Eta450 Ultra
Optical Microphone
The Eta450 Ultra membrane-free optical microphone is XARION’s most sensitive device. It is designed for contact-free ultrasound material testing. The frequency bandwidth expands from 50 kHz to 2 MHz making the sensor the perfect match for broadband, laser-ultrasound excitation. This small-sized and contact-free testing setup is particularly suitable for the characterization of composite materials, weld spots and adhesive joints.
Features
- Membrane-free optical microphone
- Frequency range 50 kHz–2 MHz
- Self-noise: 5 µPa (BW: 1 Hz, measured @ 500 kHz)
- Max. sound pressure for THD < 3%: 40 Pa
- Dynamic range: 30-130 dB SPL @ 50 kHz-2 MHz
