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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
Class 1 SLM
mobile app sound level meter
Mobile App
type approval iec 61672
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.
class 1 sound level meter pdf

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.
building acoustic meter pdf

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.
SV971A Sound Level Meter

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.
SV971A Sound Level Meter

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.    
SV971A Sound Level Meter

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.
SV971A Sound Level Meter

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.
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SV971A Sound Level Meter

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.
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SV971A Sound Level Meter

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.
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SV971A Sound Level Meter

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

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

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 with ISO 16283 and STIPA with IEC 60268.

SUPERVISOR - PC Software

SUPERVISOR - PC Software

PC Software dedicated for health and safety measurements instrumentation

SVANPC++EM - Environmental Module License

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 of the time-history records and presentation the calculated results in a form of reports (text, table and graphic forms).









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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

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