Level Sensor

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While they are typically only used to measure materials that flow, level sensors may rarely be used for the measurement of levels for bulk solids. Since maintaining proper levels of materials is essential in many applications, level sensors are often used in industries such as pharmaceutical products production and distribution, for measurement indication of medical ingredients; HVAC, in order to monitor and control the oil or refrigerant level in heating and cooling systems; food and beverage, for monitoring of liquid and powder food items during handling, packaging and processing; industrial manufacturing, to control the levels of potentially hazardous chemicals required in various processing applications; and commercial, for monitoring of liquid levels in many restaurants, office buildings and more. Read More…

Level Sensor Level sensors, also known as level indicators, are measurement devices used to determine the level of materials such as liquids, powders, slurries and granular materials. All of these substances have flow, meaning that within containers, they naturally flow to become level due to the effect of gravity.

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

However, different applications require different types of level sensors and the various criteria that should be used to determine what type of level sensor will be best-suited for a certain application includes temperature, material phase, density, container size and chemistry.

Level sensors typically include a switching mechanism, a tube and a couple of areas of connection. However, the design of the level switch varies widely based on the desired application, and the different factors aforementioned. As a result of those wide-ranging factors, level sensor designs can vary from the simple to the exceedingly complex.

In addition, the level sensors can be triggered by many different conditions including pressure, temperature or buoyancy. Some additional features that more complex level sensors may include are thermal sensors, ultrasonic waves, vibrating sensors and optical sensors. All of these sensors can be modified to recognize specific substances or to reveal when a certain viscosity, density, opacity or thermal conductivity condition is reached.

For construction, level sensor manufacturers typically utilize stainless steel, brass and a couple different types of plastics. Stainless steel is an excellent material choice due to its hygienic properties and high corrosion-resistance, whereas brass works exceptionally well for petroleum-based liquids.

The two most common plastics that are used to fabricate level sensors are polypropylene and polysulfone. These two plastics offer advantages such as availability in different colors, good choices for acidic conditions such as in electroplating and metal cleaning as well as lower-temperature food processing applications.