QAWRUMS GI40/2 Piezoelectric AE Sensor, 40 kHz, >75dB, IP68, SUS-304 Stainless Steel, Ceramic Face, BNC Connector, 10m Cable

The integrated 40dB preamplifier requires a 28V DC power supply, which is typically provided through the signal cable by compatible Acoustic Emission data acquisition systems or preamplifier power modules. Ensure your monitoring system can supply this voltage on the BNC line to activate the sensor's signal conditioning.

Yes, the GI40/2 is designed for permanent submerged deployment. Its SUS-304 stainless steel housing and IP68 waterproof rating protect the internal piezoelectric element and preamplifier from long-term exposure to liquids, making it suitable for monitoring underwater pipelines, tanks, or marine structures.

The ceramic face serves as the acoustic coupling interface and the active piezoelectric element. It provides high mechanical stiffness and excellent acoustic impedance matching to metallic or hard surfaces, ensuring efficient transfer of stress waves from the monitored structure into the sensor for high-sensitivity detection of emission events.

The sensor is typically mounted using a viscous couplant (like silicone grease or specialized AE gel) and secured with magnetic holders, adhesive, or mechanical clamps to ensure firm, continuous acoustic contact with the test surface. The flat ceramic face must be fully coupled to the material for optimal signal transmission.