Wire Level Gauge

The Wire Level Gauge makes it easy to detect the amount of wire left in wire drums or boxes. The gauge features magnetic wire detection that slides down the drum as wire is depleted, offering a convenient way to monitor wire usage. Compatible with solid steel wires in fiber drum or cardboard packaging, not compatible with cored or non-ferrous wires.


  • Detects level gauge of wire remaining in the drum with colors & percentages.
  • Compatible with 500–1,000 LB (227–453 KG) drums/boxes (reversible design).
  • Compatible with solid steel wires in fiber drum or cardboard .packaging, not compatible with cored or non-ferrous wires.
  • Functions with or without fire resistant drum covers.

What Is a Reverse Float Level Gauge?

A level gauge monitors the liquid level of the chemical you’re storing in your polyethylene tank. There are several types of gauges, including clear tube level gauges and ultrasonic level gauges. While we can provide a variety of level indicators, we almost always recommend our reverse float gauge.

What Is a Reverse Float Level Gauge?

A reverse float level gauge makes it easy to know how much chemical is in your tank, from outside the tank wall.

The reverse float gauge can be counterintuitive at first, but it’s an elegant and simple solution that gives you a clear reading from outside of the tank. The level system contains a float inside the tank, which is connected by a rope to a weighted level indicator. The indicator is housed in a vertical tube along the exterior sidewall of the tank.

As the tank is filled, the chemical lifts the float, and the pulley system moves the weighted indicator downward. As the tank empties, the float inside the tank lowers, pulling the indicator on the outside upwards.

In essence, you’re looking at an upside-down representation of the chemical’s level in the tank. When the tank is full, the visual indicator is at the bottom of the tube, and when the tank is empty it’s at the top. It is a reverse indication of the level in the chemical tank—thus, a reverse float level gauge!

A level gauge of any kind monitors the liquid level of what is being stored in the polyethylene tank. There are several types of gauges including clear tube level gauges, ultrasonic level gauges, etc.

This article comes from polyprocessing edit released

Mechanical Level Gauges for Water Tanks

This floating pole type water level gauge with a larger red ball indicator protruding above the tank roof is the choice for many tank owners. It is ideal for trough tanks and many rural property applications. Being above the tank it can easily be seen from a distance, in any direction and above visual obstructions like crops, fences, animals, etc.


High above the tank the level gauge can be seen from far away, in every direction 3 dimensionally.


On top out of harm’s way, stock can’t reach the level gauge and birds cannot perch on the indicator ball.

This article comes from rainwatere edit released

Using Oil Sight Glasses and Level Gauges

When I go to a plant to examine its current lubrication practices, among the first things I look for are oil sight glasses and level gauge. These devices provide a wealth of information in the time it takes to walk up to a component and check it.

More than just simple additions to a machine to indicate there is enough oil in the sump for proper lubrication, sight glasses offer an opportunity to monitor the oil.

Generally, oil sight glasses and level gauge come in two styles. Columnar sight glasses and level gauge attach to an oil-bathed component, typically at the drain port. They have cylinders made of a transparent material (glass, acrylic, some plastics, etc.) in which oil is free to fluctuate up and down with the change of the oil level within the machine.

The second style is known as the “bull’s-eye” sight glass. It also is made of a transparent material but is threaded into a port where the oil level should be maintained during operation.

This article comes from machinery edit released

Advantages of the Magnetic Level Gauge

The magnetic level gauge is now widely used throughout process industries as an effective level control device.

A magnetic level gauge is often used in applications where a sight glass (or glass sight gauge) is either ill-suited based on process variables or is underperforming based on plant requirements. These can include enhanced safety for personnel; environmentally risky situations including media leakage or fugitive emissions; need for maintenance reduction; or need for high visibility from a distance.


The obvious safety benefit of the level gauge over a sight glass is reduced chance of breakage. If the process fluid is under extreme pressure or temperature, the likelihood of sight glass breakage is increased. The pressure boundary of an level gauge is made of robust metal, frequently the same as the vessel piping, making level gauge as safe as the surrounding piping system itself. The indicators, transmitters, and switches are all mounted externally and, therefore, are unaffected by toxicity, corrosiveness, or other process fluid characteristics.

Another safety benefit is that the chemical compatibility with the fluid in an level gauge is restricted to only three components, the metallic chamber, gaskets and float. With glass sight gauges, the process fluid may have chemical compatibility issues with any of the wetted materials—glass, metal, or sealants.


Level gauges are virtually maintenance free once installed because the indicator never touches the process fluid. With sight glasses, the gauges must be periodically checked for leaks and cleaned on a regular basis. Scaling, etching and build-up on the glass from the process fluid can cause the sight glass to become unreadable.


