Contact ultrasonic ultrasonic transducer BBTM-PT

direct-contacthigh-frequencywith delay line

Product Overview
The BBTM-PT ultrasonic thickness probe is engineered for contact pulse-echo measurement of thin sheets, thin-wall tubing, small and curved components, and areas with limited contact access. Its near-surface resolution enables reliable thickness readings on metals, plastics, composites, pipes and turbine blades, and for localized remaining-wall measurement at the bottom of external corrosion pits. Multiple frequency, element diameter, delay-line length and small contact-tip options are offered to match the acoustic properties, thickness range, curvature and available contact area of the tested part.

Key Features

• Precision thickness measurement for thin materials, thin-wall structures and small components
• Good near-surface resolution for short sound paths
• Replaceable delay lines to adapt contact area to component profiles
• High-frequency options for improved resolution on thin materials and small measurement zones
• Small contact-tip options for confined spaces, curved surfaces and localized corrosion pits
• Straight, right-angle and 45° handle configurations (including pencil-style)

Typical Applications

• Thickness measurement of thin sheets and thin-wall tubes
• Pipe and curved-component thickness checks
• Plastic and composite thickness measurement
• Turbine blades and small complex components
• Local remaining-wall measurement at the bottom of external corrosion pits
• Near-surface inspections and short-path measurements

Technical Specifications
Model: BBTM-PT
Measurement method: Contact ultrasonic pulse-echo measurement
Frequencies available: 2.25, 3.5, 5, 7.5, 10, 15, 20, 22 MHz
Element diameters: 3, 5, 6, 13 mm
Small contact-tip diameters: 1.7, 2.3 mm
Delay line lengths: 9.5, 12.5 mm (replaceable)
Connection: Microdot or BNC cable (depending on configuration)
Handle styles: Straight, right-angle, 45° (standard and pencil variants)

Available Configurations
Operating frequency: Selected according to material, target thickness and resolution requirements
Element size: 3, 5, 6 or 13 mm
Contact area: Standard delay line or small contact tip
Delay line: Replaceable 9.5 or 12.5 mm option
Handling style: Standard, pencil, right-angle or 45°
Connection: Microdot or BNC cable

Selection Guide
Higher frequencies provide better resolution for thin materials and small measurement areas. Smaller element diameters and small contact tips are suited to curved surfaces, confined spaces and localized measurement points. Select frequency, element size and contact tip based on material acoustic properties, target thickness, surface curvature, available contact area and instrument interface.

Characteristics / Technical Summary

• Model series: BBTM-PT
• Measurement principle: Contact ultrasonic pulse-echo
• Frequency range: 2.25–22 MHz (discrete options listed above)
• Element diameters: 3, 5, 6, 13 mm
• Small contact tips: 1.7, 2.3 mm
• Delay lines: 9.5, 12.5 mm (replaceable)
• Connections: Microdot or BNC depending on configuration
• Typical applications: Thin-sheet, thin-wall tube, curved-component, composite/plastic and turbine-blade thickness measurement; localized corrosion pit assessment; near-surface inspection