What are the different types of level gauges or level switches that can be installed at the bottom of storage tanks? Which one is good?
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What are the different types of level gauges or level switches that can be installed at the bottom of storage tanks? Which one is good?
A pressure difference is installed on the side, and a radar is installed on the top.
The bottom level gauge can only operate with back pressure; the type of switch doesn’t matter – touch or vibration is acceptable
Traditional magnetic flap level gauges are also widely used; they can be read whether there is power or not
Depending on the properties of the specific medium, a magnetic flap level gauge is usually sufficient; radar level gauges are too expensive and prone to failure. The storage tanks in the two chemical plants where I have worked both used magnetic flap level gauges.
Single-flange transmitters, radar, magnetostrictive level gauges, or double-flange types can all be used; it depends on the properties of the medium and the operating conditions
Continuous measurement of the tank level can be achieved using a radar level gauge, while interlocks for high and low levels can be implemented with level switches.
It depends on what kind of container it is, what liquid it stores, whether there is pressure involved, and whether the instrument needs to be used for control – for precise control or merely for controlling the on/off of inlet/outlet valves and the start/stop of pumps Level gauges are divided into static pressure level gauges and differential pressure level gauges. When there is pressure in the tank, differential pressure is used; when there is no pressure, static pressure is used. The level gauge can measure the liquid level in the tank with relatively high accuracy, and the displayed level ranges from an empty tank to a full tank ； The level switch can only indicate either none or present.