Ultrasonic Cleaner Transducers: The Different Types Available

Wondering how ultrasonic cleaners work? The first thing you might need to know then is a transducer.  Simply told, it’s a device that converts energy or signal from one form to another. Often operated through automation, measurement and control systems, you have transducers in ultrasonic cleaners converting electrical signals to a wave form to make cleaning more effective.

The Different Choices When it Comes to Ultrasonic Transducers

The systems of ultrasonic cleaner can utilize one type of ultrasonic transducers.

There are two different ones for you to choose from:

  1. The piezoelectric transducers
  2. The magnetostrictive transducers.

We will take a look at both of them below. The differences between the two are many, from designs, to how they bond to the surface;, as well as the electrical efficiency.

However, both of them are designed to clean in the same way, by rapidly changing the radiating surface to which they are attached. The action itself though will vary by its design.  Hilsonic has some of the best ultrasonic cleaners designed to meet your particular organizational needs.

Understanding the Differences Between the Two When it Comes to Ultrasonic Cleaners

Magnetostrictive transducers, usually is made up of twisted wire made with heavy nickel or alloy core. With the electrical current beating through wires, you have the core vibrating at a similar frequency to that of the ultrasonic cleaner generator, creating the right conditions for cleaning.

Piezoelectric transducers, made from lead zirconate titanateis used because of its inherent ability to expand and contract with fluctuating electrical frequency. As it expands, the radiating surface vibrates and produces the right ultrasonic activity needed, and makes it a more efficient design than the other one.

The Differences in Bonding Method in Transducers of Ultrasonic Cleaner

In the piezoelectric transducer of the ultrasonic cleaner, they use high-temperature epoxy to help bond the transducers and the radiating surface together. They use epoxy to ensure that the stud stays in its own place, and does not rotate.

In the Magnetostrictive transducers of an ultrasonic cleaner, you have vacuum brazing, which is better than the epoxy bond, used to bond the transducer base to the radiating surface. Without the presence of the metallurgic stud, it is easy to damage the epoxy bond, something you do not want for sure.

The Other Considerations You Need to Make

Ultrasonic cleaner operating frequency is one of the most important considerations when choosing an ultrasonic cleaner system. You need to remember a few things here.

  • You go in for low frequencies if you are looking to clean le itels with heavy contamination. The magnetostrictive system though, typically operates at frequencies below 30kHz, making the system suitable for the most ultrasonic cleaner.
  • The reliability of the transducers is another important thing to note as well. Magnetostrictive transducers of an ultrasonic cleaner operate at a high temperature and the system requires extensive additional cooling.
  • The excessive heat may cause failure of certain components in the system while Piezoelectric transducers of an ultrasonic cleaner, its cleaning system is highly reliable.


No matter what ultrasonic cleaner you choose, you should ensure that it has the right transducer.