QAWRUMS G40 Resonant Piezoelectric AE Sensor, >75dB, 40KHz, -20℃~120℃, M5 Connector

The G40 utilizes a passive piezoelectric ceramic element that mechanically resonates at 40 kHz. When acoustic stress waves (emissions) from cracks, leaks, or material deformation strike the ceramic face, they generate a proportional electrical voltage output, which is transmitted via the M5 connector for analysis.

Yes, the G40 is a passive sensor without a built-in preamplifier. Its output signal must be conditioned and amplified by an external AE preamplifier or data acquisition system compatible with piezoelectric sensors before being processed by monitoring software.

The IP62 rating indicates protection against dust ingress and dripping water when tilted up to 15 degrees. It is suitable for indoor industrial environments, control cabinets, or sheltered outdoor locations but is not designed for direct water jets, submersion, or highly corrosive atmospheres.

Mount the sensor using its threaded housing onto a clean, flat surface on the test structure using a suitable couplant gel for optimal acoustic coupling. Then, connect a compatible cable with an M5 male connector to the sensor's output port to interface with your AE monitoring equipment.

This narrowband range is optimal for detecting low-frequency acoustic emissions common in structural monitoring, such as crack growth in metals and composites, leakage in pressurized systems, and corrosion activity, where signal energy is concentrated below 100 kHz, allowing for high signal-to-noise ratio detection.