SC420
Integrating sound level meter and real-time spectrum analyzer
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
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
| 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 and approvals
Standards and approvals
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
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
| 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 |