List of articles related to Airtightness Tester - Precision Engineering Airtightness

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.

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.”

Direct-Pressure_Single-Channel_Outdoor Signal Box 2

Airtightness Tester for Telecommunications Signal Boxes

Airtightness Tester for Telecommunications Signal Boxes: Jingcheng Engineering Single-Channel Direct Pressure

Leak-Tightness Testing in the Liquid-Cooled Heat Dissipation Industry

Quick Q&A: How Are Leak Tests Conducted on Liquid-Cooling Plates and Copper Tube Assemblies? Jingcheng Engineering’s Comprehensive Guide to Applications in the Liquid-Cooling Industry

This article provides a systematic overview of technical solutions and key selection criteria for airtightness testing in the liquid cooling industry. For products such as liquid cooling plates and copper tube assemblies, JCGK employs a combined solution consisting of “testing instruments + custom fixtures + multi-channel testing + automation interfaces,” The core of this approach involves verifying the sealing reliability of enclosed flow channels using either the direct pressure method or the differential pressure method. It emphasizes that in mass production scenarios, six key factors—test pressure, leakage standards, product volume, testing cycle time, fixture design, and automation interfaces—must be comprehensively considered.

Applications of JCGK Leak Detection Equipment from Jingcheng Engineering in the Automotive Industry: From Component Testing to Supply Chain Collaboration

This article analyzes the reasons behind the surge in demand for airtightness testing in the new energy vehicle industry: Sealing requirements for new energy vehicles are far stricter than those for gasoline-powered vehicles, involving several new critical systems such as battery packs, liquid cooling systems, and thermal management. The article introduces testing methods such as direct pressure, differential pressure, and flow rate testing, emphasizing that automated testing and data traceability have become essential industry requirements. It also highlights the comprehensive solution capabilities of Shenzhen Jingcheng Engineering Technology Co., Ltd. (JCGK) as an industry leader.