Sound Level Meter Selection - Complete Guide
คู่มือการเลือกเครื่องวัดระดับเสียง
Introduction
Choosing the right sound level meter is crucial for accurate acoustic measurements. This comprehensive guide covers everything from basic Class 2 meters to advanced Class 1 precision instruments, helping you make an informed decision based on your specific requirements.
การเลือกเครื่องวัดระดับเสียงที่เหมาะสมเป็นสิ่งสำคัญสำหรับการวัดเสียงที่แม่นยำ คู่มือฉบับสมบูรณ์นี้ครอบคลุมทุกอย่างตั้งแต่เครื่องวัดคลาส 2 พื้นฐานไปจนถึงเครื่องมือความแม่นยำคลาส 1 ขั้นสูง
Pro Tips
- 💡Choose Class 1 for official or legal measurements
- 💡Ensure meter complies with latest IEC 61672-1:2013 standard
- 💡Consider outdoor microphone and weather protection for environmental monitoring
- 💡Check battery life - field measurements require extended operation
- 💡Verify data export formats match your reporting requirements
- 💡Budget for annual calibration and calibrator purchase
Technical Reference
Sound level meters are classified by IEC 61672-1 into Class 1 (±1.0 dB directional tolerance at 1 kHz) and Class 2 (±1.5 dB). Class 1 instruments are required for regulatory measurements, legal enforcement, and noise mapping. Class 2 instruments are acceptable for general surveys, occupational noise screening, and indoor comfort assessments. Beyond accuracy class, selection factors include: frequency analysis capability (broadband only vs octave-band vs 1/3-octave real-time), time weightings (F, S, I), measurement parameters (LAeq, LAmax, LAmin, Lpeak, percentiles L1–L99), internal storage capacity, battery life, and connectivity (USB, Bluetooth, Wi-Fi).
Class 1 vs Class 2: When Does It Matter?
Class 1 is required by: ISO 16283 (building acoustics field measurements), ISO 1996-2 (environmental noise assessments used in legal proceedings), IEC 61672-3 type testing, and most national noise regulations including Thai PCD standards for EIA monitoring. Class 2 is acceptable for: preliminary surveys, industrial noise screening under ISO 9612 (where full octave-band analysis is not required), indoor ambient noise assessment, and construction noise monitoring where Class 1 is not mandated.
Octave-Band Analysis Capability
For building acoustics (ISO 16283), room acoustics (ISO 3382), and environmental noise (ISO 1996), octave-band or 1/3-octave band real-time analysis is essential. Instruments like the Norsonic Nor150 include simultaneous broadband and 1/3-octave real-time analysis up to 20 kHz. Entry-level Class 2 meters typically offer broadband measurement only, with optional post-processed frequency analysis via external software.
Data Logging & Storage
For unattended measurements and long-term monitoring, sufficient internal storage to capture 1-second Leq time histories over the measurement period is essential. The Norsonic Nor150 stores 24 GB of data internally, supporting months of continuous measurement at 1-second integration.
Related Equipment
Recommended Products
BEDROCKELI-SB42
Bedrock Elite SB42 USB Acoustic Analyzer with FFT & Class 2 Precision
The Bedrock Elite SB42 is a professional-grade Class 2 USB-controlled acoustic analyzer designed for precise sound and frequency measurements. Part of the renowned Smart Series, this advanced device combines sound level measurement with comprehensive spectral analysis capabilities, including FFT, octave band, and 1/3 octave analysis. Its high-resolution real-time spectrum display and seamless USB connectivity enable effective PC-controlled acoustic assessments suitable for a wide range of industrial and research applications. Key features of the SB42 include a Class 2 sound level meter compliant with IEC 61672 standards, advanced FFT (Fast Fourier Transform) for detailed frequency spectrum analysis, and octave/1/3 octave band analysis for critical sound quality assessments. The USB interface supports easy integration with PC software for multi-parameter data logging, analysis, and reporting. Ideal for automotive NVH (Noise, Vibration, and Harshness) testing, aerospace component evaluation, manufacturing quality control, building acoustics, and environmental noise monitoring, the Bedrock Elite SB42 delivers reliable and repeatable results. It supports measurement standards such as IEC 61672, ISO 1996 for environmental noise monitoring, and ANSI S1.4 for sound level meter design and performance. Engineers, acoustic consultants, researchers, and quality assurance professionals will benefit from the SB42's robust design, high accuracy, and user-friendly interface. Whether conducting on-site noise assessments or lab-based spectral analysis, this device optimizes acoustic testing workflows and enhances data reliability. Request a quote today to upgrade your acoustic measurement capabilities with the Bedrock Elite SB42 and experience precision, versatility, and industrial-grade durability.
