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SVAN 958A Four Channels Sound & Vibration Analyser

SVAN 958A Class 1 Four-channel Sound & Vibration Analyser is dedicated for all applications that require simultaneous class 1 sound and 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 the user 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.

Features:

  • Four channels sound or vibration configurable
  • Human Vibration measurements meeting ISO 8041:2005 including VDV and MTVV
  • Sound level meter Class 1, IEC 61672
  • Advanced data logger including spectral analysis
  • USB memory stick providing almost unlimited logging capability
  • Advanced trigger and alarm functions
  • USB 1.1 Client and USB Host interfaces
  • RS 232 for modems support (GPRS, Ethernet, WLAN)
  • Powered by four AA standard or rechargeable batteries
  • Easy in use, hand held, light weight and robust

Analyser options:

  • FFT analysis up to 1600 lines in 20 kHz band
  • 1/1 and 1/3 octave real-time analysis
  • Time-domain signal recording
  • Sound intensity
  • FFT cross spectra
  • RT 60 reverberation time
  • Acoustic dose meter
  • Human Vibration measurements

SVAN 958A Sound Level Meter Specification 

Standards Class 1: IEC 61672-1:2002
Number of Profiles 3
Weighting Filters A, B, C, Z, G
Time constants Slow, Fast, Impulse
RMS Detector Digital True RMS detector with Peak detection, resolution 0.1 dB 
Microphone (option) MK 250, Class 1, 50 mV/Pa, prepolarised 1/2"e
Preamplifier (option) SV 12L IEPE type
Linear Operating Range 26 dBA RMS ÷ 140 dBA Peak (in accordance to IEC 61672)
Total Dynamic Measurement Range 16 dBA RMS ÷ 140 dBA Peak (typical from noise floor to the maximum level)
Internal Noise Level  less than 16 dBA RMS
Dynamic Range >100 dB
Frequency Range

3.5 Hz ÷ 20 kHz with MK250 microphone

Meter Mode Results SPL, Leq, SEL, Lden, LEPd, Overload time, Ltm3, Ltm5, LMax, LMin, LPeak,
Simultaneous measurement in three profiles with independent filters and detectors
Statistics

Ln (L1-L99), complete histogram in meter mode, averaging: linear of with detector (exponential)

Ln (L1-L99) statistics in 1/1 or 1/3 octaves (if option is active)

Data Logger

logging of summary results with step from 30 s (auto-save function)

logging of time history with step from 10 ms

Wave Recording (option) Time domain signal recording during measurement,  trigger or continuous mode, 12 / 24 / 48 kHz sampling rate, 16 or 24 bit, wav format
    

Sound Analyser

1/1 Octave Analysis (option)

Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 31.5 Hz to 16 kHz (audio band), selectable weighting filter, detector linear or

Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 1 Hz to 16 kHz  (full band), selectable weighting filter, detector linear

1/3 Octave Analysis (option)

Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 20 Hz to 20 kHz (audio band), selectable weighting filter, detector linear

Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 0.8 Hz to 20 kHz  (full band), selectable weighting filter, detector linear

 FFT Analysis (option)

480 or 960 or 1920 lines in selectable band from 87.5 Hz to 22.4 kHz with selectable weighting filter, linear averaging, selectable window

RT 60 (option)

Reverberation time analysis in 1/3 octaves, selectable method: decay or impulse

RPM (option) Rotation measurement option without Laser Tachometer (option), measurement of RPM, RPS, RMAX, RMIN
Cross Spectrum (option) Transfer Function and Coherence calculation
Sound Intensity (option) FFT - based sound intensity calculation
  

Vibration Level Meter

Standards ISO 8041:2005, ISO 10816-1
Number of Profiles 1 or 2 in Ground Vibration mode
Weighting Filters Wd, Wk, Wc, Wj, Wm, Wb, Wg (ISO 2631), Wh (ISO 5349), HP1, HP3, HP10, Vel1, Vel3, Vel10,
VelMF, Dil1, Dil3, Dil10, KB (DIN 4150)
RMS Detector Digital True RMS detector with Peak detection, resolution 0.1 dB
Time constants: from 100 ms to 10 s
Meter mode results RMS, MAX, Peak, Peak-Peak, Overload time, MTVV, VDV, CRF,
Accelerometer (option) SV 84 triaxial high sensitivity accelerometer for ground or building vibration measurements (1 V/g)
SV 38 triaxial accelerometers for whole-body measurements (1 V/g MEMS type)
Measurement Range

with SV 84: 0.0005 ms-2 RMS ÷ 50 ms-2 PEAK

Frequency Range 0.5 Hz ÷ 20 kHz; accelerometer dependent
  

Vibration Analyser

Ground Vibration (included) 2 vibration profiles for simultaneos measurement of PPV and VDV, simultaneous FFT analysis (if option active), simultaneous WAVE recording (if option active) according to DIN 4150-3 standard
1/1 Octave Analysis (option)

Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 1 Hz to 16 kHz  (full band), HP weighting filter, detector linear

1/3 Octave Analysis (option)

Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 0.8 Hz to 20 kHz  (full band), HP weighting filter, detector linear

 FFT Analysis (option)

480 or 960 or 1920* lines in selectable band from 78 Hz to 20 kHz with HP weighting filter, averaging: linear , and selectable window

*1920 lines not available for time history logging, minimum 50ms step for time history logging with 960 lines, minimum 20ms step for time history logging with 480 lines

RPM (option) Rotation measurement option without Laser Tachometer (option), measurement of RPM, RPS, RMAX, RMIN
Cross Spectra (option) Transfer Function and Coherence calculation
     

General information

Input IEPE type (channels 1, 2, 3 - LEMO 4-pin & channel 4 - TNC connector)
Dynamic Range 100 dB, 4 x 20 bits A/D converters
Frequency Range 0.5 Hz ÷ 20 kHz, sampling rate 48 kHz
Memory 32 MB non-volatile flash type, external USB memory stick (not included)
Display Colour 320 x 240 pixels, OLED type
Keyboard 9 push buttons
Communication Interfaces USB 1.1 client
USB 1.1 Host
RS 232 (with SV 55 option)
External I/O - AC output (1 V Peak) or Digital Input/Output (Trigger – Pulse)
 Power supply Four AA batteries (alkaline) or four AA rechargeable NiMH batteries (not included)
USB interface 500 mA HUB
External power supply 6 V DC ÷ 24 V DC (1.5 W)
SA 17A external battery pack (option)
Environmental Conditions Temperature from -10 oC to 50 oC
Humidity up to 90% RH, non-condensed
Dimensions 140 mm x 82 x 42 mm
Weight  Approx. 0.5 kg 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
  • Building acoustic
  • Infrasound
  • High level/low level noise
  • Hand-arm vibration
  • Whole-body vibration
  • Machine vibration
  • Building/ground vibration

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