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SVAN 977 Sound & Vibration Analyser

SVAN 977 Class 1 Sound & Vibration Level Meter and analyser 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.
The SVAN 977 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.
Audio recording can be performed simultaneously with time history logging as either a separate wave file or as audio events inside time history files. This solution enables noise source recognition and data post-processing. Manual and automatic triggering of audio recording is also available. Measurement results are recorded in three acoustic or vibration profiles enabling measurements to be performed with 3 different filters (e.g. A, C, Z) and 3 different detector time constants (e.g. Fast, Slow, Impulse).
Measurement data is stored on a µSD card and can be easily downloaded to a PC using SvanPC++ software over either USB or RS 232 interfaces.
The powerful DSP (digital signal processor) used in the SVAN 977 instrument can simultaneously operate in meter mode and perform real-time 1/1 or 1/3 octave analysis including statistical calculations. Additional functions like real-time FFT analysis and Rotation Speed Measurement are also available.
The highly developed user interface works on networks like GPRS, Ethernet or Wireless LAN for both remote data download and settings configuration. The built-in Bluetooth® 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.
The instrument is powered by four AA standard or rechargeable NiMH batteries (separate charger is required), from an external DC power source or USB interface. The robust and light weight design complete the exceptional features of this next generation instrument.

FEATURES

  • Class 1 IEC 61672:2013 sound level measurements
  • Ultra sound measurements in 40 kHz band
  • General vibration measurements (acceleration, velocity and displacement)
  • Three parallel independent profiles
  • 1/1 octave real-time analysis
  • 1/3 octave real-time analysis (optional)
  • FFT analysis (optional)
  • Time-domain signal recording & audio events recording (optional)
  • Reverberation time measurements (optional)
  • Advanced Data Logger including spectral analysis
  • Statistical Level incl. Octavebands
  • Timer Function
  • Alarm Function
  • MicroSD card providing almost unlimited logging capacity
  • Bluetooth® interface (optional)
  • USB Host Modem-Interface (optional)
  • All weather microphone protection kit designed for community and airport noise monitoring (optional)
  • OLED color display with super brightness and contrast
  • Hand held, light weight and robust case
  • Easy to use

SVAN 977 Sound Level Meter Specification 

Standards Class 1: IEC 61672-1:2013
Number of Profiles 3
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 start at 114dB/1kHz
Preamplifier SV 12L IEPE type
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 with ACO 7052E microphone or

10 Hz ÷ 40 kHz with optional microphone, e.g MK 202E

Meter Mode Results SPL, Leq, SEL, Lden, Ltm3, Ltm5, LMax, LMin, LPeak, “sliding 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, 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 1s

logging of time history with step from 2ms

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
   

Sound Analyser

1/1 Octave Analysis (included)

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

Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 1 Hz to 31.5 kHz  (ultrasound band) with linear detector

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) with selectable weighting filter and detector or

Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 0.8 Hz to 40 kHz  (ultrasound band) with linear detector

 FFT Analysis (option)

400 or 800 or 1600 lines in selectable band from 78 Hz to 20 kHz with selectable weighting filter, selectable averaging: linear or exponential, and selectable window or

400 or 800 or 1600 lines in ultrasound band from 25 Hz to 40 kHz with selectable averaging: linear or exponential, and selectable window

RT 60 (option)

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

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

  

Vibration Level Meter and Analyser

Standards ISO 10816-1
Number of Profiles 3
Weighting Filters

Acceleration: HP1, HP3, HP10; Velocity: Vel1, Vel3, Vel10, Displacement: Dil1, Dil3, Dil10

Machine filter: VelMF (ISO 10816-1)

RMS Detector Digital True RMS detector with Peak detection, resolution 0.1 dB
Time constants: from 100 ms to 10 s
Accelerometer (option) SV 80 IEPE, single axis, sensitivity 10 mV/(ms-2) ~ 100 mV/g
Measurement Range 0.01 ms-2 RMS ÷ 500 ms-2 Peak (with SV 80)
Frequency Range 1 Hz ÷ 5 kHz (with SV 80 and HP or HP1 filter)
  

Vibration Analyser

1/1 Octave Analysis (included)

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

Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 1 Hz to 31.5 kHz  (ultra band) with linear detector

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) with selectable weighting filter and detector or

Real-time analysis meeting Class 1 requirements of IEC 61260, center frequencies from 0.8 Hz to 40 kHz  (ultra band) with linear detector

 FFT Analysis (option)

400 or 800 or 1600 lines in selectable band from 78 Hz to 40 kHz with HP weighting filter, selectable averaging: linear or exponential, and selectable window

RPM (option) Rotation measurement option without Laser Tachometer (option), measurement of RPM, RPS, RMAX, RMIN
  

General information

Input TNC (IEPE type)
Memory MicroSD card 8 GB (removable & upgradeable)
Display Colour 320 x 240 pixels, OLED type
Keyboard 9 push buttons
Communication Interfaces USB 2.0 client
Bluetooth® (option)
RS 232 (with SV 55 option)
External I/O - AC output (1 V Peak) or Digital Input/Output (Trigger – Pulse)
 Power supply Four AA alkaline or rechargeable NiMH batteries (not included)
USB interface 500 mA HUB
External power supply 6 V/500 mA DC ÷ 15 V/250 mA DC
SA 17A external battery pack (option)
Environmental Conditions Temperature from -10 oC to 50 oC
Humidity up to 90% RH, non-condensed
Dimensions 340 mm x 79 x 39 mm (including microphone and preamplifier)
Weight  Approx. 0.6 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
  • Occupational noise
  • Building acoustic
  • Ultrasound/infrasound
  • High level/low level noise
  • Machine vibration

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