PCB-HT378B02

PCB-HT378B02

  • 1/2 "-ICP® precision microphone for free-field applications,
  • Combination of microphone capsule 377B02 and pre-amplifier HT426E01,
  • Operating temperature up to 120 ° C,
  • Sensitivity 50 mV / PA,
  • Dynamic range > 137 dB,
  • Frequency range 3.5 … 20,000 Hz,
  • BNC connector,
  • As system calibrated

basic data
Nominal diameter of microphone1/2 "
applicationfree-field
Sensitivity in the open circuit50 mV / PA[3]
-26 dB in relation to 1 V / PAopen circuit sensitivity (±1. 5 dB relative to 1 V / PA)[3]
Frequency range (± 1 dB)6 … 10,000 Hz
(±2 dB) frequency range3.5 … 20,000 Hz
Lower limiting frequency (3)1.0 … 2.75 Hz
noise (linear)< 32 dB in relation to 20 µPa
noise< 17 dB(A) in relation to 20 µPa
dynamic range (for THD ≤ 3%)> 137 dB in relation to 20 µPa
dynamic range ( maximum without clipping)140 dB in relation to 20 µPa[1] [2]
TEDS Chipintegrated by default[4]
conditions of use
Temperature range(Operation)-40 … 248 ° F-40 … 120 ° C
Temperature coefficient of sensitivity (-10 … 70 ° C)0,004 dB/°F0.009 dB / ° C[1] [3]
influence of static pressure-0.013 dB/kPa[1]
influence by humidity (0 … 100%, non-condensing)-0.01 … 0.01 dB/% RH[3]
influence by axial Vibration (0.1 g, 1 m/s²)66 dB in relation to 20 µPa[1]
technical characteristics
polarization voltage0 V[5]
Supply voltage20 … 32 V DC
constant power supply2 … 10 mA
Bias voltage10 … 14 V DC
Output impedance< 55 Ω
maximum output range±7 V pk
Physical properties
Housing materialstainless alloy
pressureback[6]
electrical connectionBNC-Plug
Mounting thread (cap)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[1]
notes
[1]typically
[2]peak
[3]based on 250 Hz
[4]TEDS memory in accordance with IEEE PP1451. 4
[5]Prepolarized
[6]pressure compensation by the pre
[7]details: see PCBs Declaration of conformance PS065
Accessories
ACS-42Calibration of a microphone with pre-amplifier-1
(TLD) TEDS memory in accordance with IEEE P1451. 4
Accessories
ACS-63calibration of a microphone with pre-amplifier-1

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