There are many applications where ultrasound can be used for condition monitoring and energy conservation. If someone is looking at using ultrasound for multiple applications, then an instrument with frequency tuning, or adjustable frequency should be considered. Remember, the frequency is where the instrument is set to be able to listen to the sound. Frequency tuning allows the user to select the specific frequency of the interested sound, while reducing interference from competing ultrasonic signals.
With frequency tuning, because we can tune the instrument to the recommended frequency for a particular application, this allows for better sound quality that is heard by the inspector and then recorded and stored by the instrument. An instrument with frequency tuning also allows for an ultrasound instrument to be used for multiple applications. Instruments that are set to a fixed frequency are usually set for an optimal frequency for both airborne and contact applications; therefore, considered to be “trouble shooting” instruments. Instruments with frequency tuning are also more suitable for data collection and trending.
Benefits of frequency tuning:
• Better sound quality
• Reduces interference from competing ultrasounds
• More repeatable readings
• Utilization for more applications
• Ability to select frequencies suitable for the application