Description
Product Video
Features
Performance
Test Conditions: Temperature 23 ℃, Relative Humidity 50 %RH
Dimensions
Microphone
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AWA14423C 1/2" Prepolarized Free-Field Infrasound Sensor
Ultra-low frequency measurement capability: Extends down to 0.1 Hz, enabling accurate infrasound and sonic boom detection beyond conventional microphones.
High sensitivity and wide dynamic range: 50 mV/Pa sensitivity with a dynamic range from 16 dBA to 146 dB ensures precise measurement from low-level noise to high-intensity acoustic signals.
Free-field precision design with high stability: Optimized for anechoic and semi-anechoic environments, delivering stable, reflection-free acoustic measurements with excellent consistency.
Wide environmental adaptability & durability: Operates in -30°C to +80°C and 0–100% RH, with corrosion-resistant alloy diaphragm and cleanroom assembly for long-term reliability.
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Class 1SLM -
Mobile App -
IEC61672
01
Product Description
The AWA14423C prepolarized free-field infrasound sensor is designed specifically for infrasound measurement scenarios, but can also be used for 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-low frequency limit of 0.1 Hz, 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 building acoustic assessment.
Product Video
Features
Wide frequency range of 0.1 Hz to 20 kHz, covering both infrasound and audible acoustic bands
High sensitivity of 50.0 mV/Pa (@250 Hz ± 2.0 dB) for precise signal detection
Wide dynamic range from 16 dBA to 146 dB, suitable for measurements from low-level ambient noise to high-intensity acoustic events
Low noise floor of ≤16 dBA for high-resolution measurement of weak signals
Prepolarized design (0 V polarization voltage), eliminating the need for external polarization power supply
Free-field type sensor optimized for anechoic and semi-anechoic environments, ensuring stable, reflection-free acoustic measurement
Compliant with IEC 61094 WS2F standard
Supplied with an independent calibration certificate for traceable measurement accuracy
Suitable for infrasound measurement, noise source localization, equipment acoustic performance testing, and building acoustic assessment
OEM/ODM customization available. Learn more.
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AWA14423C Prepolarized Free-Field Infrasound Sensor |
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Field Type |
Free Field |
Lower limit frequency (-3dB) (Hz) |
0.1 |
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Diameter |
1/2 inches |
Operating Temperature (°C) |
-30～+80 |
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IEC 61094 |
WS2F |
Temperature coefficient (dB/℃) (@250 Hz) |
-0.01（-10 ℃～50 ℃） |
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Polarization Voltage (V) |
0 |
Static pressure coefficient (dB/kPa) |
-0.01 |
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Sensitivity (mV/Pa) (@250 Hz ± 2.0 dB) |
50.0 |
Operating humidity range (%RH) |
0～100 |
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Frequency range (Hz) |
0.1～20k |
Height with grid (mm) |
17.5 |
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Capacitance (pF) (@250 Hz) |
18 |
Diameter with grid (mm) |
13.2 |
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Dynamic Range |
16 dBA～146 dB |
Height without grid (mm) |
16.6 |
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Noise floor (dBA) |
≤16 |
Diameter without grid (mm) |
12.7 |
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Voltage Equalization Method |
Side Equalization |
Preamplifier Fitting Thread |
11.7 mm-60 UNS |
Frequency Response
Aihua Instruments TO KNOW MORE ABOUT Aihua Instruments, PLEASE CONTACT US！
- marketing@hzaihua.com
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No.37 Xianxing Rd Xianlin Town Yuhang District Hangzhou Zhejiang China
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