NOR1294
Norsonic NOR1294 Phase Verification Coupler – Precision Acoustic Calibrator
The Norsonic NOR1294 Phase Verification Coupler is a professional-grade acoustic calibrator designed for highly precise phase verification in sound and vibration measurement systems. Engineered for accuracy and reliability, this coupling device is essential for validating the phase response of acoustic instruments such as microphones, vibration sensors, and analyzers. Built to meet rigorous industry standards, the NOR1294 ensures consistent and repeatable results, making it the preferred choice of testing laboratories, environmental consultants, automotive NVH engineers, building acoustics professionals, and research institutions. Key Features & Technical Specifications: - Precision phase verification coupler for acoustic and vibration measurements - Compatible with a wide range of sound level meters, analyzers, and calibration equipment - Robust build quality to withstand industrial environments - Frequency response designed for reliable operation across standard measurement bands - Easy integration into calibration workflows for sound level, vibration, and frequency analysis Applications: The NOR1294 excels in various acoustic measurement fields including noise, vibration, and harshness (NVH) testing in automotive and aerospace industries, building acoustics evaluation, environmental noise monitoring, manufacturing quality control, and academic research. It supports compliance with international standards such as IEC 60942, ISO 9001, and ANSI specifications, ensuring your calibration results meet global benchmarks. Who Should Use the NOR1294? This coupler is ideal for engineers, metrologists, acoustic researchers, laboratory technicians, and environmental consultants who demand precise calibration tools for their acoustic measurement systems. Whether you are performing phase verification on microphones or calibrating vibration sensors, the NOR1294 delivers industrial-grade performance and accuracy. Invest in the Norsonic NOR1294 Phase Verification Coupler for your acoustic measurement toolkit and guarantee the integrity of your data through reliable phase calibration. Contact us today for a quote or additional product information and elevate the precision of your acoustic measurements.
BEDROCK-BEDROCKI5STIPAMETER
Bedrock Elite i5 STIPA Meter – Precision PA, PAGA & Voice Alarm Testing
The Bedrock Elite i5 is the next-generation STIPA meter engineered by the original inventors of STIPA and the Speech Transmission Index, setting a new standard for speech intelligibility measurement in professional acoustic testing. Designed specifically for high-accuracy PA system evaluation, PAGA (Public Address and General Alarm) system verification, voice evacuation alarms, emergency announcement systems, and public address installations, the Elite i5 delivers unparalleled precision, reliability, and compliance at a competitive price point. Key Benefits & Features: - Industry-Leading Accuracy: Developed by the creators of STIPA, the i5 ensures absolute alignment with IEC 60268-16 (4th edition, 2011) standards—offering the most exact speech intelligibility scores available. - Comprehensive Measurement Capabilities: Beyond STIPA, the Elite i5 provides detailed sound level measurement, frequency analysis, and advanced acoustic parameters essential for noise and vibration diagnostics. - Robust and User-Friendly Interface: Featuring intuitive controls and durable build for demanding field environments. - Versatile Applications: Ideal for commissioning, routine verification, and troubleshooting PA systems in critical environments such as airports, rail stations, commercial buildings, manufacturing plants, and government facilities. Technical Specifications: - Measures Speech Transmission Index (STI) compliant with IEC 60268-16 - Integrated sound level meter with IEC 61672 Class 1 accuracy - Frequency range suitable for audio and emergency voice signal assessment - Advanced signal processing algorithms developed by STIPA pioneers - Portable design optimized for onsite testing Applications: The Bedrock Elite i5 is indispensable for acoustic engineers, consultants, building acousticians, safety auditors, and researchers who require precise speech intelligibility data for noise vibration and harshness (NVH) studies, environmental noise monitoring, building acoustics verification, and quality control in manufacturing processes. Standards Compliance: Fully compliant with IEC 60268-16, IEC 61672-1 for sound level meters, and aligned with international ISO standards related to acoustic measurements, guaranteeing reliable and repeatable results. Target Audience: The device is tailored for professional users including acoustic consultants, system integrators, safety engineers, facility managers, and researchers in building and industrial acoustics. Request a Quote: Enhance your acoustic testing capabilities with the Bedrock Elite i5 STIPA meter. Contact us today for pricing and customization options tailored to your project requirements.
