NM01THM410

The Sonatest THM4-10 is a twin crystal (dual element), normal beam compression wave contact transducer designed for enhanced ultrasonic testing performance, particularly in applications requiring improved near-surface resolution. Equipped with a Lemo 00 connector for secure and reliable connection to your Sonatest or compatible instrument, this transducer operates at a nominal frequency of 4 MHz.  

The "10mm" designation refers to the approximate size of the individual crystal elements. The twin crystal configuration utilizes one crystal to transmit the ultrasonic pulse and the other to receive the returning echoes. This design minimizes the ring time often associated with single element transducers, leading to better detection of flaws located very close to the surface of the test piece.  

Key Features:

• Twin Crystal (Dual Element): Provides superior near-surface resolution compared to single element transducers.  

• Frequency: 4 MHz - Offers a good balance of resolution for detecting smaller defects and penetration for moderate material thicknesses.  

• Crystal Size: Approximately 10mm (likely the combined dimension or individual element dimension - consult datasheet for precise details).

• Normal Beam: For straightforward, direct contact ultrasonic testing where the sound beam enters the material perpendicular to the surface.  

• Connector: Lemo 00 - Provides a secure and reliable connection to compatible ultrasonic instruments.  

• Manufacturer: Sonatest - A reputable manufacturer of high-quality ultrasonic testing equipment and transducers.

• Medium Damped: Typically medium damped for a good balance of sensitivity and bandwidth.  

Benefits:

• Excellent Near-Surface Resolution: Ideal for detecting flaws located close to the inspection surface.  

• Improved Performance on Thin Materials: The twin crystal design often performs better on thinner sections.

• Reduced Ring Time: Leads to clearer signals and better detection of near-surface indications.

• Reliable Signal Coupling: Designed for direct contact testing with appropriate couplant.

• Secure Connection: The Lemo 00 connector ensures a stable and noise-free signal transmission.

• Versatile Applications: Suitable for a wide range of materials and component sizes where near-surface resolution is critical.  

Applications:

• Corrosion surveys and detection of near-surface corrosion.

• Inspection of thin-walled materials.

• Detection of laminations and near-surface defects in various materials.

• Thickness gauging of thin components.

• Applications where improved near-field performance is required.