SVAN 955
Sound Level Meter - Low Cost, Type 1
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OVERVIEW
The SVAN 955 is all digital, Type 1 sound level meter along with analyser. Instrument is intended to general acoustic measurements, environmental noise monitoring, occupational health and safety monitoring. Three acoustic profiles allow parallel measurements with independently defined filters and RMS detector time constants.
Each profile provides significant number of results (like Leq, LMax, LMin , LPeak, Spl, SEL etc.). Advanced time history logging for each profile provides complete information about measured signal in non-volatile 16 MB internal memory or external USB Memory Stick (option) and can be easy downloaded to any PC using USB interface and SvanPC+ software. Acoustic dose meter function is also available as an option with the SV 25 dedicated microphone.
Fast USB 1.1
interface (12 MHz) creates real time link for the application of the SVAN
955 as a PC “front-end”. The measurement results can be also
downloaded to any PC using the RS 232 interface (option) or IrDA interface
(option). Instrument is powered from four AA standard or rechargeable
NiMH batteries. The powering of the instrument from the External DC power
source is also provided.
Robust and light weight design accomplishes the exceptional features of this
new generation instrument.
FEATURES
Sound Level Meter & Analyser
- Noise measurements with Type 1 accuracy
- Parallel Impulse, Fast and Slow detectors for the measurements with A, C or Lin (Z) filters
- Measurement range 26 dBA RMS - 141 dBA Peak in the SLM mode
- Advanced trigger function
- Acoustic dose meter (optional)
General
- Internal buffer for logging more than 1 500 000 of 1 sec results (8 MB memory) or more then 7 000 000 of 1 sec results (32 MB memory)
- USB 1.1 interface (real time PC "front end" application supported)
- USB 1.1 Host interface (optional)
- RS232 interface (optional) and IrDA (optional)
- Battery operational > 12h (with 4xAA alkaline batteries)
- Handheld, robust case
- Light weight (only ca 600 grams)
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TECHNICAL SPECIFICATIONS
| Sound level meter | Type 1: IEC 61672 (IEC 60651, IEC 60804) |
| Leq,
Lmax, Lmin, LPeak, Spl, SEL, Lden, Ltm3, Ltm5, statistics: Ln (L1-L99), Time History for all A, C, Lin (Z) filters in parallel |
|
| Input | TNC with IEPE power supply for the microphone preamplifier or accelerometer |
| Microphones | Prepolarised 1/2” condenser microphone (sensitivity 20 mV/Pa) with SV 12L preamplifier |
| Measurement range | 26 dBA - 141 dBA Peak |
| Internal noise level | < 18 dBA RMS |
| Dynamic range | >115 dB |
| A/D conversion: 20 bits | |
| Frequency range | 10 Hz - 20 kHz |
| Sampling rate: 48 kHz | |
| Weighting filters | A, C and Lin (Z) |
| RMS & RMQ detector | Digital
True RMS & RMQ with Peak detection, resolution 0.1 dB, Integration time programmable up to 24 h |
| Time constants | Slow, Fast, Impulse in the SLM mode (any three simultanously) |
| Display | LCD 128x64 pixels plus icons with backlight |
| Memory | 16 MB non-volatile (Flash type) or external USB "Memory Stick" up to 4GB (optional) |
| External I/O | AC Output or External Trigger Input |
| Interfaces | USB 1.1; RS 232 (optional) IrDa |
| Power supply | 4 x AA batteries: operating time up to 24 h (with alkaline batteries – operation mode dependent) |
| External power supply 8-15 VDC | |
| USB interface: 5V@150mA | |
| Environmental conditions | Temperature from -10 ˚C to 50 ˚C |
| Humidity up to 90% RH, non condensed | |
| Dimensions | 336 x 82 x 42 mm |
| Weight | approx. 0.6 kg with batteries |
PICTURE
SVAN 955 Sound Level Meter
