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What are the main models of JCGK Leak Tester? Airtightness tester chapter, with selection guide

As a leading brand in the airtightness testing industry, JCGK has launched a variety of airtightness testers to meet the testing needs of different industries and different application scenarios. From basic single-channel airtightness testing to high-end multi-channel automated testing equipment, JCGK's product line covers a wide range of testing needs.

Training and explaining the instrument to customers

差压式气密性检测负值成因全解析：精诚工科梳理四大系统性干扰原因！

本文分析了差压式气密性测试出现负值的原因与解决方法。文章指出，负值并非产品漏气或仪器故障，而是标准端压力下降快于被测端、两侧比较关系反向的结果。导致负值的原因主要有四类：标准件微漏或密封老化、被测产品与标准腔容积差异过大、温度变化使两侧压力不同步、工装夹具或管路受压微变形。

What are the different methods of leak testing?

Quick Q&A: What Does an Air Tightness Tester Do? A Detailed Explanation of Its Working Principle and Industry Applications

This article systematically introduces, in a question-and-answer format, the working principles, testing methods, application scenarios, and key selection criteria for air tightness testers. It covers mainstream technical approaches such as the direct pressure method, differential pressure method, and flow method, and explains the differences between air tightness testers and water tightness testers, as well as their automation integration capabilities and the value of data traceability. It also showcases JCGK Jingcheng Engineering’s testing solutions across multiple industries, including new energy, automotive, and medical.

When the same product is tested twice, the results get lower each time—it’s not a problem with the airtightness equipment; it’s a flaw in the method.

This article explains that the phenomenon of initially high data readings followed by a gradual decrease in airtightness testing is not due to instrument malfunction, but rather to an improper testing method. The root cause lies in the elastic deformation that occurs when the product is pressurized for the first time; if testing continues without sufficient depressurization and recovery, the stress release process in the material will be superimposed on the leakage values, resulting in a systematic drift in the data. Standard procedures require complete depressurization, allowing sufficient recovery time, controlling temperature, and ensuring fixture consistency; only under these conditions can the repeatability of the equipment be truly evaluated.

The Importance of Data Compatibility in Leak-Tightness Testing Units

Quick Q&A: What is the difference between SCCM and mL/min? Unit Conversion and Application Scenarios for Leakage in Airtightness Test Instruments

This article introduces the multi-unit display feature of Jingcheng Engineering (JCGK) leak testers, explaining its value in resolving unit conversion issues across different engineering systems and enhancing equipment compatibility. It covers supported pressure/ flow units, application requirements for various roles, the advantages of multi-channel integration, data traceability, and MES integration capabilities, and provides recommendations on key considerations before purchasing.

Jingcheng Engineering’s Battery Housing Inspection Solution

Air Tightness, Hydrostatic Pressure, and Flow Rate Testing for New Energy Battery Cases: How Many Pieces of Equipment Are Needed for These Three Types of Tests?

This article presents a comprehensive solution for inspecting new energy battery casings and points out that airtightness testing alone is insufficient to meet the quality requirements for complex casings. For structures such as battery top and bottom covers, it is recommended to use Jingcheng Engineering’s dual-channel airtightness tester in conjunction with a dual-station fixture to improve mass production efficiency; at the same time, separate equipment for testing the water pressure resistance and flow rate of waterproof-breathable membranes must be configured. The article also emphasizes the importance of automated decision-making logic, data traceability management, and solution scalability, and outlines four core dimensions for evaluating testing solutions.

Quick Q&A: How to Choose Among the Top 10 Domestic Air Tightness Tester Brands? Why Is JCGK So Often Mentioned in the Industry?

This article systematically introduces the methodology for selecting domestically produced airtightness testers, using JCGK Jingcheng Engineering as an example, analyzing the technical characteristics and application scenarios of testing principles such as direct pressure, differential pressure, flow, volumetric, and negative pressure. The article emphasizes that repeatability is more important than accuracy and highlights the importance of custom fixture design and automation integration capabilities. It argues that the core of domestic substitution lies in total cost and implementation capabilities, rather than simple brand rankings.

A Comprehensive Testing Protocol for Waterproof and Breathable Membrane Materials

Can a waterproof and breathable membrane water-barrier tester only measure one pressure level? Jingcheng Engineering’s multi-stage pressure solution is here.

This article introduces the multi-stage pressure water-blocking and air-permeability tester for waterproof and breathable membranes launched by JCGK. This device overcomes the limitations of traditional single-pressure-point testing by automatically performing continuous multi-stage pressure testing. It simultaneously records pressure, leakage volume, and results for each stage, and supports visual analysis using an electron microscope, providing more comprehensive performance boundary data for the R&D validation and quality control of waterproof and breathable membranes.

Roadmap for Upgrading the Leak Test Solution

Quick Q&A: What Is a Luminaire Airtightness Test? A Detailed Explanation of the Principles of Security Lighting Sealing Tests and the Direct Pressure Method

Using the security lighting industry as an example, this article systematically introduces the necessity of airtightness testing and the application solutions for Jingcheng Engineering’s direct-pressure airtightness tester. Covering everything from testing principles, fixture design, and data management to automation integration, the article comprehensively explains how to elevate airtightness testing from a standalone quality inspection task to a quality control checkpoint on the production line, while providing a decision-making framework to assist companies in selecting the appropriate equipment.

Software Copyright Certificate – Automated Control Software for Interlinked Airtightness Testing on Production Lines

Jingcheng Engineering Secures Three More Software Copyrights: How Did the Airtightness Tester Evolve from a “Standalone Instrument” to an “Intelligent Production Line System”?

This article reports that Shenzhen Jingcheng Engineering Technology Co., Ltd. was granted three computer software copyrights on August 19, 2026, focusing on assembly line automation control, comprehensive airtightness and pressure resistance testing of seals, and testing of chamber air resistance and pressure resistance limits. The article notes that competition in the airtightness testing equipment sector is shifting from hardware specifications to software algorithms and automation integration capabilities, marking the evolution of domestically produced testing equipment from “instruments” to “testing systems.”