High-Precision Airtightness Tester - Automated Leak Testing Solutions

High-Precision Airtightness Tester: Technology Trends and Applications

Latest Automated Leak Testing Solutions in 2025

Author: Technical Department | Published: June 30, 2025

What Is an Airtightness Tester?

An airtightness tester is a device used to detect leaks in products and is widely used in industrial automated manufacturing. Using differential pressure, pressure decay, or helium detection methods, it can accurately determine the sealing integrity of a product. With rising industry standards, automated leak testers have become essential for ensuring product quality.

Application Fields

Seal testing of new energy battery packs
Airtightness testing of medical consumables
Leak detection for Bluetooth earbuds and waterproof wearables
Airtightness testing of automotive components
Leak testing of injection-molded and metal housings

Core Technology Trends

Trend 1: Enhanced Accuracy of Differential Pressure Testing

By adopting high-sensitivity differential pressure sensors, the minimum detectable leak rate can reach 0.05 Pa/s, suitable for micro-leak detection.

Trend 2: Integration of Automated Leak Testing Systems

Combining robotic arms and multi-station configurations, fully automated and continuous testing is achieved, improving production efficiency and reducing labor costs.

Common Testing Methods

Method	Applicable Products	Advantages	Limitations
Differential Pressure	Bluetooth earbuds, medical catheters	High precision, non-destructive	Sensitive to ambient temperature
Pressure Decay	Injection parts, enclosures	Simple structure, low cost	Lower precision
Helium Testing	Aerospace, vacuum components	Extremely high sensitivity	High equipment cost

Customer Case Study: Medical & Bluetooth Earbud Leak Testing

We provided a custom-designed airtightness testing system for a Bluetooth earbud manufacturer, achieving a cycle time of less than 2.5 seconds per unit and improving yield by 30%. In the medical industry, our fully automated differential pressure solution for disposable breathing tubes helped the client increase test efficiency by over three times.

Video: Fully Automated Airtightness Testing Process for Bluetooth Earbuds