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 microphone 1/2 "
    application diffuse-field
    Sensitivity 50 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 range 3.75 … 16,000 Hz
    lower limiting frequency 1.0 … 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 Chip integrated by default [1]
    conditions of use
    Temperature range (operation) -40 … 176 ° F -40 … 80 ° C
    Temperature coefficient of sensitivity 0,005 dB/°F 0.009 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 vibration 63 dB in relation to 20 µPa [3]
    technical characteristics
    polarization voltage 0 V [4]
    Supply 20 … 30 V DC
    constant power supply 2 … 20 mA
    Bias voltage 10 … 14 V DC
    maximum output range V ±7 PK
    Output impedance < 50 Ω
    physical properties
    housing material stainless steel alloy
    Pressure back [5]
    electrical connection BNC Jack
    mounting thread (cap) 0,5 - 60 UNS
    size - diameter (with cap) 0.52 in 13.2 mm
    size - diameter 0.50 in 12.7 mm
    Size - height (with cap) 3.62 in 91.9 mm
    size - height (without protection cap) 3.58 in 90.9 mm
    Mass 1.63 oz 45.8 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-42 calibration of a microphone with pre-amplifier -1
    (TLD) TEDS memory in accordance with IEEE P1451. 4
    Accessories
    ACS-63 calibration 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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