AWA14523 1/2" Prepolarized Free-Field Infrasound Broadband Sensor

Ultra-wide frequency response (0.1 Hz–40 kHz): Covers infrasound, audible sound, and ultrasonic ranges in a single sensor, enabling multi-scenario acoustic measurement.

High sensitivity with wide dynamic range: 31.6 mV/Pa sensitivity and 20–153 dB dynamic range ensure accurate capture from weak infrasound to high-intensity signals.

Professional free-field measurement design: Optimized for anechoic and semi-anechoic environments, ensuring accurate directional sound and noise source analysis.

Strong environmental adaptability & reliability: Operates from -30°C to +80°C and 0–100% RH, with low temperature and pressure drift for stable long-term performance.

Class 1SLM
Mobile App
IEC61672

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Features

Performance

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Product Description

The AWA14523 prepolarized free-field infrasound broadband sensor is designed for both infrasound and ultrasonic measurement scenarios and conventional acoustic measurements. It includes an independent calibration certificate and is suitable for acoustic environments with no reflection or only incident sound waves in a specific direction (such as anechoic chambers and semi-anechoic chambers). It features an ultra-wide frequency range of 0.1 Hz to 40 kHz, high sensitivity, and strong stability. It supports connection to mainstream acoustic analysis instruments and is widely used in infrasound measurement, noise source localization, equipment acoustic performance testing, and architectural acoustic assessment.

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Features

Applications of Prepolarized Free Field Infrasound Broadband Sensors

The prepolarized free-field infrasound broadband sensor has a wide measurement frequency range, with a lower frequency limit down to 0.1 Hz. It is suitable for various measurement scenarios, including infrasound measurement and sonic boom measurement. It is compatible with conventional acoustic and some ultrasonic signal measurements and is used in acoustic research, noise monitoring, and sound system testing.

Quality and Warranty

The infrasound sensors utilize a second-generation alloy diaphragm, a high-strength protective grid, and a synthetic corundum insulator, making them stable and reliable measurement microphones on the market. Compared to traditional nickel and stainless steel, the alloy diaphragm offers superior corrosion resistance, high-temperature stability, shock resistance, and specific strength.

Compatibility

The AWA14523 infrasound broadband sensor is compatible with IEPE or conventional preamplifiers from various manufacturers. IEPE is a general-purpose constant current source power supply technology used in preamplifiers.

Calibration

Each infrasound sensor is calibrated at the factory using traceable calibration equipment and comes with a calibration certificate. Recalibration is recommended at least annually.

OEM Solutions

OEM/ODM customization available. Learn more.

Main Performance Indicators

AWA14523 Prepolarized Free-Field Infrasound Broadband Sensor
Field Type	Free Field	Lower limit frequency (-3dB) (Hz)	0.1
Diameter	1/2 inches	Operating Temperature (°C)	-30～+80
IEC 61094	WS2F	Temperature coefficient (dB/℃) (@250 Hz)	-0.01
Polarization Voltage (V)	0	Static pressure coefficient (dB/kPa)	-0.01
Sensitivity (mV/Pa) (@250 Hz ± 2.0 dB)	31.6	Operating humidity range (%RH)	0～100
Frequency range (Hz)	0.1～40k	Height with grid (mm)	13.3
Capacitance (pF) (@250 Hz)	14（@250 Hz）	Diameter with grid (mm)	13.2
Dynamic Range	20 dBA～153 dB	Height without grid (mm)	12.5
Noise floor (dBA)	≤20	Diameter without grid (mm)	12.7
Voltage Equalization Method	Side Voltage Equalization	Preamplifier Fitting Thread	11.7 mm-60 UNS