Dakota NDT — T-214-2001 Dual-Element High-Temperature Transducer

5.0 MHz, 1/2 in Dual-Element Ultrasonic Transducer, High-Damped, High-Temperature, Microdot Top Connection, Rated up to 900°F
SKU: T-214-2001

Overview

The Dakota NDT T-214-2001 is a 5.0 MHz dual-element ultrasonic transducer designed for high-temperature thickness measurement and corrosion-monitoring applications on industrial components operating at elevated temperatures.

Its high-temperature construction supports inspections on surfaces reaching approximately 900°F (482°C) when used within the applicable operating limits and inspection procedure. This makes it suitable for applications where piping, vessels, process equipment, or machinery cannot be cooled or taken out of service before thickness measurements are performed.

The transducer features a 1/2 in contact size, providing a stable inspection footprint and useful acoustic energy for a wide range of industrial components. Its high-damped (HD) design helps shorten ultrasonic pulse duration and reduce ringing, supporting improved near-surface resolution and clearer echo separation.

A top-mounted Microdot connector provides a detachable cable interface, allowing the cable to be replaced independently from the transducer and supporting flexible integration with compatible Dakota ultrasonic instruments.

What's Included

Note: Ultrasonic thickness gauge, Microdot cable, high-temperature 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 protective packaging.

Key Specifications

Temperature Capability

Actual allowable contact time at or near the maximum rated temperature depends on the transducer duty cycle, material, couplant, probe condition, surface condition, and inspection procedure.

Performance Features

900°F High-Temperature Capability
Designed for ultrasonic thickness measurements on very hot industrial surfaces, helping reduce the need for shutdown or cooling solely for inspection.

5.0 MHz Operating Frequency
Provides a practical balance between ultrasonic resolution and penetration for industrial wall-thickness measurements.

High-Damped Construction
Helps reduce ringing and shorten pulse duration, supporting improved near-surface response and cleaner echo separation.

Dual-Element Design
Separate transmitting and receiving elements support reliable corrosion and remaining-wall measurements on suitable hot components.

1/2 in Contact Area
Provides stable coupling and useful acoustic energy for piping, vessels, tanks, plates, and other industrial equipment.

Top Microdot Connection
Provides a detachable cable interface while keeping the cable connection directly above the probe.

High-Damped Design Advantages

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

• Reduced transducer ringing

• Shorter ultrasonic pulse duration

• Improved near-surface resolution

• Better separation of closely spaced echoes

• More distinct back-wall signals

• Improved measurement stability

• Useful response on corroded or eroded surfaces

• Better clarity in demanding thickness-measurement applications

Actual performance depends on material type, temperature, thickness, geometry, surface condition, couplant, and gauge configuration.

Detachable Microdot Connection

The Microdot interface provides several practical advantages:

• Allows the cable to be replaced independently from the transducer

• Simplifies cable maintenance

• Supports compatible cable-length options

• Reduces the need to replace the complete probe if only the cable is damaged

• Provides a compact professional ultrasonic connection

• Supports easy integration with compatible ultrasonic instruments

• Helps simplify storage and transportation

Connector compatibility should be confirmed before selecting a probe cable.

User-Friendly Design

• 1/2 in contact area supports stable coupling

• High-damped response supports detailed thickness measurements

• Dual-element configuration supports corrosion monitoring

• Top connector provides straightforward cable routing

• Microdot interface allows detachable cable use

• Suitable for repeated high-temperature inspections

• Practical for spot measurements and corrosion surveys

• Easy to integrate with compatible Dakota ultrasonic systems

Built for High-Temperature Industrial Environments

• Designed for professional ultrasonic thickness testing

• Suitable for refineries and petrochemical plants

• Practical for chemical processing facilities

• Supports power-generation maintenance programs

• Suitable for hot piping and pressure vessels

• Useful for online inspection of operating equipment

• Supports recurring corrosion-monitoring programs

• Designed for demanding plant and field inspection conditions

• Intended for use with appropriate high-temperature couplants and procedures

High-Temperature Inspection Considerations

When inspecting hot components:

• Measure the actual surface temperature before probe contact

• Use a couplant rated for the required temperature

• Calibrate the instrument for the material and inspection temperature

• Account for temperature-related changes in sound velocity

• Limit probe contact time at high temperatures

• Allow the transducer to cool between measurements when necessary

• Follow the recommended probe duty cycle

• Inspect the transducer face regularly for thermal damage

• Monitor the Microdot connector and cable for heat exposure

• Use suitable thermal PPE

• Follow plant-specific hot-surface and process-safety requirements

Temperature changes can significantly affect ultrasonic sound velocity, so hot measurements may require correction or reference calibration.

Compatibility

Compatible with:

• Dakota ultrasonic thickness gauges supporting dual-element transducers

• Instruments configured for 5.0 MHz operation

• High-temperature corrosion-monitoring applications

• Pulse-echo ultrasonic thickness procedures

• Compatible Microdot cables

• High-temperature ultrasonic couplants

• Appropriate calibration blocks and standards

• Carbon steel and other suitable industrial metals

• Field and plant-based ultrasonic inspection programs

Instrument model, connector configuration, cable temperature rating, material, measurement range, and maximum inspection temperature should be confirmed before ordering.

Ideal Applications

• High-temperature thickness measurement

• Hot piping inspection

• Refinery process piping

• Petrochemical equipment inspection

• Chemical processing equipment

• Pressure-vessel inspection

• Boiler inspection

• Steam-line inspection

• Heat-exchanger inspection

• Storage-tank inspection

• Power-generation equipment

• Corrosion monitoring

• Remaining-wall evaluation

• Erosion monitoring

• Online inspection of operating equipment

• Preventive maintenance

• Asset-integrity programs

• Field ultrasonic testing

Typical Components Inspected

The T-214-2001 may be suitable for:

• Process piping

• Steam lines

• Boiler tubes

• Pressure vessels

• Reactor vessels

• Heat exchangers

• Storage tanks

• Valves

• Elbows and reducers

• Hot structural components

• Refinery equipment

• Power-generation components

• Industrial machinery

• Chemical process systems

Inspection Guidelines

• Verify that the ultrasonic gauge supports 5.0 MHz dual-element probes

• Confirm the surface temperature before inspection

• Clean loose scale and contamination from the measurement area

• Select a suitable high-temperature ultrasonic couplant

• Calibrate the gauge using the correct material velocity and reference standard

• Connect the probe using a compatible Microdot cable

• Apply couplant to the inspection point

• Position the probe firmly against the surface

• Obtain a stable and repeatable thickness reading

• Limit contact duration according to temperature and procedure

• Allow the transducer to cool when necessary

• Record thickness, location, and inspection temperature

Care and Handling

• Avoid dropping or striking the transducer

• Do not exceed the specified maximum temperature

• Avoid prolonged exposure at maximum temperature

• Inspect the probe face regularly for heat damage

• Keep the Microdot connector clean and dry

• Avoid overtightening the cable connection

• Disconnect cables by the connector rather than pulling on the cable

• Use only cables rated for the intended inspection conditions

• Remove couplant residue after inspection

• Allow the transducer to cool naturally after high-temperature use

• Store in a clean, dry location

• Replace the probe if heat damage or wear 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, high-temperature inspection, fabrication, manufacturing, maintenance, petrochemical processing, power generation, asset integrity, and industrial quality-control applications.