SVAN 979

Sound & Vibration Analyser

The SVAN 979 Class 1 Sound & Vibration Analyzer is our flagship device. Your first impression will be the amazing OLED display which features excellent visibility in all light conditions. The instrument’s lightweight and durable aluminium housing not only gives a sense of a firm grip but also protects the valuable electronic device from damage and any influence from electromagnetic interference.

The SVAN 979 has a very large dynamic range of measurement – over 110dB. It’s high-quality GRAS 40AE microphone allows measurement in the frequency range starting as low as 3 Hz. The measurement path has been designed to allow the use of other microphones should you want to measure very low frequencies or very high levels of noise. The microphone preamplifier has also been reinforced with a collar to protect against mechanical damage. One amazing feature of the SVAN 979 is that if you disconnect the microphone preamplifier then you can use the instrument for vibration measurements – simply connect up a cable and a vibration sensor.

The SVAN 979 has an extensive range of hardware and firmware add-ons that includes built-in Bluetooth, windscreen infrared detector, direct connections to GPS module, GPRS or WiFi modem or the totally unique built-in vibration shock sensor that warns the user whenever the instrument itself is exposed to vibrations that may influence the noise measurements.

Two USB connectors allow for the simultaneous operation of USB pen-drives and communication with the computer. The USB connection also allows for audio streaming where the time signal is transferred to the computer and written in the form of a wav file for further analysis.

Usage of this number of advanced features at the same time is possible as the instrument has two high-speed digital signal processors. For example, the SVAN 979 is capable of measuring 2 ms steps of time history, logged simultaneously to audio recording (with 48kHz sampling) and real-time frequency analysis. Only the SVAN 979 can meet such a challenge. All data is stored on a microSD card of any capacity (default is 8GB) .

Features
  • Class 1 IEC 61672:2002 sound level measurements
  • General vibration measurements (acceleration, velocity and displacement)
  • Three parallel independent profiles
  • 1/1, 1/3 octave real-time analysis
  • 1/6 or 1/12 octave real-time analysis (option)
  • FFT real-time analysis 1600 lines in up to 22.4 kHz band
  • Time-domain signal recording
  • Advanced data logger including spectra’s logging and Audio Events Recording
  • Reverberation Time measurements (RT60)
  • Pure tone detection (option)
  • Acoustic loudness measurements (option)
  • Advanced trigger and alarm functions
  • User programmable Band-Pass Filters
  • Windscreen and extension cable auto detection
  • Built-in self vibration measurements
  • MicroSD card for mass data memory
  • Remote communication by GPRS or LAN & WLAN (optional hardware required)
  • GPS time synchronisation (optional hardware required)
  • USB 1.1 Client interface (real-time PC “front end”)
  • Bluetooth, RS 232 and IrDA interfaces
  • Super contrast (10000:1) colour OLED display
  • Built-in signal generator
  • All weather microphone protection SA 205
  • Hand held, light weight and robust case
Specifications
Standards Class 1: IEC 61672-1:2002 (PTB approval 21.21/13.06)
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 GRAS 40AE, 50 mV/Pa, prepolarised 1/2” condenser microphone
Preamplifier SV 17 IEPE type / 200V external polaristation compatible
Linear Operating Range 22 dBA RMS ÷ 140 dBA Peak (in accordance to IEC 61672)
Total Dynamic Measurement Range12 dBA RMS ÷ 140 dBA Peak (typical from noise floor to the maximum level)
Internal Noise Level less than 12 dBA RMS
Dynamic Range >110 dB
Frequency Range 3.15 Hz ÷ 20 kHz with GRAS 40AE 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 10 s (auto-save function) logging of time history with step from 2 ms
Audio Recording (option) Audio events recording during measurement, trigger or continuous mode, 12 / 24 / 48 kHz sampling rate, 16 or 24 bit, wav format
Wave Recording (option) Time domain signal recording during measurement 12 / 24 / 48 kHz sampling rate, 16 or 24 bit, wav format