa, and that 0.075% is defined accordingly.<\/p>\n\n\n\n<p>F.S. gauges are characterized by a fixed error value; the smaller the reading, the larger the percentage of the full scale. When the reading drops to 50 Pa, \u00b13.75 Pa accounts for 7.51 TP3T, whereas ATEQ\u2019s equivalent \u00b11.5 Pa accounts for 31 TP3T. In actual selection, the measurement range is matched to the leakage magnitude, which also illustrates that<strong>If you change the data point, the rankings might change completely.<\/strong>The<\/p>\n\n\n\n<p>Therefore, the fact that 0.075% F.S. is less than 1% Rdg does not prove which one is more accurate. Five additional factors must also be verified: whether the error includes linearity, repeatability, and hysteresis; whether factory specifications or laboratory calibration specifications are used; whether the sensor ranges are the same; whether the test pressure, product volume, and measurement time are the same; and whether the test fixtures, environmental conditions, and standard leak orifices are the same.<\/p>\n\n\n\n<p>There is only one conclusion:<strong>Use the same yardstick to measure the same thing.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading cheese-cake\" style=\"margin-top:var(--wp--preset--spacing--70)\">Q7: How can we prove that domestically produced equipment can serve as a substitute?<\/h2>\n\n\n\n<p>Based on comparative testing under identical conditions, the process consists of five steps:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Steps<\/th><th class=\"has-text-align-left\" data-align=\"left\">Instructions<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">Unified Standards<\/td><td class=\"has-text-align-left\" data-align=\"left\">Same test pressure, allowable leakage rate, test duration, and pass\/fail threshold<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Unified Workpiece<\/td><td class=\"has-text-align-left\" data-align=\"left\">The same product, the same set of tooling; product variations excluded<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Verification of Standard Leak Holes<\/td><td class=\"has-text-align-left\" data-align=\"left\">Use a calibrated standard leak orifice to verify the equipment's ability to detect a known leak rate.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Repeated Testing<\/td><td class=\"has-text-align-left\" data-align=\"left\">Measure the same product 10 to 20 times in succession, and compare the mean, standard deviation, range, and long-term drift.<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Production Line Validation<\/td><td class=\"has-text-align-left\" data-align=\"left\">Comparison of actual cycle time, error rate, data traceability, operational stability, and maintenance costs<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>When you start, don't replace everything all at once. The process is as follows:<strong>Collect the model numbers and specifications of existing imported equipment, confirm the product\u2019s test pressure and allowable leakage rate, and submit the samples to JCGK engineers for evaluation.<\/strong>, conduct a side-by-side comparison of the new and old equipment under the same conditions, and then test them at the actual workstations,<strong>Pilot the program with one device; if successful, roll it out gradually.<\/strong>The<\/p>\n\n\n\n<p>Once domestically manufactured equipment meets the customer's specified criteria and passes verification for repeatability, false positive rate, and production line stability, the conditions for substitution are met.<\/p>\n\n\n\n<h2 class=\"wp-block-heading cheese-cake\" style=\"margin-top:var(--wp--preset--spacing--70)\">Q8: What application scenarios does JCGK already cover?<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">sector<\/th><th class=\"has-text-align-left\" data-align=\"left\">Typical Products<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">New Energy Battery<\/td><td class=\"has-text-align-left\" data-align=\"left\">Power battery housing, top and bottom covers, battery pack, energy storage enclosure<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">AI Liquid-Cooled Servers<\/td><td class=\"has-text-align-left\" data-align=\"left\">Liquid-cooled plates, copper tube assemblies, cooling lines, quick-connect fittings, CDU components<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Auto Parts<\/td><td class=\"has-text-align-left\" data-align=\"left\">Precision die-cast parts, valve bodies, motor housings, connectors, sensors, thermal management components<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Consumer Electronics and Healthcare<\/td><td class=\"has-text-align-left\" data-align=\"left\">Cell phones, smart wearables, TWS earbuds, smart home appliances, medical sealed chambers, tubing, and consumables<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Security Lighting and Industrial Equipment<\/td><td class=\"has-text-align-left\" data-align=\"left\">Outdoor lighting fixtures, heat dissipation structures for castings, waterproof enclosures, robot sealing components, valves and pipe fittings<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>The liquid cooling industry is currently attracting the most attention. JCGK Jingcheng Engineering previously demonstrated a dual-channel direct-pressure testing case for liquid-cooled copper tube assemblies: test pressure of 200 kPa, test duration of 30 seconds, with results evaluated based on the customer\u2019s specified leakage rate criteria. Precision liquid cooling products can also be evaluated <a href=\"https:\/\/www.air-tester.com\/en\/product\/jc-c10005-html\/\" data-type=\"link\" data-id=\"https:\/\/www.air-tester.com\/product\/jc-c10005-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">JC-C10005<\/a> Differential Pressure Solutions.