Seeking advice on liquid level measurement in vacuum towers in oil refining production

Regarding liquid level measurement in vacuum towers in oil refining, traditional differential pressure transmitters may exhibit significant measurement errors in high-temperature, low-pressure environments as well as when the fluid is prone to condensation at low temperatures. Here are some possible alternative measurement methods: 1. Guided wave radar level gauge: This type of level gauge uses microwave measurement technology, and it is highly resistant to interference caused by changes in temperature and pressure; it is suitable for measuring liquid levels in high-temperature, high-pressure, or extreme environmental conditions. 2. Capacitive level gauge: A capacitive level gauge is a level measurement instrument that operates on the principle of changes in capacitor charge. Since no power is required, it is also suitable for high-temperature and high-pressure environments. 3. Magnetic flap level gauge: The magnetic flap level gauge uses a magnetic field to transmit level data; it is suitable for high-temperature and high-pressure environments and offers good protection, but it is not suitable for highly viscous fluids. 4. Level float gauge: The measurement principle of a level float gauge is simple; it converts the level of the liquid into mechanical signals through the upward and downward movement of a float, making it widely applicable. All of the above measurement methods can be considered, but for specific situations, it is also necessary to take into account the actual operating environment in order to assess the suitability, accuracy, and stability of various methods. After selecting the measurement method, regular calibration and maintenance are also required to ensure the accuracy of the measurement data. .