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DHT Series High Temperature UT Transducer

DHT400 High Temperature Ultrasonic Transducers | Advantage NDT Supplies

High Temperature Ultrasonic Transducers are designed to operate in environments with elevated temperatures, typically above the range suitable for standard transducers. These transducers are employed in various industrial applications where high temperatures are present, such as in manufacturing, power generation, and materials testing. The use of ultrasonics in high-temperature environments allows for non-destructive testing, monitoring, and measurements. 

Sensor Network Model DHT-400 & DHT-410 High Temperature Ultrasonic Transducers are Dual Element Transducers, general-purpose transducer for measuring the remaining wall thickness on rough metal ID and OD surfaces due to corrosion and/or erosion.

The transducer can be used intermittently (50% duty cycle) over a wide temperature range from 0 to 932°F (-17.8 to 500°C) and continuously
from 0 to 400°F (-17.8 to 204°C).

Typical applications include its use with common digital thickness  gauges or ultrasonic flaw detectors on boiler/furnace tubes, pipes, tanks, vessels,
structures and other safety-critical components at power plants, refineries, mid- and up-stream Oil & Gas assets, and chemical facilities.

High temperature ultrasonic transducers are constructed using materials that can withstand elevated temperatures. This includes the selection of piezoelectric materials, backing materials, and protective housings that can resist thermal degradation.

Common materials for high-temperature transducers include certain ceramics, metals, and specialized polymers. 

High temperature ultrasonic transducers find applications in industries like metallurgy, aerospace, power generation, and petrochemicals.

Examples of applications include testing the integrity of materials at high temperatures, monitoring the condition of components in industrial furnaces, and inspecting pipelines.


DHT-400 High Temperature Ultrasonic Tranducers

DHT-410 High Temperature Ultrasonic Transducers


Contact Diameter

Min. & Max. Thickness  (Steel)

Continuous Contact Temperature

Maximum Contact Temperature

Duty Cycle

5 MHz

0.440″ (11.2mm)

Min.: 0.040″ (1.0mm) to Max.: 10″ (254mm)

400°F (204°C)

932°F (500°C) Intermittent

50% at 10 Seconds (max recommended)

7.5 MHz

0.283″ (7.2mm)

Min.: 0.028″ (0.7mm) to Max.: 4″ (102mm)

200°F (93°C)

300°F (149°C) Intermittent

50% at 10 Seconds (max recommended)

DHT Ultrasonic High Temperature Transducer