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SV 973 Sound Level Meter Class 2

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. 

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 Sound Level Meter is CLASS 2 instrument in accordance to IEC 61672-1:2013
  • Microphone in MEMS technology with lifetime warranty
  • Sound exposure meter mode with measurement range up to 141 dB
  • Wide frequency range up to 10 kHz 
  • Automatic calibration 
  • OLED display
  • Noise sources recognition with 1/1 and 1/3 octave and audio recording 
  • RT60 reverberation time measurement in 1/1 or 1/3-octave bands in accordance to ISO 3382

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
Linear Operating Range 32 dBA RMS ÷ 128 dBA Peak (in accordance to IEC 61672)
Total Dynamic Measurement Range 25 dBA RMS ÷ 128 dBA Peak (typical from noise floor to the maximum level)
Internal Noise Level  less than 25 dBA RMS
Frequency Range 20 Hz ÷ 10 kHz
Meter Mode Results

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/ ImpulseEX (expected LEQ value), SD (standard LEQ deviation), OVL (overload time %),

Simultaneous measurement in three profiles with independent set of filters and detectors

Statistics Ln (L1-L99), complete histogram in meter mode
Data Logger Time-history logging of summary results, spectra with adjustable double logging steps down to 100 ms
Audio Recording (option) 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

Linear Operating Range 50 dBA RMS ÷ 141 dBA Peak (in accordance to IEC 61672)
Total Dynamic Range 43 dBA RMS ÷ 141 dBA Peak (typical from noise floor to the maximum level)
Frequency Range 20 Hz ÷ 10 kHz
Dosimeter Mode 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/ ImpulseLc-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 Real-time analysis meeting Type 1 requirements of IEC 61260, center frequencies from 31.5 Hz to 8 kHz available simultaneously with three profiles for broadband measurements (SLM), time-history logging and audio recording (included)
1/3 Octave Analysis Real-time analysis meeting Type 1 requirements of IEC 61260, center frequencies from 20 Hz to 10 kHz available simultaneously with three profiles for broadband measurements (SLM), time-history logging and audio recording (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 client, Bluetooth® 4.2
Power supply Four AAA alkaline or rechargeable NiMH batteries (not included)
USB interface 100 mA HUB
Environmental Conditions Temperature from -10 oC to 50 oC
Humidity up to 95% RH, non-condensed
Physical Characteristics Dimensions: 205 mm x 52 x 20 mm (including microphone)
Weight: Approx. 225 grams with batteries

 

*Continuous product development and innovation are the policy of our company. Therefore, we reserve the right to change the specifications without prior notice.



 
 
    
 


 
 

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SV 973 Class 2 Sound Level Meter

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