SVAN 948 Sound & Vibration Data Logger
Note:
This model is now discontinued
and has been replaced by the SVAN 958
|
 |
SVAN 948 Four Channels Sound & Vibration Meter/Analyser
The SVAN 948 is all digital, 4 channels, Type 1 vibration and sound meter along with analyser. Real time analysis is performed simultaneously in four channels in 20 kHz band. It is an ideal choice for the "Human Vibration" (according to the ISO 2631-1&2 and ISO 5349-1&2 standards) and noise measurements in the occupational health and safety monitoring tasks. All required weighting filters, transducers and adapters for triaxial Whole-Body and triaxial Hand-Arm vibration measurements are available with this instrument.
Four vibration / sound channels can work simultaneously with independently set of transducers, filters and RMS detectors time constant in each channel (e.g. simultaneous three axis measurement of the Whole-Body vibration and noise dose).
Large 32 MB (or 64 MB) internal memory of the SVAN 948 instrument can store time history of all four channels over the whole working day. Measurement results can be easy downloaded to any PC using the USB 1.1 interface and SvanPC software.
The SVAN 948, using computational power of its builtin digital signal processor, can perform simultaneously real time 4 channels 1/1 or 1/3 octave or FFT analysis (optional).
Thanks to advance trigger function it is possible to achieve multi-channels measurements applying several SVAN 948 instruments (one master SVAN 948 instrument and several other SVAN 94x instruments).
The SVAN 948 can be used in hard environmental conditions like the industrial machinery condition monitoring.
Robust, lightweight construction completes the exceptional features of this instrument.
Features
 | Four channels simultaneous real time vibration and/or sound measurements in 20 kHz band |
| Human Vibration measurements Type 1
accuracy (ISO 8041) including VDV and MTVV Noise measurements Type 1 IEC 61672 (IEC 651 and IEC 804) |
| 32 MB (optional 64 MB) internal buffer for logging more than two (four) weeks of 1 sec results |
| Acoustic dose meter function (option) |
| 1/1 and 1/3 octave real time analysis (option) |
| FFT analysis (optional) |
| RT 60 Reverberation Time (option) |
| Sound intensity (option) |
| Advanced trigger function |
| Easy in use |
| USB 1.1 interface |
| Integration time programmable up to 24 h |
| Light weight robust case (only ca 500 grams including batteries) |
Specification
| VIBRATION LEVEL METER / ANALYSER | |
| Standards | Type 1: ISO 8041, ISO 2631-1 & 2 and ISO 5349-1 & 2 |
| Meter mode | RMS, VDV, MTVV or MAX, Peak, Peak-Peak, Min, Time History |
| Analyser (option) | Real time four channels 1/1, 1/3 octave and FFT analysis |
| Weighting Filters | Wk , Wc , Wd , Wj , Wm , Wh |
| RMS & RMQ Detectors | Digital True RMS & RMQ detectors
with Peak detection, resolution 0.1 dB, Time Constants: from 100 ms to 10 s |
| Accelerometers (option) | SV 39A seat accelerometer for
Whole-Body measurements SV 50 set for Hand-Arm measurements (incl. SV 3023M2 triaxial accelerometer) |
| Measurement Range | 0.003 ms-2 - 1000 ms-2 RMS (with SV 39A seat accelerometer) |
| SOUND LEVEL METER / ANALYSER | |
| Standards | Type 1: IEC 651, IEC 804 and IEC 61672-1 |
| Meter mode | SPL, L eq , SEL, L den , L tm3 , L
tm5 , statistics - L n (L 1 -L 99 ), L Max, L Min, L Peak, Time History |
| Analyser (option) | Real time four channels 1/1, 1/3 octave or FFT analysis, RT 60 and Sound Intensity |
| Weighting Filters | A, C and Lin (Type 1: IEC 651, IEC 804 and IEC 61672-1) |
| RMS Detector | Digital True RMS detector with Peak
detection, resolution 0.1 dB, Time Constants: Slow, Fast, Impulse |
| Microphones (option) | SV 22 (Type 1) prepolarised 1/2" condenser microphone (50 mV/Pa sensitivity) with SV 12 IEPE preamplifier or SV MI17 (Type 2) 1/4" electret microphone with builtin IEPE preamplifier |
| Measurement Range | 24 dBA RMS - 140 dBA Peak (with SV 22 microphone) |
| BASIC DATA | |
| Input | 4 channels (channels 1 ÷ 3 - Lemo 4 pin socket and channel 4 TNC connector) with IEPE power supply for the accelerometers or microphone preamplifiers |
| Dynamic Range | 100 dB, 4 x 20 bits A/D converters |
| Frequency Range | 0.5 Hz - 20 kHz (input transducers dependent), sampling rate: 51.2 kHz |
| Display | LCD 97 x 32 pixels plus icons with backlighting |
| Memory | 32 MB or 64 MB (option) non-volatile (flash type) |
| Interface | USB 1.1 |
| Power Supply | 4 x AA batteries operation time >
12 h (alkaline batteries) With external battery operation time > 24 h (optional SA 17A pack ) External power supply 6 - 24 V DC (1.5 W) USB interface 5V @ 300 mA |
| Environmental Conditions | Temperature -10 oC to 50oC Humidity up to 90 % RH, non condensed |
| Dimensions | 140 x 82 x 42 mm (without transducers) |
| Weight | Approx. 0.5 kg with battery |
IMAGE
|
|
 |
Main result one channel view |
 |
Main results 3 channels view |
 |
1/3 octave spectrum |
