PCB-EX378B02
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PCB-EX378B02

  • 1/2 "ICP® Precision Microphone for Free Field Applications
  • Sensitivity 50 mV / Pa
  • Dynamic range> 137 dB
  • Frequency range 3.75 ... 20,000 Hz
  • BNC connector
  • Calibrated as a system
  • With ATEX / IECEx approval
specifications
basic dataEnglish unitsSI units 
Nominal microphone diameter 1/2"
application Freifeld
Sensitivity in the open circuit 50 mV / Pa [2]
Sensitivity in open circuit (± 1.5 dB) -26 dB relative to 1 V / Pa [2]
Frequency range (± 1 dB) 7 … 10.000 Hz
Frequency range (± 2 dB) 3,75 … 20.000 Hz
Lower cutoff frequency (3dB) 1.0 to 3.0 Hz
inherent noise <15.5 dB (A) based on 20 μPa [1]
Dynamic range (for harmonic distortion ≤3%) > 137 dB based on 20 μPa [1]
Operating conditions
Temperature range (operation) -40 … 176 °F -40 … 80 °C
Temperature coefficient of sensitivity (+14 to + 158®F (-10 to + 70 ° C)) 0.005 dB/°F 0.009 dB/°C [1][2]
Influence by static pressure -0,013 dB/kPa [1][2]
Influence by humidity (0 ... 100%, non-condensing) -0,01 … 0,01 dB/% RH [2]
Influence by axial vibration (0.1 g, 1 m / s²) 63 dB based on 20 μPa [1]
Technical characteristics
Polarisationsspannung 0 v [3]
supply voltage 20 … 30 VDC
Constant current supply 2 ... 20 mA
Bias voltage 10 … 14 VDC
output impedance <50 Ω
Maximum output range ±7 Vpk
Physical properties
housing material Stainless alloy
pressure equalization behind [4]
Electrical connection BNC-Stecker
Mounting thread (protective cap) 0.5 - 60 US
Size - diameter (with protective cap) 0,52 in 13,2 mm
Size - diameter (without cap) 0,50 in 12,7 mm
Size - height (with protective cap) 4,02 in 102,1 mm
Size - height (without cap) 3,99 in 101,2 mm
Mass 1,87 oz 53 grams [1]

Hints
[1] typically,
[2] Based on 250 Hz
[3] prepolarised
[4] Bleed through preamplifier.

included supply
ACS-63 Calibrate precision condenser microphones and preamplifiers together (1)
PCB-EX378B02

Specific References

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EX378B02_Drawing.pdf

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EX378B02_Manual.pdf

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EX378B02_Specs.pdf

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