GH150 150 kHz High Temperature Acoustic Emission Sensor with 1-1.2m Flexible Metal Tube

Description and Features

The GH150 is a compact 150 kHz high temperature acoustic emission sensor designed for structural monitoring and NDT applications on hot metallic surfaces up to 600°C.

With a stainless Invar steel shell and contact surface, 60–400 kHz frequency range, IP68 protection and integral BNC cable, GH150 is suitable for AE monitoring of pressure vessels, pipelines, tanks and other high-temperature metallic equipment.

This model is designed with a 1–1.2 m high-temperature resistant metallic tube and a 2 m cable, making it suitable for applications where the sensor needs to be installed near a hot surface while keeping the cable connection area away from direct heat exposure.

When to Use GH150

GH150 is recommended when a compact 150 kHz AE sensor is required for direct high-temperature monitoring on metallic structures.

Typical use cases include:

• High-temperature pressure vessel monitoring
• Pipeline AE monitoring in hot industrial environments
• Tank or process equipment monitoring
• High-temperature structural testing and troubleshooting
• Applications where an extended metal tube is preferred to keep the cable connection away from direct heat
• Applications requiring a 150 kHz AE sensor up to 600°C

GH150 is NOT recommended when magnetic mounting is required. If quick magnetic installation, cable tie mounting or custom clamp mounting is needed, the GH150 magnetic-mount version may be more suitable.

For applications with very long propagation distance, strong attenuation or heavy background noise, sensor frequency selection should be evaluated before testing. Although GH150 can operate up to 600°C, actual installation should still consider surface temperature, coupling condition, mounting force, cable routing and mechanical stability.

The 150 kHz resonant frequency makes GH150 suitable for many common AE monitoring applications on metallic structures. Compared with the magnetic-mount GH150 new model, this version provides a lower resonant frequency and a more compact cylindrical sensor body.

For high-temperature monitoring, the extended metal tube helps improve installation flexibility by keeping the cable connection area away from the hottest surface area.

Applications

GH150 is designed for acoustic emission monitoring in high-temperature industrial environments where ordinary AE sensors cannot be installed directly.

Common applications include:

• Pressure vessel AE testing
• High-temperature pipeline monitoring
• Storage tank and process equipment monitoring
• Nuclear power plant equipment monitoring
• Hot metallic component inspection
• High-temperature structural health monitoring
• Temporary field testing and troubleshooting on hot metal structures

Installation Notes

Proper installation is critical for reliable AE signal detection in ultra-high temperature applications. See "AE Sensor Coupling and Installation" for detailed information.

Recommended installation practices:

(1) Confirm that the actual mounting surface temperature is within the sensor’s working range

(2) Clean the mounting surface before sensor installation

(3) Use suitable high-temperature couplant according to the actual surface temperature

(4) Use the recommended H20 hold-down to maintain stable contact pressure

(5) Keep the cable connection and cable route away from direct heat exposure when possible

(6) Avoid sharp bending, cable tension or mechanical impact near the sensor

(7) Verify the channel response before formal testing or long-term monitoring

For long-term monitoring, regular channel verification or AST testing is recommended to confirm sensor coupling and signal path condition.

Compatible Accessories

- PAS / PAV preamplifier

- H20 hold-down

Related AE Sensors

FAQ

Q1: What is the maximum working temperature of GH150?

GH150 can operate from -20°C to 600°C. It is designed for high-temperature acoustic emission monitoring on metallic structures where standard AE sensors are not suitable. The actual installation should also consider surface condition, coupling, mounting force, cable routing and long-term mechanical stability.

Q2: What is the resonant frequency of GH150?

GH150 has a resonant frequency of 150 kHz and a frequency range of 60 kHz to 400 kHz. This makes it suitable for many common AE monitoring applications on metallic structures, including pressure vessels, pipelines, tanks and process equipment.

Q3: Does this GH150 sensor have a magnetic base?

No. This GH150 model does not use a magnetic base. It is designed with a compact cylindrical sensor body, extended high-temperature metallic tube and H20 hold-down installation. If magnetic or clamp mounting is required, the GH150 magnetic-mount version may be more suitable.

Q4: How is this GH150 different from the GH150 magnetic-mount version?

This GH150 model has a 150 kHz resonant frequency, 60–400 kHz frequency range, compact Φ19 × 19.5 mm body and extended 1–1.2 m metallic tube. The GH150 magnetic-mount version has a 260 kHz resonant frequency, larger rectangular body, 20 cm metal tube, 3 m cable and multiple mounting options including self-magnetic mounting.

Q5: Is GH150 suitable for pressure vessel monitoring?

Yes. GH150 can be used for acoustic emission monitoring of pressure vessels when the sensor installation position is within its working temperature range. Final selection should consider material, wall thickness, test pressure, attenuation, background noise, monitoring distance and target defect type.

Q6: Does GH150 have a built-in preamplifier?

No. GH150 is a passive acoustic emission sensor. It should be used with a compatible external AE preamplifier, such as PAS or PAV, and connected to an acoustic emission acquisition system for signal conditioning, data acquisition and analysis.

Further Information