Monitoring acoustic emission sensor GH150

for pipesfor process monitoringfor metal structure inspection

Overview
The GH150 is a compact 150 kHz acoustic emission (AE) sensor designed for direct monitoring and NDT on hot metallic surfaces up to 600°C. It integrates a stainless Invar steel contact face and shell, a 1–1.2 m high-temperature flexible metal tube to isolate the cable, and a 2 m integral cable with BNC connector.

Features

• Resonant frequency: 150 kHz
• Operational frequency range: 60 kHz – 400 kHz
• Extended 1–1.2 m flexible high-temperature metal tube
• Integral 2 m cable terminated with BNC connector
• Compact cylindrical body Ø19 × 19.5 mm
• H20 hold-down compatible; this version has no magnetic base
• Ingress protection: IP68

When to Use GH150

• Direct AE monitoring on hot metallic structures where a compact 150 kHz sensor is required
• High-temperature pressure vessel inspection and monitoring
• Pipeline AE monitoring in hot process environments
• Tank and process equipment monitoring at elevated temperatures
• High-temperature structural testing and field troubleshooting
• Situations where an extended metal tube is needed to keep the cable connection away from direct heat
• Applications requiring AE sensing up to 600°C

Applications

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

Installation Notes

• Verify the actual mounting surface temperature is within the sensor working range
• Clean and prepare the mounting surface before installation
• Use a suitable high-temperature couplant compatible with the measured surface temperature
• Use the recommended H20 hold-down to ensure stable contact pressure
• Route and keep the cable connection away from direct heat exposure when possible
• Avoid sharp bends, cable tension or mechanical impact near the sensor
• Verify channel response prior to formal testing; perform regular verification for long-term monitoring

Compatible Accessories

• Preamplifiers: PAS / PAV
• Hold-down: H20
• Signal cable models: SYV-50-3 / STYV-50-2

FAQ (selected)

• Q1: What is the maximum working temperature of GH150? A1: The GH150 operates from -20°C to 600°C when installed with appropriate coupling, mounting force and cable routing.
• Q2: What is the resonant frequency of GH150? A2: Resonant frequency is 150 kHz; operational bandwidth is approximately 60 kHz–400 kHz.
• Q3: Does this GH150 sensor have a magnetic base? A3: No. This version does not include a magnetic base; it is designed for H20 hold-down installation. A magnetic-mount version is available separately.
• Q6: Does GH150 have a built-in preamplifier? A6: No. GH150 is a passive AE sensor and requires a compatible external preamplifier such as PAS or PAV.

Technical specifications

• Resonant frequency: 150 kHz
• Frequency range: 60 kHz – 400 kHz
• Sensitivity peak: >40 dB
• Operating temperature: -20°C to 600°C
• Size (Ø×H): 19 × 19.5 mm
• Weight: 125 g
• Case material: stainless Invar steel / copper
• Face material: stainless Invar steel / copper
• Ingress protection: IP68
• Connector: BNC on integral cable (side)
• Cable length: 2 m
• High-temperature metal tube length: 1–1.2 m
• Accessories: signal cable SYV-50-3 / STYV-50-2; hold-down H20; compatible preamplifiers PAS / PAV