SC 420Sound level meter and spectral analyser
Integrating Sound level meter class 1 with audio recording expandable to spectrum analyzer for third octave bands
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Features
ON&PLAYThe ON&PLAY philosophy has been developed to be intuitive - getting first time users up & running quickly & providing a stress-free return to measurements, even after long periods of inactivity.
ON&PLAY offers a simple and enjoyable experience from the first moment of contact with the device. With ON&PLAY, measurement has never been so easy. |
Removable MicroSD memory cardThe information measured by the SC420 (final results and time histories), audio files and voice notes are saved on the MicroSD card inserted into the SC420.
Once the measurements are complete and the SC420 is powered-off, the MicroSD card can be removed and inserted into a computer. The data can then be transferred using the program 'Memory Download' - the download can be completed much faster this way. 4 GB class 4 microSD cards have been tested successfully. |
Modular PlatformThe SC420 is an instrument that stands out for its power, versatility & ergonomics. It delivers high performance as a Class 1 integrating sound level meter (in accordance with IEC 61672, ANSI S1.4 and ANSI S1.43).
Thanks to its modular platform, the SC420 can be expanded with advanced measurement options such as 1/3-octave band spectral analysis, FFT analysis and reverberation time measurement. |
Automated ParametersThe SC420 has a complete system of automated parameters, such as starting & stopping measurement and audio recording. Automatic timers and triggers are also available when exceeding threshold by DEN time-zones .
Its power and versatility offer infinite combinations which will provide optimal performance for even the most demanding of users. |
Ready for environmental monitoringThe SC420 is designed to work as an automatic continuous noise monitoring unit. An environmental monitoring powering option is available, which allows measurements to be resumed after recovery from a power failure.
Optimal file structuring allows efficient data transfer & manipulation; this includes downloading while measuring and erasing parts that have already been downloaded. |
Audio recording and voice commentsThe SC420 can record audio files (listening quality), whilst it logs acoustic functions, facilitating its subjective evaluation and the recognition of sound sources.
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USB and Bluetooth® connectionsThe SC420 communicates with a PC through a USB port and through Class 1 wireless Bluetooth® communication, in order to download & manipulate data, as well as allowing external control and real time visualization.
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Back erase
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Optional Modules
OCCUPATIONAL NOISE (DS420)
What does it measure?Occupational noise mode simultaneously measures all the parameters necessary to evaluate the noise exposure of the worker with and without hearing protectors (SNR, HML and Octaves).
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Applications
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1/1 OCTAVE FILTERS (OF420)What does it measure?16 Hz to 16 kHz octave band filters analysis plus overall functions and NC and NR curves
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Applications
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1/3 OCTAVE FILTERS (TF420)What does it measure?10 Hz to 20 kHz 1/3-octave band filters analysis plus overall functions
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Applications
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REVERBERATION TIME (RT420)What does it measure?Reverberation time measurement by 1/1 and 1/3-octave bands using the interrupted noise and the integrated impulse response methods. Includes parameters for the evaluation of non-linear decay curves and the influence of the filters
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Applications
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FFT ANALYSIS (FF420)What does it measure?FFT Analysis of 10000 lines from 0 to 20000 Hz (2 Hz/line)
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Applications
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WAVEFORM FILES RECORDING (HI420)What does it measure?Records WAV (uncompressed) format audio files, 24 bits resolution, 48 kHz sampling frequency and constant gain for later analysis
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Applications
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Software

CESVA Lab
The SC420 sound level meter measures a lot of functions for very long periods of time and also records audio files automatically. The best way to approach the analysis of all these functions together with the qualitative information provided by the audio files is to use the CESVA Lab software application.
The SC420 sound level meter measures a lot of functions for very long periods of time and also records audio files automatically. The best way to approach the analysis of all these functions together with the qualitative information provided by the audio files is to use the CESVA Lab software application.
View and ListenMoreover, it provides an intuitive and user-friendly interface which allows numerically and graphically display of all the measurement information on the screen in several synchronized panels (spectrum and time history graphs and 3D spectrograms) and listen to the audio files for each sound event.
Edit and re-calculateIf what you want is to recalculate a section, simply select it, add it to a layer and simply calculate. Different layers, containing several sections, can be calculated simultaneously. Each layer is calculated and saved in a separate file.
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Download and configureCESVA Lab is cost free and gives you a simple way to download all the information from the SC420 by simply removing the microSD card and post-process it. It also allows you configuring the SC420 from the PC.
Export and ResportTo navigate through the information, CESVA Lab has an audio and mark browser and a very powerful zoom and pan tool for finding the desired section and then automatically generate a PDF report.
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Complete Sets
EM542Set consisting of: SC420 sound level meter, CB006 Sound level calibrator, TR40 tripod, ML043 transporting briefcase
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EM242Set consisting of: SC420 sound level meter, CB006 Sound level calibrator, ML013 transporting briefcase
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EM642Set consisting of: SC420 sound level meter, CB006 Sound level calibrator, TR040 tripod, ML063 transporting briefcase
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Data Sheet & Product Information |
Certification and StandardsTable of Standards
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Type-Approval CertificatesSpain
11/09/2013: Type examination 25/07/2013: Software 07/10/2013: Additional 1 Type examination 27/09/2013: Additional 1 Software 11/11/2013: Additional 2 Software 30/05/2014: Additional 3 Software 07/11/2014: Additional 4 Software 22/05/2015: Additional 5 Software 18/12/2015: Additional 6 Software Portugal 17/02/2014: Type-approval Certificate |