The TI-007X Series precision thickness gauges are engineered for high-resolution wall thickness measurements on thin materials, using single-element transducers with or without a delay line.

Conventional ultrasonic transducers exhibit a natural dead zone directly beneath the crystal, limiting their ability to accurately detect thin walls. This dead zone results from the overlap of the outgoing and returning ultrasonic pulses.

To solve this, TI-007X Series probes incorporate a delay line—a solid medium inserted between the transducer and the test surface. This design enables precise measurement of walls as thin as 0.15 mm, while significantly reducing surface noise and improving signal clarity.

Delay lines are typically made from materials such as acrylic, epoxy or graphite. Graphite is especially suitable for measuring low-velocity materials like plastics due to its excellent acoustic damping characteristics.

The extended acoustic path created by the delay line increases the time separation between transmitted and received echoes, enhancing measurement resolution—especially important in thin-wall applications.

In addition, delay line transducers offer superior resistance to heat, making them ideal for high-temperature applications where standard probes might degrade or lose accuracy.