High Temperature Acoustic Emission Sensors
AE sensors for elevated-temperature testing, monitoring, and harsh industrial environments
High temperature acoustic emission sensors are designed for AE testing and monitoring on components where standard AE sensors cannot be directly used due to elevated surface temperature. In high-temperature applications, engineers usually choose between two solutions: direct installation of a high-temperature AE sensor, or a waveguide rod with a standard AE sensor installed away from the heat source. The selection depends on operating temperature, exposure time, coupling method, signal attenuation, installation space, and monitoring requirements.
Qawrums provides high-temperature AE sensors and waveguide-based installation solutions for pressure vessels, pipelines, valves, boilers, furnaces, thermal equipment, and other harsh industrial environments.
Available High Temperature AE Sensor Models
Browse the high temperature AE sensor models below to compare frequency range, sensitivity, temperature rating, structure, size, connector type, installation method, and typical applications. Click each model for detailed specifications and high-temperature installation guidance.
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GH150/2 High Temperature Acoustic Emission Sensor | 150 kHz, 170°C
GH150/2 is a 150 kHz high temperature acoustic emission sensor with ceramic face, SUS-304 housing, IP68 protection and integral BNC cable for monitoring up to 170°C.
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GH150 150kHz High Temperature AE Sensor with 1-1.2m Flexible Metal Tube
GH150 is a compact 150 kHz ultra-high temperature AE sensor with an extended 1–1.2 m metal tube and 2m cable for monitoring hot metallic structures up to 600°C.
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GH150/1 150kHz High Temperature AE Sensor with 0.5m Flexible Metal Tube
GH150/1 is a compact 150kHz high temperature AE sensor with an extended 0.5m metal tube and 2m cable for monitoring hot metallic structures up to 350°C.
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GH150/1 High Temperature AE Sensor | 350°C, 170 kHz, Magnetic Mounting
GH150/1 (Magnetic) is a 170 kHz high temperature acoustic emission sensor for monitoring up to 350°C, featuring stainless/Invar metal contact surfaces, IP68 protection, integral BNC cable and magnetic or clamp mounting.
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GH150 High Temperature AE Sensor | 600°C, 260 kHz, Magnetic Mounting
GH150 (Magnetic) is a 260 kHz ultra-high temperature acoustic emission sensor for monitoring up to 600°C, featuring stainless Invar steel contact surfaces, IP68 protection, 20cm heat-resistant metal tube and 3m integral BNC cable.
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High Temperature AE Sensor or Waveguide Solution?
For high-temperature acoustic emission applications, there are usually two installation options: using a high-temperature AE sensor directly on the test surface, or using a waveguide rod with a standard AE sensor installed away from the heat source. The best choice depends on surface temperature, exposure time, installation space, coupling method, signal attenuation, and monitoring requirements.
High-temperature AE sensors provide a more direct signal path and are suitable when the sensor can safely withstand the operating temperature. They usually offer better signal transmission, easier installation, and more reliable source location compared with long waveguide structures. However, their temperature rating, cable type, coupling material, and exposure duration must be carefully checked.
A waveguide solution is recommended when the surface temperature exceeds the sensor rating, when long-term thermal protection is required, or when the sensor must be kept away from radiation, steam, flame, or other harsh conditions. The limitation is that the waveguide may introduce signal attenuation, frequency response changes, additional reflections, and installation complexity. Therefore, calibration and field verification are important before formal monitoring.
If you are not sure which solution is suitable, please provide the surface temperature, material, AE source type, installation conditions, and monitoring duration. Our technical team can recommend a high-temperature AE sensor or a waveguide-based installation solution.
| Solution | Advantages | Limitations | Recommended Use |
| High-temperature AE sensor | More direct signal path, better signal transmission, easier source location, simpler installation | Limited by sensor temperature rating, cable, coupling material, and exposure time | Medium to high temperature applications where the sensor can safely contact the surface |
| Waveguide + standard AE sensor | Protects the sensor from extreme heat, steam, flame, or radiation; easier sensor replacement | Signal attenuation, frequency response change, reflections, more complex installation | Very high temperature surfaces, long-term monitoring, or harsh environments beyond sensor rating |
About Qawrums AE Sensors
Qawrums (also known as QingCheng) is an ISO 9001:2015 manufacturer and supplier of acoustic emission sensors, AE acquisition systems, and condition monitoring solutions. We provide general purpose AE sensors, broadband sensors, high-temperature sensors, integral preamplifier sensors, intrinsically safe sensors, miniature sensors, and customized sensor solutions for industrial testing and structural health monitoring.
Our technical team supports sensor selection based on frequency range, sensitivity, installation conditions, operating temperature, cable length, and application requirements. Contact us if you need help choosing a suitable AE sensor for your project.
