AcSoft
Svantek UK

SV 258 Pro Vibration & Noise Monitoring Station

The SV 258 PRO is dedicated for building vibration measurement that use methods based on Peak Particle Velocity and Dominant Frequency. The measurement of human vibration in buildings is possible as the program allows simultaneous measurement of velocity and acceleration of vibrations with two independent steps of recording. In addition, it is possible to enrich the measurement with Class 1 sound results.

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The 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, tunnelling 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 built-in GSM modem transmits measurement data to the SvanNET server where the user has access to current data, files with historical data and can also generate a measurement report. The system generates SMS and Email notifications as well as visual and audible alarms (optional alarm lamp). In addition to simple triggers from PPV or LEQ values, the you can configure alarms from standard curves (e.g. DIN 4150-3) or custom curves based on FFT or 1/3 octaves. It is possible to move the criterion curve up or down the scale so that the alarm is generated earlier or later. The time and value of the alarm are saved together to the memory of the meter.

Users of the SV 258 PRO can use predefined settings compatible with commonly used standards such as DIN 4150-3 or BS 7385-2 or configure a criterion curve based on FFT or 1/3 Octave analysis in accordance with local standards.

The vibration time history in the form of WAV is stored for all three channels and is used for verification of vibration sources. Accurate post-analysis of the frequency content of the signal is available in the SvanPC ++ program.

SV 258 Pro Technical Specifications

StandardsDIN 4150-3, DIN 4150-2, BS 7385-2, 22/09/1994, 23/07/1986, IN-1226, USER FFT, USER 1/3 OCTAVE
Meter ModePPV, DF, RMS, VDV, MAX, Peak, Peak-Peak, Vector, aw, awv
Profiles Per Channel2 (Velocity and Acceleration)
Analyser1/3 octave real-time analysis or FFT analysis
Time domain signal recording to WAV format
Filters in Velocity ProfileDIN 80, DIN 315, VEL1
Filters in Acceleration ProfileHP1, HP3, HP10, Wk, Wd, Wc, Wj, Wm, Wg, Wb
RMS & RMQ DetectorsDigital true RMS & RMQ detectors with Peak detection, resolution 0.1 dB
Detector Time ConstantsFast 125 ms in accordance to DIN 4150-2
AccelerometerSV 84 triaxial high sensitivity (1 V/g),
noise floor RMS: 14 μm/s (VEL1), 2 μm/s (VEL3)
Measurement RangeSV 84: 0.0005 m/s2 RMS ÷ 50 m/s2 PEAK
Frequency RangeSV 84: 0.2 Hz ÷ 315 Hz
StandardsClass 1: IEC 61672-1
Meter ModeSPL, Leq, SEL, Lden, Ltm3, Ltm5, Statistics – Ln (L1-L99), LMax, LMin, LPeak
Weighting FiltersA, C, Z, G
RMS DetectorDigital true RMS detector with Peak detection, resolution 0.1 dB
Detector Time ConstantsSlow, Fast, Impulse
Microphone kit (optional)SV 208A outdoor microphone kit with an extension cable
Measurement Range16 dBA RMS ÷ 140 dBA Peak (Total Dynamic Range)
Linearity Range26 dBA RMS ÷ 140 dBA Peak (IEC 61672)
Frequency Range0.5 Hz ÷ 20 kHz (microphone dependent) with MK 255: 3.5 Hz ÷ 20 kHz
Remote Communication3G modem
Power SupplyDC power supply / charger 11 V ÷ 30 V (waterproof)
Internal battery 17 Ah / 12 V
Secondary external battery 33 Ah / 12 V (optional)
Solar panel (optional)
Operating Time on Battery3 days with continuous modem transmission2
7 days with modem switched off2
Test Conditions: meter mode, display dimmed, 10 ms time-history logger
Environmental ConditionsTemperature -10 °C ÷ +50 °C
Dimensions420 x 340 x 210 mm (without accessories)
WeightApproximately 9 kg including battery

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Applications

SV 258 PRO

Measure triaxial velocity and acceleration in parallel and calculate Peak Particle Velocity and Vibration Dose value simultaneously

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