SVANTEK Class 1 Sound and Vibration Level Meter
The SV 977D is a Class 1 Sound and Vibration Level Meter designed for advanced acoustic and vibration measurements in building acoustics, occupational noise, and environmental monitoring. It is equipped with a ½” MK 255 microphone, delivering a wide frequency range from 3 Hz up to 20 kHz, and offers excellent long-term sensitivity stability. The meter provides an extended measurement range up to 40 kHz for ultrasound analysis, making it suitable for industrial and medical applications. The SV 977D offers a total dynamic range from 16 dBA RMS to 140 dBA Peak (from the instrument’s noise floor to the maximum measurable level), while the IEC 61672-1 linearity range—measured with a margin above the noise floor—spans from 23 dBA RMS to 140 dBA Peak. This ensures both wide measurement capability and full compliance with the standard.
The meter is fully type approved to IEC 61672-1 Class 1. A wide range of accessories and a typical price of €4,000–€6,000 make the SV 977D a comprehensive and versatile solution for sound and vibration consultants.
Highlights
- All-in-one acoustic and vibration measurement: Combines wide-range sound, ultrasound, and vibration monitoring in a single Class 1 instrument.
- Advanced acoustic analysis: Supports A, B, C, Z, LF, U, and AU frequency weightings, Fast/Slow/Impulse time constants, and 1/1- and 1/3-octave filters (IEC 61260-1 compliant).
- Dual-function sound and vibration meter: Operates as a Class 1 vibration meter when connected to a sensor, compliant with ISO 20816-1.
- Wireless control and mobile app support: Equipped with Bluetooth® 5.2 for remote control and data access via apps, including Building Acoustics PRO (supports ISO 16283, RT60, and STIPA workflows).
- High-capacity data storage: Includes a 32 GB MicroSD card for storing time history data, WAV audio recordings, and project files for in-depth post-analysis.
- Rugged and field-ready design: Operates reliably in temperatures from –10 °C to +50 °C and up to 95% relative humidity, with over 16 hours of battery life using standard rechargeable AA batteries.
SV 977 – Class 1 Sound & Vibration Level Meter
Applications
Communication Interfaces
USB-C, I/O, RS232, Bluetooth 5.2
Operating time
12-16 hours
Operating temperature range
-10 °C to 50 °C
Humidity range
up to 90 % RH, non-condensed
Standards
Class 1: IEC 61672-1:2013, Class 1: IEC 61260-1:2014
Type approvals
Pattern approvals to IEC 61672 and WELMEC requirements
Microphone type
Microtech Gefell MK 255
Linear operating range to IEC 61672
23 dBA Leq÷140 dBA Peak
Total measurement range
16 dBA Leq÷140 dBA Peak
Internal noise
<16 dB LAeq
Frequency range
3 Hz ÷ 20 kHz
Weighting filters
A, B, C, Z, LF, U, AU
Time constants
Slow, Fast, Impulse
Statistics in octaves or third octaves
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