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Selection of test points (systems)

The selection of test points (systems) is a comprehensive process that requires consideration of multiple factors to ensure that the selected joints can meet the needs of practical applications. Here are some key selection points:

1、 The basic structure of pressure measuring joints
The test points (systems) is generally composed of a joint body, a cone, and a sealing element. The joint body is the part that connects the tested pipeline, the cone plays a sealing role, and the sealing element ensures the sealing performance. Therefore, when selecting, the first thing to ensure is that the structure of the joint is reasonable and easy to install and disassemble.

2、 Clarify application requirements
Type of medium: The chemical composition, corrosiveness, viscosity, and other physical properties of the tested medium can affect the material and sealing performance of the test points (systems). Therefore, when selecting, it is necessary to clarify the type of medium being tested.
Pressure range: Select the appropriate range and accuracy of the pressure measuring joint based on the pressure range of the system being tested. Ensure that the joint can accurately measure the required maximum and minimum pressure.
Work environment: Consider factors such as temperature, humidity, and corrosive gases in the work environment, and choose materials and seals that can withstand these environmental conditions.

3、 Choose the appropriate material
The materials of test points (systems) mainly include carbon steel, stainless steel, etc. Different materials have different corrosion resistance, high temperature resistance, and mechanical properties.

Carbon steel: structurally stable, low cost, high maturity.
Stainless steel: 304 stainless steel has good corrosion resistance and is suitable for common room temperature and medium high temperature ranges. For environments with higher temperatures or stronger corrosiveness, higher grades of stainless steel such as 316 can be chosen.

4、 Consider the type and specifications of the joint
Joint type: Choose the appropriate joint type according to actual needs, such as straight, curved, etc. Straight joints are suitable for straight connections, while curved joints are suitable for situations where the flow direction needs to be changed.
Sealing method: Select the appropriate sealing method according to the application scenario, work interface, sealing requirements, etc.
Specifications and dimensions: Ensure that the specifications and dimensions of the selected joint match the size and material of the tested pipeline. This includes thread specifications, length dimensions, etc. of the joint.

In summary, the selection of test points (systems) requires comprehensive consideration of multiple factors, including application requirements, material selection, joint type and specifications, and additional functions. By carefully analyzing and comparing the advantages and disadvantages of different options, the most suitable test points (systems) for practical applications can be selected.