SV 973 Sound Level Meter

SV 973A is a Class 2 sound level meter with a wide frequency range up to 10 kHz. The unique feature of the SV 973A 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. The meter is designed in accordance with IEC 61672-1:2013, ensuring accurate and professional sound level monitoring across various workplaces.


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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 973A 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.

Class 2 Sound Level Meter, also known as Type 2 Sound Level Meter, is a professional noise level meter designed to meet the requirements of the IEC 61672-1:2013 standard for precision and accuracy. The specifications for Class 2 and Class 1 sound level meters share similar design goals, primarily differing in their acceptance limits and operational temperature ranges. The acceptance limits for a Class 2 Sound Level Meter are generally equal to or greater than those of a Class 1 meter, depending on frequency. The accuracy of a Class 2 Sound Level Meter is specified by IEC within a range of 20 Hz to 8 kHz, and a temperature range from 0 to 40°C. As per the IEC 61672 standard, a Class 2 Sound Level Meter is equipped with a microphone, a preamplifier, and a signal processor. These components work in unison to capture and process noise levels, which are then displayed on an integrated screen. This design ensures accurate, reliable results in professional noise level monitoring applications.


Sound measurements
Occupational noise
Building acoustics

Hardware Features

Number of channels1
Self-vibration detection/
Communication InterfacesUSB, Bluetooth
Keyboard8 keys
Memoryinternal 8 GB
Battery type4 x AAA
Operating time20-38 hours
Operating temperature range-10 °C to 50 °C
Humidity rangeup to 95% RH, non-condensed
Weight225 g
Size205 x 52 x 20 mm

Sound Measurements Features

StandardsClass 2: IEC 61672-1:2013
Microphone typeMEMS
Preamplifier typeIntegrated
Linear operating range to IEC 6167232 dBA Leq÷128 dBA Peak
Total measurement range25 dBA Leq÷128 dBA Peak
Internal noise< 25 dBA RMS
Frequency range20 Hz ÷ 10 kHz
Weighting filtersA, B, C, Z, LF
Time constantsSlow, Fast, Impulse
Exchange rates2, 3, 4, 5, 6
Criterion levelsadjustable
Profiles per channel3
Min logging step100 ms
StatisticsLn (L1-L99)
Statistics in octaves or third octaves/
Audio recordingoption
Voice comments/
1/1 octaveoption
1/3 octaveoption



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