PCB-378A14
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PCB-378A14

  • 1/4 "-ICP® precision microphone for pressure applications,
  • Combination of microphone capsule PCB 377A14 and preamp PCB-426A05,
  • Sensitivity 1.0 mV / PA,
  • Dynamic range > 174 dB,
  • Frequency range 4 … 70,000 Hz,
  • 10-32 socket
  • As system calibrated
  • basic data
    Nominal microphone diameter 1/4 "    
     
    application merge field    
     
    Sensitivity in the open circuit 1,0 mV / PA   [2]
     
    sensitivity in the open circuit (±3 dB) -60 dB in relation to 1 V / PA   [2 ]
     
    (±2 dB) frequency range 4.0 … 70,000 Hz    
     
    lower limiting frequency (-3 dB) 0,75 … 4.0 Hz    
     
    Noise < 60 dB in relation to 20 µPa    
     
    noise < 53 dB(A) in relation to 20 µPa    
     
    dynamic range (for total harmonic distortion ? 3%) > 174 dB in relation to 20 µPa    
     
    Dynamic range (maximum without clipping) > 177 dB in relation to 20 µPa   [1]
     
    TEDS Chip integrates by default   [3]
    conditions
    temperature range (operation) -40 … 158 °F -40 … 70 °C  
     
    Temperature coefficient of sensitivity (-10 … 70 ° C) 0.003 dB / ° F 0.006 dB / ° C [4] [2]
     
    influence of static pressure -0.003 dB/kPa   [4]
     
    influence by humidity (0 … 100%, non-condensing) -0.0014 … 0,0014 dB/% RH -0.0014 … 0.0014 dB/% RH [2]
     
    Influence by axial vibration (0.1 g, 1 m/s²) 66 dB in relation to 20 µPa   [4]
    Technical properties
    Polarization voltage 0 V   [5]
     
    Supply 20 … 32 V DC    
     
    constant power supply 2 … 20 mA    
     
    Bias voltage 10 … 14 V DC    
     
    output impedance < 50Ω    
     
    Maximum output range ±8 V pk    
    physical properties
    housing material stainless steel alloy    
     
    Pressure equalization side    
     
    Electrical connection 10-32 socket    
     
    mounting thread (preamplifier) 0.25-60 UNS    
     
    size ße - diameter (with cap) 0.28 in 7.1 mm  
     
    size - diameter (without protection cap) 0.25 in 6.35 mm  
     
    size ße - height (with cap) 2.07 in 52.6 mm  
     
    size - height (without protection cap) 2.02 in 51.3 mm  
     
    mass 0.27 oz 7.8 grams [4]
    Notes
    [1] peak    
     
    [2] based on 250 Hz    
     
    [3] TEDS memory in accordance with IEEE PP1451. 4    
     
    [4] typically    
     
    [5] Prepolarized    
     
    [6] details: see PCB Declaration of conformance PS076    
    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-378A14

    Specific References

    Download

    378A14_drawing.PDF

    Technical drawing

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    378A14_manual.PDF

    Operating instructions

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    378A14_specs.PDF

    Technical data sheet

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