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Class 1 Sound Level Meter SV 971A

A compact and highly accurate sound level meter for building acoustics, occupational noise, and STIPA measurements. The SV 971A is the smallest Class 1 sound level meter on the market, offering a wide linear range from 27 to 140 dB in a single span. Fully compliant with BS and ISO standards, it supports RT60 and sound insulation tests via a dedicated mobile app, making it the ideal tool for acoustic consultants and H&S professionals.

The Best Sound Level Meter

The SV 971A is widely regarded as one of the best Class 1 sound level meters for professionals in the UK. It fully meets the performance criteria defined in BS EN 61672-1, including linear range, frequency response, and environmental durability. Trusted for its accuracy and compliance, the SV 971A is ideal for any application where noise measurements must meet regulatory and acoustic engineering standards.

Features

Certified Class 1 Precision

Meets BS EN 61672-1:2013 for trusted measurement accuracy

The SV 971A is fully compliant with Class 1 sound level meter standards, ensuring accurate and repeatable results. It’s trusted by professionals for both building acoustics and occupational noise assessments where precision is critical.

Noise Source Identification

Real-time octave analysis with optional audio recording

The SV 971A supports 1/1 and 1/3 octave filters to analyse sound energy by frequency band. Optional WAV recording enables users to capture sound events for playback, source detection, and post-processing.

Mobile App Integration

Wireless control and reporting for BS EN ISO 16283 insulation tests

The SV 971A connects via Bluetooth® to the Building Acoustics PRO app, enabling guided workflows for airborne, impact, and facade insulation tests. The app automates reporting in line with BS EN ISO 16283, ensuring accuracy and compliance on site.

Global Standards Compatibility

Conforms to BS EN, ISO, IEC, OSHA and other international guidelines

The SV 971A supports noise and insulation measurements in accordance with BS EN ISO 16283, IEC 60268, OSHA, MSHA, and ACGIH standards. This makes it a trusted tool for acoustic consultants and H&S professionals operating across the UK and internationally.

Certified Class 1 Precision

Meets BS EN 61672-1:2013 for trusted measurement accuracy

Noise Source Identification

Real-time octave analysis with optional audio recording

Mobile App Integration

Wireless control and reporting for BS EN ISO 16283 insulation tests

Global Standards Compatibility

Conforms to BS EN, ISO, IEC, OSHA and other international guidelines

Applications

Occupational Noise

HSE-compliant noise measurements in the workplace

The SV 971A supports UK HSE guidelines and ISO 9612/1999 standards for workplace noise assessments. It’s ideal for measuring exposure, interpreting results, and helping safety professionals protect workers from excessive noise.

Building Acoustics

BS EN ISO 16283 sound insulation testing made simple

The SV 971A is fully compatible with BS EN ISO 16283 for airborne, impact, and facade sound insulation measurements. With guided workflows and report generation via mobile app, it’s the ideal choice for acoustic consultants and building engineers in the UK.

STIPA Voice Intelligibility

IEC 60268-compliant testing for PA and voice alarm systems

The SV 971A supports STIPA speech transmission index measurements as per IEC 60268, making it ideal for testing public address and voice alarm systems. The dedicated mobile app helps configure tests, interpret results, and generate compliant reports.

Occupational Noise

HSE-compliant noise measurements in the workplace

Building Acoustics

BS EN ISO 16283 sound insulation testing made simple

STIPA Voice Intelligibility

IEC 60268-compliant testing for PA and voice alarm systems

Class 1 Sound Level Meter

The SV 971A is a Class 1 Sound Level Meter and Sound Exposure Meter designed for professional use, recognized for its compact size, lightweight, and inclusion of advanced features.

Sound Level Meter for Building Acoustics

Discover how this advanced device streamlines sound insulation measurements, ensuring precision and compliance with international standards.

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Class 1 Sound Level Meter SV 971a

The kit includes the SV 971A Class 1 sound level meter • SV 18A detachable preamplifier • ACO SV 7152 omni-directional microphone (IEC 61094-4 compliant) • SA 22 windscreen • 32 GB microSD card • four AAA batteries • USB cable • USB drive with user manual • factory calibration certificate • 36-month warranty card upon registration.

SVANPC++_BA - Building Acoustic Module License

The optional PC software module provides a very powerful extension to the mobile application with the advanced calculations of reverberation time and sound insulation.

SVANPC++EM - Environmental Module License

The PC software module is designed for data post-processing from noise and vibration measurements. It provides all necessary functionalities for marking / removing / recalculation...

SF 971A_P2 - options package to SV 971A: RT60 and STIPA

Firmware options package to SV 971A: RT60 reverberation time and STIPA. Both functions are supported by a mobile application for measurement of sound insulation in accordance...

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Specifications

Class 1 Sound Level Meter SV 971a

Applications

Sound measurements

Environmental noise

Occupational noise

Building acoustics

Hardware Features

Number of channels

Self-vibration detection

Auto-calibration

Bluetooth

Communication Interfaces

USB, Bluetooth

Display

Keyboard

8 keys

Memory

uSD card 32 GB

Battery type

4 x AAA

Operating time

16-24 hours

Operating temperature range

-10 °C to 50 °C (14 °F to 122 °F)

Humidity range

up to 95 % RH, non-condensed

Weight

225 grams

Size

232.5 x 56 x 20 mm

Sound measurements features

Standards

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

Type approvals

Type approval in Poland, Austria and China

Microphone type

ACO 7152

Preamplifier type

SV 18A

Linear operating range to IEC 61672

24 dBA Leq ÷ 140 dBA Peak

Total measurement range

17 dBA Leq ÷ 140 dBA Peak

Internal noise

< 17 dBA Leq

Frequency range

5 Hz ÷ 20 kHz

Weighting filters

Frequency weighting: A, B, C, Z, LF

Time constants

Time Weighting: Slow, Fast, Impulse

Exchange rates

2, 3, 4, 5, 6

Criterion levels

adjustable

Profiles per channel

Min logging step

100 ms / 2 ms in RT60

Statistics

Ln (L1-L99)

Statistics in octaves or third octaves

Audio recording

option

Voice coments

1/1 octave

option

1/3 octave

option

RT60

option

STIPA

option

Class 1 Sound Level Meter SV 971A

The Best Sound Level Meter

Features

Certified Class 1 Precision

Noise Source Identification

Mobile App Integration

Global Standards Compatibility

Applications

Occupational Noise

Building Acoustics

STIPA Voice Intelligibility

Videos

Class 1 Sound Level Meter

Sound Level Meter for Building Acoustics

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Specifications

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