PCB-378C20
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      PCB-378C20

    • 1/2 "-ICP® precision microphone for diffuse field applications,
    • Combination of microphone capsule PCB-377 C 20 and preamp PCB-426E01,
    • Sensitivity 50 mV / PA,
    • Dynamic range > 135 dB,
    • Frequency range 3.75 … 16,000 Hz,
    • BNC connector,
    • As system calibrated
    • basic data
      Nominal diameter of microphone1/2 "
      applicationdiffuse-field
      Sensitivity50 mV / PA[2]
      sensitivity (±1. 5 dB)-26 dB in relation to 1 V / PA[2]
      frequency range (± 1 dB)7 … 6,300 Hz
      (±2 dB) frequency range3.75 … 16,000 Hz
      lower limiting frequency1.0 … 3.0 Hz
      Noise< 20 dB in relation to 20 µPa
      noise< 16.5 dB(A) in relation to 20 µPa
      Dynamic range> 135 dB in relation to 20 µPa
      TEDS Chipintegrated by default[1]
      conditions of use
      Temperature range (operation)-40 … 176 ° F-40 … 80 ° C
      Temperature coefficient of sensitivity0,005 dB/°F0.009 dB / ° C[2] [3]
      Influence of static pressure-0.01 dB/kPa[2] [3]
      Humidity coefficient of sensitivity±0, 001 dB/% RH[2]
      Influence by axial vibration63 dB in relation to 20 µPa[3]
      technical characteristics
      polarization voltage0 V[4]
      Supply20 … 30 V DC
      constant power supply2 … 20 mA
      Bias voltage10 … 14 V DC
      maximum output rangeV ±7 PK
      Output impedance< 50 Ω
      physical properties
      housing materialstainless steel alloy
      Pressureback[5]
      electrical connectionBNC Jack
      mounting thread (cap)0,5 - 60 UNS
      size - diameter (with cap)0.52 in13.2 mm
      size - diameter0.50 in12.7 mm
      Size - height (with cap)3.62 in91.9 mm
      size - height (without protection cap)3.58 in90.9 mm
      Mass1.63 oz45.8 grams[3]
      indications
      [1]TEDS memory in accordance with IEEE PP1451. 4
      [2]based on 250 Hz
      [3]typically
      [4]Prepolarized
      [5]pressurised by the preamplifier
      [6]details: see PCBs Declaration of conformance PS064
      included Accessories
      ACS-42calibration of a microphone with pre-amplifier-1
      (TLD) TEDS memory in accordance with IEEE P1451. 4
      Accessories
      ACS-63calibration microphone with pre-amplifier-1
      PCB-378C20

      Specific References

      Download

      378C20_drawing.PDF

      Technical drawing

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      378C20_manual.PDF

      Operating instructions

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      378C20_specs.PDF

      Technical data sheet

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