Briefing of Float (liquid level)

Level floats, also known as floats, are spherical, cylindrical, oval, or similarly shaped objects made of rigid or flexible materials that float in water and other liquids.They are non-electrical hardware that are often used as visual indicators of surface demarcations and level measurements.They can also be incorporated into switch mechanisms or translucent fluid tubes as components to monitor or control liquid levels.Level floats, or float switches, use the principle of buoyancy (difference in density) of substances to follow the liquid level. Solid floaters are usually made of plastic that is less dense than water or other applied liquids so they float.Hollow floats filled with air have a much lower density than water or other liquids,making them suitable for some applications.Stainless steel magnetic floats are tubular magnetic floats used for reed switch activation; they have a hollow tube connection running through them.These magnetic floats have become standard equipment where strength, corrosion resistance and buoyancy are required.They are made by welding together two drawn half shells.The welding process is critical to the strength and durability of the float. Welds are full penetration welds that are smooth and virtually indistinguishable from the rest of the float surface.

Level floats are also available in thermoplastic corrosion resistant materials.These materials include PVC,polypropylene and PVDF.An example of an application that would require such a material would be if a manufacturer of metal plating and metal finishing lines needed to continuously measure the level of their chromic acid tanks.Stainless steel corrodes rapidly in chromic acid,which is why one may choose to use PVDF floats,a material that is highly chemically resistant to chromic acid.Thermoplastic level floats are an excellent alternative to some other forms of level sensors,such as ultrasonic or radar,when dealing with aggressive chemical applications.This is because certain chemicals can create vapor layers or corrosive fumes inside the tank.The level float is unaffected by any foam,steam, turbulence or condensation in the tank that would normally cause problems with ultrasonic or radar level sensors.

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