Description
Product Video
Features
Performance
Test Conditions: Temperature 23 ℃, Relative Humidity 50 %RH
Dimensions
Microphone
From Sound Level Meters and Acoustic Imagers to Calibrators and sound level sensor for professional testing and research.
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AWA14403 1/2" Free-Field Standard Microphone
Precision standard-grade design: Built strictly according to standard microphone specifications, suitable as a transfer standard for acoustic calibration.
High-frequency measurement capability (up to 40 kHz): Ensures accurate capture of wideband and high-frequency acoustic signals.
High stability with external polarization supply: Requires 200 V external polarization, delivering extremely stable and precise measurement performance.
Free-field accuracy for calibration applications: Optimized for anechoic and semi-anechoic environments, widely used in instrument calibration, acoustic research, and system testing.
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Class 1SLM -
Mobile App -
IEC61672
01
Product Description
The AWA14403 measuring microphone is designed strictly according to the specifications for standard microphones
The diaphragm uses a press-fit structure. The microphone requires external polarization power supply and has extremely high stability. Its frequency range is up to 40 kHz. It can be used as a transfer
standard in the calibration of acoustic measuring instruments and is also suitable for acoustic environments with no reflections or only incident sound waves in a specific direction (such as anechoic chambers and semi-anechoic chambers).
Product Video
Features
Applications of Free Field Standard Microphones
Free field standard microphones have a wide measurement frequency range, accurately measuring high-frequency sounds and are suitable for various measurement scenarios. Free field microphone kits are designed for environments without reflections or echoes and are widely used in acoustic research, noise monitoring, and sound system testing.
Quality and Warranty
The microphones utilize a second-generation alloy diaphragm, a high-strength protective grille, and synthetic corundum insulators, making them stable and reliable measuring 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. All microphones are assembled and tested in a Class 1000 cleanroom to ensure product consistency and stability. The microphones come with a one-year warranty, and we will provide users with comprehensive after-sales support services.
Compatibility
The AWA14403 standard microphone is compatible with conventional preamplifiers from various manufacturers on the market.
Calibration
Each measuring microphone 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.
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AWA14403 Free-Field Standard Microphone |
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Field Type |
Free Field |
Lower limit frequency (-3dB) (Hz) |
3.15 |
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Diameter |
1/2 inches |
Operating Temperature (°C) |
-30～+100 |
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IEC 61094 |
WS2F |
Temperature coefficient (dB/℃) (@250 Hz) |
-0.005（-10 ℃～50 ℃） |
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Polarization Voltage (V) |
200 |
Static pressure coefficient (dB/kPa) |
-0.005 |
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Sensitivity (mV/Pa) (@250 Hz ± 2.0 dB) |
14.1 |
Operating humidity range (%RH) |
0～100 |
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Frequency range (Hz) |
3.15～40k |
Height with grid (mm) |
13.3 |
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Capacitance (pF) (@250 Hz) |
18 |
Diameter with grid (mm) |
13.2 |
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Dynamic Range |
22 dBA～159 dB |
Height without grid (mm) |
12.5 |
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Noise floor (dBA) |
≤22 |
Diameter without grid (mm) |
12.7 |
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Voltage Equalization Method |
Side Voltage 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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