PCB-378A12
zoom_out_map

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 microphone 1/4 "
    application pressure field
    Sensitivity in the open circuit 0.25 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 Chip integrated by default [3]
    conditions
    temperature range (operation) -40 … 158 °F -40 … 70 °C
    Temperature coefficient of sensitivity (-10 … 70 ° C) 0.004 dB / ° F 0,007 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 voltage 0 V [5]
    power supply 20 … 32 V DC
    constant power supply 2 … 20 mA
    Bias voltage 10 … 14 V DC
    output impedance < 50 Ω
    Maximum output range ±8 V pk
    physical properties
    housing material stainless steel alloy
    Pressure relief back [6]
    electrical connection 10-32 socket ACS-42 Calibration of a microphone with pre-amplifier -1
    (TLD) TEDS memory in accordance with IEEE P1451. 4
    Accessories
    ACS-63 calibration of a microphone with Vorverstä stronger -1
    PCB-378A12

    Specific References

    Download

    378A12_drawing_1.PDF

    Technical drawing 1

    Download (80.98k)

    378A12_drawing_2.PDF

    Technical drawing 2

    Download (374.48k)

    378A12_drawing_3.PDF

    Technical drawing 3

    Download (88.86k)

    378A12_manual.PDF

    Operating instructions

    Download (1.39M)