AcSoft
Svantek UK

SV 973 Sound Level Meter

SV 973 is a Class 2 sound level meter with a wide frequency range up to 10 kHz. The unique feature of the SV 973 is the microphone in MEMS technology with a lifetime warranty. The meter’s measurement range from 25 to 128 dB enables its use in industrial and environmental noise measurements.

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For measurements of noise at work, the intelligent sound exposure meter function limits the frequency range to 10 kHz and shifts the dynamic measuring range of sound level meter to 141 dB Peak. The instrument is easily calibrated in the field using an acoustic calibrator as the calibration begins automatically when the microphone is inserted into the calibrator. The SV 973 can measure broad-band results with all the necessary weighting filters as well as 1/1 octave or 1/3 octave band filters. Audio events recording function works together with sound level meter mode. The data are stored on built-in 8 GB memory and can be easily downloaded to a PC using the Supervisor or SVANPC++ software.

SV 973 Technical Specifications
Sound Level Meter
Standards Class 2: IEC 61672-1:2013
Weighting Filters A, B, C, Z, LF
Time Constants Slow, Fast, Impulse
RMS Detector Digital True RMS detector with Peak detection, resolution 0.1 dB
Microphone ST 973 MEMS microphone in 1/2” housing
Preamplifier Integrated
Total Dynamic Range 25 dBA RMS ÷ 128 dBA Peak (typical from noise floor to the maximum level)
Linear Operating Range 32 dBA RMS ÷ 128 dBA Peak (in accordance to IEC 61672)
Internal Noise Level Less than 25 dBA RMS
Frequency Range 20 Hz ÷ 10 kHz
Meter Mode Results Elapsed time,
Lxy, Leqx (LEQ), Lxpeak (PEAK), Lxymax (MAX), Lxymin (MIN), LEx, Lden, LEPd, Ltm3, Ltm5,
where x – weighting filter A/ B/ C/ Z; y – time constant Fast/ Slow/ Impulse
EX (expected LEQ value), SD (standard LEQ deviation), OVL (overload time %).
Measurement Profiles Simultaneous measurement in three profiles with independent set of filters (x) and detectors (y)
Statistics Ln (L1-L99), complete histogram in meter mode
Data Logger Time-history logging of summary results, spectra with two adjustable logging steps down to 100 ms
Audio Recording (optional) Audio events recording, trigger and continuous mode, 12 kHz sampling rate, WAV format
Voice Comments Audio records on demand, created before or after measurement, added to measurement file
Sound Exposure Meter
Total Dynamic Range 43 dBA RMS ÷ 141 dBA Peak (typical from noise floor to the maximum level)
Linear Operating Range 50 dBA RMS ÷ 141 dBA Peak (in accordance to IEC 61672)
Frequency Range 20 Hz ÷ 10 kHz
Exchange Rates 2, 3, 4, 5, 6
Measurement Results Lxy, Leqx (LEQ), Lxpeak (PEAK), Lxymax (MAX), Lxymin (MIN), LEx, Lden, LEPd, Ltm3, Ltm5, Ln (Leq statistics),
where x – weighting filter A/ C/ Z; y – time constant Fast/ Slow/ Impulse
Lc-a, DOSE, D_8h, PrDOSE, LAV, LAE8 (SEL8), PLAE (PSEL), E, E_8h, PTC (peak counter), PTP (peak threshold),
ULT (upper limit time), TWA, PrTWA, EX (expected LEQ value), SD (standard LEQ deviation),
OVL (overload time %).
Analyser
1/1 Octave Analysis Filters Real-time analysis meeting Class 1 requirements of IEC 61260-1:2014,
centre frequencies from 31.5 Hz to 8 kHz (optional)
1/3 Octave Analysis Filters Real-time analysis meeting Class 1 requirements of IEC 61260-1:2014,
centre frequencies from 20 Hz to 10 kHz (optional)
RT 60 RT 60 reverberation time analysis in 1/1 or 1/3 octave bands (optional)
General Information
Memory Built-in 8 GB memory
Display Colour 96 x 96 pixels OLED type
Keyboard 8 push buttons
Communication Interfaces USB 2.0, Bluetooth® 4.2
Power Supply Four AAA alkaline or rechargeable NiMH batteries (not included)
Operation time 20 h ÷ 38 h1
Environmental Conditions Temperature from -10 °C to 50 °C
Humidity up to 95 % RH, non-condensed
Physical Characteristics Dimensions 205 mm x 52 x 20 mm with microphone
Weight Approx. 225 grams with batteries

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