Ultrasonic Level Transmitters

$ 845.00


Ultrasonic Level TransmitterIn non-contact Ultrasonic Level Transmitters measurement, the sensor emits ultrasonic pulses in the direction of the medium, which then reflects them.  Also, the elapsed time from emission to reception of the signals is proportional to the level in the tank.   Ultrasonic sensors are ideal for simple standard applications, both for liquids and for solids.

Installation becomes easy thanks to the graphic echo display and advanced diagnostics. The false echo filtering algorithm combined with the best‑in‑class beam angle ensures easy installation in narrow areas with many obstructions. With through-the-glass technology, you never have to open the cover to configure the instrument. It is hard to believe that all this functionality is available on a device powered by only two‑wire loop power.

Ultrasonic level transmitters are high-tech devices that are used for accurately measuring the level of liquids or solids within a container or vessel.  They utilize ultrasonic waves, which are sound waves of a frequency beyond the range of human hearing, to determine the distance between the transmitter and the target substance.  This information is then converted into a measurement of level, allowing for precise monitoring and control in various industrial applications.


Ultrasonic transmitters consist of several key components, including a transducer, electronic circuitry, and a display or output device.  The transducer, which is the heart of the system, emits ultrasonic waves that travel towards the surface of the substance being measured.  When these waves strike the target, they bounce back and are detected by the transducer.  The time taken for the waves to travel to the target and return to the transducer is used to calculate the distance or level.

One of the main advantages of their non-contact nature.  Unlike traditional methods such as float switches or capacitance probes, ultrasonic level transmitters do not physically come into contact with the substance being measured.  This eliminates the risk of contamination or damage to the transmitter and allows for measurements to be taken in hazardous or corrosive environments.


Furthermore, ultrasonic transmitters offer high accuracy and reliability.  They can provide precise measurements even in challenging conditions, such as turbulent or agitated substances, varying temperatures, or foaming liquids.  Additionally, most level transmitters can be calibrated for specific substances, ensuring accurate readings tailored to the application.

In terms of installation, ultrasonic-level transmitters offer flexibility and ease.  They can be mounted in different configurations, including top-mounted, side-mounted, or externally mounted.  This versatility allows for optimal positioning based on the specific requirements of the application or the characteristics of the container or vessel.


Ultrasonic level transmitters also provide various output options for communicating the measured data.  They can have digital displays that show the level in real-time, analog outputs such as 4-20mA or 0-10V, and even digital communication protocols like Modbus or HART for integration with control systems.  This versatility makes them compatible with a wide range of monitoring and control systems.

Furthermore, ultrasonic-level transmitters often come with additional features to enhance their functionality and usability.  For example, some models have built-in temperature compensation to account for temperature changes that can affect the speed of sound. Others may have automatic echo verification or signal analysis capabilities to ensure reliable measurements in challenging applications.


When it comes to maintenance, ultrasonic sensors generally require minimal attention. They are known for their long-term stability and durability, with many models offering high levels of protection against environmental factors such as dust, moisture, or corrosive substances.  However, regular cleaning and periodic calibration are recommended to maintain optimal performance.

In conclusion, ultrasonic level transmitters are sophisticated devices that utilize ultrasonic waves to accurately measure the level of liquids or solids in containers or vessels.  Their non-contact nature, high accuracy, versatility, and ease of installation make them suitable for a wide range of industrial applications.  Whether it is monitoring inventory levels in storage tanks, controlling the filling process in chemical plants, or managing wastewater levels in treatment facilities, ultrasonic-level transmitters play a crucial role in ensuring efficient and safe operations.


In recent years, advancements in technology have led to the development of more advanced and intelligent ultrasonic-level transmitters.  These newer models incorporate features and capabilities that further enhance their functionality and performance.

One notable advancement is the integration of signal-processing algorithms in ultrasonic sensors.  These algorithms help to improve the accuracy and reliability of measurements by compensating for factors such as temperature variations, foam or turbulence in the substance being measured, and even changes in atmospheric pressure. By analyzing the received signals and applying advanced algorithms, these transmitters can provide highly precise and stable level measurements.

Another feature that has become increasingly common in ultrasonic-level transmitters is the ability to measure multiple levels simultaneously.  This is particularly useful in applications where complex or irregularly shaped containers are involved.  By emitting multiple ultrasonic beams at different angles, these transmitters can determine the level at various points within the container, providing a more comprehensive and accurate representation of the substance’s volume or level.

Furthermore, some ultrasonic sensors are equipped with advanced diagnostic capabilities.  These diagnostics monitor the health and performance of the transmitter, alerting operators to any potential issues or malfunctions. This proactive approach helps to minimize downtime and maintenance costs by allowing for timely repairs or replacements.

