Dakota NDT — T0023200 Dual-Element Transducer

7.5 MHz, 1/4 in Dual-Element Ultrasonic Transducer, High-Damped, Potted Top Entry
SKU: T0023200

Overview

The Dakota NDT T0023200 is a 7.5 MHz dual-element ultrasonic transducer designed for high-resolution thickness measurement, corrosion monitoring, and remaining-wall evaluation.

Its 1/4 in contact size provides a compact inspection footprint for piping, tubing, curved components, localized corrosion areas, and other applications where a larger transducer may be difficult to position.

The transducer incorporates a high-damped (HD) design to reduce ringing and shorten ultrasonic pulse duration. This supports improved near-surface resolution and clearer separation of closely spaced echoes, making it useful for precision thickness-gauging applications on suitable materials.

A permanently potted top-entry cable provides a secure probe connection while keeping the cable routed directly from the top of the transducer for straightforward handling during field, maintenance, and QA/QC inspections.

What's Included

Note: Ultrasonic thickness gauge, couplant, calibration standards, adapters, and other accessories are not included unless specified separately.

Box Dimensions & Shipping Weight (Estimated)

Actual shipping dimensions and weight may vary depending on cable length and protective packaging.

Key Specifications

Performance Features

7.5 MHz Operating Frequency
Provides higher ultrasonic resolution than lower-frequency probes, making it well suited for suitable thinner materials and applications requiring more detailed thickness measurements.

High-Damped Construction
Helps reduce ringing and shorten pulse duration, supporting improved near-surface response and better separation of closely spaced echoes.

Dual-Element Design
Separate transmitting and receiving elements support reliable corrosion and remaining-wall measurements while improving performance near the inspection surface.

1/4 in Compact Contact Size
Allows use on piping, tubing, small-radius components, localized wall-loss areas, and other locations where a compact probe is advantageous.

Potted Cable Configuration
The permanently attached cable provides a secure probe connection and eliminates the need for a detachable connector at the transducer.

Top-Entry Cable
Routes the cable from the top of the transducer for conventional probe handling and straightforward positioning.

High-Damped Design Advantages

The HD configuration may provide useful benefits in suitable ultrasonic applications, including:

• Reduced transducer ringing

• Shorter ultrasonic pulse duration

• Improved near-surface resolution

• Better echo separation

• Clearer back-wall response

• Improved performance on thinner sections

• More precise localized thickness measurements

• Useful response for corrosion and erosion evaluation

Actual performance depends on material type, thickness, geometry, surface condition, couplant, instrument setup, and calibration.

High-Frequency Inspection Advantages

The 7.5 MHz operating frequency can be beneficial when finer resolution is required.

Potential advantages include:

• Better resolution on thinner materials

• Improved separation of closely spaced echoes

• Enhanced near-surface measurement capability

• More precise localized inspection

• Suitable response on smooth and fine-grained materials

• Practical for small components and thin-wall piping

Higher-frequency probes generally provide less penetration than lower-frequency transducers, so application suitability should be evaluated for thick, coarse-grained, or highly attenuative materials.

User-Friendly Design

• Compact 1/4 in probe footprint

• High-frequency response supports detailed measurement

• Dual-element design supports corrosion monitoring

• High-damped construction improves echo clarity

• Top-entry cable supports conventional handling

• Potted construction provides a fixed probe connection

• Suitable for spot measurements and manual scanning

• Practical for portable ultrasonic thickness-gauge systems

Built for Industrial Environments

• Designed for professional ultrasonic thickness testing

• Suitable for fabrication, manufacturing, maintenance, and QA/QC

• Practical for piping, tubing, tanks, and pressure components

• Supports recurring corrosion-monitoring programs

• Compact geometry assists with localized inspection points

• Fixed cable configuration supports routine field handling

• Suitable for precision wall-thickness evaluation

• Intended for use with appropriate ultrasonic couplant and calibration procedures

Compatibility

Compatible with:

• Dakota ultrasonic thickness gauges supporting dual-element transducers

• Instruments configured for 7.5 MHz probe operation

• Corrosion thickness-gauging modes

• Pulse-echo ultrasonic measurement procedures

• Appropriate ultrasonic couplants

• Known-thickness calibration standards

• Carbon steel, stainless steel, aluminum, and other suitable materials

• Field and laboratory ultrasonic inspection programs

Instrument model, cable termination, measurement range, material, surface condition, and probe compatibility should be confirmed before ordering.

Ideal Applications

• Precision thickness measurement

• Corrosion monitoring

• Remaining-wall evaluation

• Thin-wall piping inspection

• Small-diameter piping inspection

• Tubing inspection

• Pipeline inspection

• Pressure-vessel inspection

• Storage-tank inspection

• Boiler and heat-exchanger inspection

• Localized corrosion surveys

• Erosion monitoring

• Fabrication QA/QC

• Preventive maintenance

• Asset-integrity programs

• Field ultrasonic testing

Typical Components Inspected

The T0023200 may be suitable for:

• Process piping

• Small-diameter tubing

• Thin-wall components

• Pressure vessels

• Storage tanks

• Boiler tubes

• Heat exchangers

• Structural members

• Plates

• Elbows and reducers

• Machinery components

• Localized corrosion areas

• Fabricated metallic parts

Inspection Guidelines

• Verify that the ultrasonic gauge supports 7.5 MHz dual-element transducers

• Clean loose scale, dirt, and contamination from the inspection point

• Apply an appropriate ultrasonic couplant

• Calibrate the instrument using a known reference thickness

• Verify the correct material sound velocity

• Position the probe firmly against the inspection surface

• Maintain consistent probe pressure and orientation

• Obtain a stable and repeatable thickness reading

• Take additional measurements where corrosion or erosion is irregular

• Recalibrate periodically according to the written inspection procedure

• Record measurement locations and thickness values for future comparison

Care and Handling

• Avoid dropping or striking the transducer

• Keep the probe face clean

• Remove couplant after inspection

• Inspect the contact surface regularly for wear

• Check the potted cable transition for damage

• Do not pull or carry the probe by the cable

• Avoid sharp bends, twisting, or pinching of the cable

• Protect the transducer from excessive temperatures unless specifically rated for elevated-temperature use

• Store in a clean, dry location

• Replace the transducer if wear or damage affects measurement repeatability

About Dakota NDT

Dakota NDT develops ultrasonic thickness gauges, flaw detectors, transducers, cables, couplants, and related accessories for professional non-destructive testing. Its products support corrosion monitoring, precision thickness measurement, fabrication, manufacturing, maintenance, asset integrity, and industrial quality-control applications.