Description
Product Video
Features
Performance
Test Conditions: Temperature 23 ℃, Relative Humidity 50 %RH
Dimensions
Microphone
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AWA14431 1/4" Prepolarized Free-Field Wideband Measurement Microphone
Ultra-wide frequency response (3.15 Hz–80 kHz): Enables precise measurement of both audible and ultrasonic signals for advanced acoustic analysis and testing.
High SPL handling capability (up to 165 dB): Supports high-intensity sound environments, suitable for industrial noise and ultrasonic applications.
Free-field precision design: Optimized for anechoic and semi-anechoic environments, ensuring accurate directional sound measurement and noise source localization.
High stability and wide environmental adaptability: Reliable performance across -30°C to +80°C and 0–100% RH with excellent long-term consistency and low drift.
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Class 1SLM -
Mobile App -
IEC61672
01
Product Description
The AWA14431 prepolarized free-field wideband measurement microphone is designed for free-field acoustic measurement scenarios. It includes an independent calibration certificate and is suitable for acoustic environments with no reflections or only incident sound waves in a specific direction (such as anechoic chambers and semi-anechoic chambers). It features a flat frequency response of 3.15~80 kHz, can withstand sound pressure levels up to 165 dB, and is characterized by its compact size and high stability. The kit supports connection to mainstream acoustic analysis instruments and is widely used in noise source localization, equipment acoustic performance testing, ultrasonic testing, and other fields.
Product Video
Features
High sound pressure handling up to 165 dB, suitable for high-intensity industrial noise and ultrasonic applications
Sensitivity of 4.0 mV/Pa (@250 Hz ± 2.0 dB), calibrated for accurate wideband signal capture
Noise floor of ≤40 dBA, suited for demanding high-frequency and high-SPL measurement tasks
Free-field type structure conforming to the IEC 61094 WS3F standard, ensuring accurate directional sound measurement and noise source localization
Compact 1/4 inch diaphragm (7 mm diameter with grid / 6.35 mm without grid; 10.4 mm height with grid / 9.1 mm without grid), suited for confined or precision testing setups
Post-equalization voltage equalization method for consistent high-frequency response
Standard 5.7 mm-60 UNS preamplifier fitting thread, compatible with mainstream acoustic analysis instruments
Low temperature coefficient of -0.01 dB/°C (@250 Hz, -10°C to 50°C) for stable performance across temperature variation
Low static pressure coefficient of -0.005 dB/kPa, minimizing measurement drift under atmospheric pressure changes
Broad environmental adaptability: operates across -30°C to +80°C and 0–100% RH with excellent long-term consistency and low drift
OEM/ODM customization available. Learn more.
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AWA14431 Prepolarized Free-Field Wideband Measuring Microphone |
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Field Type |
Free Field |
Lower limit frequency (-3dB) (Hz) |
3.15 |
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Diameter |
1.4 inches |
Operating Temperature (°C) |
-30～+80 |
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IEC 61094 |
WS3F |
Temperature coefficient (dB/℃) (@250 Hz) |
-0.01（-10 ℃～50 ℃） |
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Polarization Voltage (V) |
0 |
Static pressure coefficient (dB/kPa) |
-0.005 |
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Sensitivity (mV/Pa) (@250 Hz ± 2.0 dB) |
4.0 |
Operating humidity range (%RH) |
0～100 |
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Frequency range (Hz) |
3.15～80k |
Height with grid (mm) |
10.4 |
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Capacitance (pF) (@250 Hz) |
0 |
Diameter with grid (mm) |
7 |
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Dynamic Range |
40 dBA～165 dB |
Height without grid (mm) |
9.1 |
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Noise floor (dBA) |
≤40 |
Diameter without grid (mm) |
6.35 |
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Voltage Equalization Method |
Post-Equalization |
Preamplifier Fitting Thread |
5.7 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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