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Sound & Vibration Analyzer

Four Channel Sound & Vibration Analyzer

Model No : SVAN 958

The SVAN 958A is an unique four-channel instrument offering 20kHz-band sound & vibration analysis. It is a perfect choice for all applications that require simultaneous class 1 noise measurements & tri-axial vibration assessment.

Each of four input channels can be independently configured for sound or vibration detection with different filters and RMS detector time constants giving users an enormous measurement flexibility. The real advantage of SVAN 958A is the capability to perform advanced analysis simultaneously to the level meter mode.

In practise this allows to obtain broad-band results such as Leq, RMS, LMax, LMin, LPeak together with four-channel analysis like FFT or octave band analysis. List of available analyser functions includes FFT, 1/1 or 1/3 octave, cross spectra, sound intensity, RT 60 and more. The 4-channel time-domain signal recording to .wav format is available as well as an exceptional feature!

All measurement results are stored in non-volatile 32 MB internal memory or USB memory stick and can be easily downloaded to a PC with SvanPC++ software. SVAN 958A with RS 232 interface (SV 55) can be offered with GPRS modem or LAN & WLAN connection module. Together with SvanPC++_RC remote communication software, these interfaces provide easy remote access to instrument settings & data over Internet and local area network. Instrument is powered from four AA standard or rechargeable batteries as well as from the external DC power source or USB interface. Robust case and light weight design accomplish the exceptional features of this new generation instrument.


  • Four channels, 20 kHz real time, simultaneous sound and vibration measurements
  • FFT real time analysis up to 1600 lines in 20.0 kHz band
  • 1/1 and 1/3 octave real time analysis
  • Human Vibration measurements meeting ISO 8041:2005
  • Including VDV and MTVV
  • Noise measurements Class 1, IEC 61672:2002
  • Acoustic dose meter function
  • Sound Intensity measurements
  • Reverberation Time measurements RT 60
  • FFT cross spectra's
  • Advanced Data Logger with 32 MB non-volatile internal memory
  • USB Memory Stick provides almost unlimited logging capability
  • Time domain signal recording
  • Advanced trigger and alarm functions
  • USB 1.1 Client and USB Host, optional RS 232 and IrDA interfaces
  • Integration time programmable up to 24 h
  • Powered by 4 x AA standard or rechargeable batteries
  • Easy in use, hand held, light weight and robust case

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Type 1 Sound & Vibration Analyzer

Model No : SVAN 977

Sound & Vibration Analyzer is the next generation of Type 1 sound & vibration instruments and is designed to meet the needs of both environmental monitoring and occupational health and safety monitoring specialists. Its exceptional hardware design also enables the measurement of ultra sound frequencies in the 40 kHz band.

It provides broadband results with all the standard weighting filters and also offers an incredible time history logging capability providing broadband results and spectra with adjustable double (long and short) logging steps.

The highly developed user interface works on networks like GPRS, Ethernet, WLAN or ZigBeeTM for both remote data download and settings configuration. The built-in BluetoothTM interface together with smart-phone application, SvanMobile, extends measurement capabilities with all the features offered by smart-phones including text/voice comments, photo, video, GPS position etc.


  • Type 1 IEC 61672:2002 sound level measurements
  • Dedicated for:
    • General acoustic measurements
    • Environmental noise monitoring
    • Occupational health and safety noise monitoring
    • Ultra sound measurements in 40 kHz band
    • General vibration measurements (acceleration, velocity and displacement)
    • Hand-arm vibration measurements
  • Three parallel independent profiles
  • 1/1 or 1/3 octave real-time analysis
  • FFT real-time analysis
  • Time-domain signal recording & audio events recording
  • Reverberation time measurements
  • Advanced Data Logger including spectral analysis
  • MicroSD card providing almost unlimited logging capacity
  • BluetoothTM interface
  • Remote communication (GPRS, Ethernet, WLAN, ZigBeeTM)
  • All weather microphone protection kit designed for community and airport noise monitoring
  • OLED color display with super brightness and contrast
  • Hand held, light weight and robust case
  • TNC input connector
  • Easy in use

Technical Specifications - Sound Level Meter / Analyser

Standards Type 1: IEC 61672-1:2002
Meter mode SPL, Leq, SEL, Lden, Ltm3, Ltm5, Statistics - Ln (L1-L99), LMax, LMin, LPeak Simultaneous measurement in three profiles with independent set of filters and detectors
Analyzer 1/1 or optional 1/3 octave1 real-time analysis meeting Type 1 requirements of IEC 61260. FFT 1 real-time analysis 1600 lines, up to 20.0 kHz band (option)Reverberation time analysis in 1/3 octave bands (RT 60 option)
Weighting filters A, B, C , Z
RMS Detector Digital True RMS detector with Peak detection, resolution 0.1 dB,Time Constants: Slow, Fast, Impulse
Microphone ACO 7052E, nominal sensitivity 35 mV/Pa, prepolarised 1/2” condenser microphone
Total dynamic measurement range 15 dBA RMS - 140 dBA Peak (typical from noise floor to the maximum level)
Linear operating range 25 dBA RMS - 140 dBA Peak (in accordance to IEC 61672)
Internal Noise Level less than 15 dBA RMS
Frequency Range 10 Hz ÷ 40 kHz (transducer dependent)

Technical Specifications - Vibration Level Meter / Analyser

Standards ISO 10816-1
Meter mode RMS, MAX, Peak, Peak-PeakSimultaneous measurement in three profiles with independent set of filters and detectors
Analyser 1/1 or optional 1/3 octave1 real-time analysisFFT1 real-time analysis 1600 lines, up to 20.0 kHz band (option)RPM1 rotation speed measurement parallel to the vibration measurement (option)
Filters HP1, HP3, HP10, Vel1, Vel3, Vel10, VelMF, Dil1, Dil3, Dil10
RMS & RMQ Detectors Digital True RMS detector with Peak detection, resolution 0.1 dBTime constants: from 100 ms to 10 s
Accelerometer (option) Any IEPE accelerometer
Measurement Range Accelerometer dependent
Frequency Range 1 Hz ÷ 40 kHz (transducer dependent)

Technical Specifications - Basic Data

Interfaces ISO 10816-1
Meter mode Four NiMH rechargeable batteries (option) operation time > 8 h ÷ 12 h (4.8V / 2.6 Ah)2
SA 17A external battery pack operation time > 24 h (option)2
External power supply 6 V/500 mA DC ÷ 15 V/ 250 mA DC
USB interface 500 mA HUB
Environmental Conditions Temperature from -10oC to 50oC
Humidity up to 90 % RH, non-condensed
Dimensions 305 x 79 x 39 mm (with microphone and preamplifier)
Weight Approx. 0.6 kg with batteries
Each function parallel to the meter mode with USB 1.1 Host function not active and backlight off

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