Sensidyne Industrial Health and Safety

SVAN 977 Sound & Vibration Analyzer

Svantek SVAN 977 Class 1 Sound Level Meter

SVAN 977 Sound & Vibration Analyzer

SVAN 977 is the next generation of Type 1 sound & vibration instruments and is designed to meet the needs of both environmental monitoring and occupational health and safety monitoring specialists. Its exceptional hardware design also enables the measurement of ultrasound frequencies in the 40 kHz band. 

The SVAN 977 provides broadband results with all the standard weighting filters and also offers an incredible time history logging capability providing broadband results and spectra with adjustable double (long and short) logging steps. 

Audio recording can be performed simultaneously with time history logging as either a separate wave file or as audio events inside time history files. This solution enables noise source recognition and data post-processing. Manual and automatic triggering of audio recording is also available. Measurement results are recorded in three acoustic or vibration profiles enabling measurements to be performed with 3 different filters (e.g. A, C, Z) and 3 different detector time constants (e.g. Fast, Slow, Impulse).

Measurement data is stored on a SD card and can be easily downloaded to a PC using SvanPC++ software over either USB or RS 232 interfaces. 

The powerful DSP (digital signal processor) used in the SVAN 977 instrument can simultaneously operate in meter mode and perform real-time 1/1 or 1/3 octave analysis including statistical calculations. Additional functions like real-time FFT analysis and Rotation Speed Measurement are also available.

The highly developed user interface works on networks like GPRS, Ethernet, WLAN or ZigBee for both remote data download and settings configuration. The built-in Bluetooth interface together with smart-phone application, SvanMobile, extends measurement capabilities with all the features offered by smart-phones including text/voice comments, photo, video, GPS position etc.

The instrument is powered by four AA standard or rechargeable NiMH batteries (separate charger is required), from an external DC power source or USB interface. The robust and light weight design accomplishes the exceptional features of this next generation instrument.

Download Datasheet
Standards Type 1: IEC 61672-1:2002
Meter mode SPL, Leq, SEL, Lden, Ltm3, Ltm5, Statistics - Ln (L1-L99), LMax, LMin, LPeak Simultaneous measurement in three profiles with independent set of filters and detectors

1/1 or optional 1/3 octave1 real-time analysis meeting Type 1 requirements of IEC 61260

FFT 1 real-time analysis 1600 lines, up to 20.0 kHz band (option)
Reverberation time analysis in 1/3 octave bands (RT 60 option)

Weighting filters A, B, C , Z
RMS Detector Digital True RMS detector with Peak detection, resolution 0.1 dB,
Time Constants: Slow, Fast, Impulse
Microphone ACO 7052E, nominal sensitivity 35 mV/Pa, prepolarized 1/2" condenser microphone

Total dynamic measurement range

15 dBA RMS - 140 dBA Peak (typical from noise floor to the maximum level)

Linear operating range 25 dBA RMS - 140 dBA Peak (in accordance to IEC 61672)
Internal Noise Level less than 15 dBA RMS
Frequency Range

10 Hz ?? 40 kHz (transducer dependent)

Standards ISO 10816-1
Meter mode RMS, MAX, Peak, Peak-Peak
Simultaneous measurement in three profiles with independent set of filters and detectors
Analyser 1/1 or optional 1/3 octave1 real-time analysis
FFT1 real-time analysis 1600 lines, up to 20.0 kHz band (option)
RPM1 rotation speed measurement parallel to the vibration measurement (option)

HP1, HP3, HP10, Vel1, Vel3, Vel10, VelMF, Dil1, Dil3, Dil10

RMS & RMQ Detectors Digital True RMS detector with Peak detection, resolution 0.1 dB
Time constants: from 100 ms to 10 s
Accelerometer (option) Any IEPE accelerometer

Measurement Range

Accelerometer dependent

Frequency Range

1 Hz ?? 40 kHz (transducer dependent)

Input IEPE type (TNC connector)
Dynamic Range >110 dB
Frequency Range 1.0 Hz @ 22.4 kHz (sampling rate 48 kHz) or 44.0 kHz (sampling 96 kHz);
Data logger1 Time-history logging with adjustable double (long and short) logging steps Time-domain signal recording and audio events recording function both to micro SD card or USB Memory Disk
Display Super contrast (10000:1) OLED 2.4?_? colour display (320 x 240 pixels)
Memory 32 MB non-volatile flash type, micro SD card 4 GB (included) or external USB Memory Stick (not included)
Interfaces USB 2.0 Client, Bluetooth (optional), RS 232 (with SV 55 option)
Extended I/O - AC output (1 V Peak) or Digital Input/Output (Trigger Pulse)
Power supply
Four NiMH rechargeable batteries (option) operation time > 8 h ?? 12 h (4.8V / 2.6 Ah)2
SA 17A external battery pack operation time > 24 h (option)2
External power supply 6 V/500 mA DC ?? 15 V/ 250 mA DC
USB interface 500 mA HUB
Environmental Conditions
Temperature from -10oC to 50oC
Humidity up to 90 % RH, non-condensed
Dimensions 305 x 79 x 39 mm (with microphone and preamplifier)
Weight Approx. 0.6 kg with batteries
1each function parallel to the meter mode
2with USB 1.1 Host function not active and backlight off