SVAN 971 is an extremely small Class 1 IEC 61672-1:2013
Sound Level Meter (SLM) and real time 1/1 & 1/3 octave
analyser.
The new user interface of this instrument makes measurement
configuration as easy as possible. This all makes SVAN 971 an
ideal choice for industrial hygiene noise measurements, short
period environmental noise measurements, acoustics
consultancy surveys, technical engineers dealing with noise
issues and general acoustics noise measurements.
SVAN 971 provides broad band results with all required
frequency weighting filters plus real time 1/1 octave & 1/3 octave
spectra in the audio range.
The instrument enables huge time history logging capability
providing broad band results and spectra with adjustable double
(long and short) logging steps. Audio recording on user
selectable trigger conditions complete the logging functionality.
Data are stored on a micro SD memory card and can be easily
downloaded to PC (with the provided SvanPC++ software) over
USB or optional RS 232 interfaces.
The instrument can be easily calibrated in the field using a sound
calibrator. A built-in algorithm automatically activates the
calibration process whenever a sound calibrator is installed on
the microphone and the calibration history is saved for later
inspection.
Thanks to a robust (IP65) and pocket size housing, this
instrument is an excellent tool for anyone who deals with
acoustic measurements.
SVAN 971 comes with SvanPC++ software for data
downloading, visualization, basic post-processing and exporting
to commonly used office software applications. Additionally, a
dedicated software package for environmental monitoring
(SvanPC++_EM) is also available. This module supports
measurement data management, advanced data processing
and analysis, visualization and automated reporting.
• SLM Mode: OVL, Lpeak, Lmax, Lmin, L, Leq, LE, Lden, LEPd, Ltm3, Ltm5, Lnn, with Class 1
IEC 61672-1:2013 accuracy in the frequency range 10 Hz ÷ 20 kHz with ACO 7052E microphone
(38mV/Pa, prepolarised ½” condenser microphone)
• Sound dosimeter mode (option): OVL, Lpeak, Lmax, Lmin, L, DOSE, D_8h, PrDOSE, LAV,
Leq, LE, SEL8, E, E_8h, LEPd, PSEL, Ltm3, Ltm5, Lnn, PTC, PTP, ULT, TWA, PrTWA and
Lc-a
• parallel Impulse, Fast and Slow detectors for the measurements with A, B, C, Z and LF
frequency filters
• total linearity measurement range 25 dBA LEQ ÷ 140 dB PEAK; is divided into two ranges:
- low range: 25 dBA LEQ ÷ 123 dB PEAK
- high range: 30 dBA LEQ ÷ 140 dB PEAK
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