What is the appropriate height for installing the thermometer used to measure the temperature of storage tanks? Are there any regulatory requirements?

The installation height of the temperature gauge in a storage tank usually depends on the type of tank, the medium stored, and the temperature measurement requirements. Here are some common specifications and requirements: Vertical storage tanks: Top: When measuring the temperature of the gas phase, the thermometer should be installed near the top of the tank. Middle: When measuring the liquid phase temperature, it is usually installed in the middle of the storage tank. Bottom: When measuring the temperature of the liquid phase at the bottom, the thermometer should be placed close to the bottom of the tank. Horizontal storage tank: Top: When measuring the temperature of the gas phase, the thermometer is installed at the top. Middle: When measuring the liquid phase temperature, it is usually installed in the middle of the storage tank. Bottom: When measuring the temperature of the liquid phase at the bottom, the thermometer should be placed close to the bottom of the tank. Spherical tank: Top: When measuring the gas phase temperature, the thermometer is installed at the top. Middle: When measuring the liquid phase temperature, it is usually installed in the middle of the storage tank. Bottom: When measuring the temperature of the liquid phase at the bottom, the thermometer should be placed close to the bottom of the tank. API 650 specifies the requirements: it is applicable to welded steel storage tanks and outlines the locations and requirements for installing thermometers. API 620: Applicable to large welded low-pressure storage tanks, and it also includes regulations regarding the installation of thermometers. GB 50341: A Chinese standard that specifies the design requirements for vertical cylindrical welded steel storage tanks, including the installation of thermometers. GB 50128: A Chinese standard applicable to the construction and acceptance of vertical cylindrical welded steel storage tanks, which also specifies requirements for thermometer installation. Other considerations: Medium properties: The temperature distribution may vary among different media, so the installation location needs to be adjusted according to the actual conditions. Operational requirements: Select an appropriate location based on the process requirements to ensure accurate temperature measurement. In summary, the installation height of the thermometer should be determined based on the type of storage tank, the properties of the medium, and operational requirements, in accordance with relevant standards. It is recommended to refer to the design documents and specification requirements of the specific project.