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Class 1 Sound and Vibration Level Meter SV 977D

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.

Class 1

Bestseller

Bluetooth

Highlights

All-in-one acoustic and vibration measurement: Combines wide-range sound, ultrasound, and vibration monitoring in a single Class 1 instrument.
Advanced acoustic analysis: Supports A, B, C, Z, LF, U, and AU frequency weightings, Fast/Slow/Impulse time constants, and 1/1- and 1/3-octave filters (IEC 61260-1 compliant).
Dual-function sound and vibration meter: Operates as a Class 1 vibration meter when connected to a sensor, compliant with ISO 20816-1.
Wireless control and mobile app support: Equipped with Bluetooth® 5.2 for remote control and data access via apps, including Building Acoustics PRO (supports ISO 16283, RT60, and STIPA workflows).
High-capacity data storage: Includes a 32 GB MicroSD card for storing time history data, WAV audio recordings, and project files for in-depth post-analysis.
Rugged and field-ready design: Operates reliably in temperatures from –10 °C to +50 °C and up to 95% relative humidity, with over 16 hours of battery life using standard rechargeable AA batteries.

Key Features

Advanced Frequency Analysis

Unlock advanced analysis in every measurement.

The SV 977D provides real-time 1/1 and 1/3 octave frequency analysis, supporting both sound and ultrasound measurements up to 40 kHz. Time-domain recording to WAV format enables precise post-processing and advanced acoustic diagnostics in SvanPC++ software.

Class 1 Compliance

Certified accuracy for every environment.

The SV 977D meets IEC 61672-1:2013 Class 1 standards, delivering precise sound measurements with a high-quality, omni-directional microphone and detachable preamplifier. The instrument operates reliably from 23 dBA across a wide temperature range, ensuring full compliance and stability in demanding conditions.

Remote Communication

Wireless control for smart measurements.

The SV 977D features built-in Bluetooth® for seamless integration with mobile applications, allowing users to preview results, display spectrum analysis, and generate ISO-compliant reports directly on their smartphones. This wireless connectivity streamlines fieldwork and enhances measurement flexibility for building acoustics and environmental projects.

977D sound and vibration meter wireles communication

Advanced Frequency Analysis

Unlock advanced analysis in every measurement.

Class 1 Compliance

Certified accuracy for every environment.

Remote Communication

Wireless control for smart measurements.

Download the SV 977D Catalogue for all essential product details

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.

Download Catalogue (PDF)

Applications

Building Acoustics

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.

Occupational Noise

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.

Environmental noise

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.

Building Acoustics

Efficient measurement of acoustic insulation.

Occupational Noise

Comprehensive workplace noise assessment.

Environmental noise

Outdoor monitoring with remote access.

Discover SV 977D in action.

Watch an overview of the SV 977D’s main hardware features and see how it supports advanced measurement tasks.

Vibration Level Meter

See how quickly the SV 977D adapts for vibration analysis with simple sensor connection and intuitive operation.

Building Acoustics Meter

Discover the mobile application for building acoustics measurements with SV 977

Check Availability & Price

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Specifications

SV 977 – Class 1 Sound & Vibration Level Meter

Applications

Sound measurements

Occupational noise

Building acoustics

Machine vibration

Hardware Features

Number of channels

Auto-calibration

Remote communication

Bluetooth

GPS module

Communication Interfaces

USB-C, I/O, RS232, Bluetooth 5.2

Display

Keyboard

9 keys

Memory

uSD 32 GB

Battery type

Operating time

12-16 hours

Operating temperature range

-10 °C to 50 °C

Humidity range

up to 90 % RH, non-condensed

Weight

600 grams

Size

343 x 79 x 39 mm

Sound measurements features

Standards

Class 1: IEC 61672-1:2013, Class 1: IEC 61260-1:2014

Type approvals

Pattern approvals to IEC 61672 and WELMEC requirements

Microphone type

Microtech Gefell MK 255

Preamplifier type

SV 12L

Linear operating range to IEC 61672

23 dBA Leq÷140 dBA Peak

Total measurement range

16 dBA Leq÷140 dBA Peak

Internal noise

<16 dB LAeq

Frequency range

3 Hz ÷ 20 kHz

Weighting filters

A, B, C, Z, LF, U, AU

Time constants

Slow, Fast, Impulse

Profiles per channel

Min logging step

2 ms

Statistics

Ln (L1-L99)

Statistics in octaves or third octaves

Audio recording

option

1/1 octave

1/3 octave

FFT

option

RT60

option

STIPA

option

RPM

option

Vibration measurement features

Standards

ISO 20816

Number of channels

Sensor type

IEPE

1/1 octave

1/3 octave

WAV recording

option

FFT

option

RPM

option

Class 1 Sound and Vibration Level Meter SV 977D

Highlights

Key Features

Advanced Frequency Analysis

Class 1 Compliance

Remote Communication

Catalogue

Download the SV 977D Catalogue for all essential product details

Applications

Building Acoustics

Occupational Noise

Environmental noise

Videos

Discover SV 977D in action.

Vibration Level Meter

Building Acoustics Meter

Check Availability & Price

Specifications

Downloads