PCB-HT378C20
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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 microphone 1/2 "    
     
    application diffuse-field    
     
    Sensitivity 50 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 range 3.5 … 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 Chip integrated by default   [1]
    conditions of use
    Temperature range (operation) -40 … 257 ° F -40 … 125 ° C [3]
     
    Temperature coefficient of sensitivity 0,005 dB/°F 0.009 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 vibration 63 dB in relation to 20 µPa   [4]
    technical characteristics
    polarization voltage 0 V   [5]
     
    Supply 20 … 32 V DC    
     
    constant power supply 2 … 10 mA    
     
    Bias voltage 10 … 14 V DC    
     
    maximum output range V ±7 PK    
     
    Output impedance < 55 ?    
    physical properties
    housing material stainless steel alloy    
     
    Pressure back   [6]
     
    electrical connection BNC Jack    
     
    mounting thread(Amp) 0,5 - 60 UNS    
     
    Size - diameter (with cap) 0.52 in 13.2 mm  
     
    size - diameter (without protection cap) 0.50 in 12.7 mm  
     
    size - height (with cap) 3.88 in 98.6 mm  
     
    size - height (without protection cap) 3.84 in 97.5 mm  
     
    mass 1.74 oz 49.2 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-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-HT378C20

    Specific References

    Download

    HT378C20_drawing.PDF

    Technical drawing

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    HT378C20_manual.PDF

    Operating instructions

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    HT378C20_specs.PDF

    Technical data sheet

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