NOR1256
Norsonic Nor1256 Professional Sound Calibrator – Precision Acoustic Calibration Device
The Norsonic Nor1256 Sound Calibrator is a professional-grade, precision instrument engineered to provide accurate and reliable acoustic calibration for sound level meters and other audio measurement equipment. Designed to meet the rigorous demands of engineers, researchers, and consultants working in various industries, this calibrator ensures consistent calibration results that comply with international standards including IEC 60942 and ANSI S1.40. Key features of the Nor1256 include its stable and precise sound pressure level generation at 114 dB ±0.5 dB and frequencies of 250 Hz or 1000 Hz, making it ideal for sound level meter calibration used in noise and vibration testing, NVH (Noise, Vibration, and Harshness) analysis, building acoustics, and environmental noise monitoring. The device supports quick setup and straightforward operation critical for field testing and laboratory environments. The rugged and compact design of the Nor1256 facilitates onsite calibration for industries such as automotive, aerospace, manufacturing quality control, environmental consulting, and occupational health and safety. Its compatibility with a wide range of professional acoustic measurement instruments allows users to maintain the accuracy and reliability of their sound measuring equipment, improving measurement traceability and compliance. Applications of the Nor1256 include: - Calibration of sound level meters used in environmental noise assessments and industrial hygiene - Verification of measurement equipment in building acoustic studies and architectural acoustics - Support for NVH engineers in automotive and aerospace sectors for precise vibration and noise measurement - Quality control and maintenance of acoustic instrumentation in manufacturing and research laboratories Built to professional standards, the Nor1256 ensures full compliance with IEC 60942 Class 1 and ANSI requirements, guaranteeing reliable calibration for reliable noise measurement data. This sound calibrator is a must-have tool for professionals demanding the highest level of measurement accuracy. For engineers, laboratory technicians, environmental consultants, and researchers seeking superior acoustic calibration tools, the Nor1256 offers unmatched precision and durability. Contact us today to request a quote or learn how the Norsonic Nor1256 Sound Calibrator can enhance your acoustic measurement capabilities.
NOR1335A
Norsonic Nor1335A Softbag – Professional Acoustic Measurement Carrying Case
The Norsonic Nor1335A Softbag (SKU: NOR1335A) is a professional-grade carrying solution designed specifically for precision acoustic and vibration measurement instruments. Crafted by Norsonic, a trusted brand in the acoustic measurement field, this durable and lightweight softbag ensures secure transport and protection of your sensitive sound level meters, vibration analyzers, and frequency analysis equipment. Key Benefits: - Robust protection against physical impacts, dust, and moisture - Ergonomic design ensuring easy portability during on-site measurements - Custom compartments to securely house measurement devices and accessories Technical Features: The Nor1335A softbag is constructed using high-quality, impact-resistant fabric with reinforced stitching to withstand rigorous industrial environments. Its padded interior ensures optimal cushioning for sensitive instrumentation. The bag’s dimensions accommodate a broad range of professional-grade acoustic devices, making it versatile for various measurement setups. Applications: Engineers, acoustic consultants, researchers, and environmental monitoring specialists widely use the Nor1335A Softbag for safe transport of equipment involved in: - Noise and Vibration Harshness (NVH) testing in automotive and aerospace industries - Building and architectural acoustics assessments - Environmental noise pollution monitoring - Manufacturing quality control where precision sound and vibration analysis are critical Standards Compliance: The Nor1335A softbag is designed to support equipment that meets rigorous international standards such as IEC 61672 for sound level meters, ISO 3744/3746 for sound power measurement, and ANSI S1.4/1.11, ensuring your instruments remain reliable and accurate. Target Audience: This product is ideal for professional engineers, acoustic researchers, environmental consultants, and quality control managers who require dependable instrument protection on the move. Ensure your acoustic measurement instruments are well-protected with the Norsonic Nor1335A Softbag — a trusted companion for maintaining measurement accuracy and durability in demanding environments. Contact us today to request a quote or learn more about how the Nor1335A Softbag can enhance your acoustic and vibration measurement workflow.
BUILDING-ACOUSTICS
Soundtec BUILDING-ACOUSTICS Professional Building Acoustic & Vibration Analyzer
The Soundtec BUILDING-ACOUSTICS is a professional-grade acoustic and vibration measurement solution designed to deliver precise and reliable data for a wide range of industrial and environmental applications. Engineered for accuracy and compliance with international standards such as IEC 61672, ISO 1996, and ANSI S1.4, this advanced system offers comprehensive sound level, frequency analysis, and vibration measurement capabilities. Key Features & Technical Specifications: - High-precision sound level meter with broad frequency bandwidth - Vibration measurement with accelerometer integration - Real-time spectrum and frequency analysis - Robust data logging and reporting tools - Easy integration with acoustic software platforms - Durable hardware designed for field and laboratory use Applications & Use Cases: The BUILDING-ACOUSTICS system is ideal for professionals working in building acoustics, noise and vibration health (NVH) analysis, environmental noise monitoring, manufacturing quality control, and research and development. Whether assessing sound insulation in building materials, monitoring environmental noise pollution, or evaluating mechanical vibrations in industrial equipment, this solution ensures consistent, accurate, and reproducible measurements. Standards Compliance: Compliant with IEC 61672 Class 1 for sound level meters, ISO 1996 for environmental noise measurement, and ANSI S1.4, ensuring international acceptance and reliability in acoustic data. Target Audience: Engineers, acoustical consultants, environmental scientists, researchers, and industrial quality assurance professionals will benefit from the precision and versatility of the BUILDING-ACOUSTICS system. Invest in Soundtec BUILDING-ACOUSTICS today to achieve superior acoustic and vibration measurement performance. Contact us now to request a quote and enhance your professional measurement capabilities.
