SOUND AND VIBRATION MEASUREMENT SYSTEMS
With the latest additions, MMG Acoustical Consultants intends to offer client with the full measurement solutions to both noise and vibration related concerns or problems. This allows MMGAC to expand the clients to include industrial and research related client who require noise and vibration measurement with the ability to analyse data in FFT, if required.
HD2010 Type 1 Sound Level Analyzer
MMG Acoustical Consultants has procured a Type 1 Precision Sound level Analyzer with Data logging and 1/3 Octave Analyzer capability. The single channel instrument is the new workhorse of the firm to assist in the continuous acquisition of data for acoustical analysis and noise surveys. This comes with Data capture and analysis software to allow handing of large volumes of data. The machine can measure and record 80000 points of instantaneous measurements and integration of 1/32 second readings for values at every half second. The instrument has been upgraded to take impulse noise based reverberation time measurements and will become handy for measurements of reverberation levels of large, complex or difficult spaces. This instrument complements the 3-Dimensional acoustical Modeling Software, which is discussed separately, as and when required.
HD2110 Type 1 Sound Level Analyzer
MMG Acoustical Consultants has procured a SECOND Type 1 Precision Sound level Analyzer with Data logging and 1/3 Octave Analyzer capability and FFT analysis. The single channel instrument is the second workhorse instrument and will join the HD2010 Type 1 Sound Level Analyzer of the firm to assist in the continuous acquisition of data for acoustical analysis and noise surveys especially in industrial noise control where Fast Fourier Transform Analysis of Tones are required (Narrow-band spectral analysis (FFT) with variable resolution from 1.5Hz to 100Hz). This comes with Data capture and analysis software to allow handing of large volumes of data. The machine also can measure and record 80000 points of instantaneous measurements and integration of 1/32 second readings for values at every half second. The instrument comes with impulse noise based reverberation time measurements.
RION VA-12 Vibration Analyser
The latest addition to the measurement capability is the RION VA-12, which is a powerful, practical and selfstanding machinery vibration analyser to perform four principal functions.
As a vibration meter it will simultaneously display overall levels of vibration in terms of acceleration, velocity and displacement.
As an FFT analyser it will show the (instantaneous, linear or exponentially averaged or maximum) spectrum in terms of acceleration, velocity or displacement. This is to supplement the need for additional vibration based analysis for industrial noise and vibration related sources.
The waveform for each vibration parameter can be viewed when the meter is put in Time mode.
Finally, the instrument can also store calibrated wav files to the SD card allowing full post processing on any measured signals using the RION proprietary processing software.
It can store up to 100 files each containing 1000 measurements
RION NA-20 Type 2 Sound Level Meter
MMG Acoustical Consultants began offering services using an analogue Type 2 Precision Sound level Measurement reader with Octave Filter measurement capability. Even today, this machine is reliable in terms of performance because of the high quality mechanical measurement system and 1 inch diameter microphone, which is suitable for high degree of accuracy. The sensitivity of this meter is one dB on a variable mechanical scale which allows measurement from 30 dB to 130 dB on three weightings – dB(A) , dB(C) and dB(Z).
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