Ultrasonic Level Sensors

For Product Developers and Engineers 

About Ultrasonic Level Sensors

Ultrasonic sensor technology has been proven reliable for detecting products even under conditions such as rain, high humidity, dusty environments, smoke and extreme temperature.

We sell most of our ultrasonic level sensor products for use in liquid level sensing (such as water), but we also offer them for applications such as detecting objects moving through air channels, monitoring fluid levels, and even measuring distance between two points.

This sensor technology is ideal for high-accuracy, continuous level measurement of a wide variety of liquids in storage and shipping containers requiring a non-contact measurement solution.

Continuous level sensors allow users to monitor product flow rates without having to open the container or remove the sensor. This allows the user to accurately track changes in volume over time, saving money and improving efficiency.

How does it work?

An ultrasonic sensor sends out a short burst of ultrasonic energy at a specific frequency. When this energy hits something solid, it bounces back and returns to the sensor.

Chemical Compatibility

The choice to use ultrasonic sensors in an application can potentially depend on the compatibility with certain chemical environments. 

To ensure the reliability of using these sensors, it's important to understand what chemicals they are designed to work with so you can accurately measure your targets in chemical tanks.

When selecting an ultrasonic sensor for your application, it's important to know the following about the chemical environment where the sensor will be used:

Is it corrosive?

Does it contain solvents or other chemicals that might affect the operation of the sensor?

You can review our chemical compatibility chart here for more details. 

As you’re searching for the level sensor for your application.  You’ll find that you need to select a sensor that best suits your needs for your project. 

With that being said, our sensors operate well in different level sensing applications. 

How Ultrasonic Level Sensors Work

Ultrasonic sensors work by sending out a sound wave at a frequency above the range of human hearing.  

The transducer of the sensor acts as a microphone to receive and transmitter to send the ultrasonic sound. 

Our ultrasonic sensors, like many others, use a single transducer to send a pulse and to receive the echo.  The sensor determines the distance to a target by measuring time lapses between the sending and receiving of the ultrasonic pulse.

Common uses include:

  • Level 
  • Flow 
  • Monitoring Flow

Our ultrasonic level sensors are easy to install and low maintenance. They are intended for non-contact level sensing, which means there will be a lack of build up on the sensor face itself.

The level sensors are required to have an unhindered path to the surface you want to detect.  

Thousands of applications supported 

  • Our sensors are tested to last 20+ years (MTBF)
  • We warranty our sensor from a manufacturing defect

We Care About The Success of Your Application

We've helped over 20,000 engineers find sensor solutions for their applications.

Our sensors have been integrated into over 10,000 projects.


Low power, IP67 rated, weather resistant rangefinders featuring self-cleaning, noise rejection, and temperature compensation.


Low power, IP67 rated, weather resistant rangefinders featuring noise rejection, and temperature compensation.

How It Works

Request Tech Support

1. Discuss your application with our support team

Sensor Selection Help

2. Choose a Sensor

3. Easily integrate the sensor in your application


Our collaborators serve as case studies to show you how the sensors are being used in an end user application.  You can either leverage our Collaborators end product or work with us to find the right sensor for your solution.

Long-range wireless IoT sensor designer and manufacturer

Radio Bridge Inc. provides a general purpose LoRaWAN bridge using MaxBotix sensors to be used in many applications. 


  • Industries served: retail, industrial, oil and gas, deduction, utilities, security
  • Typically used in tank monitoring applications
  • Wireless connectivity with LoRaWAN protocol 
  • Wireless penetration through structures such as walls and floors

Ultrasonic Distance Sensor for Tank Level Measurement

LX Group developed an Ultrasonic Distance Sensor for Tank Level Measurement


  • Used in grain silos, water tanks, and dams
  • Monitor the level of water tanks remotely
  • The plug-and-play product works out of the box and is robustly designed to work in rough environments.

LoRaWAN IoT Distance Sensor 

Sweden based company ELSYS uses a sensor from our WR line in their IoT Distance Sensor.

Real world applications include:

  • Underground water level measurement
  • Waste level measurement in containers
  • Snow depth measurement

Detect levels & measure distance with a reliable supplier.

Ultrasonic Level Sensor For Tanks

If mounting in a tank, our sensors do offer a narrow beam pattern, reducing the chance the sensor will detect the wall of the tank.


If the tank has smooth walls on the inside, our MB7052 and MB7369 sensors contain our Most-likely and stability filtering. This will let the sensors choose the target that gives the largest acoustic return. This will generally be the liquid level inside of the tank. 

The image below shows the ideal mounting of the sensor in a tank. 

tank level sensor mounting

Tank Mounting Notes

  • Avoid the tank walls

  • Keep a Clear Beam Path

  • The ideal sensor Mounting position

Avoid the Tank Walls

In non-smooth walled tanks, the sensor may need to be offset from the wall.  If possible, we recommend 24-36 inches of clearance between the sensor and the sidewalls.

Not sure if our sensors would be the right fit for your application?

Click the button below to contact our team to discuss your project needs.


MaxBotix Inc. designs and manufactures ultrasonic sensors for use in level, proximity, and distance sensing. 

MaxBotix Inc.

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