JOYO M&C – Servo Tank Gauge Manufacturer & Suppliers

Several forms of level gauges exist in the industry. Depending upon the types of liquids such as water, oil, diesel etc. measured by level gauges, they can be classified into following categories:

Tank level gauges: These level sensing devices generally determine volume of liquid enclosed in the tank.

Fuel level gauges: These devices mainly provide fuel level readings in case of automobiles and other equipments consuming fuel.

Water level gauges: These level gauges are basically applied to determine the rise or fall occurring in water level.

Mechanical level gauges: This category of level gauges is mainly employed in underground storage tank applications for measuring the level of liquid.

This article comes from chipkin edit released

Level gauges or level indicators are instrument devices that are installed in plants for determining the liquid level in process equipment like drums, vessels, tanks, etc.

The level gauge instrument has several parts like head, float, measuring tape, bottom anchored bracket, guide wires, elbows, anchors, coupling, pipe support brackets, and pipework. To suit the requirement of the industry, various types of level gauges are available.

The magnetic level indicator (MLI) or magnetic Level Gauges are used to measure levels of fluid using a floatable device that can float in both high and low density fluids. The magnetic Level Gauges were initially designed as an alternative to glass sight gauges but they are now being widely used in process industries, new constructions and plant expansions. The magnetic Level Gauges are often used in applications where the glass sight gauges are unsafe, environmentally risky or difficult to see.

Principles of operation of the magnetic Level Gauges

The magnetic Level Gauges use the principle of magnetic field coupling to provide information on fluid level, to activate a switch and to provide continuous level data. During measurement, the coupling allows the magnetic level gauge to measure without any direct contact between the indicator and the fluid in the vessel. The magnetic field consists of lines of flux surrounding the magnet and the magnet field acts on other objects with sufficient force to move the object.

In the MLI, the magnets within the float and the indicator are magnetically coupled to create a magnetic field which penetrates the chamber wall to couple with the magnetic field created by the magnets in the indicator flags that displays the levels. The float which is located inside the chamber tracks the surface of the liquid. Selecting the appropriate magnetic level gauge for a specific application depends on several factors that include the kind of process fluid, its specific gravity, operating temperature and pressure including the necessary level range.

The safety benefits of magnetic Level Gauges over the glass sight gauges

• The most obvious advantage of the magnetic level gauge indicator is the reduced possibility of breakage even under extreme pressures or temperatures. The magnetic level gauge indicators are designed to accommodate severe environmental conditions up to 210 bars at 370oC.
• The pressure boundary of the MLI is made of robust metal making it strong and safe as a vessel. The indicators, transmitters and switches are all mounted externally so that it is not affected by toxicity, corrosiveness or other characteristics of the fluid process.
• Another safety benefit is chemical compatibility with the fluid which is restricted to 3 components: metallic chamber, gasket and float. The glass sight gauges have compatibility issues with wetted materials like glass, metal and sealants.
• Level gauge are virtually maintenance-free once it is installed because the indicator never touches the process fluid. Sight glasses have to be periodically cleaned and checked for leaks. Very often scales and build-up on the glass from process fluids makes the sight glass unreadable.
• In the magnetic Level Gauges, visibility is possible even from a far distance (100 feet) while the sight gauge level gauge indicators are only intended to be viewed from a distance of around 10 feet.
• Installations of the level gauge are a lot easier and simpler. In many cases the sight glass gauges are only available in 12-inch length due to weakness of glass. If the required visible indication length is increased, additional sight gauges are required which increases the possibility of leak joints.

This article comes from valariearthur edit released

The sanitary level gauge offers a 360-degree view of the process fluid for liquid level verification, and process validation. Unique end fittings with integral 90 degree elbows, reduces process dead space, increases tank visual verification area, and eliminates the leak paths associated with secondary fittings.

Wetted surfaces are Type 316L Stainless Steel with an internal finish of 20 Ra/180 grit, borosilicate glass inner sight tube and gaskets per your specifications. The gaskets chosen will determine the temperature and pressure ratings of the unit and can be as high as 150psig.

The sight tube is manufactured from heavy wall borosilicate glass tubing, then tooled to a precision sanitary end configuration, similar to .75″ stainless steel sanitary fittings. The inner wetted borosilicate glass sight tube is then protected with an impact resistant full polycarbonate shield, which is held in place with delrin shield guides. Vessel connections vary with application, however .75″ sanitary tri-clamp ends are standard and center to center lengths are per your specification.

Pressure ratings are up to 150 psig – full vacuum, temperature ratings are up to 350 F. Others specifications are available, please consult the factory. Options for the Sanitary Level level gauge include materials of constructions, SS, Alloys and plastic, connection configurations, lengths, shielding and gaskets.

This article comes from CF edit released