What is air tightness testing?

Air tightness detector is an instrument used to test the sealing and waterproof performance of products. By inflating the product cavity, cutting off the air source, stabilizing the air pressure, analyzing the interior, calculating the product leakage pressure difference and judging whether the product leaks, it is also called air tightness leak detector, leakage tester, waterproof tester and sealing tester. The air tightness detector can be used in various industries and fields such as new energy, household appliances, automobile parts, consumer electronics, medical devices, safety lighting, valves and pipelines, wire connectors, etc. To ensure the safety and durability of products.

Practical application of air tightness detector in products of various industries

What are the advantages of air tightness detector? The air tightness detector has the following advantages:

Accurate measurement: the air tightness detector adopts micro differential pressure sensor and high-precision flowmeter, which can accurately measure the leakage quantity and leakage rate of products and avoid human error and subjective judgment.

Quick test: The air tightness tester can complete the test in a short time, improving the production efficiency and quality control level.

Simple operation sheet: the air tightness detector is simple and convenient to operate. Simply put the product into the test fixture and press the start button, and the test can be automatically performed and the test results can be displayed.

Non-destructive energy saving: the air tightness detector adopts non-destructive testing method, which will not cause damage or waste to the product and save materials and energy.

JCGK Jingcheng engineering air tightness detector

What types of air tightness detectors are there? According to the different detection principles and methods, air tightness detectors can be divided into the following categories:

Positive pressure type: the positive pressure type air tightness detector is to fill the inner cavity of the product with compressed air or other gases, observe the change of internal pressure after cutting off the gas source, and calculate the leakage amount and leakage rate. Positive pressure type is suitable for products with high requirements for the external environment, such as outdoor lamps, filter elements of water purifiers, etc.

Negative pressure type: negative pressure type air tightness detector is to vacuum the inner cavity of the product, observe the change of internal pressure after cutting off the vacuum source, and calculate the leakage quantity and leakage rate. The negative pressure type is suitable for automobiles, household appliances, medical devices and other products that have no special requirements for the external environment.

Differential pressure type: the differential pressure type air tightness detector is to fill the inner cavity of the product with air or other gases at a certain pressure, and then compare it with the stable reference cavity after cutting off the gas source, observe the change of pressure difference between them, and calculate the leakage amount and leakage rate. Differential pressure type is suitable for products with high test accuracy, such as electronic components, die castings, valves, etc.

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How to choose the air tightness detector? Understand the testing principle and method of waterproof and sealing equipment.

How to choose a suitable air tightness detector? When selecting an appropriate air tightness detector, the following factors need to be considered:

Test scope: According to the size, shape, structure and other characteristics of the product, select the appropriate test fixture and connection mode to ensure the stability and reliability in the test process.

Test accuracy: according to product leakage standards and quality requirements, select appropriate sensors and flowmeters to ensure the accuracy and repeatability of test results.

Test speed: according to the rhythm and efficiency requirements of the production line, choose the appropriate inflation and deflation speed and stabilization time to ensure the rapidity and continuity in the test process.

Test function: According to the processing and analysis requirements of test data, select appropriate functional modules such as display screen, storage mode, printing mode and communication mode to ensure the convenience and intelligence of the test process.

JCGK engineers customize air tightness testing solutions for customers.

How to use and maintain the air tightness detector correctly? Proper use and maintenance of air tightness tester should pay attention to the following points:

Before use: before use, check whether the equipment is in good condition, whether the power supply connection is normal, whether the pipeline is unobstructed, and conduct preheating and calibration operations.

In use: During use, operate according to the operating instructions, observe safety regulations, avoid contact with high temperature or high pressure parts, and handle abnormal situations in time.

After use: after use, turn off the power supply, cut off the gas source, clean up the dust or sundries on the surface and inside of the equipment, and properly keep the equipment and related materials.

Air tightness tester use training place

Want to know more detailed air tightness testing scheme and application cases, please pay attention to the air tightness of Jingcheng project.