PCB-378C20

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

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