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.
Applications
Sound measurements | |
Occupational noise | |
Building acoustics |
Hardware Features
Number of channels | 1 |
Self-vibration detection | / |
Auto-calibration | / |
Bluetooth | / |
Communication Interfaces | USB, Bluetooth |
Display | / |
Keyboard | 8 keys |
Memory | internal 8 GB |
Battery type | 4 x AAA |
Operating time | 20-38 hours |
Operating temperature range | -10 °C to 50 °C |
Humidity range | up to 95% RH, non-condensed |
Weight | 225 g |
Size | 205 x 52 x 20 mm |
Sound Measurements Features
Standards | Class 2: IEC 61672-1:2013 |
Microphone type | MEMS |
Preamplifier type | Integrated |
Linear operating range to IEC 61672 | 32 dBA Leq÷128 dBA Peak |
Total measurement range | 25 dBA Leq÷128 dBA Peak |
Internal noise | < 25 dBA RMS |
Frequency range | 20 Hz ÷ 10 kHz |
Weighting filters | A, B, C, Z, LF |
Time constants | Slow, Fast, Impulse |
Exchange rates | 2, 3, 4, 5, 6 |
Criterion levels | adjustable |
Profiles per channel | 3 |
Min logging step | 100 ms |
Statistics | Ln (L1-L99) |
Statistics in octaves or third octaves | / |
Audio recording | option |
Voice comments | / |
1/1 octave | option |
1/3 octave | option |
RT60 | option |
STIPA | option |
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