The SV 971A is a Class 1 Sound Level Meter and Sound Exposure Meter designed for professional acoustic measurements. It features an omnidirectional, pre-polarised microphone, providing a 120 dB range from 17 dBA Leq to 140 dB Peak in a single span. The device maintains IEC 61672-1 linearity from 24–137 dB LAeq over 5 Hz to 20 kHz frequency range, covering acoustics, noise at work regulations, community noise, and environmental sound pressure levels. Built-in A, C, Z, and LF weightings, Fast, Slow, and Impulse time weightings, and IEC 61260-1-compliant octave filters allow this compact instrument to handle both low noise background monitoring and impulsive noise tasks.
Bluetooth® enables remote control and data review, while the 32 GB data logger stores high-rate time histories. The SV 971A provides up to 24 hours of battery life and maintains Class 1 accuracy from –10 °C to +50 °C and 10–90% RH, ensuring reliability in the field. Advanced functions—RT60, STIPA, audio recording, and real-time analysis—are managed by dedicated software and a mobile app. The meter is fully type approved to IEC 61672-1 Class 1. A wide range of accessories and a typical price of €2,500–€4,000 make the SV 971A a comprehensive and versatile solution for acoustic professionals.
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- Class 1 accuracy in a wide measurement range: With the new microphone, the SV 971A can measure from 27 dBA Leq up to 140 dBA Peak in a single range with the class 1 precision in accordance with the IEC 61672-1. For measurements of extremely low noise level, the additional LOW range is also available.
- Occupational noise measurements: The meter is suitable for measurements of noise at work in accordance with standards such as ISO 9612, OSHA, MSHA and ACGIH, and hearing protector selection in accordance with ISO 4869-2.
- Real-time frequency analysis: The 1/1 octave analysis is often used for the selection of hearing protectors. The 1/3 octave function allows the determination of the influence of high or low frequencies on overall values. Functions can be activated at any time by ordering the activation code.
- Triggered audio recording: Audio recording is synchronized with a noise time-history and it can be opened and played back in PC software enabling noise source recognition. Audio recording can be triggered on threshold or time. It can be activated at any time by ordering the activation code.
- Time-history logging: The time history logging of results such as Leq, Max, Min and Peak with two simultaneous logging steps is saved on a 32 GB microSD card (upgradeable to 128 GB).
- Low power consumption: One of the biggest advantages of using SV 971A is its power efficiency. It can run up to 24 hours on one set of small AAA batteries.
- Brand: Svantek