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Noise Analyzer
Noise Analyzer
Noise Analyzer
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  • Noise Analyzer
  • Noise Analyzer
  • Noise Analyzer
  • Product description
  • Specifications
  • FEATURES

    Selectable application modules for measuring wide range of acoustic parameters

    Internal 1/1 and 1/3 octave filters

    25 to 130dB measuring range

    128 x 64 graphic LCD with back-lit

    Lower back ground noise

    Comply with IEC 61672-1: 2002 class 1

    USES

    Precision acoustics measurements

    Frequency analysis in 1/1 and 1/3 octave filters with Modular A

    Environmental noise measurement and 24 hour monitoring with Modular B

    Reverberation time measurements with Modular A

    Airport Noise Monitoring and data collect with Modular C

    Key words:
    • Noise Analyzer
  • PERFORMANCE SPECIFICATIONS

    Standard: Complies with IEC 61672 class 1                                            

    Meas. Range : 25 dB ~ 130 dB(A) (re. 20 μPa)

    Freq. Range: 10 Hz ~ 20 kHz                                                         

    Freq. Weighting: A, C, F (flat)

    Time Weighting: F, S (Exp. average (RMS) , and Lin. Average                           

    Level Linearity Range: 70 dB

    Range: 10 ~ 80 dB, 20 ~ 90 dB, 30 ~ 100 dB, 40 ~ 110 dB , 50 ~ 120 dB , 60 ~ 130 dB

    INPUT

    Mic.: 1/2" Prepolarized Condenser Mic.                                               

    Sensitivity: approach 50 mV/Pa

    Freq. Range: 10 Hz ~ 20 kHz                                                       

    Freq. Response: Free field

    Polarized Voltage: 0 V                                                             

    Ref. direction: Axial direction of microphone

    Mic. Preamplifier

    OUTPUT

    Detector: Digital detector                                      

    Indicator: 128 x 64 graphic LCD with back-lit

    AC Output (full scale): 1.1V AC RMS                          

    Output Impedance: 600 _ Connector: 3.5 mm jack plug

    DC Output (full scale): 2.75 DC V, 0.25 V/dB                   

    Output Impedance: 1000 _ Connector: 3.5 mm jack plug

    http://www.set-ndt.ru/category_16.html

    Digital I/O: RS-232C Interface                                

    Connector: RJ45 plug

    POWER SUPPLY

    Batteries: 6 × LR6                                           

    Operating Voltage: 6.5 ~ 9 V DC

    Operating current: ≈80 mA                                  

    Battery Life: ≈20 hours (continuous use)

    External Power: 9 V DC 200 mA                              

    Connector: 1.1 mm coaxial plug

    ENVIRONMENT

    Temperature: -10°C ~ 50°C                                   

    Humidity: 25% ~ 90% (R.H)

    Atmospheric Pressure: 650 hPa ~ 1080 hPa

    PHYSICAL

    Dimensions: NL270: 290 (H) x 90 (W) x 38 (D) mm; Carrying case: 120 (H) x 500 (W) x 300 (D) mm

    Weight: NL270: ≈500 g (including batteries); Carrying case: 3.5 kg (including NL270 and all accessories)

    Mounting Screw: UNC 1/4" for direct connection to tripod                                                                               

     

    ACCESSORIES

    Included: 1/2" Prepolarized Condenser Mic. , windscreen Ø80 mm x 1, RJ45-RS232 data cable x 1,

    LR6 battery x 1, disc x 1, instrument manual x 1

    Available: Noise Analyser, Sound Level Calibrator

    5 m extension cable, 2 m mic. support rod, SLM tripod, carrying case

     

    A/B/C three modulars mentioned may be selected and combined by users as follow:                                 

    Model A - Spectrum Analysis and Reverberation Time Measurements

    Meas. Parameters: Lp, Tr (reverberation time)

    Measuring Range of Reverberation Time: 0.3 s ~ 10 s

    Time Weighting: F, S ( Exp. average )

    Store Capacity: 2000 groups of graphs/spectrums or reverberation time data

    Internal Filter: 1/1 and 1/3 Octave band pass filters conform to IEC 61260 class 2

    Center Frequency of 1/1 Octave Filter: 1/1 Octave:31.5 Hz, 63 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz,

    4 kHz, 8 kHz, 16 kHz

    Center Frequency of 1/3 Octave Filter: 20 Hz, 25 Hz, 31.5 Hz, 40 Hz, 50 Hz 63 Hz, 80 Hz, 100 Hz, 125 Hz,

    160 Hz, 200 Hz, 250 Hz, 315 Hz,

    400 Hz, 500 Hz, 630 Hz, 800 Hz, 1 kHz, 1.25 kHz, 1.6 kHz, 2.0 kHz, 2.5 kHz, 3.15 kHz, 4 kHz, 5 kHz, 6.3 kHz,

    8 kHz, 10 kHz, 20 kHz

    Display: Measured parameters and spectrum graphs and graph of change of instantaneous SPL

     

    Model B - Statistical Analysis

    Meas. Parameters: Lp, Leq, Lmax, Lmin, and L5, L10, L50, L90, L95,SD and Ld, Ln, Ldn

    Meas. Time: Manual, 10 s, 1 min, 5 min, 10 min, 15 min, 20 min, 30 min, 1 h, 4 h, 8 h, 24 h (once per hour)

    Time Weighting: F, S ( Exp. average ) and Linear average

    Sampling Period: 0.1 s, 0.2 s, 0.5 s, 1 s, 2 s, 5 s, 10 s

    24 Hours Automatic Monitoring: measuring once per hour

    Intelligent Delete: Burst event may be deleted scientifically

    Store Capacity: 2000 groups of data or 80 days of 24 h data

    Display: Measured parameters and statistical and accumulated distribution graphs, 24 h distribution graphs

    and graph of change of instantaneous SPL

     

    Model C - Integrating and Airport Noise Measurements

    Meas. Parameters: Lp, Leq, Lmax, Lmin, LAE, E, LEPN

    Meas. Time: Manual, 10 s, 1 min, 5 min, 10 min, 15 min, 20 min, 30 min, 1 h, 4 h, 8 h, 24 h

    Time Weighting: F, S ( Exp. average ) and Linear average

    Sampling period: 0.1 s, 0.2 s, 0.5 s, 1 s, 2 s, 5 s, 10 s

    Sampling Parameters: Lp, Leq. 1s

    Store Capacity: 2000 groups of data or 480,000 time stamped results

    Display: Measured parameters and graph of change of instantaneous SPL and calculated airport LEPN.

     

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