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Our product range covers sound level meters, noise dosimeters, calibrators, audiometric calibration systems, microphones, and acoustic analyzers — over 60 varieties engineered to satisfy ISO/IEC international metrological benchmarks.
High-accuracy reference acoustic source engineered for on-site field calibration and laboratory validation of 1/2-inch and 1/4-inch measurement microphones.
State-of-the-art MEMS microphone array acoustic camera for transient sound localization, industrial noise emission diagnostics, and structural resonance tracking.
Precision Class 1 sound level meter and 1/1 & 1/3 octave real-time frequency analyzer designed for rigorous environmental and occupational vibration-acoustic compliance.
Laboratory-grade prepolarized free-field measurement microphone capsule featuring ultra-flat frequency response, low self-noise, and wide dynamic range.
In modern industrial physics and calibration engineering, precision vibration sensing and acoustic metrology form the inseparable backbone of quality assurance, structural dynamic testing, and international traceability chains.
Acoustic and vibration calibration laboratories require unbroken chains of calibration back to primary SI standards (laser Doppler vibrometry and reciprocity calibration), ensuring measurement uncertainty meets rigorous verification criteria.
Instrumentation must comply strictly with international directives including ISO 16063 (calibration of vibration transducers), IEC 61672 (sound level meters), ISO 8041 (human vibration response), and ANSI S1.4 acoustic standards.
Next-generation metrology platforms leverage embedded digital signal processors (DSP), cloud-synchronized calibration certificates, temperature-compensated electronics, and automated frequency sweep algorithms for sub-ppm reproducibility.
The global vibration and acoustic measurement landscape is witnessing unprecedented transformation. Driven by stringent environmental noise regulations, high-speed rail development, aerospace structural validation, electric vehicle (EV) quiet powertrain optimization (NVH), and semiconductor cleanroom micro-vibration monitoring, calibration laboratories are subjected to escalating demands for ultra-low measurement uncertainties.
In high-precision calibration workflows, acoustic noise and mechanical vibration are tightly coupled physical phenomena. For example, microphonic susceptibility in accelerometers or structural vibration feedback in condenser microphone diaphragms can induce non-negligible errors during high-frequency sweeps. Aihua Instruments bridges this gap by fabricating both state-of-the-art vibration sensors and reference condenser microphones under one roof, guaranteeing cross-domain calibration fidelity across wide operational frequency spectrums (0.1 Hz to 20 kHz).
Deploying precision vibration measurement devices across critical metrological validation, structural analysis, and compliance audit environments.
In National Metrology Institutes and commercial third-party testing laboratories accredited under ISO/IEC 17025, calibrating working-standard accelerometers and acoustic sound level meters demands reference instruments with exceptional long-term stability and negligible cross-axis sensitivity. Utilizing dual-frequency, dual-level vibration calibrators (such as the AWA6071A) and acoustic calibrators (AWA6021A-L), technicians can establish repeatable calibration transfer standards with uncertainties within 0.2 dB across primary reference frequencies (such as 159.2 Hz and 1000 Hz).
With the transition toward Electric Vehicles (EVs), traditional internal combustion masking noise is eliminated, exposing high-frequency tonal whine, inverter electromagnetic resonance, and auxiliary equipment vibration. Multi-channel sound and vibration analyzers (like the AWA6228A series) synchronized with wide-dynamic-range accelerometers (AWA14415) allow engineers to perform 1/1 and 1/3 octave real-time analysis, transfer path analysis (TPA), and modal analysis to decouple structural vibrations from cabin acoustics.
Long-term exposure to hand-arm vibration (HAV) from pneumatic drills, grinding tools, and heavy machinery induces Hand-Arm Vibration Syndrome (HAVS) and vibration white finger (VWF). Dedicated dosimeters such as the AWA5937 measure tri-axial frequency-weighted acceleration (ahv), vibration dose value (VDV), and 8-hour equivalent continuous exposure A(8), providing irrefutable compliance records for workplace health authorities and industrial hygiene audits.
Urban construction, subway systems, and industrial plant operations generate continuous micro-vibrations and low-frequency ground-borne noise that affect sensitive architectural heritage sites and semiconductor lithography facilities. Utilizing low-noise environmental seismic accelerometers and multifunction sound level meters, metrology teams can conduct continuous unattended baseline logging with automated threshold alarming and narrow-band FFT spectral decomposition.
Founded in 1992, Aihua Instruments is a Hangzhou-based manufacturer specializing in precision acoustic testing and vibration measurement instrumentation. With over 30 years of unwavering dedication to the acoustic and vibration field, we have established ourselves as one of China's foremost high-tech enterprises in this domain. From our early days as a pioneering research institute to today's internationally recognized brand, our growth reflects a relentless commitment to technological excellence and customer satisfaction.
Notably, we design and manufacture our own measurement microphones in-house — from cartridge development to automated performance testing — giving us a critical quality advantage that few competitors can match.
Our facility features class-100 cleanrooms, automated laser micro-welding stations, precision acoustic anechoic chambers, and multi-axis vibration calibration benches ensuring utmost stability across product lines.
Your trusted global partner in high-precision acoustic and vibration measurement instrumentation.
Our fully equipped manufacturing facility features advanced automated test systems, ensuring every product meets strict quality benchmarks before leaving the factory.
Identified as a provincial High-tech Enterprise R&D Center, our dedicated engineering team continuously drives innovation in digital detection, signal processing, and remote monitoring technologies, and supports OEM/ODM partnerships.
Our management systems and products hold ISO 14001, ISO 45001, CE, and RoHS certifications, demonstrating our commitment to environmental responsibility, workplace safety, and global compliance.
We export to over 40 countries across Europe, North America, South America, and Asia, with a strong reputation built on consistent quality and competitive pricing.
Backed by professional engineers, we deliver responsive, expert support throughout the entire product lifecycle, ensuring our customers always have the assistance they need.
From individual reference accelerometers to turnkey multi-channel sound and vibration calibration benches, we deliver full-scope metrology systems tailored to local & international mandates.
Explore our flagship series of dynamic vibration calibrators, accelerometers, noise analyzers, and microphone cartridges trusted by test laboratories worldwide.
Advancing metrology compliance, acoustic verification, and vibration calibration through technological innovation and uncompromising precision engineering.
