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 diameter1/4 "  
       
      applicationmerge field  
       
      Sensitivity in the open circuit1,0 mV / PA [2]
       
      sensitivity in the open circuit (±3 dB)-60 dB in relation to 1 V / PA [2 ]
       
      (±2 dB) frequency range4.0 … 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 Chipintegrates by default [3]
      conditions
      temperature range (operation)-40 … 158 °F-40 … 70 °C 
       
      Temperature coefficient of sensitivity (-10 … 70 ° C)0.003 dB / ° F0.006 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 voltage0 V [5]
       
      Supply20 … 32 V DC  
       
      constant power supply2 … 20 mA  
       
      Bias voltage10 … 14 V DC  
       
      output impedance< 50Ω  
       
      Maximum output range±8 V pk  
      physical properties
      housing materialstainless steel alloy  
       
      Pressure equalizationside  
       
      Electrical connection10-32 socket  
       
      mounting thread (preamplifier)0.25-60 UNS  
       
      size ße - diameter (with cap)0.28 in7.1 mm 
       
      size - diameter (without protection cap)0.25 in6.35 mm 
       
      size ße - height (with cap)2.07 in52.6 mm 
       
      size - height (without protection cap)2.02 in51.3 mm 
       
      mass0.27 oz7.8 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-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 
      PCB-378A14

      Specific References

      Download

      378A14_drawing.PDF

      Technical drawing

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      378A14_manual.PDF

      Operating instructions

      Download (1.79M)

      378A14_specs.PDF

      Technical data sheet

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