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Here the water is at the “top nut”, the maximum working level. Note the patterned backplate to help reading and toughened glass shroud. A sight glass or water gauge is a type of level sensor, a transparent tube through which the operator of a tank or boiler can observe the level of liquid contained within.
Water level indicators: They show the operator the level of fluid in the boiler, also known as a sight glass, water gauge or water column. Bottom blowdown valves: They provide a means for removing solid particulates that condense and lie on the bottom of a boiler. As the name implies, this valve is usually located directly on the bottom of the ...
Typically, fluid level is determined by the pressure at the bottom of the fluid containment (tank or reservoir); the pressure at the bottom, adjusted for the density / specific gravity of the fluid, indicates the depth of the fluid. [3] For these sensors, using chemically compatible materials is important to assure proper performance.
Liquid level floats, also known as float balls, are spherical, cylindrical, oblong or similarly shaped objects, made from either rigid or flexible material, that are buoyant in water and other liquids. They are non-electrical hardware frequently used as visual sight-indicators for surface demarcation and level measurement. They may also be ...
When the tank level is high and maximum current is flowing, the needle points to "F" indicating a full tank. When the tank is empty and the least current is flowing, the needle points to "E" indicating an empty tank; some vehicles use the indicators "1" (for full) and "0" (for empty) or "R" (for reserve) instead. [4]
Over the life of a production system, the separator is expected to process a wide range of produced fluids. With break through from water flood and expanded gas lift circulation, the produced fluid water cut and gas-oil ratio is ever changing. In many instances, the separator fluid loading may exceed the original design capacity of the vessel.
Magnetic level gauges may also be designed to accommodate severe environmental conditions up to 210 bars at 370 °C. Unlike a sight glass, magnetic level gauges do not need to be transparent and can be made out of metal, which increases the durability and operating temperature range of the device. [2]
Glass sight gauges for boiler water level were not popular until the 1890s. Part of the problem was production of the proper glass, and the sealing of the gauge. Part of the problem was production of the proper glass, and the sealing of the gauge.