SVAN 948
4 Channel Sound & Vibration Data Logger
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OVERVIEW
The SVAN 948 is all digital, 4 channels, Type 1 vibration and sound level meter and analyser. It is an ideal choice for the “Human Vibration” and noise measurements in the occupational health and safety monitoring tasks.
All required weighting filters, as well as transducer (including triaxial seat accelerometer) are available with this unit.
Four vibration and/or sound channels can work in parallel with independently set-up transducers, filters and RMS detectors time constant (e.g. simultaneous measurement of the Whole Body and noise dose). Large 32 MB internal memory of the SVAN 948 can store time history for all channels over the whole working day.
Measurement results are easily
downloaded to any PC using the USB 1.1 interface and SvanPC software.
The SVAN 948, using computational power of its built-in digital signal
processor, can optionally perform 4 channels 1/1 or 1/3 octave and real time
FFT analysis.
The SVAN 948 can be used in hard environmental conditions, also in the field of the machinery condition monitoring. Robust, lightweight construction fulfils the exceptional features of this instrument.
FEATURES
- Four channels simultaneous vibration and/or sound measurement
- Human Vibration measurements Type 1 accuracy (ISO 8041) including VDV and MTVV
- Noise measurements Type 1 IEC 61672 (IEC 651 and IEC 804)
- Acoustic dose meter function (optional)
- 32 MB internal buffer for logging more then two weeks of 1 sec results
- 1/1 and 1/3 octave real time analysis (optional)
- FFT analysis (optional)
- Easy operation
- USB 1.1 interface
- Battery operational time > 8 h
- Handheld, robust case
- Light weight (ca 500 grams only)
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TECHNICAL SPECIFICATIONS
| Sound level meter | Type 1: IEC 651, IEC 804 and IEC 61672-1 |
| Spl, Leq, SEL, Lden, Ltm3, Ltm5, statistics: Ln (L1-L99), Lmax, Lmin , LPeak, Time History | |
| Vibration meter | Type 1: ISO 8041, RMS, VDV, Peak, Peak-Peak, Max (MTVV), Time History |
| Sound & Vibration Analyser | Real time 1/1 & 1/3 octave or FFT analysis (optional) |
| 1920-line FFT spectra calculated in the real time for 20 kHz and sub-bands (optional) | |
| Input | 4 channels (channels 1 - 3 – Lemo 4 pin connector and channel 4 – TNC connector) with IEPE power supply for the accelerometers or microphone preamplifiers |
| Accelerometers | SV 39A/L
seat accelerometer for Whole Body measurements SV 3023M2 triaxial accelerometer for Hand-Arm measurements Other IEPE accelerometers optional |
| Microphones | SV 22
prepolarised 1/2” condenser microphone (50 mV/Pa sensitivity) with SV 12
preamplifier, or SV MI17 (Type 2) 1/4” electret microphone |
| Measurement range | 0.003ms-2
- 1000 ms-2- RMS (with 10 mV/ms-2- accelerometer)
or 24dBA RMS - 140 dBA Peak (with 50 mV/Pa microphone) |
| Internal noise level | < 17 dBA |
| Dynamic range | 100 dB |
| A/D conversion: 4 x 20 bits | |
| Frequency range | 0.5 Hz - 20 kHz (input transducer dependent) |
| Sampling rate: 51.2 kHz | |
| Weighting filters | W-Bxy,
W-Bz, W-Bc, H-A (ISO 8041), Wk, Wc, Wd, Wj, Wh (ISO 2631-1 and ISO 5349), A, C and Lin (Z) (Type 1: IEC 651, IEC 804 and IEC 61672-1) |
| RMS & RMQ detector | Digital True RMS & RMQ with Peak detection, resolution 0.1 dB, Integration time programmable up to 24 h, |
| Time constants | 100 ms
to 10 s in the Vibration Meter mode Slow, Fast, Impulse in SLM mode |
| Display | LCD 97x32 pixels plus icons with backlight |
| Memory | 32 MB, non-volatile (Flash type) |
| Interfaces | USB 1.1 |
| Power supply | 4 x AA batteries operating time > 8 h |
| External power supply 6-24 VDC / 250 mA | |
| USB interface: 5V@300mA | |
| Environmental conditions | Temperature from -10 ˚C to 50 ˚C |
| Humidity up to 90% RH, non condensed | |
| Dimensions | 135 x 82 x 42 mm |
| Weight | approx. 0.5 kg with batteries |
PICTURE
SVAN 948 Analyser
Screen Shots