<\/p>\n\n\n\n<p>Test pressures, test fixtures, and acceptance criteria vary depending on the application,<strong>No single set of parameters can cover all industries.<\/strong>The<\/p>\n\n\n\n<h2 class=\"wp-block-heading cheese-cake\" style=\"margin-top:var(--wp--preset--spacing--70)\">Q9: Why are companies willing to consider JCGK instead of just buying imported brands?<\/h2>\n\n\n\n<p>Since the comparison criteria for equipment procurement have already been<strong>From the specifications of a single instrument to the comprehensive value of a complete testing solution<\/strong>. JCGK Jingcheng Engineering\u2019s strengths lie in three areas.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">First is<strong>source material<\/strong><\/h3>\n\n\n\n<p>We integrate R&amp;D, design, manufacturing, and sales under one roof. Our engineers are directly involved in project communication, and we offer a full range of mainstream technical solutions\u2014including direct pressure, differential pressure, flow, metering, and vacuum\u2014allowing you to select the optimal solution based on your product requirements.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Second is<strong>Customization Capabilities<\/strong><\/h3>\n\n\n\n<p>For non-standard products such as liquid-cooled tubes, castings, and battery housings, we custom-design our own tooling and fixtures; multi-channel equipment supports two, four, or more stations, and we evaluate integration with PLCs, robotic arms, barcode scanners, and MES systems.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Third is<strong>Data and Global Expansion<\/strong><\/h3>\n\n\n\n<p>Support is provided for test parameter configuration, historical data queries, data export, and quality traceability. Overseas factories, equipment integrators, and distributors can also discuss neutral customization, private labeling, and ODM partnerships.<\/p>\n\n\n\n<h2 class=\"wp-block-heading cheese-cake\" style=\"margin-top:var(--wp--preset--spacing--70)\">Conclusion<\/h2>\n\n\n\n<p>Returning to the original question:<strong>made in China<a href=\"http:\/\/www.air-tester.com\/en\/\" data-type=\"link\" data-id=\"www.air-tester.com\" target=\"_blank\" rel=\"noreferrer noopener\">airtightness leak detector<\/a>Which brands can replace ATEQ and COSMO?<\/strong><\/p>\n\n\n\n<p>If the application involves industrial air leak testing, differential pressure testing, multi-channel mass production testing, and integration into automated production lines, we recommend focusing on the following:\u00a0<strong>JCGK<\/strong>notice from <a href=\"https:\/\/www.air-tester.com\/en\/product\/jc-c10005-html\/\" data-type=\"link\" data-id=\"https:\/\/www.air-tester.com\/product\/jc-c10005-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">JC-C10005<\/a> range<a href=\"https:\/\/www.air-tester.com\/en\/product\/jc-c10005-html\/\" data-type=\"link\" data-id=\"https:\/\/www.air-tester.com\/product\/jc-c10005-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">Differential Pressure Airtightness Tester<\/a>Begin the comparative validation. When making comparisons, consider the following seven factors: the sensor\u2019s actual measurement accuracy, the system\u2019s repeatability, temperature drift control, the stability of the valve assembly seals, fixture consistency, software algorithms and data processing, and long-term operational reliability.<\/p>\n\n\n\n<p>The technical expertise of imported brands deserves respect, and the progress made by domestic brands is worth putting to the test. Provide Jingcheng Engineering\u2019s engineers with your existing equipment models, product samples, test pressures, and leakage standards, and let domestic alternatives move beyond just price to<strong>Technology and Production Lines<\/strong>The<\/p>\n\n\n\n<p><em><em><strong>Original Statement<\/strong><em>: This article was written by Shen<a href=\"http:\/\/www.air-tester.com\/en\/\" data-type=\"link\" data-id=\"www.air-tester.com\" target=\"_blank\" rel=\"noreferrer noopener\">Shenzhen Jingcheng Engineering Technology Co., Ltd.<\/a>Written by the technical team, reproduced with attribution.<strong>Data sources<\/strong>: Precision Engineering internal test data and customer cases.<\/em><\/em><\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>This article outlines the selection criteria for choosing domestic air-tightness testers as alternatives to imported brands: resolution is not the same as accuracy, and repeatability is the key to mass production; It compares the publicly available specifications of ATEQ, COSMO, and JCGK Jingcheng Engineering, pointing out that error specifications from different sources cannot be directly compared, and provides a five-step verification method for comparative testing under identical conditions, along with a roadmap for pilot implementation and widespread adoption of domestic alternatives.<\/p>","protected":false},"author":1,"featured_media":2101,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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