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SV 977 Sound and Vibration Analyser

The SV 977D is a Class 1 Sound and Vibration meter designed for building acoustics, occupational noise and environmental noise measurements.

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Overview
Specification
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The meter is a successor of SVAN 977A offering a new 1/2” microphone MK255 providing wide frequency range from 3 Hz and excellent long-time stability of sensitivity.  The SV 977D has a built-in Bluetooth® interface for wireless connection with with smart-phone applications like Building Acoustics Assistant that extends measurement capabilities dedicated for building acoustics.

One unique feature of the SV 977D is ultrasound measurement band up to 40 kHz. The ultrasound band is normally considered as the frequency range above 20 kHz. Ultrasound is used in a number of industrial processes such as cleaning, drilling or welding as well as hospitals for medical procedures.

The SV 977D can be also used as the vibration level meter – simply by connecting a cable and a vibration sensor.

SV 977D Technical Specifications

Sound Level Meter & Analyser

StandardsClass 1: IEC 61672-1:2013, Class 1: IEC 61260-1:2014
Type approvalsapproved according to WELMEC requirements
Microphone typeMicrotech Gefell MK 255
Preamplifier typeSV 12L
Linear operating range to IEC 6167223 dBA Leq÷140 dBA Peak
Total measurement range16 dBA Leq÷140 dBA Peak
Internal noise<16 dB LAeq
Frequency range3 Hz ÷ 20 kHz
Weighting filtersA, B, C, Z, LF, U, AU
Time constantsSlow, Fast, Impulse
Profiles per channel3
Min logging step2 ms
StatisticsLn (L1-L99)
Statistics in octaves or third octaves
Audio recordingoption
1/1 octave
1/3 octave
FFToption
RT60option
STIPAoption
RPMoption

Vibration Level Meter & Analyser

StandardsISO 20816
Number of channels1
Sensor typeIEPE
1/1 octave
1/3 octave
WAV recordingoption
FFToption
RPMoption

Hardware Features

Number of channels1
Auto-calibration
Remote communication
Bluetooth
GPS module
Communication InterfacesUSB-C, I/O, RS232, Bluetooth 5.2
Display
Keyboard9 keys
MemoryuSD 32 GB
Battery typeAA
Operating time12-16 hours
Operating temperature range-10 °C to 50 °C
Humidity rangeup to 90 % RH, non-condensed
Weight600 grams
Size343 x 79 x 39 mm

The policy of our company is to continually innovate and develop our products.

Therefore, we reserve the right to change the specifications without prior notice.

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Applications

SVAN 977

Ultrasound is used in a number of processes such as cleaning, drilling or welding. Ultrasound measurement up to 40 kHz

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