Class 1 Sound Level Meter SV 971A Product Page

Sound Level Meters > SV 971A

SV 971A Class 1 Sound Level Meter

5.0 (20 Reviews)

The SV 971A represents the latest advancement in Svantek’s renowned 971 series of Class 1 sound level meters, a benchmark range trusted by professionals worldwide. Compact, lightweight, and easy to operate, the 971A redefines portability without compromising on precision. Equipped with a newly designed microphone offering a 120 dB dynamic range and a low-power Bluetooth® interface, it provides seamless connectivity for mobile applications. Designed for professionals in occupational, environmental, and building acoustics, the SV 971A combines versatility with top-tier measurement accuracy.

Inquire Now

The SV 971A is a high-precision Class 1 sound level meter developed for advanced acoustic, environmental, and occupational noise measurements. Designed to meet stringent international standards, it delivers reliable results for compliance and detailed acoustic analysis.

Featuring wide dynamic range, octave band analysis, and optional RT60 and STIPA functions, the SV 971A is ideal for applications where measurement accuracy, repeatability, and regulatory confidence are essential.

Sound measurements features
Sound measurements	✔️
Environmental noise	✔️
Occupational noise	✔️
Building acoustics	✔️
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 × AAA
Operating time	16–24 hours
Operating temperature range	-10 °C to 50 °C
Humidity range	up to 95 % RH
Weight	225 grams
Size	232.5 × 56 × 20 mm
Standards	Class 1: IEC 61672-1:2013 Class 1: IEC 61260-1:2014
Type approvals	Pattern approval to IEC 61672
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	A, B, C, Z, LF
Time constants	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)
Audio recording	Option
Voice comments	✔️
1/1 octave	Option
1/3 octave	Option
RT60	Option
STIPA	Option

Other Features & Highlights

IEC 61672-1:2013 – Complies with Class 1 standards for Sound Level Meters
IEC 61260-1:2014 – Complies for Octave and 1/3 Octave Band Filters
ISO 9612 – Complies for Occupational Noise Exposure Measurement
OSHA 1910.95 – Supports Noise Regulation (USA)
MSHA and ACGIH – Meets guidelines for industrial and mining noise exposure
EU Noise Directive – Fulfills compliance for workplace safety
ISO 1999 – Follows standards for calculating daily exposure levels (LEX, 8h)
Type-Approved Class 1 – Certified instrument for professional-grade noise monitoring
Bluetooth® 5.2 Low-Energy – Features connectivity for wireless communication
USB 2.0 Interface – Includes interface for data transfer and logging
Calibration Verification – Meets standards to be performed before and after measurements
Real-time Analysis – Supports 1/1 and 1/3 octave frequency analysis
STIPA and RT60 – Compatible with reverberation time measurements
Software Integration – Fully integrates with Svantek Supervisor and Assistant software

Downloads

Data Sheet
PDF, HS Application

User Manual
PDF, English v1.03

Applications

Occupational Noise Measurements

Reliable workplace noise monitoring in compliance with global safety standards.

The SV 971A enables precise occupational noise assessment in compliance with ISO 9612, OSHA, MSHA, ACGIH, and the EU Noise Directive. Its wide dynamic range ensures accurate measurement across all noise levels from low ambient exposure to high-intensity industrial environments.

Inteccon - Features

Key Features

The SV 971A is a Class 1 sound level meter designed for high-precision noise and acoustic measurements. It combines advanced frequency analysis, automated calibration, and professional software for critical applications.

Advanced Octave Band Analysis & Recording

Supports 1/1 and 1/3 octave analysis with data logging and WAV recording for detailed acoustic studies and noise control.

Mobile App Integration

Wireless operation via mobile app enables remote control, measurement setup, and reporting for ISO 16283 and STIPA testing.

Professional Software & Data Management

Advanced firmware with SD card storage and PC software supports time-history analysis, visualization, and reporting.

Automatic Calibration with Traceability

Auto-calibration detects the calibrator, logs date, time, and level, and ensures accurate, traceable measurements.

Certified Accuracy for Noise Assessment

Compliant with IEC, ISO, OSHA, MSHA, and ACGIH standards for occupational, building, and speech measurements.

Class 1 Precision Sound Level Meter

IEC 61672 Class 1 certified with True RMS detection and 0.1 dB resolution for high-accuracy acoustic analysis.

FAQ Component

Frequently asked questions

What is a sound level meter?

A sound level meter (SLM) is a hand-held instrument that measures sound pressure levels (SPL) in decibels, responding to sound much like the human ear.

What is a sound level meter used for?

It’s used to measure and manage noise from factories, construction sites, vehicles, concerts, and workplaces to ensure safety and environmental compliance.

What are Class 1 and Class 2 sound level meters?

Class 1 meters are more precise and suited for laboratory and environmental monitoring, while Class 2 meters are used for general-purpose or workplace noise assessments.

How does a sound level meter work?

It uses a microphone to convert sound into an electrical signal, processes it with filters and time settings, and displays the measured sound level in decibels (dB).

What is Leq (Equivalent Continuous Sound Level)?

Leq represents the average sound energy over a period, giving a single value that reflects fluctuating noise levels.

How often should I calibrate a sound level meter?

You should check calibration before and after each measurement session and send it to a certified lab every 12–24 months for verification.

How do I perform a field calibration?

Place the calibrator snugly over the microphone, switch it on (usually 94 dB or 114 dB at 1 kHz), and adjust or verify the reading on the meter.

What standards apply to sound level meters?

SLMs are tested and certified under IEC 61672 standards for accuracy and functionality, with Class 1 and Class 2 performance levels.

What is the measurement range of the SV 971A?

The SV 971A measures from 27 dB to 140 dB in a single range, capturing parameters such as Leq, Peak, Max, and Min with A, C, and Z frequency weightings.

How is data stored and transferred?

All measurement results and time histories are saved on a 32 GB microSD card and can be easily transferred to a PC via the USB interface.

Does the SV 971A support wireless connectivity?

Yes, it features Bluetooth® connectivity, allowing users to remotely start or stop measurements and view data in real time using mobile applications.

We'd Love to Hear From You

Please fill out the form below to get in touch.

First Name*

Last Name*

Job Title*

Company*

Company Email*

Mobile No*

Country*

City*

Additional Information*

Serving customers in Florida, Maryland, Delaware, New Jersey, New York, Connecticut, Rhode Island, Massachusetts, Vermont, New Hampshire & Maine. Local technical support for SVANTEK instruments.