Cesva SC420 Class 1 Sound Level Meter
Sound level meter and spectrum analyser
Integrating Sound level meter class 1 with audio recording expandable to spectrum analyzer for third octave bands
➤ INCLUDED Audio recording with pre-recording and voice comments.
➤ Increased storage with MicroSD memory card
➤ Automated Parameters: timers, DEN thresholds, external input:
1) Auto start/stop of measurement and logging
2) Auto audio recording & pre-recording
➤ Erasing backward (BACK ERASE function)
➤ Built-in USB & BLUETOOTH® connectivity
➤ Sensitivity, date & time change history
➤ Ready for environmental monitoring:
1) Auto ON and automatic measurement and logging start
2) Downloads while measures
➤ Free or diffuse sound-field correction options
➤ Can be expanded with advanced measurement modes (see optional Modules)
Main Features
ON&PLAY
The 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 card
The 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 Platform
The 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 spectrum analysis, FFT analysis and reverberation time measurement.
Automated Parameters
The 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 monitoring
The 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.
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Audio recording and voice comments |
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USB and Bluetooth® connections |
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Back erase |
| The 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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The 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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With the Back erase function, the SC420 can delete the last 10 seconds of the measurement in progress. This option is ideal when unwanted noise events occur during measurement.
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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).
Applications
- Industrial acoustic
- Noise measurements for air conditioning installations (HVAC)
- Sound Insulation measurements
- Frequency analysis of industrial noise, environmental and labour
- Background noise in rooms
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
Applications
- Sound insulation measurements
- Noise measurement for air conditioning installations ( HVAC)
- Frequency analysis of industrial noise, environmental and labour
- Background noise in rooms
1/3 OCTAVE FILTERS (TF420)
What does it measure?
10 Hz to 20 kHz 1/3-octave band filters analysis plus overall functions
Applications
- Sound Insulation measurements in third octave band
- Assessment of environmental noise (Corrections for the presence of tonal and impulsive components and low frequency content)
- Detection and identification of noise sources
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
Applications
- Evaluation of the reverberation time of rooms
- Measurement of sound absorption in a reverberation room
- Measurement of sound insulation in buildings and of construction materials
FFT ANALYSIS (FF420)
What does it measure?
FFT Analysis of 10000 lines from 0 to 20000 Hz (2 Hz/line)
Applications
- Detection and evaluation of the tonal components
- Frequency analysis of continuous and transient signals (industrial and environmental)
- Evaluation of tonal components according to ISO 1996-2 and DIN 45681.
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
Applications
- This mode can be advantageous independently of the application in which it is being used as it allows a perfect acquisition of the audio signal, to carry out a post processing and obtain additional information.
Standards
Table of standards |
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Type-approval Certificates |
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11/09/2013: Type examination
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/A1:2001 Class 1 Filters
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España
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25/07/2013: Software
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| OIML R 58:1998
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Class 1 Sound level meter
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07/10/2013: Additional 1 Type examination
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| OIML R 88:1998
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Class 1 Integrating sound level
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27/09/2013: Additional 1 Software
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| OIML R 130:2001
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Class 1 Filters
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11/11/2013: Additional 2 Software
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| ANSI S1.4-1983(R2006)
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/ANSI S1.4a-1985(R2006) Class 1 Sound level meter
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30/05/2014: Additional 3 Software
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| ANSI S1.43-1997(R2007)
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Class 1 Integrating sound level
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07/11/2014: Additional 4 Software
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Class 1 Filters
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22/05/2015: Additional 5 Software
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/A1:2001 Class 1 Filters
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18/12/2015: Additional 6 Software
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Class 1 Sound level meter
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Complies with 73/23/CEE and CEM 89/336/CEE low-tension regulations, the latter amended by 93/68/CEE. |
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17/02/2014: Type-approval Certificate
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Portugal
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Software
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CESVA Lab |
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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. |
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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.
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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.
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Export and ReportTo 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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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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Complete Sets
Cesva EM542
Sound Level Meter Set consisting of: SC420 sound level meter, CB006 Sound level calibrator, TR40 tripod, and ML043 transporting briefcase
Cesva EM242
Sound Level Meter Set consisting of: SC420 sound level meter, CB006 Sound level calibrator, and ML013 transporting briefcase
Cesva EM642
Sound Level Meter Set consisting of: SC420 sound level meter, CB006 Sound level calibrator, TR40 tripod, and ML063 transporting briefcase
Optional Accessories
Cesva CB006 Class 1 Acoustic Calibrator
Class 1 Acoustic Calibrator
Cesva PR003
Extension Rod for microphones (3 m). Adaptor for microphone supplied
Cesva TR001
Tripod support for the preamplifier and microphone
Cesva CN420
Multi-connector Cable (RS232 serial port, AC output, Digital output, Digital input)
Cesva CN030
Extension Cable for Preamplifier and Microphone (30 m)
Cesva CN010
Extension Cable for Preamplifier and Microphone (10 m)
Cesva CN003
Extension Cable for Preamplifier and Microphone (3 m)
Cesva TK200
Outdoor Kit for outdoor measurements with desiccator, microphone and preamplifier protections against rain, wind and birds. Includes 3m cable, ML011 carrying case and AK250 adapter for microphones C240 and C140, Microphone C-130 does not need adapter. Kit for Class 1 sound level meters (SC420, SC310 and SC101)
Cesva ML063
Carrying Case Special Weather (51 x 38 x 15 cm) for SC420, acoustic calibrator and Tripod
Cesva ML043
Carrying Case (48 x 37 x 16 cm) for SC420, acoustic calibrator and Tripod
Cesva AM300
Mains Transformer 220V to 5V
Cesva TR050
Tripod for sound level meter, dosimeter and microphone. Maximum height 1.55 meters
Cesva TR040
Tripod for sound level meter, dosimeter and microphone. Maximum height 1.1 meters
Cesva AM150
Battery Converter 12V to 5V
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