Class 1 Sound Level Meter
SV 971A

The SV 971A Class 1 sound level meter is designed for use in measuring noise levels in occupational settings and for building acoustics measurements. It offers a linear measurement range of 27 to 140 dB in a single range, making it well-suited for a wide range of applications following British standards. The device is easy to use, thanks to dedicated mobile applications that support sound measurements as well as RT60 and STIPA. This makes it a versatile tool for professionals working in the field of acoustics or noise control.

Class 1 accuracy by BS EN 61672-1:2003

A Class 1 Sound Level Meter is a type of sound measuring instrument that meets the performance criteria outlined in the BS EN 61672-1:2003 standard. These criteria include the linear operating range, frequency response, and temperature operating range of the device. In the context of British standards, a Class 1 sound level meter is considered to be suitable for use in measuring noise levels and ensuring compliance with relevant regulations and guidelines.

Class 1 SLM

Mobile App

IEC 61672

Type 1 Sound Level Meter

Catalogues

Noise at work measurements

The SV 971A sound level meter is designed to make noise measurement easier and faster. It is equipped with all frequency weightings, which allows it to measure sound pressure levels as well as peak sound pressure levels in workplace environments.

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Building and room acoustics

The SV 971A sound level meter is designed to make building acoustics measurement easier and faster. The meter's Bluetooth interface allows it to be connected to mobile devices, which can make it easier to use and more convenient in a variety of settings for sound insulation measurements.

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UK's Best Noise Meter

Features

Class 1 Accuracy and Precision

Class 1 accuracy and precision by BS EN 61672-1:2003

Class 1 accuracy and precision, as specified in the BS EN 61672-1:2003 standard, is important because it ensures that sound level meters are able to provide reliable and accurate measurements. This is particularly important in professional settings, such as in building acoustics or occupational noise assessments, where the results of sound level measurements can have significant implications for the health and well-being of individuals. By meeting the performance criteria outlined in the BS EN 61672-1:2003 standard, Class 1 sound level meters can provide users with confidence in the accuracy and reliability of their measurement results.

Noise sources identification

Octave filters and audio recording

Octave filters and audio recording are two powerful features when performing sound analysis. Octave filters allow users to measure sound levels within specific frequency ranges and are used both in occupational measurements and building acoustics. Audio recording, on the other hand, allows users to capture and save recordings of sounds for later analysis or playback. This can be useful for documenting noise levels in a given environment and for conducting more detailed analyses of sound levels over time.

Connect to the mobile app

Make it easier to use the sound level meter

Sound level meters are complex and specialized devices, and the ability to connect to a mobile app can make a sound level meter easier to use and more accessible. A Sound Level Meter App is a type of mobile application that connects to a sound level meter and provides an extension to the meter's user interface. The app can help users calculate sound insulation levels according to BS EN ISO 16283 and present results on the display and in the form of a report that is compliant with ISO requirements.

Compatibility with international standards

noise measurements following ISO, IEC, OSHA, MSHA, or ACGIH guidelines

To provide accurate and reliable sound pressure measurements, it is important to follow established measurement standards. In the context of workplace noise measurements, this typically means following the guidelines set forth by organizations such as the International Organization for Standardization (ISO), the Occupational Safety and Health Administration (OSHA), the Mine Safety and Health Administration (MSHA), or the American Conference of Governmental Industrial Hygienists (ACGIH). Similarly, sound insulation measurements must follow the guidelines established by ISO 16283, which provide detailed instructions for conducting these types of assessments. And for speech transmission indexes in public address systems, it is important to follow the guidelines set forth by the International Electrotechnical Commission (IEC) in its 60268 standard.

Class 1 Accuracy and Precision

Class 1 accuracy and precision by BS EN 61672-1:2003

Noise sources identification

Octave filters and audio recording

Connect to the mobile app

Make it easier to use the sound level meter

Compatibility with international standards

noise measurements following ISO, IEC, OSHA, MSHA, or ACGIH guidelines

Sound measurements

Applications in the UK

Noise at work

HSE guidelines

In the UK, occupational noise measurements are typically conducted according to the guidelines set forth by the Health and Safety Executive (HSE), which is the UK's national regulator for occupational health and safety. The HSE provides detailed guidance on how to conduct noise assessments in the workplace, including information on how to use sound level meters and other measurement tools, how to interpret measurement results, and what steps to take to protect workers from excessive levels of noise. Additionally, the HSE recommends that occupational noise measurements be conducted according to the standards established by the International Organization for Standardization (ISO), such as ISO 9612 and ISO 1999.

Building Acoustics

Sound insulation by BS EN ISO 16283

In the UK, sound insulation measurements are typically conducted according to the guidelines set forth by the British Standards Institution (BSI), which is the UK's national standards organization. The BSI provides detailed guidance on how to conduct sound insulation measurements, including information on how to use sound level meters and other measurement tools, how to interpret measurement results, and what steps to take to improve the sound insulation of buildings and other structures. Additionally, the BSI recommends that sound insulation measurements be conducted according to the standards established by the International Organization for Standardization (ISO), such as ISO 16283.

STIPA Voice Level Meter

Speech transmission indexes for public address systems

The BSI recommends that STIPA measurements be conducted according to the standards established by the International Electrotechnical Commission (IEC) in its 60268 standard. This standard provides detailed instructions for conducting STIPA measurements and for interpreting the results. In organizing STIPA measurements and calculations, a dedicated mobile application can be used to support the use of a STIPA Voice Level Meter. This can make it easier to conduct the measurements and to interpret the results. The STIPA signal is typically reproduced by the loudspeakers in the public address system under study, but in some cases, dedicated loudspeakers may be used.

Noise at work

HSE guidelines

Building Acoustics

Sound insulation by BS EN ISO 16283

STIPA Voice Level Meter

Speech transmission indexes for public address systems

Noise Level Meter

Videos

Introducing the 971A Class 1 Sound Level Meter

The 971A Class 1 Sound Level Meter uses a microphone that offers a linear measurement range of 27 to 140 dB, making it well-suited for a wide range of applications.

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Class 1 sound level meter sv 971a

The kit consists of an SV 971A Class 1 sound level meter with a detachable preamplifier (SV 18A), a high-quality, omni-directional ACO SV 7152 microphone that is compliant with the IEC 61094-4 standard. The list of accessories includes an SA 22 windscreen, a 32 GB microSD card, four AAA batteries, a USB cable, and a pendrive with the user manual. Each SV 971A comes with a factory calibration certificate and a 36-month warranty card.

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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...

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Svantek 971A

Specification

Class 1 sound level meter sv 971a

Applications

Sound measurements
Environmental noise
Occupational noise
Building acoustics

Hardware Features

Number of channels	1
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	Pending
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	3
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

Sound Level Meter PDF and Software

Downloads

Information Materials
Firmware & Software

Type Approvals

Data Sheet

Declaration of Conformity

User Manual

Firmware

Bootstrap

Class 1 Sound Level Meter SV 971A

Class 1 accuracy by BS EN 61672-1:2003

Type 1 Sound Level Meter

Noise at work measurements

Building and room acoustics

UK's Best Noise Meter

Class 1 Accuracy and Precision

Noise sources identification

Connect to the mobile app

Compatibility with international standards

Sound measurements

Noise at work

Building Acoustics

STIPA Voice Level Meter

Noise Level Meter

Introducing the 971A Class 1 Sound Level Meter

Ask for demonstration

Svantek 971A

Sound Level Meter PDF and Software

Class 1 Sound Level Meter
SV 971A