Visibility of the fluid level from long distances is another major reason for selecting an level gauge over a sight glass gauge. Sight gauge level indicators are intended to be viewed at maximum distances of around 10 feet (3 meters). However, the bright contrasting colors of the flags or a fluorescent shuttle on an level gauge permit visible level indication at distances up to 100 feet (30 meters) or greater.

This article comes from magnetrol edit released

Magnetic Float Level Gauge Indicators

Magnetic float level gauges, also known simply as magnetic level gauges or magnetic level indicators, provide a continuous visual indication of liquid level in a vessel or tank. Being a robust, relatively cheap level measurement technique suitable for high pressure systems they are found throughout the process, oil & gas, refinery, chemical, petrochemical, and power generation industries.

How does a Magnetic Level Gauge Work?

A magnetic level gauge contains a float, typically made from stainless steel, titanium or plastic which contains an integral, permanent omni-directional magnet. The float is contained in a bypass chamber connected to the vessel. This buoyant float rises and falls with the liquid or interface level whilst the magnet “flips” the magnetic wafers mounted externally to the chamber. As the float rises and falls each wafer rotates 180° and so presents a contrasting colour.

General industry practice is that the wafers above the float show white, whilst those below show red. Hence the indicator then presents a clearly defined and accurate level measurement of the liquid in the chamber.

Float Magnet Construction

The magnetic field is the heart of the magnetic level gauge – the stronger the field, the more reliable the instrument will function. Some manufacturers use a single annular ring magnet, others use a series of single bar magnets in a circular array in their float design. These designs tend to provide better performance than a single bar magnet.

Mounting of Magnetic Level Gauges

Like Reflex Gauges, magnetic level gauges are connected laterally to a vessel via at least 2 process connections. The process connections can be flanged, threaded or welded. The level in the bypass chamber corresponds to the level in the vessel. It is worth noting that the bypass chamber can be manufactured to any length and mounted to suit the best viewing angle therefore bespoke level gauges can be made to suit awkward installations. It is common practice to provide shut off valves between vessel and level gauge to allow removal of the level gauge without emptying the vessel. Depending on the properties of the fluid being measured, and process conditions a vent valve and/or a drain valve may also be specified in the hookup. The highly contrasting colours used on the level gauge flappers means there is normally no need to provide an additional light as is often the case with reflex level gauges.

Float Damage Warning

Many magnetic level gauge manufacturers offer the option of incorporating a damaged float warning system. This is achieved by extending the bypass chamber below the bottom process connection enough to allow the float to pass the process connection. The indicator wafers below the process connection are mounted either with their colours in reverse, or coloured yellow and white. Should the float drop into that zone the wafers will turn presenting a sharp, immediately readable indication of float failure.

Interface Applications

The magnetic level gauge is ideally suited for measuring a liquid interface. Floats are available to meet a variety of specific gravities to suit the liquids being monitored – many manufacturers offer floats suitable for specific gravity ranges of 0.33-2.2. See our page on Liquid Level Interface Measurement for mor information on measuring liquid interface.

This article comes from control edit released

Applications of Reflex Level Gauges

Reflex level gauges may be applied in numerous applications to include feed water heaters, DE aerators, boiler drums, and other types of tanks.

For a reflex level gauge, within the recess of a liquid chamber and behind a single piece of glass, is the liquid column that clamps down onto the gauge body. This glass is flat on the outside and on the inside has a series of prism grooves that face the vapour and liquid space. Based on whether light enters the vapour or liquid space, it is reflected or absorbed, respectively.

Once light encounters a groove’s surface within the vapour space it reflects to the surface of the grooves on the opposite side, followed by reflecting completely back to the observation direction. During the liquid phase, light is absorbed, which creates one display for the area that is covered by liquid and another display for the area located above the liquid.

Using the prism glass, a reflex level gauge accurately measures liquid inside the vessel. When light hits the glass where there is no liquid, the prism reflects the light directly out of the gauge. Known as the “dry” area, a silver colour is displayed while the “wet” part is displayed in black. The contrasting colours create a clear delineation line that makes it easy to view the measurement.

The external chamber is a self-contained cage designed for use with our top mounting level transmitters or switches. Quality construction and a wide selection of configurations make this cage an ideal means of utilizing the power of our many technologies without mounting directly into the process vessel.

Level gauges provide a number of benefits that are industry-specific. A manufacturer like Shridhan that has specialized expertise in Manufacturing level gauges you have full assurance of enjoying optimal performance and reliability.

We understand each and every application and their advantageous to our end-users, making our products precise.

This article comes from shridhan edit released