Liquid level measurement for LNG storage tanks
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What type of level transmitter should be used for measuring the liquid level in LNG storage tanks? Is it necessary to use a differential pressure level transmitter? What are the reasons for inaccurate measurements by differential pressure level transmitters?
LNG spherical tank level gauges: servo, radar, and magnetostrictive types are all suitable; however, not many LNG manufacturers use radar technology, while SABB does.
Pressure type is selected for LNG tank level measurement
In differential pressure level measurement, it is necessary to prevent the mixing of gas and liquid phases inside the pressure guiding tube. When using a differential pressure level gauge to measure the level of LNG, how can it be ensured that the pressure guiding tube on the high-pressure side is filled entirely with gas, without any gas-liquid mixture?
Senior, you always say things that only a few people can understand, but the meaning behind them is clear! Haha. I said I understood everything…………
Principles for installing pressure transfer tubes: When measuring gas pressure, there should be no liquid in the pressure transfer tube; when measuring liquid pressure, there should be no bubbles in the pressure transfer tube. Since the gas phase and liquid phase are not separated, can a pressure guide tube transfer pressure in equal amounts?
A servo will do; E+H, 10W is sufficient.
The answer is upstairs. . There are many models based on LNG servos; you might want to take a look at Endress+Hauser’s E+H series. Rosemount does not produce servos
I’ve consulted with many manufacturers of LNG storage tanks, and differential pressure level gauges are still widely used in LNG applications. I can’t figure it out.
Servo is sufficient; there are countless application examples. . .
Thank you for the advice! However, the company has been using differential pressure level transmitters, and they work quite well sometimes. Can technical improvements be made to handle this?