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Level Transmitters

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Transmitters are also called sensors or transducers; they both convert signals into a reading of pressure or temperature. There are two main ways level transmitters receive information: by making point level or continuous level readings. Read More…

Level Transmitters Level transmitters are devices that measure the level of a solid, liquid or slurry within a container and then convert the information into a comprehensible form.
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Leading Manufacturers

Boxborough, MA  |  800-257-3872

We design and manufacture acceleration, pressure and weight sensing products. Setra makes fuel cell pressure transducers, industrial strain gauge pressure transducers, HVAC/R pressure transducers, ultra-high purity and vacuum pressure transducers plus other types. We've been in business since 1967.

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Setra Systems, Inc. $$$

Attleboro, MA  |  508-236-3800

Sensata Technologies is known for many items. Among these are pressure transducers, used for industrial and HVAC/R gas and liquid sensing. These pressure transducers are available as sealed gauge, gauge or absolute. If one of our standard offerings doesn't suit your need, we will customize.

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Sensata Technologies, Inc. $$$

Hudson, MA  |  800-343-4492

Since 1971, Thermalogic has been a leading manufacturer of electronic temperature and humidity control and sensors. Here at Thermalogic we work with our clients in a partnership to build a lasting business relationship. All of our products have quick turnaround times, including custom designs, and are thoroughly tested prior to being sent out. At Thermalogic we pride ourselves on our high quality, industrial grade, reliable products. Contact us today to get started!

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Thermalogic Corporation $$$

Amherst, NH  |  800-216-3636

ControlAir is a worldwide leading manufacturer of precision pneumatic and electro pneumatic control products essential to automated industrial equipment, process control systems and instrumentation, laboratory research and analysis, energy management, fluid power, robotics, and valve automation applications. An ISO-9001:2015 registered quality system assures tightly controlled specifications and processes, resulting in dependable pneumatic controls.

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ControlAir, Inc. $$$

Northridge, CA  |  818-886-2057

For over 41 years Validyne Engineering has been designing, marketing, manufacturing and servicing a broad range of pressure transducers & transmitters having full scale ranges from 0.1 in h20 to 12,500 psi and signal conditioning & data acquisition system. Over 3,000 customized "specials" have been derived from their standard product offerings.

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Validyne Engineering Corp. $$$
placeholder image Setra Systems, Inc. Sensata Technologies, Inc. Thermalogic Corporation ControlAir, Inc. Validyne Engineering Corp.

Of the two types of information receiving styles employed by level transmitters, point level transmitters sense when a substance has reached a predetermined level, usually providing an alarm or electrical charge that shuts off the feed. Continuous level transmitters are made up of multiple sensors that provide a constant reading of the level of the substance. These transmitters are small and usually encased in stainless steel for protection because level transmitters are built to withstand a wide range of temperatures, pressures, substances and conditions in the specified space.

This space can be a vat, tank, silo or other container used for mixing, processing or other operations. The transmitters perform an important task because they take measurements where people cannot, like in an enclosed tank or a vat of chemicals with a mixing blade. Knowing how much material is in a container is valuable across many industries because over or under-filling a specified space can lead to hazardous conditions as well as loss of product and time.

Level transmitters use many different methods and technologies to measure the levels of substances. These sensors are unaffected by changes in conductivity, temperature, pressure, humidity or moisture content as well as dust and static-charge buildup. There are five main kinds: non-contacting radar, guided wave radar, ultrasonic, differential pressure and vibrating fork. Non-contacting radar transmitters typically are installed on top of a container, so the waves are sent downward into the enclosure.

The transmitter uses the returning echoes to determine how much substance is in the tank. Guided wave radar transmitters are able to provide both level and interface measurements because the advanced technology can differentiate between different layers of fluids, such as oil and water. Ultrasonic level transmitters have non-contacting sensors housed in watertight enclosures. They use ultrasonic waves to gather information. Differential pressure level transmitters take multiple readings in different places in the container and compare the readings to determine the level.

Vibrating fork transmitters are used with fine powders and granular solids. Multiple tines are lowered down toward the powder and stop when they reach the top of it. They vibrate to minimize material buildup between the probes. Other styles include optical level transmitters, air bubblers and rotation paddle level transmitters.