PCB-377C20
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      PCB-377C20

      • Prepolarized 1/2"-Präzisionsmikrofonkapsel
        für Diffusfeldanwendungen,
      • Empfindlichkeit 50 mV/Pa,
      • Dynamikbereich >144 dB,
      • Frequenzbereich 3,15 … 16.000 Hz
      basic data
      Nominal diameter of microphone1/2 "
      applicationdiffuse-field
      Sensitivity in the open circuit50 mV / PA[3]
      sensitivity in the open circuit (±1. 5 dB)-26 dB in relation to 1 V / PA[3]
      Frequency range (± 1 dB)5 … 6,300 Hz
      (±2 dB) frequency range3.15 … 16,000 Hz
      lower limiting frequency (-3 dB)1.0 … 2.4 Hz
      Resonance frequency12,000 Hz[1]
      noise< 15 dB(A) in relation to 20 µPa
      dynamic range> 144 dB in relation to 20 µPa
      microphone type in accordance with IEC 61094-4WS2D[2]
      conditions
      Temperature range (operation)-40 … 248 ° F-40 … 120 ° C
      Temperature coefficient of sensitivity0,005 dB/°F0.009 dB / ° C[3] [1]
      Influenceby static pressure-0.01 dB/kPa[3] [1]
      Humidity coefficient of sensitivity±0, 001 dB/% RH[3]
      influence by axial vibration63 dB in relation to 20 µPa[1]
      technical characteristics
      capacity11 pF[1]
      Polarization voltage0 V[4]
      physical properties
      housing materialstainless steel alloy
      pressure equalizationRear
      Mounting thread (amp)0,4606 60 UNS11,7 mm - 60 UNS
      mounting thread (cap)0,5 - 60 UNS12,7 mm - 60 UNS
      Size - diameter (with cap)0.52 in13.2 mm
      size - diameter (without protection cap)0.5 in12.7 mm
      Size - height (with cap)0.64 in16.2 mm
      size - height (without protection cap)0.6 in15.3 mm
      Mass0.28 oz7.8 grams[1]
      notes
      [1]typically
      [2]the tolerances of the Model 377C-20 are between 50 and 70% of the permissible deviations in accordance with this standard.
      [3]based on 250 Hz
      [4]Prepolarized
      Accessories
      ACS-20Calibration of a precision capacitor microphone-1
      PCB-377C20

      Specific References

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      377C20_drawing.PDF

      Technical drawing

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      377C20_manual.PDF

      Operating instructions

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      377C20_specs.PDF

      Technical data sheet

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