Level Indicator

A reliable source for Level Switch information and leading Level Switch Companies & Manufacturers.

Unlike level switches, they are not capable of controlling the amount of material; they are solely capable of providing information regarding the material level. The inability to control the material level is due to the lack of a switching mechanism, which allows level switches control of the material flow. Read More…

Level Indicator Level indicators are measurement devices that determine the amount of material that is in a container.

Leading Manufacturers

Monterey, CA  |  800-866-0200

Sierra`s Innova-Switch&trade electronic instruments and devices represent the state-of-the-art in gaseous and liquid flow switching or liquid level control. All of our products, like the standard level switches, meet a broad range of performance and environmental application requirements. Our switches are easy to install and work reliably long term, which means you can depend on them.

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Sierra Instruments $$$

McDonough, GA  |  800-780-3776

We provide a full line of glass solutions including redline heavy wall glass, high pressure gage glass, clear heavy wall gage glass, and more. Our teams go out of our way to find the best products for your needs. Please give one of our representatives a call today to learn more information!

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BoilerSupplies.com $$$

Eagan, MN  |  800-852-9984

FPI Sensors manufactures standard and custom liquid level sensors. Our capabilities include single and multi-level float sensors, side mount, leak detection, continuous measurement, field adjustable products and custom applications. We have technology in capacitance, optical sensing and float type switches. We have the ability to modify standard products and to build complete custom designs.

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FPI Sensors International $$$

Oxnard, CA  |  800-562-2447

Since 1956, Harwil Corporation has been providing quality design and manufacturing of electro mechanical fluid flow and liquid level switches as well as pump emergency shutdown controllers. All of Harwil’s level switches are designed with a focus on producing simple, reliable, low cost units with broad operating flexibility in a multitude of physical, thermal and chemical operating environments.

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Harwil Corporation $$$

Detroit Lakes, MN  |  218-847-1317

The pioneering efforts 30 years ago made the first Tank Alert® alarm and Sensor Float® control switch. Today, SJE-Rhombus has become a leading manufacturer of reliable, trouble-free liquid level controls for the water, wastewater and sewage industries. Our complete product line includes Build-A-Panel™ control panels, engineered custom systems, Tank Alert® alarm systems, pump and control switches.

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SJE Rhombus $$$
placeholder image Sierra Instruments BoilerSupplies.com FPI Sensors International Harwil Corporation SJE Rhombus

A level indicator is more in line with a gauge then with a switch, and they can be referred to as level gauges or level sensors as well. However, despite their inability to control material flow, level indicators are still widely used in many applications and industries, including industrial manufacturing, in which level indicators help to prevent overflows, jams and clogs in containment and conveyance systems; water treatment, where they are popular tools used to measure water levels in water treatment facilities; food and beverage, in which they are used in storage and packaging applications; and petroleum, in which they are used in the measurement of oil and gas for storage and packaging for distribution purposes. Level indicators can be used in the measurement of material levels such as limestone, foundry sand, grain, water, chemicals, sewage and sludge.

Without the addition of a switching mechanism, level indicators are fairly simple constructions and look very similar to a temperature gauge. A level indicator is basically a form of sight glass, which is a transparent tube that the operator of the container utilizes to observe the level of liquid that is contained within.

As a result, level indicators are often manufactured from glass, but can also be fabricated from aluminum and various types of plastic. Level indicators are attached to the container that the material is held within, and can be attached through two main methods: by using bar magnets or by using suction cups. Although they can be very basic constructions, level indicators can also be manufactured with additional features to become very complex and more customized to the needs of specific applications.

An example would be when a level indicator is desired to measure the material level of bulk dry materials, in which case the level indicator must become more durable as well as offer additional features required for solid measurement as compared to liquid measurement. In addition, level indicators can provide either single-point level measurement or continuous level measurement, meaning that they can measure one area of the material or any changes to the material level as a whole.