Sound Level Meter

Pengukur tingkat suara YDS135 adalah pengukur tingkat suara multi-fungsi digital, yang dirancang untuk mengukur frekuensi tertimbang dan tingkat tekanan suara tertimbang waktu, tingkat suara berkelanjutan yang setara, tingkat suara paparan, tingkat suara statistik, dll. Evaluasi akustik, ia memiliki 4 kerja mode rata-rata integrasi, paralel integrasi, analisis statistik, dan pengukuran 24 jam untuk dipilih pengguna. Instrumen ini juga menyediakan pembobotan frekuensi rendah opsional untuk pengukuran kebisingan radiasi sekunder.

Sound Level Meter

YDS135 telah memiliki berbagai sertifikat pertambangan; sertifikat tanda keselamatan untuk produk tambang batubara; sertifikat tanda keselamatan untuk produk tambang logam dan non logam serta teknis utama lainnya.

Executive Standard

  1. GB 3836.1-2010 "Explosive Atmospheres Part 1: General Requirements for Equipment";
  2. GB 3836.4-2010 "Explosive Atmospheres Part 4: Equipment Protected by Intrinsic Safety Type "i"";
  3. GB 3096-2008 "Acoustic Environment Quality Standard";
  4. GB/T 32412010 and IEC 61260:2014 "Electroacoustic Octave and Fractional Octave Filters";
  5. GB/T 37852010 and IEC 61672:2013 "Electroacoustic Sound Level Meter";
  6. GB 12348 2008 "Environmental Noise Emission Standards at the Boundary of Industrial Enterprises";
  7. GB/T 159522010/IEC 61252:2002 "Specifications for Electroacoustic Personal Sound Exposure Meters";
  8. GB 223372008 "Emission Standards for Social Living Environment Noise";
  9. HJ 640 2012 "Environmental Noise Monitoring Technical Specifications for Routine Monitoring of Urban Acoustic Environment"; HJ 661-2013
  1. Performance level: GB/T3785 and IEC61672 level 1
  2. Available MEasurement: L XY (X=A, C or Z, Y=F, S or I), L XY max , L XY min , L Cpeak , 1s L eq , L eq , L E , E , D , L eq, 8hn , L N ( N =1~99, choose 5), s ,L h , L d , L e , L n , L dn , L den , L A f , L C f , L Z f
  3. Storage Device : SD card, 8 G (up to 32 G is optional)
  4. USB B socket
  5. Micro thermal printer or Dot matrix printer

Spesification :

  1. Measurement microphone : HY207 prepolarized test condenser microphone (grade 1), free-field type Frequency response, nominal diameter 12.7 mm, nominal sensitivity 50 mV/Pa (nominal sensitivity level is -30dB, reference value 1 V/Pa)
  2. Frequency range : 10 Hz-20 kHz (level 1)
  3. Frequency weighting : A weighting, C weighting, Z weighting
  4. Time weighting : F (fast), S (slow), I (impulse)
  5. Low frequency A weighting : low-pass filter, cut-off frequency 224.5 Hz (for secondary radiation noise measurement)
  6. Sound level measurement range: A weighting: 28 dB~135 dB, C weighting: 40 dB~135 dB, Z weighting: 45 dB~135 dB
  7. Sound exposure measurement range : 0.001 Pa 2 s~999 Pa 2 s, 0.278 Pa 2 h~9 999 Pa 2 h, automatic unit conversion
  8. Noise dose measurement range : 0.001%~9 999%, exchange rate 3 dB, standard judgment sound level is 85 dB
  9. Integration time : manual setting, measurement duration is 1 s~99 h 59 min 59 s
  10. Display : 128x128 dot-matrix liquid crystal display (LCD), resolution 0.1 dB; quasi-analog indicator, resolution 1 dB; can display 1/3 octave and 1 /1 octave spectrogram. At the same time, it has signs of overload, under range, low battery voltage, etc.
  11. Filter : 1/1 octave center frequency (Hz): 16, 31.5, 63, 125, 250, 500, 1000, 2000, 4000, 8000, 16000
  12. 1/3 octave center frequency (Hz): 16, 20, 25, 31.5, 40, 50, 63, 80, 100, 125, 160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500, 3150, 4000, 5000, 6300, 8000, 10000, 12500, 16000, 20000
  13. Analog output : 3.5 mm two-channel headphone jack, minimum load impedance 10 kΩ
    1. DC logarithmic output: unit voltage output rate 15 mV/dB, 450 mV ~ 1950 mV in the total measurement range, (that is, corresponding to the measurement range When the upper limit is 130 dB, it is 1950 mV, and when the lower limit is 30 dB, it is 450 mV)
    2. AC linear output: the output voltage has a linear relationship with the measured sound pressure, corresponding to the upper limit of the measurement range, and the root mean square value of the output voltage is 2.0 V
  14. Digital Output : USB B socket, DB9 male (needle type), RS232 serial communication port, output ASCII code, external RD-V32-SN portable micro thermal printer or RG-MDP58C dot matrix printer
  15. Storage Device : SD card, 8 G (up to 32 G is optional)
  16. Power supply : 2 AA Huatai batteries or Nanfu batteries
  17. Dimensions : L x W x T 210mm x 68mm x 31mm
  18. Weight : 210 g (incl battery)
  19. Operating temperature range : Class 1 sound level meter: -10°C~ 50°C