Integration of Ultrasonic Level Transmitters

Integration with other monitoring and control systems is also a key aspect of modern ultrasonic-level transmitters.  They can be seamlessly integrated with SCADA (Supervisory Control and Data Acquisition) systems, PLCs (Programmable Logic Controllers), or other industrial control systems.  This enables real-time data acquisition, remote monitoring, and control of the level measurement process.  It also allows for seamless integration with wider plant or facility management systems, enabling more efficient and centralized monitoring and control.

Another area of development in ultrasonic-level transmitters is wireless connectivity.  By incorporating wireless communication protocols such as Wi-Fi or Bluetooth, data from the transmitter can be easily accessed and monitored from remote locations or mobile devices. This enhances the mobility and accessibility of level measurement data, enabling real-time monitoring and quick decision-making.

Future Improvements for Ultrasonic Level Transmitters

In terms of prospects, research and development efforts are focused on improving the accuracy, reliability, and range of ultrasonic-level transmitters.  Additionally, there is a growing interest in exploring the integration of ultrasonic technology with other sensing technologies, such as radar or laser-based systems, to enhance measurement capabilities in specialized applications or challenging environments.

Ultrasonic-level transmitters offer several advantages that make them popular in industrial applications.  Here are some key advantages:

Non-contact measurement

Ultrasonic level transmitters do not physically touch the substance being measured, eliminating the risk of contamination or damage to the device.  This makes them suitable for measuring corrosive or hazardous substances.

High accuracy

Ultrasonic level transmitters can provide precise measurements, even in challenging conditions such as turbulent liquids, varying temperatures, or foaming substances.  They offer reliable and consistent readings, facilitating accurate control and monitoring.


These transmitters can be installed in various configurations and are compatible with different container shapes and sizes.  This flexibility allows for optimal positioning and ease of installation.

Wide range

Ultrasonic level transmitters can measure levels in a wide range of distances, from just a few centimeters to several meters.  This makes them suitable for both small-scale and large-scale applications.

Multiple output options

Ultrasonic level transmitters often offer various output options, such as digital displays, analog signals (4-20mA or 0-10V), or digital communication protocols (Modbus or HART).  These allow for seamless integration with different control and monitoring systems.

However, there are also some disadvantages associated with ultrasonic-level transmitters:

Limited applicability for certain substances

Ultrasonic-level transmitters may not be suitable for substances with extreme temperatures, high viscosity, or low reflective properties.  The composition and characteristics of the substance being measured can affect the accuracy and reliability of the measurements.

Environmental factors

While most ultrasonics are designed to withstand environmental challenges, extreme conditions like dust, condensation, or extreme temperatures can impact their performance.  Regular cleaning and maintenance may be required to ensure optimal operation.


Ultrasonic measurement can be more expensive compared to other level measurement technologies.  The complexity and advanced features of these devices contribute to their higher price point.  However, it is important to consider the potential cost savings and benefits they offer in terms of accuracy, reliability, and efficiency.

Limited range in certain applications

In very large containers or open spaces, ultrasonic waves may disperse or reflect off surfaces, leading to reduced effectiveness of the measurement.  In such cases, alternative technologies like radar-level sensors may be more suitable.

Calibrations and interferences

Ultrasonic level requires periodic calibration to account for changes in environmental conditions and substance properties.  Additionally, factors like acoustic interferences from nearby structures or objects can impact the accuracy of measurements and may require adjustments or repositioning of the transmitter.

Additional information

Weight 3 lbs
Dimensions 12 × 12 × 12 in

2", 3"

Connection end

Flanged, Threaded, Triclamp


Explosion Proof, Intrinsically Safe


120 / 208 VAC, 24 VDC

Remote Diaphragm

None, 2", 3"



Differential Pressure Transmitter Specifications

Ranges0.25 mbar - 7.5 mbar
1.2 mbar - 62.3 mbar
6.2 mbar - .62 bar
24.9 mbar - 2.49 bar
.20 bar - 20.6 bar
Diaphragm Material316L SST, Alloy C-276, Alloy 400
Temperature LimitsAmbient: -40 to 185 F
Storage: -50 to 230 F
Communication OptionsModbus RTU, HART
Output Options4-20MA, 0-10vdc


Level Measurement application guide R1


Q:  What is an ultrasonic level transmitter?

A:  An ultrasonic level transmitter is a device used to measure the level of liquids or solids in tanks, vessels, or pipelines using ultrasonic sound waves.

Q:  How does an ultrasonic-level transmitter work?

A:  Ultrasonic level transmitters emit high-frequency sound waves that travel through the air and are reflected when they encounter the surface of the material being measured.  By measuring the time taken for the sound wave to return, the transmitter calculates the distance to the material, thus determining the level.

Q:  What are the advantages of using ultrasonic-level transmitters?

A:  Some advantages include non-contact measurement, making them suitable for various applications, high accuracy, versatility in measuring different materials, ease of installation, and resistance to harsh environmental conditions.

Q:  What are the typical applications of ultrasonic-level transmitters?

