SV 258 PRO

Indoor/Outdoor Monitoring System (Sound & Vibration)

SV  258  PRO is an outdoor monitoring system based on SVAN   958A Class 1 sound level meter. The portable and battery powered station can be used for a variety of monitoring applications including construction site monitoring, tunneling and blasting. The IP 65-rated case contains a lead-acid battery which operating time can be easily extended by connecting an external battery or small solar panel. The intelligent charging unit enables use of a solar panel without expensive controllers and heavy batteries.

The case is fitted with very robust, waterproof connectors (military standard) and comes with an IP 65 external power supply. The system uses a low-noise, hermetically sealed tri-axial piezoelectric accelerometer enabling the outdoor use without additional enclosures. The accelerometers’ signal ground is insulated from the mounting surface and outer case to prevent ground loops. All accessories fit conveniently into a second carrying case.

The system provides broad-band vibration results such as RMS and Peak or Peak-Peak. Optionally it can use FFT analysis for determination of dominant frequency used for comparison with the BS and DIN norm curves. The broad-band noise results can be recorded simultaneously in three acoustic profiles, which enable measurements to be taken with 3 different filters (e.g. A, C, Z) as well as 3 different detector time constants (e.g. Fast, Slow, Impulse).

The SVAN 958A can be easily removed from the case and used as hand-held vibration and sound level meter. The monitoring station uses the 3G modem for the remote communication with Internet. SvanNET, the relay server, supports the connection between PC and station allowing the usage of all types of SIM cards with the system, regardless if they have public or private IP. The connection over the SvanNET gives access to the status of the noise monitoring station via mobile phone or tablet.

SV 258 PRO


Standards DIN 4150-3, DIN 4150-2, BS 7385-2, 22/09/1994, 23/07/1986, IN-1226, USER FFT, USER 1/3 OCTAVE
Meter Mode PPV, DF, RMS, VDV, MAX, Peak, Peak-Peak, Vector, aw, awv
Profiles Per Channel 2 (Velocity and Acceleration)
Analyser 1/3 octave real-time analysis or FFT analysis
Time domain signal recording to WAV format
Filters in Velocity Profile DIN 80, DIN 315, VEL1
Filters in Acceleration Profile HP1, HP3, HP10, Wk, Wd, Wc, Wj, Wm, Wg, Wb
RMS & RMQ Detectors Digital true RMS & RMQ detectors with Peak detection, resolution 0.1 dB
Detector Time Constants Fast 125 ms in accordance to DIN 4150-2
Total Dynamic Measurement Range15 dBA RMS ÷ 133 dBA Peak (typical from noise floor to the maximum level)
Internal Noise Level less than 15 dBA RMS
Dynamic Range >115 dB
Frequency Range 3.5 Hz ÷ 20 kHz with GRAS 40AE microphone
Meter Mode Results SPL, Leq, SEL, Lden, Ltm3, Ltm5, LMax, LMin, LPeak Simultaneous measurement in three profiles with independent filters and detectors
Statistics Ln (L1-L99), complete histogram in meter mode Ln (L1-L99) statistics in 1/1 or 1/3 octaves (if option is active)
Data Logger logging of summary results with step from 1 s (auto-save function) logging of time history with step from 2 ms
Audio Recording (option) Audio events recording during measurement, trigger or continuous mode, 12 / 24 / 48 kHz sampling rate, 16 or 24 bit, wav format