Microphone Optique - XARION

Caractéristiques principales :

- Microphone optique sans membrane
- Pour des niveaux de pression sonore très élevés
- Gamme de fréquences : 10 Hz-1 MHz (acoustique et ultrasons)
- Plage dynamique : 100dB

Caractéristiques techniques :

Specifications	ETA100	ETA250	ETA450
Transducer type	Membrane-free, optical	Membrane-free, optical	Membrane-free, optical
Frequency range	10Hz – 1MHz	10Hz – 1MHz	5kHz – 2MHz
Dynamic range	100dB	100dB	100dB
Self-noise	1.5mPa (BW: 1Hz, measured @ 1kHz)	50µPa (BW: 1Hz, measured @ 1kHz)	5µPa (BW: 1Hz, measured @ 1kHz)
Self-noise, full bandwith	1.5Pa	50mPa	10mPa
Max. sound pressure for THD < 3%	12kPa	400Pa	40Pa
Max. sound pressure level for THD <3%	176dB rel. 20µPa	146dB rel. 20µPa	126dB rel. 20µPa
Damage threshold	>194dB rel. 20µPa	>194dB rel. 20µPa	>194dB rel. 20µPa
Sensitivity	0.35mV/Pa @ 1kHz (0dB gain, 50Ω)	10mV/Pa @ 1kHz (0dB gain, 50Ω)	100mV/Pa @ 1kHz (0dB gain, 50Ω)
Polar pattern	Omnidirectional	Omnidirectional	Omnidirectional
Sound field optimization	Free field and pressure field	Free field and pressure field	Free field and pressure field
Calibration	Yes, standard calibrators (with adapter)	Yes, standard calibrators (with adapter)	Yes, standard calibrators (with adapter)
Maximum output voltage	±15V (high impedance), ± 7.5V (50Ω)	±15V (high impedance), ± 7.5V (50Ω)	±15V (high impedance), ± 7.5V (50Ω)
Output impedance	50Ω	50Ω	50Ω
Output connector	BNC	BNC	BNC
Size of sensor head	diameter: 5mm; length: 38mm	diameter: 5mm; length: 38mm	diameter: 5mm; length: 35mm
Weight of sensor head	ca. 10g	ca. 10g	ca. 10g
Lenght of fiber-optic cable	5m (other upon request)	5m (other upon request)	5m (other upon request)
Size of signal conditioning unit	220mm x 334mm; height: 93mm	220mm x 334mm; height: 93mm	220mm x 334mm; height: 93mm
Weight of signal conditioning unit	8kg	8kg	8kg
Power supply	120/230V ±5%; 50/60Hz	120/230V ±5%; 50/60Hz	120/230V ±5%; 50/60Hz
Power consumption	<50W	<50W	<50W
Storage temperature	—20°C to 80°C (0°F to 175°F)	—20°C to 80°C (0°F to 175°F)	—20°C to 80°C (0°F to 175°F)
Operating temperature of sensor head	—20°C to 100°C (0°F to 210°F)	—20°C to 100°C (0°F to 210°F)	—20°C to 100°C (0°F to 210°F)
Operating temperature of signal conditioning unit	15°C to 30°C (60°F to 85°F)	0°C to 50°C (30°F to 120°F)	0°C to 50°C (30°F to 120°F)
Environmental humidity	non-condensing	non-condensing	non-condensing