SVAN 955 is an all digital, Type 1 sound level meter. This instrument is intended for 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.). Using computational power of its digital signal processor the SVAN 955 instrument can, simultaneously to the meter mode, perform real-time 1/1 octave analysis including statistical calculation. 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 and can be easy downloaded to any PC using USB interface and SvanPC+ software.
Acoustic dosimeter function is available with the SV 25_2 dedicated microphone. Fast USB 1.1 interface (12 MHz) creates real-time link for the PC "front-end" application of the SVAN 955 instrument. It can be controlled and the measurement results can be also downloaded to any PC using the RS 232 or IrDA interfaces.
Instrument can be offered with GPRS modem, LAN & WLAN connection module. Together with SvanPC+_RC remote communication software, these interfaces provide easy remote access to instrument settings & data over internet and local area network.
Instrument is powered from four AA standard or rechargeable batteries (separate charger is required). The powering of the instrument from the external DC power source or USB interface is also provided. Robust case and light weight design accomplish the exceptional features of this new generation instrument.
Features
- Type 1 sound level measurements meeting IEC 61672:2002
- Single measurement range in meter mode
- Three parallel independent profiles
- 1/1 octave real-time analysis
- Free-field & diffuse-field measurements
- Advanced Data Logger, up to 12 results logged simultaneously including spectra
- Time History recording on USB Memory Stick provides almost unlimited logging capacity
- All weather measurements with SA 203 microphone protection kit
- Acoustic dose meter
- Advanced trigger and alarm functions
- IEPE and Voltage Input
- USB 1.1 interface (real time PC "front end" application)
- USB 1.1 Host interface
- RS 232 and IrDA interfaces
- Integration time programmable up to 24 h
- Power supply by four AA rechargeable or alkaline batteries
- Hand held, light weight and robust case
- Easy to use
Specifications
SOUND LEVEL METER / ANALYSER
- Standards: Type 1: IEC 61672-1:2002
- Meter mode: Leq, Spl, SEL, LEP,d, Lden, Ltm3, Ltm5, Statistics - Ln (L1- L99), LMax, LMin, LPeak Simultaneous measurement in three profiles with independent set of filters and detector time constants
- Analyser: 1/1 octave real-time analysis, 10 filters with centre frequencies from 31.5 Hz to 16 kHz, Type 1, IEC 61260 (option)
- Weighting Filters: A, C and Z
- RMS Detector: Digital True RMS detector with Peak detection, resolution 0.1 dB Time Constants: Slow, Fast, Impulse
- Microphone: 7052, nominal sensitivity 22 mV/Pa, prepolarized 1/2
- Measurement Range: Total Dynamic Range: 18 dBA RMS ÷ 141 dBA Peak Linearity Range: 25 dBA RMS ÷ 141 dBA Peak
- Data Logger: Time History logging of RMS / Max / Min / Peak results to internal memoryor USB Memory Stick (USB Host option) with logging step down to 2 ms. Up to 12 measurement results logged simultaneously (option)
- Dynamic Range: 120 dB
- Internal Noise Level: less than 18 dBA RMS
- Frequency Range: 20 Hz ÷ 20 kHz, sampling rate 48 kHz
BASIC DATA
- Input: IEPE with TNC connector (SV 12L IEPE preamplifier) and Voltage input
- Data logger:Time History logging of RMS / Max / Min / Peak results to internal memoryor USB Memory Stick (USB Host option)
- Display: LCD 128 x 64 pixels plus icons with backlighting
- Memory: 16 MB non-volatile flash type, external USB Memory Stick (option)
- Interfaces: USB 1.1 Client, USB 1.1 Host (option), RS 232 (with SV 55 option), IrDA (with USB Host option) Extended I/O: AC output (1 V Peak) or Digital Output (Alarm trigger)/Digital Input (Input trigger)
- Power supply: Four NiMH rechargeable batteries (option): operation time > 16 h (4.8 V / 2.6 Ah)
- Four AA batteries (alkaline): operation time > 12 h (6.0 V / 1.6 Ah)
- SA 17A external battery pack: operation time > 24 h (option)
- External power supply: 6 V DC ÷ 15 V DC (1.5 W)
- USB interface: 500 mA HUB
- Environmental Conditions: Temperature: from -10°C to 50°C Humidity: up to 90 % RH, non-condensed
- Dimensions: 335 x 82 x 42 mm (with microphone and preamplifier)
- Weight: Approx. 610 grams with batteries, microphone and preamplifier
