The SV 977D is a Class 1 Sound and Vibration Level Meter designed for advanced acoustic and vibration measurements in building acoustics, occupational noise, and environmental monitoring. It is equipped with a ½” MK 255 microphone, delivering a wide frequency range from 3 Hz up to 20 kHz, and offers excellent long-term sensitivity stability. The meter provides an extended measurement range up to 40 kHz for ultrasound analysis, making it suitable for industrial and medical applications. The SV 977D offers a total dynamic range from 16 dBA RMS to 140 dBA Peak (from the instrument’s noise floor to the maximum measurable level), while the IEC 61672-1 linearity range—measured with a margin above the noise floor—spans from 23 dBA RMS to 140 dBA Peak. This ensures both wide measurement capability and full compliance with the standard.
The meter is fully type approved to IEC 61672-1 Class 1. A wide range of accessories and a typical price of €4,000–€6,000 make the SV 977D a comprehensive and versatile solution for sound and vibration consultants.
The SV 977D solves the most common challenges faced by measurement professionals in building acoustics, workplace safety, and environmental monitoring. The instrument eliminates the need for multiple devices by combining wide-range sound, ultrasound, and vibration measurement in a single unit.
Built-in A, B, C, Z, LF, U, and AU frequency weightings, along with Fast, Slow, and Impulse time constants, and IEC 61260-1-compliant 1/1- and 1/3-octave filters, enable this compact instrument to handle detailed acoustic analysis, low-noise background monitoring, and impulsive noise tasks. When connected to a vibration sensor, the SV 977D operates as a Class 1 vibration meter, compliant with ISO 20816-1.
Bluetooth® 5.2 enables wireless remote control and data review via mobile apps, including Building Acoustics PRO, which supports workflows for ISO 16283 building insulation measurements, RT60 reverberation, and STIPA speech intelligibility. The 32 GB MicroSD memory stores high-resolution time histories, WAV audio recordings, and project files for in-depth analysis. With a robust housing, the SV 977D operates reliably from –10 °C to +50 °C and up to 95% RH, and provides over 16 hours of operation using standard rechargeable AA batteries.
Unlock advanced analysis in every measurement.
Certified accuracy for every environment.
Wireless control for smart measurements.
Explore complete specifications, features, and accessories for the SV 977D. The catalogue covers measurement applications, standards, and software integration for building acoustics, environmental, and occupational noise projects.
Efficient measurement of acoustic insulation.
The SV 977D captures precise time history spectra for RT60 and sound insulation calculations, supporting accurate acoustic analysis in accordance with ISO 16283. The Bluetooth®-enabled mobile application streamlines project creation and documentation, ensuring all measurement data and results are saved directly in the instrument’s memory.
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Comprehensive workplace noise assessment.
The SV 977D enables precise measurement of workers’ noise exposure in compliance with ISO and OSHA standards, offering A- and C-weighted levels, audio recording, and 1/1 octave analysis for effective hearing protection selection. Advanced ultrasound capability supports monitoring in industrial and medical environments, while Supervisor software streamlines result evaluation and reporting.
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Outdoor monitoring with remote access.
The SV 977D transforms into a robust monitoring station for outdoor noise measurements, using an IP65-rated case and lightweight microphone protection. Integrated 4G connectivity and SvanNET service provide secure remote access and real-time status checks from any device, with optional meteorological data for comprehensive environmental assessment.
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Watch an overview of the SV 977D’s main hardware features and see how it supports advanced measurement tasks.
See how quickly the SV 977D adapts for vibration analysis with simple sensor connection and intuitive operation.
SV 977 – Class 1 Sound & Vibration Level Meter
Applications
Hardware Features
Sound measurements features