A:  Ultrasonic level transmitters are commonly used in industries such as water treatment plants, chemical processing, oil and gas, food and beverage production, wastewater management, and pharmaceutical manufacturing to monitor and control liquid levels.

Q:  How do ultrasonic level transmitters differ from other level sensing technologies?

A:  Ultrasonic level transmitters offer non-contact measurement capabilities, making them suitable for applications where contact-based sensors are not ideal due to factors such as material corrosiveness, varying material densities, or environmental considerations.

Q:  What factors should be considered when selecting an ultrasonic-level transmitter?

A:  Factors to consider include the material being measured (liquid or solid), the required measurement range, the environmental conditions (temperature, pressure, humidity), mounting options, output signals compatibility, and any specific application requirements.

Advantages / Disadvantages

Advantages of Ultrasonic Level Transmitters

Non-contact measurement:  Ultrasonic level transmitters don’t require direct contact with the material being measured, making them ideal for applications where contact could be challenging or undesirable.

High accuracy:  Ultrasonic technology provides precise measurements, ensuring reliable level monitoring and control.

Versatility:  Ultrasonic-level transmitters can be used for a wide range of materials, including liquids and solids, making them adaptable to various industries and applications.

Easy installation:  These transmitters are typically easy to install and require minimal maintenance, reducing downtime and operational disruptions.

Suitable for harsh environments:  Ultrasonic-level transmitters are often designed to withstand harsh conditions, such as extreme temperatures, providing durability and reliability in challenging settings.

Disadvantages of Ultrasonic Level Transmitters

Limited to clean environments:  Ultrasonic transmitters may be affected by dust, vapors, or other obstacles that can interfere with signal accuracy, requiring proper calibration and maintenance.

Signal interference:  External factors like temperature variations, air turbulence, or acoustic noise can impact the accuracy of ultrasonic measurements, necessitating careful consideration of the installation location.

Material compatibility:  Certain materials may absorb or reflect ultrasonic waves differently, affecting measurement accuracy, particularly in environments with foaming liquids or uneven surfaces.

Cost:  Ultrasonic level transmitters can be more expensive compared to some other level sensing technologies, which could be a consideration for budget-constrained applications.

Background noise:  Ultrasonic transmitters may be susceptible to interference from background noise or vibrations, requiring proper installation and settings to mitigate potential issues.


Ultrasonic level transmitters find applications across various industries where accurate and reliable level measurements are critical. Some common applications include:

Chemical and Petrochemical Industry

Ultrasonic level transmitters are used for monitoring and controlling the level of liquids and chemicals in storage tanks, process vessels, and reactors.  They ensure precise inventory management, prevent overfilling or underfilling, and help optimize production processes.

Water and Wastewater Treatment

These transmitters play a crucial role in measuring the levels of water, chemicals, and sludge in treatment plants.  They help manage tank levels, automate pumping systems, and monitor the efficiency of various treatment processes.

Oil and Gas Industry

Ultrasonic level transmitters are employed in oil refineries, offshore platforms, and storage tanks to measure the levels of crude oil, refined products, and chemicals.  Not only-but also, accurate level monitoring is necessary for efficient inventory management and safe operations.

Food and Beverage Industry

Ultrasonics are used for measuring and controlling the levels of ingredients, liquids, and beverages in storage vessels, fermentation tanks, and processing equipment.  They ensure accurate batching, blending, and inventory management in food and beverage production.

Pharmaceutical and Biotechnology Industry

These transmitters are utilized in pharmaceutical manufacturing and bioreactors for measuring the levels of liquids, gases, and cell cultures.  They help maintain precise process control, optimize yields, and ensure batch consistency.

Power Generation

Ultrasonic level transmitters are employed in power plants to measure the levels of water, coolant, and various chemicals in boilers, cooling towers, and fuel storage tanks.  Accurate level monitoring is crucial for safe and efficient power generation.

Mining and Minerals Processing

These transmitters are used in mining operations to monitor the levels of liquids, slurries, and ores in storage tanks, flotation cells, and thickeners.  Next, they help optimize ore processing, prevent overflows, and ensure efficient mineral recovery.

Environmental Monitoring

Ultrasonic measurements are utilized in environmental applications such as monitoring water levels in rivers, lakes, and dams. They provide data for flood control, irrigation management, and environmental impact assessments.

Manufacturing and Process Industries

Ultrasonic level measurements are employed in various manufacturing processes, such as automotive, plastics, and textiles. Also, They help monitor the levels of raw materials, chemicals, and finished products in storage tanks and process vessels.


These transmitters find applications in agricultural sectors for measuring water levels in irrigation systems, tanks, and reservoirs.  They assist in efficient water management, enabling precise irrigation control and water conservation.

These are just a few examples of the wide range of applications for ultrasonic-level transmitters.  Their versatility and ability to provide accurate and reliable level measurements make them indispensable tools in numerous industries where precise level monitoring and control are essential.


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