SVAN - Model 957 -Analyzer and Sound Level Meter

SVAN 957 standard set comes with 1/1 octave analysis and weighting filters (e.g.: A, C, HP1, VEL1, DIL1). Functionalities such as 1/3 octave analysis, statistical calculations, acoustic dose measurements, FFT analysis and Reverberation Time measurements are also available as options.

The latest weighting filters according to ISO 2631-1&2 standard together with RMQ detector enable direct measurement of the Vibration Dose Value (VDV). Because SVAN 957 is a single channel instrument, a triaxial measurements require a separate measurement in each axis, which of course is more time-consuming.

During the measurement SVAN 957 uses three acoustic or vibration profiles. In practice it means that values such as Leq, LMax, LMin, LPeak, Spl, SEL or RMS, PEAK, VDV, MTVV are obtained with different weighting filters in the same time. This feature is extremely valuable when the comparison of measurements is required.

USB host exceed memory limitation allowing the direct data storage on the USB memory stick. Optionally, SVAN 957 can record a raw audio data to a flash disk in WAV format, so the sources of noise can be played back and identified by listening (Time Domain Signal Recording). The audio events recording function is very useful in measurements requiring unattended monitoring.

Easy communication with the PC is supported by the free of charge software SvanPC+. This already advanced and user-friendly software can be optionally upgraded to provide remote communication with the SVAN 957 instrument by the GPRS wireless transmission or RS 232 interface using generally available serial port extender devices. This exceptional feature makes SVAN 957 the leading product for measurements in field (environmental monitoring).

SVAN 957 is powered from NiMH standard or rechargeable AA batteries. The powering of the instrument from the External DC power source or USB interface is also provided.

Robust and light weight design accomplish the exceptionality of this new generation instrument.

• Type 1 sound level measurements meeting IEC 61672:2002
• General vibration measurements (acceleration, velocity and displacement) and HVM meeting ISO 8041:2005 standard
• Three parallel independent profiles
• 1/1 and 1/3 octave real time analysis
• Acoustic dose meter function
• FFT real time analysis (1920 lines in up to 22.4 kHz band)
• Reverberation Time measurements (RT 60)
• Advanced Data Logger including spectra logging
• USB Memory Stick providing almost unlimited logging capacity
• Time domain signal recording
• Advanced trigger and alarm functions
• USB 1.1 Host & Client interfaces (real time PC “front end” application supported)
• RS 232 and IrDA interfaces
• Modbus protocol
• Integration time programmable up to 24 h
• Power supply by four AA rechargeable or standard batteries
• Hand held, light weight and robust case
• Easy in use

1. A very powerful low cost, type 1 sound level meter meeting IEC 61672:2002 standard requirements along with 1/1 octave analyser.
2. SVAN 957 offers general vibration measurements (acceleration, velocity and displacement) and optionally Human Vibration Measurements meeting ISO 8041:2005 standard.
3. Three profiles allow parallel measurements with independently defined filters and RMS detector time constants what in fact means that SVAN 957 is three meters in one instrument.
4. Exceptional logging capability, twelve results logged simultaneously with logging step down to 10 milliseconds.
5. USB host controller provides almost unlimited memory capacity with external USB flash memory ("Memory Stick").
6. Exceptional feature - time domain signal recording on external USB flash memory with parallel real-time measurements.
7. SVAN 957 instrument can be provided with 1/1 & 1/3 octave analysis, FFT analysis, RT 60 reverberation time measurements and RPM measurements.
8. Each analysis function works parallel to the meter mode.
9. The measurement data can be easy downloaded to any PC using USB or RS 232 interface and SvanPC+ software. IrDA (infrared interface) is also available as an option.
10. The SVAN 957 instrument can be offered with the SV 211 monitoring station and the SA 203 outdoor microphone kit. Instrument is powered from four standard "AA" batteries or NiMH rechargeable batteries like also from the USB interface or External DC source.