PMP41
PLACID PMP41 Professional Acoustic Measurement Microphone Set
The PLACID PMP41 Microphone Set is a high-precision professional acoustic measurement solution designed for demanding industrial and scientific applications. Manufactured by PLACID Instruments, a renowned brand in measurement technology, the PMP41 delivers exceptional accuracy and reliability for comprehensive sound and vibration analysis. This microphone set is engineered to capture detailed acoustic data including sound pressure levels, frequency spectra, and vibration characteristics. Featuring a wide dynamic range and low noise floor, the PMP41 enables precise measurements from quiet environmental sounds to intense industrial noise. Its robust industrial-grade design ensures durability and consistent performance under harsh field conditions. Key technical specifications include a frequency response from 10 Hz to 20 kHz, sensitivity suitable for sound level meters and analyzer input, and compliance with major international standards such as IEC 61672 Class 1 and ISO 1996 for environmental noise measurement. The PMP41 also meets ANSI standards for vibration and acoustic instrumentation, making it ideal for calibrated measurements. This microphone set is perfect for applications in various sectors including Noise, Vibration, and Harshness (NVH) analysis in automotive and aerospace industries, building and architectural acoustics assessments, environmental noise monitoring, and manufacturing quality control. Engineers, acoustic researchers, environmental consultants, and quality control professionals will benefit from its professional-grade performance and ease of integration with acoustic analysis systems. Whether performing complex frequency analysis, baseline noise surveys, or ongoing monitoring, the PMP41 provides trustworthy data that facilitates informed decision-making and regulatory compliance. Its compatibility with leading sound level meters and analyzers fosters seamless workflow integration. Request a quote today to upgrade your acoustic measurement capabilities with the PLACID PMP41 Microphone Set – precision, durability, and industry compliance in one powerful package.
NOR4553
Norsonic Nor4553 Adapter Cable for Precision Acoustic & Vibration Measurement
The Norsonic Nor4553 Adapter Cable (SKU: NOR4553) is a professional-grade accessory engineered to deliver precise performance in acoustic and vibration measurement systems. Designed and manufactured by Norsonic, a trusted brand in sound and vibration instrumentation, this adapter cable ensures reliable signal transmission critical for accurate sound level, vibration, and frequency analysis. Key Benefits: - High-fidelity signal integrity, minimizing noise and interference - Robust construction suitable for industrial environments - Compatible with a wide range of Norsonic measurement devices and third-party instruments - Facilitates precise diagnostics in machinery vibration, structural integrity assessments, and environmental noise monitoring Technical Features: - Shielded cable design for enhanced noise rejection - Durable connectors rated for repeated connect-disconnect cycles - Precision impedance matching to preserve measurement accuracy - Length options tailored for flexible setup in labs or fieldwork Applications: - Noise, Vibration, and Harshness (NVH) testing in automotive and aerospace industries - Building acoustics analysis, including sound insulation and reverberation studies - Environmental noise monitoring compliant with local and international regulations - Predictive maintenance and machinery diagnostics in manufacturing and process plants - Research and development in acoustics, structural engineering, and environmental science Standards Compliance: Built to meet international measurement standards including IEC 61672 for sound level meters and ISO 10816 for mechanical vibration. Ensures compatibility with ANSI standards commonly used in industrial and laboratory settings. Target Audience: Engineers, acoustic consultants, environmental scientists, researchers, and industrial maintenance professionals seeking a reliable, professional-grade connection solution to enhance measurement accuracy. Upgrade your measurement setup with the Norsonic Nor4553 Adapter Cable—engineered for consistency and precision in demanding acoustic and vibration applications. Contact us today to request a quote and optimize your sound and vibration measurement systems.
Need Personalized Advice?
Our team can help you configure the perfect system for your specific application and budget.
Contact Our Experts