SC420

Overview

Features

  • Class 1 integrating sound level meter
  • Optional real-time spectrum analyzer:
    • Octave bands 16 Hz to 16 kHz
    • 1/3 octave bands 10 Hz to 20 kHz
    • FFT analyzer, number of lines 10000, 0 - 20kHz (2 Hz/line)
  • Real-time sound level meter
  • Simultaneously measures all parameters in frequency weightings A, C and Z
  • One measuring range for all measurements
  • Audio recording (16 bit / 24kHz), optionally 24 bit / 48kHz
  • Storage extension via microSD memory card
  • Automatic start/stop mode
  • BACK ERASE function
  • USB & BLUETOOTH®
  • Free- and diffuse-field correction

Applications

  • Measurements for assuring health protection
  • Sound insulation measurements
  • Frequency analysis of industrial and environmental noise

cesva.com The SC420 is an easy-to-use Class 1 integrating sound level meter. It may be used as a sound level meter or a real-time spectrum analyzer. The applied filters comply with Class 1. All levels are measured simultaneously. The measured values serve as basis for the calculation of the main acoustic parameters. The pre-amplifier may be operated remotely using an extension cable, which is supplied as an accessory.

Options

SC420 version / option overview
Version Order no. Features
SC420 Sound Level Meter 801672.0 Class 1 sound level meter, accessories: ML013 carrying case, PV009 wind screen, CN400 USB cable, SD-microSD adapter, SI020 CESVA lab software
SC420 SLM type 1 bundle 801678.6 Class 1 sound level meter, accessories: ML013 carrying case, PV009 wind screen, CN400 USB cable, SD-microSD adapter, SI020 CESVA lab software, extension modules: TF20, FF420, HI420
OF420 option Octave SC420 801677.8 Real-time spectrum analyzer: Octave bands 16 Hz to 16 kHz
TF420 option 1/3 Oct. SC420 801674.5 Real-time spectrum analyzer: 1/3 octave bands 10 Hz to 20 kHz
FF420 option FFT SC420 801675.3 FFT analyzer: number of lines 10000, 0 - 20kHz (2 Hz/line)
HI420 option WAV SC420 801676.1 uncompressed audio recording: 24 bit, 48 kHz sample rate, fixed gain for post-processing
RT420 opt reverb. 801601.3 Measurement of the reverberation time in 1/3 and 1/1 octave bands, signal type: interrupted noise and impulse
Calibrator CB006, 94dB, 1 kHz 801269.4 Class 1 calibrator, 94 dB

Standards

IEC 61672-1:2002: Class 1 sound level meter

IEC 61260:1995/A1:2001: Class 1 filter

OIML R 58:1998:Class 1 sound level meter

OIML R 88:1998:Class 1 integrating sound level meter

OIML R 130:2001:Class 1 filter

ANSI S1.4-1983(R2006): American National Standard - Class 1 sound level meter

ANSI S1.43 - 1997 (R2007): American National Standard - Class 1 integrating-averaging sound level meter

ANSI S1.11-2004: American National Standard - Filters of class 1

EN 61260:1995: Class 1 filter

EN 61672-1:2003: Class 1 sound level meter

Software

cesva.com The free CESVA Lab software allows you to retrieve the measurement data storage via microSD card. Furthermore individual set-ups can be created for the SC420 and transferred to the instrument. The software also includes graphical representation of all measured data in several graphs and playback of sound events. CESVA Lab includes extensive report and export features. For further information please refer to SC420.

Technical specifications

General technical specifications of SC420
Microphone ½" exchangeable, 200V-polarized condenser microphone 43.5mV/Pa (C-140 with pre-amplifier PA020) or
½" exchangeable, pre-polarized condenser microphone 49.0 mV/Pa (C-240 with pre-amplifier PA040) or
½" exchangeable, 200V-polarized condenser microphone 17.5 mV/Pa (C-130 with pre-amplifier PA020)
Measuring range C-140+PA020: 23.4 - 137.0dBA
C-240+PA040: 23.4 - 137.0dBA
C-130+PA020: 24.8 - 137.0dBA
Sound level meter -
Functions
L AFL CFL ZFL ASL CSL ZSL AIL CIL ZIL ATL CTL ZT
max. and min.
L AtL CtL ZtL AEL CEL ZEL ApeakL CpeakL ZpeakL AITL AItL ZITL ZItL CITL CIt
L 1L 5L 10L 50L 90L 95 L 99
Frequency analyzer -
1/3 octave mode (optional)
10Hz ÷ 20kHz1/3 octave band
Frequency analyzer -
Octave mode (optional)
16 Hz ÷ 16 kHzoctave band
Frequency analyzer -
FFT mode (optional)
Number of lines 10000, 0 - 20kHz (2Hz / line)
Frequency weightings A, C and Z (linear)
Audio recording Audio recording: 16 bit, 24kHz sample trate
Optional uncompressed audio recording: 24 bit, 48kHz sample rate, fixed gain for post-processing
Batteries 2x LR6-type 1.5V AA alkaline batteries
Dimensions 292mm x 85mm x 25mm
Weight 330g incl. batteries
Accessories PV009 wind screen, SI020 software, CN400 USB cable, ML013 carrying case, microSD memory card, SD-microSD adapter, SI020 CESVA Lab software, 2x 1,5V AA batteries

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