What types of air tightness testers are there in Shenzhen?Detailed classification and its advantages and disadvantages

Shenzhen is one of China's cutting-edge cities in science and technology, with various high-tech products emerging in endlessly.Among them, the air tightness tester, as one of the precision testing equipment, is widely used in electronics, automobiles, medical and other industries.Today we will talk about several common types of air tightness testers in the Shenzhen market, as well as their respective advantages and disadvantages.In this way, even if you are a complete "newbie", you can still have a certain understanding of this field, which will help you avoid detours when selecting and using an air tightness tester.

Speaking of air tightness tester, it is not actually a new high-tech gadget.As early as many years ago, it has been widely used in the field of industrial manufacturing.Simply put, the main function of the air tightness tester is to detect whether an object is well sealed to prevent the leakage of gas or liquid.Imagine if a car had a leak in its fuel system, that would be a safety hazard!If a medical syringe leaks, it’s not just a matter of showing off your unhappiness in WeChat Moments!

There are many trustworthy air tightness tester brands in Shenzhen, such as HiRes.Next, we will introduce in detail several common types of air tightness testers, as well as their advantages and disadvantages, to help you make an informed choice when purchasing.

1. Pressure decay type air tightness tester

The pressure decay type air tightness tester is a piece of equipment that is widely used and has mature technology.It mainly injects air of a certain pressure into the object to be tested, and then judges the air tightness based on changes in internal pressure over a period of time.

advantage:

• The operation is simple, just set the initial pressure and time.
• Can test various objects with complex shapes.
• The cost is relatively low.

shortcoming:

• The accuracy is limited, and may not be applicable especially in situations with high accuracy requirements.
• The test takes longer.

2. Flow type air tightness tester

Flow type air tightness tester is also one of the common types on the market.It determines air tightness by recording the gas flow through the object under test over a period of time.

advantage:

• It has high accuracy and can detect very small leaks.
• Test time is shorter.
• Gas flow changes can be monitored in real time.

shortcoming:

• The equipment is complex and the operation requirements are high.
• The cost is higher.

3. Differential pressure air tightness tester

The differential pressure air tightness tester judges the air tightness by comparing the pressure difference between two independent test air circuits.

advantage:

• Suitable for air tightness testing of small and micro products.
• High precision requirements can be achieved.

shortcoming:

• The testing environment needs to be strictly controlled.
• The cost is higher.

4. Helium mass spectrometry air tightness tester

The helium mass spectrometer air tightness tester uses helium as a tracer gas and detects leakage through a mass spectrometer. It is currently one of the most accurate air tightness testing methods.

advantage:

• Extremely accurate and can detect extremely small leaks.
• Suitable for demanding industrial applications such as aerospace.

shortcoming:

• The equipment is very expensive and the maintenance costs are high.
• Requires professional operation.

5. Water immersion air tightness tester

The water immersion air tightness tester judges the air tightness by immersing the object to be tested in water and observing whether bubbles emerge.

advantage:

• Operation is very intuitive and easy to observe.
• Suitable for preliminary leak detection and rough judgment.

shortcoming:

• Accurate testing is difficult to achieve.
• Not suitable for water-sensitive test objects.

6. Pressure change type air tightness tester

The pressure change air tightness tester mainly judges the air tightness by detecting the internal pressure change of the object to be tested.

advantage:

• Online real-time detection can be achieved.
• The structure is relatively simple and easy to maintain.

shortcoming:

• Not suitable for complex-shaped objects under test.
• Detection accuracy is greatly affected by the environment.

in conclusion

When selecting an air tightness tester, not only the detection accuracy and cost should be considered, but also the convenience of operation and ease of maintenance.There are various types of air tightness testers on the Shenzhen market, each type has its specific application areas, advantages and disadvantages.It is wise to choose the most suitable one based on actual testing needs.I hope this article can help you better understand and choose an air tightness tester.