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    ST-105 Class I Sound Analyzer. 1/1 & 1/3 Octave Band Filter. Certificate: IEC 61672-1:2002 Class I, ANSI S1.4. Measurement range: 25dB~140dB.

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ST-105 Class 1 Sound Analyzer

ST-105 Class 1 Sound Octave Analyzer is designed to meet the latest international standards IEC 61620-1:2001 (or the equivalent ANSI S1.11 : 2004). ST-105 Sound Analyzer provides not only real-time analysis of sound in 1/1 and 1/3-octave bands for environmental noise measurements but can also perform sound intensity measurements and sound power measurements to be used for occupational noise measurements.


Features

  • Wide frequency range: 10Hz ~ 20kHz
  • Wide measurement range: 25dB ~ 140dB
  • Wide dynamic range: 90 dB
  • Parallel A / C / Z & Fast/Slow frequency weighting
  • Real time 1/1 & 1/3 octave spectral analysis of noise
  • Statistic analysis & integral measurement
  • USB on-the-go. Can transfer data to USB stick easily
  • Modularize design provides 4 sub models
  • Simultaneously measures A, C, Z and F, S, Impulse

Specifications

    • Evaluation of environmental noise and logging
    • Measurements of occupational noise at workplaces
    • Sound power determination and sound intensity (Type 2270)
    • Building acoustics measurements (facade)
    • FFT analysis of sound and vibration
    • Tone assessment using 1/3‐octave and FFT methods
    • Loudness and noise rating measurementsLow‐frequency building vibration according to ISO 8041:2005
  • Item Description
    Measurement items Lp, LAFp, LAFmax, LAFmin, LAF5, LAF10, LAF50, LAF90, LAF95, SD, LAeq1s, LAeqT, LD, LN, LDN, LAE, LCpeak
    Measurement range 25dB ~ 140dB (A), 30dB ~ 140dB (C), 35dB ~ 140dB (Z)
    Dynamic Range >90 dB
    Statistic Analysis Yes
    24hr measurement Yes
    Integrating Yes
    1/1 Octave Yes
    1/3 Octave Yes
    Background Noise < 13 dB(A), 15 dB(C), 25 dB(Z)
    Bargraph display Yes
    Display LCD with backlight (240 x 160 dots). Refresh rate: 1 Hz for readings, 10 Hz for graph
    Display refresh rate 1 time/ per second
    Applicable specifications IEC 61672-1 : 2002 Class1, ANSI S1.4 Type 1, CNS NO.7129 Type 1, JJG-188-2002 Class1
    Microphone 1/2” pre-polarized condenser microphone w/ built-in preamplifier. Sensitivity 50 mV/Pa. Frequency response 10 Hz...20 kHz. Heat noise < 16 dB(A)
    Integrate Time Setup randomly,10s, 1m, 5m, 10m, 30m, 1h, 2h, 4h, 8h, 16h, 24h or set in a given range
    Max. peak sound level measurement 50~143 dB
    Time constant Fast/Slow/Impulse/PeakC+/PeakC-
    Frequency weighting A/C/Z
    Range gain -10 dB, 0 dB, 10 dB, 20 dB, 30 dB, 40 dB
    Range error < 0.1 dB
    Self-generated noise voltage < 4 uV (1 Hz...23 kHz)
    Measuring voltage range 15 uV...10 Vrms
    Sampling frequency 20.8 us (48 kHz)
    Boot time < 10 seconds
    Interface USB 1.1 & 2.0 compliance, mini B type. Support OTG up to 8 GB
    Battery LR6 1.5V*4 Alkaline batteries
    Dimensions 285(L) x 90(W) x 39(H) mm
    Weight 500g (including Batteries); 2.0Kg (including package)
    • IEC 61672-1 : 2002 Class1
    • IEC 61620-1 : 2001 Class1 Amendment
    • ANSI S1.11 : 2004
    • IEC-60651:1979 Type 1
    • IEC-60804:2000 Type 1
  • doc

    ST-105 User Manual ST-105 Class 1 sound octave analyze user manual 2015.

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    doc

    ST-105 Data Sheet ST-105 Class 1 sound Octave Analyzer datasheet 2015.

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