The opening on the device for the instrument
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How are the hole sizes for temperature transmitters, pressure transmitters, level gauges, etc. on equipment determined? Are there any standards? For example, if one tank has a capacity of 10 m³ and another 20 m³, can the size of the pressure gauge port at both be DN25?
The hole sizes for installing instruments such as temperature transmitters, pressure transmitters, and level gauges in equipment are usually determined in accordance with relevant industry standards or the recommendations of the instrument manufacturers. The size of the opening needs to take into account factors such as the requirements for instrument installation, the pressure and volume of the equipment, and the properties of the fluid. For example, in the case of pressure gauges, the size of the opening can generally be determined based on the actual dimensions of the pipeline or equipment as well as the design requirements; DN15 or DN25, which are relatively small sizes, are usually sufficient to meet most needs. For storage tanks of different sizes (such as 10 m³ and 20 m³), if they have the same pressure rating, and the functions and installation methods of the instruments are identical, the same diameter can be used, such as DN25. Generally speaking, the specific dimensions should be determined based on the particular application scenario and equipment requirements; sometimes, the installation space on site and the ease of maintenance also need to be taken into consideration. It is recommended to consult the specific instrument supplier or review relevant design specifications for an accurate selection. .