What are the classification of air tightness tester?

In industrial production, air tightness detector is widely used. It is a kind of test equipment used to detect and measure the sealing and waterproof performance of various products, so as to ensure that the tested parts do not have the defects of water leakage or air leakage, and ensure the quality and life of products. It can be said that the air tightness test is inseparable from the mobile phone we use every day to the car we ride.

Air tightness test, also known as waterproof test and sealing test.

There are many different types of air tightness testers in the market, each of which has its own advantages and disadvantages. Air tightness detectors can be classified according to different classification standards: according to different detection principles, they can be divided into direct pressure detectors, negative pressure detectors, quantitative detectors, flow detectors, differential pressure detectors, positive and negative pressure detectors, blasting detectors and so on.

According to the different detection objects, it can be divided into: mobile phone air tightness detector, wire harness air tightness detector, die-casting air tightness detector, lithium battery air tightness detector and so on.

According to the degree of automation, it can be divided into manual air tightness detector, semi-automatic air tightness detector and full-automatic air tightness detector.

According to the different application environment, it can be divided into: new energy air tightness detector, household appliance air tightness detector, automobile air tightness detector, electronic air tightness detector, medical device air tightness detector and so on.

According to the different functions and performance of products, it can be divided into: portable air tightness detector, desktop air tightness detector, high-precision air tightness detector and so on.

Air tightness detector suitable for different products

The common air tightness tester can be divided into the following three methods: bubble method test: smear or spray the leak detection liquid outside the detected product to see if the liquid enters the detected object. The representative instruments of bubble method include water tightness detector and waterproof experimental box. , also known as water inspection.

Waterproof test chamber, also known as wet test chamber.

Advantages: simple operation and low cost.

Disadvantages: low accuracy, only large hole leakage can be detected, but not small hole leakage. It is not suitable for testing high-pressure vessels, and the products need to be dried after testing. The steps are cumbersome, time-consuming and laborious. This method is suitable for testing large equipment and components, and has limitations.

Pressure drop method test: the air tightness is tested by pressurizing and depressurizing the product to be tested and observing whether the pressure drops. The representative instruments of pressure drop method include direct pressure air tightness tester and gas flow tester. , also known as gas detection.

Schematic diagram of pressure drop method test

Advantages: high precision, simple operation, wide application, fast detection speed, and even a product can be detected in a few seconds.

Disadvantages: tiny leakage can't be detected, and the leakage point of the inspected product can't be found accurately, so a booster pump needs to be used under high pressure.

Mass spectrometry test: this air tightness tester applies vacuum to the tested product and measures the vacuum attenuation generated within a set time. This method can detect the smallest leakage by measuring the vacuum drop. The representative instruments of mass spectrometry include helium mass spectrometer leak detector and hydrogen mass spectrometer leak detector. , also known as helium detection.

Helium mass spectrometer leak detector on the market

Advantages: high precision, small leakage detection, and high pressure, large volume and closed container products detection.

Disadvantages: Special helium mass spectrometer leak detector is needed, and the cost is high.

In modern industrial manufacturing, air tightness detector has become an indispensable tool. The invention can quickly and accurately detect the sealing performance of products and can detect tiny leakage. This can help factory manufacturers improve product quality and process efficiency, and reduce product failure rate and maintenance cost.

If you want to ensure that your products meet the highest quality standards, please choose the appropriate air tightness detector according to the material, shape, size, application scenario, accuracy requirements of air tightness test, procurement budget and other factors of your tested products.

Want to know more detailed air tightness testing scheme and product parameters, please search for attention: sincere engineering air tightness.

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