SVAN 971 Sound Level Meter

SVAN 971 Class 1 Sound Level Meter is an extremely small instrument with options for 1/1 & 1/3 octave analysis. The instrument brings unprecedented state of the art technology to a SLM of this size.The user interface makes both configuration and measurement easier than ever before. For those who don’t have time to work with measurement settings, SVAN 971 offers extremely simple operational mode with Start/Stop. This innovation makes the SVAN 971 an ideal choice for many applications including industrial hygiene noise, short term environmental noise, acoustic consultants, technical engineers and general noise measurements. Another exceptional feature is built-in self-vibration monitoring providing information about level of vibration that influences the measurement results.

The SVAN 971 provides broadband results with all required weighting filters plus 1/1 octave & 1/3 octave band filters. It also offers an incredible time history logging (capability providing broad band results and spectra with adjustable double (long and short) logging steps). Triggered audio recording is also available whilst logging complete functionality.

The instrument can be easily calibrated in the field using an acoustic calibrator. Insertion of the microphone into a calibrator automatically activates the calibration process and the calibration history is automatically logged. Data is stored on a μSD card and can be easily downloaded to a PC using the provided SvanPC++ software over either USB or RS 232 interfaces. New PC software Supervisor will help SVAN 971 owners to organize data from number of measurements and create measurement reports in a quicker and more efficient way than ever before.




  • Revolutionary pocket size & light weight ca 225 grams
  • Noise measurements meeting Class 1 IEC 61672-1
  • Wide measurement range
  • 1/1, 1/3 octave real-time analysis (option)
  • Dosimeter function (option)
  • Audio events recording (option)
  • Statistical analysis
  • Time-history with two logging steps
  • Automated calibration start
  • Free-field & diffuse-field measurements
  • Setup editor available with PC software
  • Predefined setups and reports with Supervisor+ software
  • High contrast color OLED display
  • Built-in self vibration monitoring
  • Micro SD card for mass data memory
  • Extremely simple operational mode with Start/Stop
  • Easy in use with predefined setups
  • Three parallel independent profiles


Standards Class 1: IEC 61672-1:2013
Weighting Filters A, B, C, Z
Time constants Slow, Fast, Impulse
RMS Detector Digital True RMS detector with Peak detection, resolution 0.1 dB
Microphone ACO 7052E, 35 mV/Pa, prepolarised 1/2” condenser microphone
Calibration Automatic calibration @ 114dB/1kHz
Preamplifier SV 18 detachable
Linear Operating Range 25 dBA RMS ÷ 140 dBA Peak (in accordance to IEC 61672)
Total Dynamic Measurement Range 15 dBA RMS ÷ 140 dBA Peak (typical from noise floor to the maximum level)
Internal Noise Level less than 15 dBA RMS
Dynamic Range >110 dB
Frequency Range 10 Hz ÷ 20 kHz
Meter Mode Results SPL, Leq, SEL, Lden, Ltm3, Ltm5, LMax, LMin, LPeak, “running Leq” up to 60 minutes
Simultaneous measurement in three profiles with independent set of filters and detectors
Statistics Ln (L1-L99), complete histogram in meter mode
Data Logger Time-history logging of summary results, spectra with adjustable double logging steps down to 100 ms
Audio Recording (option) Audio events recording, trigger and continuous mode, 12 kHz sampling rate, wav format
Voice Comments Audio records on demand, created before or after measurement, added to measurement file

Noise Dosemeter

Dosimeter Mode Results (option) SPL, Leq, SEL, LPeak, Dose, D-8h, Lav, SEL8, PSEL, E, E-8h, TWA, ’Peak Counter’ and more
Exchange Rate 2, 3, 4, 5, 6

Sound Analyser

1/1 Octave Analysis (option) Real-time analysis meeting Type 1 requirements of IEC 61260, center frequencies from 31.5 Hz to 16 kHz available simultaneously with three profiles for broadband measurements (SLM), time-history logging and audio recording
1/3 Octave Analysis (option) Real-time analysis meeting Type 1 requirements of IEC 61260, center frequencies from 20 Hz to 20 kHz available simultaneously with three profiles for broadband measurements (SLM), time-history logging and audio recording

General information

Input Preamplifier (60 UNS thread)
Memory MicroSD card 16 GB (removable & upgradeable)
Display Colour 96 x 96 pixels OLED type
Keyboard 8 push buttons
Communication Interfaces USB 2.0 client
SV 75 RS 232 cable (optional) or SV 76 RS 232 cable with external power supply connector (option)
Power supply Four AAA alkaline or rechargeable NiMH batteries (not included)
USB interface 100 mA HUB
Environmental Conditions Temperature from -10 oC to 50 oC
Humidity up to 95% RH, non-condensed
Physical Characteristics Dimensions: 232,5 mm x 56 x 20 mm (including microphone and preamplifier)
Weight: Approx. 225 grams with batteries


*Continuous product development and innovation are the policy of our company. Therefore, we reserve the right to change the specifications without prior notice.


Main Applications:

  • Sound measurements
  • Environmental noise
  • Occupational noise