PCB-HT378C20

PCB-HT378C20

  • 1/2 "-ICP® precision microphone for diffuse field applications,
  • Combination of microphone capsule 377 B 20 and pre HT426E01,
  • Operating temperature up to 120 ° C,
  • Sensitivity 50 mV / PA,
  • Dynamic range > 137 dB,
  • Frequency range 3.5 … 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)6 … 6,300 Hz  
     
    (±2 dB) frequency range3.5 … 16,000 Hz  
     
    lower limiting frequency (-3 dB)1.0 … 2.75 Hz  
     
    Noise< 32 dB in relation to 20 µPa  
     
    noise< 17 dB(A) in relation to 20 µPa  
     
    Dynamic range> 137 dB in relation to 20 µPa  
     
    TEDS Chipintegrated by default [1]
    conditions of use
    Temperature range (operation)-40 … 257 ° F-40 … 125 ° C[3]
     
    Temperature coefficient of sensitivity0,005 dB/°F0.009 dB / ° C[2] [4]
     
    Influence of static pressure-0.01 dB/kPa [2] [4]
     
    Humidity coefficient of sensitivity±0, 001 dB/% RH [2]
     
    Influence by axial vibration63 dB in relation to 20 µPa [4]
    technical characteristics
    polarization voltage0 V [5]
     
    Supply20 … 32 V DC  
     
    constant power supply2 … 10 mA  
     
    Bias voltage10 … 14 V DC  
     
    maximum output rangeV ±7 PK  
     
    Output impedance< 55 ?  
    physical properties
    housing materialstainless steel alloy  
     
    Pressureback [6]
     
    electrical connectionBNC Jack  
     
    mounting thread(Amp)0,5 - 60 UNS  
     
    Size - diameter (with cap)0.52 in13.2 mm 
     
    size - diameter (without protection cap)0.50 in12.7 mm 
     
    size - height (with cap)3.88 in98.6 mm 
     
    size - height (without protection cap)3.84 in97.5 mm 
     
    mass1.74 oz49.2 grams[4]
    hints
    [1]TEDS memory in accordance with IEEE PP1451. 4  
     
    [2]based on 250 Hz  
     
    [3]maximum 120 ° C at constant current > 4 mA  
     
    [4]typically  
     
    [5]Prepolarized  
     
    [6]pressure compensation by the pre  
     
    [7]Details: see PCBs Declaration of conformance PS064  
    Equipment
    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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