1. Users can choose one without input and output ports.Sealing tester, it is necessary to use a separate instrument for sealing testing and does not need to be connected to other control systems.

2. When the internal volume of the sealing test is greater than 5l, the flow type should be selected as much as possible; while the internal volume of the workpiece is less than 5lSealing test, you can choose flow type or differential pressure type according to process requirements.

3. When there are many types of testing in the production line, each type requires different parameters. In this case, the user needs to choose an air tightness detector with channel function.

4. For workpiece testing that requires strict leakage indicators, be sure to choose one with good accuracy and high quality.Air tightness detector。

5. Since the sealing instrument uses a special control panel, it is important to choose sealing testers produced by companies with certain strength and strong viability.

The data of poor-quality detectors are not stable enough when repeatedly testing the same workpiece. In addition, there is a big difference between the test data just after the startup is warmed up and the test data after 1 hour of work. There will also be a big difference between the test data in the morning and the afternoon.

The latter two methods can only detect whether the system is leaking.The first five methods can detect the specific location of the leak.The first three methods are more intuitive and convenient, but some parts are inconvenient to inspect and trace leaks are difficult to detect, so they are only used for rough inspection.The halogen leak detector is very sensitive and can detect when the annual leakage of the refrigeration system exceeds 0.5g.However, because it can also detect the refrigerant leaking in the space around the system, the leakage location will be misjudged. The instrument is high in cost and expensive, so it is generally not used.Although the operation of halogen lamp inspection is slightly troublesome, it is the most commonly used due to its simple structure, low price and relatively high detection accuracy.