PCB-378A12

PCB-378A12

  • 1/4 "-ICP® precision microphone for pressure applications,
  • Combination of microphone capsule PCB 377A12 and preamp PCB-426 B 03,
  • Sensitivity 0.25 mV / PA,
  • Dynamic range > 177 dB,
  • Frequency range 5 … 20,000 Hz,
  • 10-32 socket
  • As system calibrated
  • basic data
    Nominal diameter of microphone1/4 "
    applicationpressure field
    Sensitivity in the open circuit0.25 mV / PA[2]
    sensitivity in the open circuit (±3 dB)-72 dB in relation to 1 V / PA[2]
    Frequency range (±2 dB)5.0 … 20,000 Hz
    Lower limiting frequency (-3 dB)0,75 … 4.0 Hz
    noise (linear)< 72 dB in relation to 20 µPa
    Noise< 65 dB(A) in relation to 20 µPa
    dynamic range (for THD ≤ 3%)> 177 dB in relation to 20 µPa
    Dynamic range (maximum without clipping)> 180 dB in relation to 20 µPa[1]
    TEDS Chipintegrated by default[3]
    conditions
    temperature range (operation)-40 … 158 °F-40 … 70 °C
    Temperature coefficient of sensitivity (-10 … 70 ° C)0.004 dB / ° F0,007 dB / ° C[2] [4]
    Influence by humidity (0 … 100%, non-condensing)-0.001 … 0.001 dB/% RH-0.001 … 0.001 dB/% RH[2]
    influence by axial vibration (0.1 g, 1 m/s 2)72 dB in relation to 20 µPa[4]
    technical characteristics
    polarization voltage0 V[5]
    power supply20 … 32 V DC
    constant power supply2 … 20 mA
    Bias voltage10 … 14 V DC
    output impedance< 50 Ω
    Maximum output range±8 V pk
    physical properties
    housing materialstainless steel alloy
    Pressure reliefback[6]
    electrical connection10-32 socketACS-42Calibration of a microphone with pre-amplifier-1
    (TLD) TEDS memory in accordance with IEEE P1451. 4
    Accessories
    ACS-63calibration of a microphone with Vorverstä stronger-1

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