Product Overview
The delay line contact transducer is an ultrasonic NDT probe series for thickness measurement and near-surface flaw detection. It is used with compatible ultrasonic flaw detection or thickness measurement equipment as a front-end probe component.
This transducer series uses a delay line between the active element and the inspection surface. Confirmed applications include thickness measurement, near-surface flaw detection, inspection of thin sections, curved parts, tubing, pipe, composites, plastics, and turbine blades.
Key Features
- Delay line contact transducer structure for ultrasonic NDT inspection.
- Used for thickness measurement and near-surface flaw detection.
- Replaceable or removable delay line configurations are available depending on model family.
- Higher frequency options are available for applications requiring improved resolution and small flaw detectability.
- Side mounted Microdot connector is used on the delay line contact transducer series.
- DFR models provide removable delay line configurations.
- Mini-DFR configuration is available for selected small element applications.
- K-PEN pencil probe configurations include straight, right angle, and 45° handle options.
- K-PEN tip delay options include 0.065 in. / 1.7 mm and 0.090 in. / 2.3 mm.
Applications
This delay line contact transducer is suitable for ultrasonic thickness measurement and near-surface flaw detection. It can be used for inspection of thin sections, curved parts, tubing, pipe, composites, plastics, and turbine blades.
The K-PEN pencil probe option is used for tightly curved surfaces such as turbine blades and for wall thickness measurement from the bottom of an external pit. The small contact area and interchangeable delay lines make it suitable for inspection locations where probe access is limited.
Product Structure
- Delay line structure: A delay line separates the active element from the inspection surface for contact ultrasonic testing.
- Exchangeable delay line: G..MN configurations use exchangeable delay lines with 9.5 mm and 12.5 mm length options.
- Removable delay line: DFR configurations use removable delay lines in selected element sizes.
- Mini-DFR configuration: A compact removable delay line configuration for selected small element inspection tasks.
- K-PEN pencil probe: A replaceable delay line pencil probe with two tip diameters and three handle styles.
Specifications
| Item | Specification |
|---|---|
| Product Type | Delay line contact transducer |
| Inspection Method | Contact ultrasonic inspection |
| Application Category | NDT and thickness measurement |
| Main Applications | Thickness measurement, near-surface flaw detection, thin sections, curved parts, tubing, pipe, composites, plastics, and turbine blades |
| Model Families | G..MN, DFR, Mini-DFR, and K-PEN |
| Frequency Options | 2.25 MHz, 3.5 MHz, 5 MHz, 7.5 MHz, 10 MHz, 15 MHz, 20 MHz, and 22 MHz depending on model family |
| Element Diameter Options | 3 mm, 5 mm, 6 mm, and 13 mm depending on model family |
| Delay Line Options | 9.5 mm, 12.5 mm, 0.38 in., and 0.5 in. delay line options depending on model family |
| K-PEN Tip Delay Options | 0.065 in. / 1.7 mm and 0.090 in. / 2.3 mm |
| K-PEN Handle Options | Straight, 45°, and right angle |
| Connector / Cable Options | Microdot, BNC cable, and LEMO-1 cable options depending on model family |
| Accessories | Delay line, cable, delay line couplant, spring loaded VEE block, and BNC cable depending on model family |
| Custom Configuration | Available on request |
Model Options
| Model Family | Frequency Options | Element / Tip Size | Structure or Accessory Notes |
|---|---|---|---|
| G..MN | 5 MHz, 10 MHz, 15 MHz | 5 mm element diameter | Exchangeable delay line options |
| DFR | 2.25 MHz, 3.5 MHz, 5.0 MHz, 10.0 MHz, 15.0 MHz, 22.0 MHz | 3 mm, 6 mm, and 13 mm depending on model | Removable delay line configuration |
| Mini-DFR | 20.0 MHz | 3 mm element diameter | Compact removable delay line configuration |
| K-PEN | 7.5 MHz and 20.0 MHz | 0.065 in. / 1.7 mm and 0.090 in. / 2.3 mm tip delay options | Straight, right angle, and 45° handle options |
Integration Notes
This delay line contact transducer should be selected according to measurement task, material type, section thickness, surface geometry, access space, frequency, element size, and delay line configuration. It requires compatible ultrasonic inspection equipment and suitable contact coupling.